JP4086804B2 - Digital broadcast receiving apparatus and data broadcast update notification method - Google Patents

Description

  The present invention relates to an apparatus and method for receiving a digital data broadcast.

  Recently, data broadcasting services based on terrestrial digital broadcasting have attracted attention. The data broadcasting service sends TV video and audio over the ground and also sends data broadcasting programs such as images and text. For each broadcasting station, news, traffic information, weather information, stock price information, etc. A data broadcast program consisting of these programs is broadcast. A dedicated digital tuner is used to receive data broadcasts. Usually, the items of each program are displayed on the data broadcasting screen, and the user uses a remote control (hereinafter simply referred to as a remote control) or the like to select an arbitrary item from the displayed items. By selecting and inputting, a desired program can be displayed. In addition, the user can arbitrarily select display or non-display of the data broadcast program by an operation with the remote controller.

In order to make data broadcasting services easier for users, receiving apparatuses having various functions have been proposed. For example, in Patent Document 1, when the display content of a data broadcast program is updated for a program-linked data broadcast program in which the display content of the data broadcast program is updated in a manner linked to the television program, the pre-update data is displayed. There has been proposed a data broadcast receiving apparatus capable of redisplaying the contents. In data broadcasting, a transmission method called a data carousel that normally transmits data of the same content at a fixed period is adopted. When receiving data of a data broadcasting program, the receiving side receives the previously received data this time. Processing such as rewriting with data is performed. For this reason, the user cannot redisplay the contents of the data broadcast program that has been missed. In the one described in Patent Document 1, when the content of the received display name description file is updated, the data before the update is saved in another location. The contents can be displayed again.
JP-A-11-261979

  Independent data broadcasting programs such as weather information and stock price information do not always have to be displayed unlike the program-linked type, and are usually displayed by the user as needed. In the case of an independent data broadcasting program, the display content is periodically updated. However, until now, the user has not been able to know when the update is performed. For this reason, for example, in order to obtain the latest stock price information, the user must always display a stock price program or perform display switching to a stock price program many times. However, when the stock price program is always displayed, it is impossible to browse other data broadcasting programs. In addition, when a television broadcast program is displayed together with a data broadcast program, the display area of the television broadcast program is limited by the display of the data broadcast program, which is very difficult to see. On the other hand, it is very troublesome for the user to perform display switching many times. Thus, conventionally, when viewing the latest information in an independent data broadcasting program such as weather information and stock price information, it has never been easy to use for the user.

  In the one described in Patent Document 1, it is possible to determine whether to update a program-linked data broadcast program. However, this data update determination is merely an update of the title name and the like, and an update of display contents (actual data) of the data broadcast program such as weather information and stock price information cannot be determined. . Therefore, even in the one described in Patent Document 1, since the user cannot know the update of the program contents, in order to obtain the latest program information, the program is always displayed, or the program of stock price information It was necessary to switch the display to the number of times.

  An object of the present invention is to provide a digital broadcast receiving apparatus and a data broadcast update notification method capable of solving the above-described problems and easily browsing the latest information of a desired data broadcast program.

First digital broadcast receiving apparatus of the present invention is provided as information designated and the document information capable of specifying a data broadcast program, the layout and the item indicating the arrangement of the items constituting the broadcast screen of the data broadcast program a tuner for receiving a data broadcast consisting contents including the document structure comprising the actual data that a storage unit in which the document information and document structure related to the data broadcasting program is an update notification target is stored in association, with the tuner The update notification target document confirmation unit for confirming whether or not there is content including the document information stored in the storage unit in the currently received data broadcast, and the storage unit in the update notification target document confirmation unit If it is determined that there is content including document information stored in the document, the document configuration of the content and the storage unit Compared with the corresponding document structure stored, and when the layout is the same and the actual data is different, it is determined that the data has been updated, and the compared document structure stored in the storage unit is the compared content A document update determination unit that updates the document based on the document configuration, and an update notification unit that outputs a message to that effect to an external display device when it is determined that the data update has been performed by the document update determination unit. It is characterized by.

  According to said structure, the document information and document structure of a desired data broadcast program are stored in a memory | storage part. Then, it is confirmed whether or not there is content including document information stored in the storage unit in the data broadcast currently received by the tuner, and if it is determined that there is content, the document of the content The configuration and the corresponding document configuration stored in the storage unit are compared. In this comparison, if it is determined that the layout is the same and the actual data is different, it is determined that the data has been updated, and a message to that effect is displayed on the external display device. In this way, the update of the desired data broadcast program is automatically notified to the user as a message. Therefore, the user does not need to display a desired data broadcast program in order to obtain the latest information. Further, since it is not necessary to display a desired data broadcast program, there is no problem that the display area is limited when a television broadcast program is displayed. In addition, other broadcast programs included in the currently received data broadcast can be displayed.

Second digital broadcast receiving apparatus of the present invention is provided as information designated and the document information capable of specifying a data broadcast program, the layout and the item indicating the arrangement of the items constituting the broadcast screen of the data broadcast program that a plurality of tuners for receiving data broadcasting consisting of content that includes a document composition containing real data, for a plurality of receiving channels, wherein the document information and document structure related to the data broadcasting program is an update notification target is a respective receiving channel A storage unit stored in association with identifiable channel information, and a setting of a reception channel in a predetermined tuner among the plurality of tuners in a range of reception channels corresponding to each channel information stored in the storage unit is periodically performed A channel automatic setting unit for switching to the predetermined tuner The update notification target document confirmation unit for confirming whether or not there is content including the document information stored in the storage unit in the currently received data broadcast, and the storage unit in the update notification target document confirmation unit If it is determined that there is content including the document information stored in the document, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit, and the layout is the same and the actual data is different. A document update determination unit that determines that the data update has been performed and updates the corresponding document configuration stored in the storage unit based on the document configuration of the compared content, and the document update determination unit And an update notification unit that outputs a message to that effect to an external display device when it is determined that the update has been made.

  According to said structure, the setting of the receiving channel in a predetermined tuner is periodically switched in the range of each receiving channel of the data broadcasting program stored in the memory | storage part as update notification object. Then, it is confirmed whether or not there is a content including document information stored in the storage unit in the data broadcast currently received by the predetermined tuner. Are compared with the corresponding document configuration stored in the storage unit. In this comparison, if it is determined that the layout is the same and the actual data is different, it is determined that the data has been updated, and a message to that effect is displayed on the external display device. This message is displayed every time the reception channel is switched. In this way, the data update is automatically notified to the user as a message for all data broadcast programs stored in the storage unit as update notification targets. Also in this case, the same operation as the first digital broadcast receiving apparatus described above is achieved.

  In the case of the first digital broadcast receiving apparatus, since there is one tuner, it is impossible to determine whether or not a data broadcast program with a different reception channel has been updated. For example, when a news program broadcast on the first reception channel is received by the tuner, it is impossible to determine whether the stock price program broadcast on the second reception channel has been updated. On the other hand, in the case of the second digital broadcast receiving apparatus, a plurality of tuners are used. For example, when two tuners are used, one tuner is used for update notification, and by periodically switching the reception channel, data broadcast programs of all reception channels set as update notification targets are displayed. Updates are automatically notified. Thus, automatic update notification is possible for data broadcast programs with different reception channels.

First data broadcasting update notification method of the present invention, provided as information designated and the document information capable of specifying a data broadcast program, the layout and the item indicating the arrangement of the items constituting the broadcast screen of the data broadcast program a data broadcast update notification method performed in a receiving apparatus having a tuner for receiving a data broadcast consisting contents including the document structure containing real data, the document information and documentation for a data broadcast program is an update notification target A first step of associating a configuration and storing in the storage unit of the receiving device, and whether or not there is content including document information stored in the storage unit in the data broadcast currently received by the tuner When it is determined that there is content in the second step to be confirmed and the second step, A third step of comparing the document structure of the content and the corresponding document structure stored in the storage unit and determining that the data has been updated when the layout is the same and the actual data is different; and When it is determined that the data has been updated in the step, a message to that effect is displayed on the external display device, and the corresponding document configuration stored in the storage unit is updated based on the document configuration of the compared content And a fourth step. This first data broadcast update notification method also has the same effect as the first digital broadcast receiver described above.

Second data broadcast update notification method of the present invention, provided as information designated and the document information capable of specifying a data broadcast program, the layout and the item indicating the arrangement of the items constituting the broadcast screen of the data broadcast program actual receive data broadcast consisting contents including the document structure comprising the data to a data broadcast update notification method performed in a receiving apparatus having a plurality of tuners, the data broadcast programs for a plurality of receiving channels, the document being A first step of storing information and document structure in the storage unit of the reception apparatus in association with channel information capable of specifying each reception channel; and a range of reception channels corresponding to each channel information stored in the storage unit The receiving channel in a predetermined tuner among the plurality of tuners. A second step of periodically switching the setting of a message, and a step of confirming whether or not the data broadcast currently received by the predetermined tuner includes content including document information stored in the storage unit 3 and the third step, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit, and the layout is the same and the actual content is compared. A fourth step for determining that data update has been performed when the data is different; and, when it is determined that data update has been performed in the fourth step, a message to that effect is displayed on an external display device, and And a fifth step of updating a corresponding document structure stored in the storage unit based on the document structure of the compared contents. This second data broadcast update notification method also has the same effect as the second digital broadcast receiver described above.

  As described above, according to the present invention, since the data update is automatically notified, the latest information can be easily browsed, and a receiving apparatus that is more convenient than the conventional one can be provided. .

  Next, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram showing a schematic configuration of a digital broadcast receiving apparatus according to the first embodiment of the present invention. The main part of this digital broadcast receiving apparatus is a receiver main body 1 connected to an output unit 3 in which a display device such as a CRT, LCD, plasma display or the like and an audio output device are combined, and for operating the receiver main body 1 Input unit 2. The input unit 2 is a remote controller capable of wireless communication with the receiving device body 1 or an input operation unit provided in the receiving device body 1 itself.

  The receiving apparatus main body 1 is obtained by adding a new configuration including an update notification processing unit 20, an update notification target document setting / release unit 30 and a storage unit 40 to the existing digital tuner unit 10. First, the configuration of the digital tuner unit 10 will be briefly described.

  The digital tuner unit 10 receives terrestrial digital broadcasts including data broadcasts and BS / CS digital broadcasts, and the main parts thereof are a tuner 11, a video decoder 12, an audio decoder 13, a video generation unit 14, an audio. It comprises a generation unit 15, a data content decoder 16, a data content analysis unit 17 and a display data generation unit 18.

  The tuner 11 receives a digital broadcast of a designated input channel. Of the data received by the tuner 11, video data is supplied to the video decoder 12, audio data is supplied to the audio decoder 13, and data content is supplied to the data content decoder 16. Here, the video data and the audio data are television broadcast data, and the data content is data broadcast data. The reception channel can be arbitrarily set on the input unit 2 by the user. For example, the user can designate a channel for receiving a digital broadcast from a desired broadcast station by an operation on the remote controller.

  The video decoder 12 decodes the video data from the tuner 11, and its output is supplied to the video generation unit 14. The video generation unit 14 generates video data to be displayed on the output unit 3 from the output of the video decoder 12. The audio decoder 13 decodes the audio data from the tuner 11, and the output is supplied to the audio generation unit 15. The sound generation unit 15 generates sound data to be output by the output unit 3 from the output of the sound decoder 13. The data content decoder 16 decodes data related to the data content supplied from the tuner 11, and its output is supplied to the data content analysis unit 17.

  The data content analysis unit 17 and the display data generation unit 18 are parts that implement the functions of a well-known BML (Broadcast Markup Language) browser. The data content analysis unit 17 performs analysis of the BML document output from the data content decoder 16, conversion processing to a predetermined expression format, processing of events generated by remote control operations, and the like. The display data generation unit 18 converts the data that has undergone each process by the data content analysis unit 17 into a format that can be displayed and displays the data on the output unit 3 (rendering process). As a result of the processing in the data content analysis unit 17 and the display data generation unit 18, the data broadcast screen of the received channel is displayed on the screen of the output unit 3. An arbitrary item can be selected to display a program. Further, by pressing a display / non-display switch button for a data broadcast screen provided in advance in the input unit 2 or by selecting and inputting a display / non-display switch button prepared on the data broadcast screen, a data broadcast program is displayed. The display / non-display can be arbitrarily switched.

  FIG. 2 shows a layout example of the display screen of the data broadcast program. This display screen is a stock price program display screen when a receiving channel is set as a digital broadcasting channel from a certain broadcasting station. An item “stock price” is displayed on the upper left of the screen, and a stock price list storing the closing price and the ratio of the previous day for each company name is displayed in the center of the screen. At the bottom of the screen, four buttons of “[Blue] News”, “[Red] Weather Information”, “[Green] Sports” and “[Yellow] Fortune-telling” are displayed as jump buttons to other programs. . The user can display an arbitrary program using these jump buttons.

  In the digital tuner unit 10 described above, data (data contents) of each program of “stock price”, “news”, “weather information”, “sports”, and “fortune telling” is constantly received by the tuner 11 and the data content decoder 16 Is supplied to the data content analysis unit 17. The data content analysis unit 17 analyzes address information (for example, URI (Uniform Resource Identifier)) and a title included in the data content of each program, and data corresponding to an item (address) arbitrarily designated by the user. The content is supplied to the display data generation unit 18. In the example of FIG. 2, since the user has selected the item “stock price”, the data content analysis unit 17 supplies the data content of “stock price” to the display data generation unit 18.

  Next, the configuration of the update notification processing unit 20, the update notification target document setting / cancellation unit 30, and the storage unit 40, which are features of the present embodiment, will be described.

  The storage unit 40 includes a semiconductor storage device, an HDD, and the like, and includes an update notification target document information storage unit 41 and an update notification target document configuration storage unit 42. When the update notification target document setting / cancellation unit 30 is in a state where a data broadcast program is displayed and an update notification target document instruction button provided in advance in the input unit 2 is pressed, the displayed data broadcast is displayed. The program is registered in the storage unit 40 as an update notification target document. For example, as shown in FIG. 2, when the update notification target document instruction button is pressed while a stock price program is displayed, the program “stock price” is registered as the update notification target document. In this registration, address information and title-related document information (hereinafter simply referred to as specific information) are updated as information for specifying an update notification target document (program) based on the data analyzed by the data content analysis unit 17. The layout and its detailed information (actual data) are stored in the target document information storage unit 41 and associated with the specific information stored in the update notification target document information storage unit 41 as the configuration information of the update notification target document (program). And stored in the update notification target document configuration storage unit 42.

  In addition to the update notification target document instruction button, the input unit 2 is provided with an update notification target document setting cancel button. When this update notification target document setting cancel button is pressed, the update notification target document setting button is pressed. The / release unit 30 displays a list of update notification target documents registered in the storage unit 40 on the output unit 3, and stores information on the update notification target document arbitrarily selected and input by the user on this display screen. Delete from. In this deletion, both the specific information and the configuration information of the relevant update notification target document are deleted.

  The update notification processing unit 20 is a means for notifying the user of data update related to the update notification target (program) registered in the storage unit 40, and includes the update notification target document confirmation unit 21 and the document update determination unit 22. And an update notification unit 23.

  The update notification target document confirmation unit 21 refers to the specific information stored in the update notification target document information storage unit 41, receives the data content ("" received by the tuner 11 and analyzed by the data content analysis unit 17). It is confirmed whether or not there is an update notification target document (program) in the data contents (document) of each program of “stock price”, “news”, “weather information”, “sports”, and “fortune telling”. When there is an update notification target document, the update notification target document confirmation unit 21 supplies the corresponding data content (including specific information and document configuration) to the document update determination unit 22.

  The document update determination unit 22 refers to the specific information included in the data content supplied from the update notification target document confirmation unit 21 and corresponds to the corresponding document configuration from the update notification target document configuration storage unit 42 (previous document configuration). And the comparison between the acquired document configuration and the document configuration of the data content supplied from the update notification target document confirmation unit 21 (the document configuration received this time) determines whether or not the data has been updated. . If the document update determination unit 22 determines that the data has been updated, the document update determination unit 22 updates the previous document configuration stored in the update notification target document configuration storage unit 42 based on the document configuration received this time. Due to the update of the document configuration, the update notification target document configuration storage unit 42 always stores the latest document configuration.

  In the data update determination in the document update determination unit 22, it is determined whether or not the basic layout is the same (screen identity determination) and whether or not detailed data has been updated (detailed information update determination). ) Is performed.

  In the determination of screen identity, for example, in the case of data content that is displayed on a screen as shown in FIG. If the location and content of [Blue] News, “[Red] Weather Information”, “[Green] Sports”, and “[Yellow] Fortune Telling” are all the same, the basic layout is It is determined that they are the same. In the detailed information update determination, when the data (the closing price and the previous day) in the list are different, it is determined that the detailed data has been updated.

  Normally, in the case of a BML document, buttons and tables (lists) are expressed as rectangular frames, and the display contents of the buttons are given as character strings or image files. FIG. 3 shows an example of an expression format on the screen of FIG. In this example, the screen size is “(0,0)-(960,540), background color: white”, the buttons and tables are represented as rectangles, and information on each rectangle includes coordinates, line width, line color, Information such as fill color, character string or reference file is included. In the case of such an expression format, it can be determined whether the basic layout is the same based on whether the coordinates of the rectangular frames are the same, and whether the same image file or character string is displayed. Thus, it can be determined whether or not the display contents are the same. In addition, the contents of the list often use a binary table. In such a case, determine whether the contents of the list are updated based on whether the same table is referenced. Can do.

  When the document update determination unit 22 determines that the basic layout is the same and the detailed data has been updated, the update notification unit 23 displays a notification message indicating that fact on the output unit 3. The notification message includes, for example, updated contents (summary of updated contents). Further, the address (URI) of the updated document may be displayed together with the updated content. In this case, it is possible to jump to the corresponding program by selectively inputting the displayed address (URI).

  Each processing in the data content analysis unit 17, the display data generation unit 18, the update notification processing unit 20, and the update notification target document setting / cancellation unit 30 described above is realized by a program prepared in advance. The program is stored in a storage device such as a ROM built in the receiving apparatus body 1, and a data processing unit (CPU) executes each process according to the program.

  Next, the operation of the digital broadcast receiving apparatus of this embodiment will be specifically described.

(1) Screen display processing:
Since this screen display process is well known, it will be briefly described here.

  First, the user selects a desired reception channel at the input unit 2. In the receiving apparatus body 1, the tuner 11 receives the digital broadcast on the reception channel selected by the user. The received video and audio data (television broadcast) is decoded by the video decoder 12 and the audio decoder 13 and then displayed on the output unit 3 by the video generation unit 14 and the audio generation unit 15 (display of the television broadcast screen). ). The received data content (data broadcast) is decoded by the data content decoder 16, analyzed by the data content analysis unit 17, and then displayed on the output unit 3 by the display data generation part 18 (display of the data broadcast screen) ).

  In the display of the data broadcast screen, first, a screen (index) serving as an entrance of the data broadcast program is displayed, and the user selects and inputs a desired program using the function of the BML browser. Is displayed. In the case of the display example shown in FIG. 2, for example, items such as “stock price”, “news”, “weather information”, “sports”, “fortune-telling” are displayed on the index screen, and the user sets the item “stock price”. By selecting and inputting, a screen as shown in FIG. 2 is displayed.

(2) Update notification target document setting / cancellation process:
(2a) Update notification target setting:
The user sets a desired data broadcast program as an update notification target. In the setting of the update notification target document, first, the user selects and inputs a desired data broadcast program item on the index screen by an operation using the input unit 2. In the receiving apparatus body 1, the display data generation unit 18 causes the output unit 3 to display the data content of the selected and input item. For example, when “stock price” is selected on the index screen, a screen as shown in FIG. 2 is displayed on the output unit 3.

  Subsequently, when the user presses the update notification target document instruction button of the input unit 2, the update notification target document setting / cancellation unit 30 displays information (specific information and document configuration) of the currently displayed program (data content). Is acquired from the update data content analysis unit 17. Then, the update notification target document setting / releasing unit 30 stores the specific information in the update notification target document information storage unit 41 and the document configuration in the update notification target document configuration storage unit 42, respectively.

  When setting another program as an update notification target, the user displays the corresponding other program and presses the update notification target document instruction button. When the update notification target document instruction button is pressed, the update notification target document setting / cancellation unit 30 acquires from the update data content analysis unit 17 specific information and document configuration of the displayed program (corresponding other program). Then, it is stored in the update notification target document information storage unit 41 and the update notification target document configuration storage unit 42.

(2b) Canceling the update notification target setting:
When canceling the update notification target setting, the user presses the update notification target document setting cancel button of the input unit 2. When the update notification target document setting cancel button is pressed, the update notification target document setting / cancellation unit 30 is set as an update notification target based on the specific information stored in the update notification target document information storage unit 41. A list of documents is displayed on the output unit 3. In this list, specific information is displayed together with the document name (program name). When the user selects and inputs a document (program) whose setting is to be canceled, the update notification target document setting / cancellation unit 30 applies the information from the update notification target document information storage unit 41 based on the specific information regarding the selected and input document. The specific information to be deleted is deleted, and the corresponding document configuration is deleted from the update notification target document configuration storage unit 42. After deletion, for confirmation, the update notification target document setting / cancelling unit 30 may display a list of current documents that are subject to update notification on the output unit 3.

(3) Data broadcast update notification processing:
FIG. 4 shows the flow of the data broadcast update notification process. First, the user selects a desired reception channel at the input unit 2. In the receiver main unit 1, the tuner 11 receives the digital broadcast on the reception channel selected by the user (step S101). Of the received data, the data content is supplied to the data content analysis unit 17 via the data content decoder 16 where the content is analyzed.

  When the content analysis is performed, the update notification target document confirmation unit 21 refers to the specific information stored in the update notification target document information storage unit 41, and the data content analysis unit 17 analyzes the data content. It is checked whether there is an update notification target document (program) (step S102). If there is no update notification target document, the data broadcast update notification processing is terminated. If there is an update notification target document, the update notification target document confirmation unit 21 supplies the corresponding data content (including specific information and document configuration) to the document update determination unit 22.

  The document update determination unit 22 refers to the data content identification information supplied from the update notification target document confirmation unit 21, acquires the corresponding document configuration (previous document configuration) from the update notification target document configuration storage unit 42, The acquired document structure is compared with the document structure of the data content supplied from the update notification target document confirmation unit 21 (step S103). Next, the document update determination unit 22 determines whether or not the basic layout is the same based on the comparison result (step S104). If the basic layout does not match, the data broadcast update notification process is terminated.

  If the basic layouts match, then the document update determination unit 22 determines whether the detailed information (actual data) has been updated (step S105). If the detailed information has not been updated, the data broadcast update notification process is terminated. If the detailed information has been updated, the update notification unit 23 causes the output unit 3 to display a message indicating that the data has been updated (step S106).

  According to the data broadcast update notification processing described above, the program (document) received on the currently set reception channel among the programs (documents) designated by the update notification target document instruction button is displayed on the screen. The user can be notified of the data update without being displayed. For example, in the example shown in FIG. 2, if “stock price” is set as a notification document to be updated, other programs of “news”, “weather information”, “sports”, and “fortune telling” are set to “stock price”. Even when the information is displayed instead, when the detailed information of “stock price” (actual data indicated by the broken line A) is changed, this is displayed on the screen. This display allows the user to know that the “stock price” program has been updated.

(Embodiment 2)
In the digital broadcast receiving apparatus according to the first embodiment, when there is a program set as an update notification target among currently received data broadcast programs, data update of the program is notified. However, it is also possible to automatically check and notify the data update of the programs of all reception channels set as update notification targets. Here, a mode in which such data update notification is possible will be described.

  FIG. 5 is a block diagram showing a schematic configuration of a digital broadcast receiving apparatus according to the second embodiment of the present invention. This digital broadcast receiving apparatus is obtained by adding an automatic channel setting unit 100, a tuner 111, and a data content decoder 116 to the configuration shown in FIG. In FIG. 5, parts that are basically the same as those shown in FIG. Further, for the sake of convenience, portions for processing video and audio are omitted.

  The storage unit 40 stores data broadcast program identification information and document structure related to a plurality of broadcast stations (reception channels) in association with channel information that can identify each reception channel. FIG. 6 shows an example of specific information stored in the update notification target document information storage unit 41. In this example, for broadcast channel A of the digital broadcast from the first broadcast station, the specific information of the programs A1 and A2 to be notified of update is stored, and for the broadcast channel B of the digital broadcast from the second broadcast station, The specific information of the programs B1 and B2 that are update notification targets is stored. Similarly, in the update notification target document configuration storage unit 41, the document configurations of the programs A1 and A2 and the document configurations of the programs B1 and B2 are stored for each of the reception channels A and B.

  The automatic channel setting unit 100 periodically switches the setting of the reception channel in the tuner 111 within the range of the reception channel stored in the storage unit 40 as an update notification target. For example, in the case of the example of FIG. 6, the information about the reception channels A and B is stored in the update notification target document information storage unit 41, so the channel automatic setting unit 100 receives the setting of the reception channel in the tuner 111. Switching between channels A and B periodically. The automatic channel setting unit 100 notifies the update notification target document confirmation unit 21 of the current reception channel set in the tuner 111. In FIG. 5, for the sake of convenience, only the output of data contents is shown as the output of the tuner 111. However, as with the tuner 11, data relating to video and audio is output from the tuner 111, and the video and audio decoders are respectively output. It can also be configured to be decoded.

  The data content decoder 116 decodes the data content received by the tuner 111. Since the reception channel in the tuner 111 is periodically switched by the control by the automatic channel setting unit 100, for example, in the case of the example of FIG. 6, the data content decoder 111 receives the data received on the reception channel A and the data received on the reception channel B. Are alternately input and decoded. The decoded data is supplied to the data content analysis unit 17.

  The data content analysis unit 17 analyzes data supplied from the data content decoder 11 as described in the first embodiment, and analyzes data supplied from the data content decoder 111. In the present embodiment, the analysis result of the data supplied from the data content decoder 111 is supplied to the update notification processing unit 20.

  The update notification processing unit 20 notifies the data update related to the update notification target document stored in the storage unit 40 based on the analysis result of the data supplied from the data content analysis unit 17. Specifically, the update notification target document confirmation unit 21 refers to the specific information corresponding to the current reception channel notified from the channel automatic setting unit 100 and stored in the update notification target document information storage unit 41. Then, it is confirmed whether or not there is an update notification target document (program) in the data content received by the tuner 111 and analyzed by the data content analysis unit 17. If there is an update notification target document, the update notification target document confirmation unit 21 supplies the corresponding data content (including specific information and document configuration) to the document update determination unit 22. The document update determination unit 22 refers to the specific information included in the data content supplied from the update notification target document confirmation unit 21 and corresponds to the corresponding document configuration from the update notification target document configuration storage unit 42 (previous document configuration). And the comparison between the acquired document structure and the document structure of the data content supplied from the update notification target document confirmation unit 21 makes a screen identity determination and a detailed information update determination. The update notification unit 23 displays a message to that effect on the output unit 3 only when it is determined that the basic layout is the same and detailed data has been updated.

  Next, the operation of the digital broadcast receiving apparatus of this embodiment will be specifically described. Since the screen display process and the update notification target document setting / cancellation process are the same as those in the first embodiment described above, description thereof will be omitted here, and only the characteristic data broadcast update notification process will be described. explain. Hereinafter, the operation will be described assuming that the information as shown in FIG. 6 is stored in the update notification target document information storage unit 41.

  Since the update notification target document information storage unit 41 stores the programs A1, A2, B1, and B2 related to the data broadcasting of the reception channels A and B as update notification targets, the channel automatic setting unit 100 receives the data in the tuner 111. The channel setting is periodically switched between the reception channels A and B.

  During the period in which the reception channel A is set, the tuner 111 receives digital broadcast on the reception channel A and supplies the received data content to the data content decoder 116. The data content decoder 116 decodes the data content supplied from the tuner 111. The decoded data content is supplied to the data content analysis unit 17. The data content analysis unit 17 analyzes the data content supplied from the data content decoder 116. This analysis result is supplied to the update notification processing unit 20.

  In the update notification processing unit 20, first, the update notification target document confirmation unit 21 refers to the specific information of the programs A1 and A2 stored in the column of the reception channel A in the update notification target document information storage unit 41. It is confirmed whether or not there is a document related to the programs A1 and A2 in the data content analyzed by the data content analysis unit 17. Here, since the data content analyzed by the data content analysis unit 17 is data received by the reception channel A, it includes documents relating to the programs A1 and A2. Therefore, the update notification target document confirmation unit 21 determines that there is an update notification target document, and supplies data contents (including specific information and document configuration) related to the programs A1 and A2 to the document update determination unit 22.

  When the data content relating to the programs A1 and A2 is supplied from the update notification target document confirmation unit 21, the document update determination unit 22 determines whether or not data update has been performed for each of the programs A1 and A2. In this determination, first, with reference to the specific information included in the data content of the program A1, the document configuration related to the program A1 (previous document configuration) is obtained from the update notification target document configuration storage unit 42. Then, by comparing the acquired document configuration (previous document configuration) with the document configuration of the data content related to the program A1 supplied from the update notification target document confirmation unit 21, it is possible to determine screen identity and update detailed information. Make a decision. In the same manner, the program A2 is also subjected to the screen identity determination and the detailed information update determination compared to the previous document configuration. These determination results are supplied to the update notification unit 23.

  The update notification unit 23 outputs a message to that effect to the output unit 3 only when it is determined that the basic layout is the same and detailed data has been updated.

  During the period in which the reception channel B is set, the tuner 111 receives a digital broadcast on the reception channel B. The received data content is decoded by the data content decoder 116 and then supplied to the data content analysis unit 17. The data content analysis unit 17 analyzes the data content supplied from the data content decoder 116. This analysis result is supplied to the update notification processing unit 20.

  In the update notification processing unit 20, first, the update notification target document confirmation unit 21 refers to the specific information of the programs B1 and B2 stored in the column of the reception channel B in the update notification target document information storage unit 41. It is confirmed whether or not there is a document related to the programs B1 and B2 in the data content analyzed by the data content analysis unit 17. Here, since the data content analyzed by the data content analysis unit 17 is data received through the reception channel B, it includes documents relating to the programs B1 and B2. Therefore, the update notification target document confirmation unit 21 determines that there is an update notification target document, and supplies data content (including specific information and document configuration) related to the programs B1 and B2 to the document update determination unit 22.

  When the data content related to the programs B1 and B2 is supplied from the update notification target document confirmation unit 21, the document update determination unit 22 determines whether or not data update has been performed for each of the programs B1 and B2. In this determination, first, with reference to the specific information included in the data content of the program B1, the document configuration (previous document configuration) related to the program B1 is acquired from the update notification target document configuration storage unit 42. Then, by comparing the acquired document configuration (previous document configuration) with the document configuration of the data content related to the program B1 supplied from the update notification target document confirmation unit 21, it is possible to determine screen identity and update detailed information. Make a decision. Similarly, the program B2 is also subjected to the screen identity determination and the detailed information update determination as compared with the previous document configuration. These determination results are supplied to the update notification unit 23.

  The update notification unit 23 outputs a message to that effect to the output unit 3 only when it is determined that the basic layout is the same and detailed data has been updated.

  According to the above data broadcast update notification processing, even when a user designates a program of a different reception channel as an update notification target, the data of those reception channels is periodically received by the tuner 111 and is sent to the update notification processing unit 20. The data update is automatically determined. Therefore, it is possible to notify the user of the update of the broadcast contents for all programs designated as update notification targets.

  Note that the above-described configuration and operation are examples, and are appropriately changed. For example, three or more tuners may be provided. However, considering the cost aspect, the number of tuners is preferably two.

  Further, the automatic channel setting unit 100 notifies the update notification target document confirmation unit 21 of the current reception channel set in the tuner 111, so that the confirmation in the update notification target document confirmation unit 21 is received in the tuner 111. Although it synchronizes with a channel, when there are few receiving channels stored in the memory | storage part 40, it is good also as a structure which does not take such a synchronization. In this case, the update notification target document confirmation unit 21 refers to the specific information regarding all reception channels stored in the storage unit 40 and confirms whether the update notification target document is included.

  Further, the channel switching period of the automatic channel setting unit 100 may be arbitrarily set by the user at the input unit 2. Thereby, the reception channel can be switched at an optimum cycle according to the update cycle of the broadcast content of the data broadcast program registered in the storage unit 40 as the update notification target.

(Embodiment 3)
In the digital broadcast receivers of the first and second embodiments, when a data update notification is made, a button for directly jumping to the updated program (document) is displayed on the notification screen. The user can select and input the button to switch the screen to the updated program (document). Here, an embodiment having such a jump function will be described.

  FIG. 7 is a block diagram showing a schematic configuration of a digital broadcast receiving apparatus according to the third embodiment of the present invention. This digital broadcast receiving apparatus is obtained by adding an update document designation processing unit 50 to the configuration shown in FIG. In FIG. 7, parts that are basically the same as those shown in FIG. In order to avoid duplication of explanation, only the points different from those of the first embodiment will be described here.

  When the document update determination unit 22 determines that the basic layout is the same and the detailed information has been updated, the update notification unit 23 causes the output unit 3 to display a message to that effect and update the information. Display a jump button to the selected document (program). As a message in this case, the “Stock Price” page has been updated. Click the [Jump] button to display the update page. A message such as “

  The document update determination unit 22 supplies the update document designation processing unit 50 with the specific information (address) of the document that is determined to have the same basic layout and that the detailed information has been updated. The update document designation processing unit 50 is supplied from the document update determination unit 22 to the data content analysis unit 17 when the user selects and inputs a jump button by an operation on the input unit 2 on the data update notification screen. The jump to the specific information (address) of the updated document is instructed. When the data content analysis unit 17 receives a jump instruction from the update document specification processing unit 50 to the specific information (address) of the update document, the data content analysis unit 17 displays the analysis result of the corresponding data content based on the specific information (address). It supplies to the production | generation part 18. As a result, the updated document (program) is displayed on the screen.

  Next, the operation of the digital broadcast receiving apparatus of this embodiment will be described. Since the screen display process and the update notification target document setting / cancellation process are the same as those in the first embodiment, the description thereof is omitted here. In the present embodiment, a part of the data broadcast update notification process is different from that in the first embodiment.

  FIG. 8 shows the flow of the data broadcast update notification process. Steps S101 to S106 are performed in the same manner as in the first embodiment. However, in step S106, a data update notification screen including a jump button is displayed. When the jump button is selected and input on the data update notification screen, the update document designation processing unit 50 determines that the movement to the update document has been instructed (step S107), and the data content analysis unit 17 is instructed. Thus, the jump to the specific information (address) of the updated document supplied from the document update determination unit 22 is instructed. Then, the data content analysis unit 17 supplies the analysis result of the corresponding data content to the display data generation unit 18 according to the jump instruction. As a result, the updated document (program) is displayed on the screen (step S108).

  According to the data broadcast update notification process described above, the user can easily browse the updated document (program) by selecting and inputting the jump button.

  In the above description, the jump function is added to the configuration of the first embodiment. However, the same configuration can be used in the second embodiment.

(Embodiment 4)
In the digital broadcast receivers of the first to third embodiments, in order to set the update notification target, the user needs to press the update notification target document instruction button while displaying a desired program. The update notification target can be automatically set. Here, a mode provided with a learning function capable of such automatic setting will be described.

  FIG. 9 is a block diagram showing the configuration of the update notification target document setting / releasing unit of the digital broadcast receiving apparatus according to the fourth embodiment of the present invention. The digital broadcast receiving apparatus of the present embodiment is obtained by adding an update notification target document learning unit 31 to the update notification target document setting / releasing unit 30 in the configuration shown in FIG. The other parts are the same as those shown in FIG. In order to avoid duplication of explanation, only the points different from those of the first embodiment will be described here.

  In the present embodiment, a predetermined period after the activation of the digital tuner unit 10 is a learning period for determining an update sentence target document. The update notification target document learning unit 31 collects the data content displayed by the data content analysis unit 17 during the learning period, that is, the history of the program viewed by the user using the BML browser. Specifically, the update notification target document learning unit 31 stores history information (not shown) in association with information (address or title) that identifies a program that has browsed information such as the date and time of browsing (time). Store in the device. In addition, the update notification target document learning unit 31 registers a program that satisfies a specific condition in the storage unit 40 as an update notification target based on the history stored in the storage device. Here, the program that satisfies the specific condition is a program that meets the user's preference, for example, a program that has been browsed more than a predetermined number of times every day. The registration of the update notification target document in the storage unit 40 is the same as the registration in the first embodiment, and the specific information and the document configuration of the update notification target document are the update notification target document information storage unit 41 and the update notification target document configuration, respectively. It is stored in the storage unit 42.

  According to the registration of the update notification target document by the update notification target document learning unit 31, a program that meets the user's preference is automatically registered in the storage unit 40 as an update notification target. Therefore, since the user does not have to perform an operation such as displaying and specifying a program in order to set the update notification target document, the convenience is further improved.

  The automatic registration of the update notification target document described above can be changed as appropriate. For example, the update notification target document learning unit 31 simply causes the output unit 3 to display information on a program whose browsing count exceeds a predetermined number, and allows the user to determine whether or not to register the update notification target document. You can also. In this case, a registration button and a cancel button are displayed. When the registration button is selected, the displayed program is registered as an update notification target. When the cancel button is selected, the display is returned to the previous display screen. It may be.

  In the above description, the update notification target document learning unit is added to the configuration of the first embodiment. However, the same configuration can be used in the second and third embodiments.

(Embodiment 5)
In the digital method receivers of the first to fourth embodiments, the update notification unit displays a message indicating that data update has been performed. As this message, a message summarizing the data update content is displayed. It can also be displayed. Here, a form in which such data update contents can be summarized will be described.

  FIG. 10 is a block diagram showing the configuration of the update notification processing unit and the storage unit of the digital broadcast receiving apparatus which is the fifth embodiment of the present invention. In the configuration shown in FIG. 1, the digital broadcast receiving apparatus of this embodiment adds a notification content summary unit 24 to the update notification unit 23 of the update notification processing unit 20 and adds a summary fixed phrase storage unit 43 to the storage unit 40. It is a thing. The other parts are the same as those shown in FIG. In order to avoid duplication of explanation, only the points different from those of the first embodiment will be described here.

In the summary fixed sentence storage unit 43, a fixed sentence for creating a data update summary is stored in advance for each data broadcast program. For example, if it is a weather information program,
-[Date]-[Weekly weather forecast until [Date].

  ・ The maximum temperature of [Place Name] in [Date] is now [Numeric] degrees.

• The image file for [Place Name] in [Date] is now [Text].
Such a fixed sentence is stored in advance. And if it ’s a stock price program,
-There are [Numeric] updates for [Type].

・ The stock price of [Brand] has changed to [Numeric] yen.
Such a fixed sentence is stored in advance. Here, the inside of “[]” is a variable element.

  When displaying the data update message, the notification content summarizing unit 24 acquires the optimal fixed phrase from the summary fixed phrase storage unit 43 based on the data update content, and the “[]” of the acquired fixed phrase Information corresponding to the variable element is acquired from the data content analysis unit 17 and incorporated into the fixed sentence. A summary of the data update created in this way is displayed as a message.

  According to the data update summary, the user can easily grasp the contents of the data update from the displayed summary.

  Although the above description has been made by adding a part for summarizing data update in the configuration of the first embodiment, the same configuration can also be adopted in the second to fourth embodiments.

(Embodiment 6)
In the digital method receivers of the first to fifth embodiments, a message indicating that data has been updated is displayed or a summary thereof is displayed. However, the program screen on which data has been updated is displayed. A list can also be displayed. Here, a mode capable of displaying such a list will be described.

  FIG. 11 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to the sixth embodiment of the present invention. The digital broadcast receiving apparatus of the present embodiment is obtained by adding a thumbnail image generating unit 60 to the configuration shown in FIG. The other parts are the same as those shown in FIG. In order to avoid duplication of explanation, only the points different from those of the first embodiment will be described here.

  The document update determination unit 22 supplies the thumbnail image generation unit 60 with information (specific information) related to the program that has been determined to have been updated. Based on the information (specific information) from the document update determination unit 22, the thumbnail image generation unit 60 acquires display data of a program whose data has been updated from the data content analysis unit 17 through the display data generation unit 18. Thumbnail image data is generated by reducing the acquired display data to an appropriate size, and the generated thumbnail image data is displayed on the output unit 3. In the thumbnail image display by the thumbnail image generation unit 60, it is possible to display thumbnail images of a plurality of programs.

  According to the display of the thumbnail image, the user can easily grasp the program whose data has been updated from the list of displayed thumbnail images.

  In the above description, the thumbnail image generation unit 60 is added to the configuration of the first embodiment. However, the same configuration can be used in the second to fifth embodiments.

  In each of the embodiments described above, the configuration and operation can be changed as appropriate without departing from the spirit of the present invention. For example, if the determination in step S104 of FIG. 4 is “No”, a message indicating that the layout has changed may be displayed. Thus, the user can immediately update the corresponding document configuration in the storage unit 40 when the layout changes. The present invention can also be applied to things other than BML documents, such as HTML, XML, and MHEG.

It is a block diagram which shows schematic structure of the digital broadcast receiver which is the 1st Embodiment of this invention. It is a schematic diagram which shows the example of a layout of the display screen of a data broadcast program. It is a figure which shows an example of the expression format in the screen of FIG. It is a flowchart for demonstrating operation | movement of the digital broadcast receiver shown in FIG. It is a block diagram which shows schematic structure of the digital broadcast receiver which is the 2nd Embodiment of this invention. It is a figure which shows an example of the specific information stored in the update notification object document information storage part shown in FIG. It is a block diagram which shows schematic structure of the digital broadcast receiver which is the 3rd Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the digital broadcast receiver shown in FIG. It is a block diagram for demonstrating the structure of the digital broadcast receiver which is the 4th Embodiment of this invention. It is a block diagram for demonstrating the structure of the digital broadcast receiver which is the 5th Embodiment of this invention. It is a block diagram which shows the structure of the digital broadcast receiver which is the 6th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Receiver main body 2 Input part 3 Output part 10 Digital tuner part 11, 111 Tuner 12 Video decoder 13 Audio decoder 14 Video generation part 15 Audio generation part 16, 116 Data content decoder 17 Data content analysis part 18 Display data generation part 20 Update Notification processing unit 21 Update notification target document confirmation unit 22 Update document determination unit 23 Update notification unit 24 Notification content summary unit 30 Update notification target document setting / cancellation unit 31 Update notification target document learning unit 40 Storage unit 41 Update notification target document information storage Unit 42 update notification target document configuration storage unit 43 summary fixed phrase storage unit 50 update document designation processing unit 60 thumbnail image generation unit 100 automatic channel setting

Claims (20)

From content including document information that can specify a data broadcast program, a layout that indicates the arrangement of items that constitute a broadcast screen of the data broadcast program, and a document configuration that includes actual data provided as information specified by the items and a tuner for receiving a data broadcast to be,
A storage unit that stores the document information and the document configuration related to the data broadcast program to be updated;
An update notification target document confirmation unit for confirming whether the data broadcast currently received by the tuner has content including document information stored in the storage unit;
When the update notification target document confirmation unit determines that there is content including the document information stored in the storage unit, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit. When the layout is the same and the actual data is different, it is determined that the data has been updated, and the corresponding document configuration stored in the storage unit is updated based on the document configuration of the compared contents A determination unit;
A digital broadcast receiving apparatus, comprising: an update notification unit that outputs a message to that effect to an external display device when it is determined that data update has been performed by the document update determination unit. From content including document information that can specify a data broadcast program, a layout that indicates the arrangement of items that constitute a broadcast screen of the data broadcast program, and a document configuration that includes actual data provided as information specified by the items a plurality of tuners for receiving data broadcasting comprising,
A storage unit that stores the document information and document configuration related to the data broadcast program that is an update notification target in association with channel information that can identify each reception channel for a plurality of reception channels;
A channel automatic setting unit that periodically switches setting of a reception channel in a predetermined tuner among the plurality of tuners within a range of reception channels corresponding to each channel information stored in the storage unit;
An update notification target document confirmation unit for confirming whether there is content including document information stored in the storage unit in the data broadcast currently received by the predetermined tuner;
When the update notification target document confirmation unit determines that there is content including the document information stored in the storage unit, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit. When the layout is the same and the actual data is different, it is determined that the data has been updated, and the corresponding document configuration stored in the storage unit is updated based on the document configuration of the compared contents A determination unit;
A digital broadcast receiving apparatus, comprising: an update notification unit that outputs a message to that effect to an external display device when it is determined that data update has been performed by the document update determination unit. The channel automatic setting unit notifies the update notification target document confirmation unit of the current reception channel set in the predetermined tuner,
The update notification target document confirmation unit performs the confirmation based on document information stored in the storage unit in association with channel information corresponding to a current reception channel notified from the channel automatic setting unit. Item 3. The digital broadcast receiver according to Item 2.   The digital broadcast receiver according to claim 2, wherein the channel automatic setting unit is configured to be able to adjust a switching cycle of the setting of the reception channel.   The digital update according to any one of claims 1 to 4, wherein the update notification unit causes the external display device to display a jump button for directly shifting to the program in which the data update is performed together with the message. Broadcast receiving device. An input operation unit;
A data content analysis unit that analyzes the content of the data broadcast program included in the currently received data broadcast and outputs data related to the program specified by the input operation unit;
A display data generation unit that generates display data based on data output from the data content analysis unit and outputs the display data to the external display device;
When an input to set an update notification target document is made in the input operation unit, the document information and document structure of the data broadcast program currently displayed on the display device are acquired from the data content analysis unit. The digital broadcast receiving apparatus according to claim 1, further comprising an update notification target document setting unit stored in the storage unit.   The update notification target document setting unit takes a history of the data broadcast program displayed on the external display device by the data content analysis unit and the display data generation unit in a preset learning period, and based on the history The digital broadcast receiving apparatus according to claim 6, wherein a data broadcast program that has been displayed a predetermined number of times or more is registered in the storage unit as an update notification target.   The update notification target document setting unit causes the external display device to display a list of data broadcast programs that have been displayed a predetermined number of times or more, and a program that is designated and input from the displayed list by the input operation unit The digital broadcast receiving apparatus according to claim 7, wherein an update notification target is registered in the storage unit. For each data broadcast program, further includes a summary fixed sentence storage unit in which a fixed sentence for data update summary creation including variable elements is stored in advance,
The update notification unit obtains a fixed phrase related to a program for which data update has been determined by the document update determination unit from the summary fixed phrase storage unit, and information corresponding to variable elements of the acquired fixed phrase The digital broadcast receiving apparatus according to claim 6, wherein a summary is created by acquiring the summary from the data content analysis unit and incorporating it into the fixed phrase, and outputting the created summary to the external display device.   For the program determined to have been updated by the document update determination unit, display data is acquired from the data content analysis unit through the display data generation unit, and the acquired display data is reduced to an appropriate size to obtain thumbnail image data. The digital broadcast receiving apparatus according to claim 6, further comprising a thumbnail image generating unit that generates and outputs the generated thumbnail image data to the external display device. From content including document information that can specify a data broadcast program, a layout that indicates the arrangement of items that constitute a broadcast screen of the data broadcast program, and a document configuration that includes actual data provided as information specified by the items a data broadcast update notification method performed in a receiving apparatus having a tuner for receiving a data broadcast comprising,
A first step of associating and storing the document information and document configuration relating to the data broadcast program to be updated in the storage unit of the receiving device;
A second step of confirming whether or not there is content including document information stored in the storage unit in the data broadcast currently received by the tuner;
When it is determined in the second step that there is content, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit, and the layout is the same and the actual data is different A third step of determining that the data has been updated;
When it is determined that the data has been updated in the third step, a message to that effect is displayed on an external display device, and the corresponding document structure stored in the storage unit is compared with the document structure of the content. And a fourth step of updating based on the data broadcast update notification method. From content including document information that can specify a data broadcast program, a layout that indicates the arrangement of items that constitute a broadcast screen of the data broadcast program, and a document configuration that includes actual data provided as information specified by the items a data broadcast update notification method performed in a receiving apparatus having a plurality of tuners for receiving data broadcasting comprising,
A first step of storing the document information and the document configuration in a storage unit of the receiving device in association with channel information capable of specifying each receiving channel for a data broadcast program related to a plurality of receiving channels;
A second step of periodically switching the setting of a reception channel in a predetermined tuner among the plurality of tuners within a range of reception channels corresponding to each channel information stored in the storage unit;
A third step of confirming whether there is content including document information stored in the storage unit in the data broadcast currently received by the predetermined tuner;
When it is determined that there is content in the third step, the document configuration of the content is compared with the corresponding document configuration stored in the storage unit, and the layout is the same and the actual data is different A fourth step of determining that the data has been updated;
When it is determined that the data has been updated in the fourth step, a message to that effect is displayed on an external display device, and the corresponding document configuration stored in the storage unit is compared with the document configuration of the content And a fifth step of updating based on the data broadcast update notification method.   In the third step, the current reception channel set in the predetermined tuner is acquired, and the document information stored in the storage unit is associated with the channel information corresponding to the acquired reception channel. The data broadcast update notification method according to claim 12, wherein confirmation is performed.   13. The data broadcast update notification method according to claim 12, wherein the reception channel setting switching period in the second step is a channel switching period input from an input operation unit provided in the receiving apparatus.   The data broadcast update notification method according to claim 11 or 12, further comprising a step of causing the external display device to display a jump button for directly shifting to the program in which the data update is performed together with the message.   In the first step, the document information of the data broadcast program currently displayed on the display device when an input to set the update notification target document is made by the input operation unit provided in the receiving device. The data broadcast update notification method according to claim 11, further comprising: storing a document configuration in the storage unit. The first step includes
Taking a history of data broadcast programs displayed on the external display device in a preset learning period;
The data broadcast update notification method according to claim 11, further comprising: registering a data broadcast program that has been displayed a predetermined number of times or more based on the history in the storage unit as an update notification target. The first step includes
Displaying a list of data broadcast programs that have been displayed more than a predetermined number of times on the external display device;
The data broadcast update notification method according to claim 17, further comprising the step of: registering a program designated and input by the input operation unit from the displayed list in the storage unit as an update notification target. Storing a fixed sentence for creating a data update summary including variable elements in the storage unit for each data broadcast program;
Obtaining a fixed phrase related to a program for which it is determined that the data update has been performed from the storage unit;
Obtaining information corresponding to the variable elements of the acquired fixed sentence from the currently received data broadcast, incorporating the information into the fixed sentence, and displaying the generated summary as the message; The data broadcast update notification method according to claim 11 or 12, further comprising: Creating display data from the currently received data broadcast for the program determined to have been updated;
Reducing the created display data to an appropriate size to generate thumbnail image data;
The data broadcast update notification method according to claim 11, further comprising: displaying the generated thumbnail image data on the external display device.

Images