JP4628261B2 - Broadcast receiving apparatus and reception quality prediction method - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus and a reception quality prediction method.

  Broadcast types of digital terrestrial television broadcasting include 13 segment broadcasting, 3 segment broadcasting (3 segment broadcasting), and 1 segment broadcasting (1 segment broadcasting). The terrestrial digital broadcasting service that has already started as of 2004 is a 13-segment broadcasting that divides one channel into 13 bands (this is called a segment) and transmits it mainly for home TV. Yes. What is broadcast using 1 to 3 segments out of 13 segments is so-called 1-segment broadcasting or 3-segment broadcasting, which is mainly intended for small portable devices with high portability. In recent years, research and development of portable television terminals have been progressing to cope with this broadcasting, and a technique of incorporating a television tuner in a cellular phone is known (see, for example, Patent Document 1).

By the way, products with a program recording function have a function that makes it easy to record a program by displaying the recording history and viewing history at the next program recording, such as an HDD (hard disk drive) recorder or a PC (personal computer). In the future, it is considered that mobile TV terminals will also have a function that allows easy viewing and recording based on the viewing history and recording history.
JP 2002-9920 (paragraph 0009, FIG. 1)

  Conventionally, it is assumed that the antenna and the TV tuner are fixed and the reception environment is always good. However, video and audio cannot be played back successfully depending on the reception state (level, quality) of the broadcast wave as the mobile TV terminal moves, that is, the program has been recorded but not actually recorded, or the recorded program There was a problem that some dropped out. Alternatively, when viewing started, the reception environment was good, but the reception environment deteriorated later, and there was a problem that viewing was impossible. The above prior art does not mention any approach to the problem related to the reception state accompanying these movements.

Therefore, in order to solve the above-described problems, the broadcast receiving apparatus according to the first invention
It is characterized by comprising storage means for storing the reception quality (level, error rate, etc.) of the channel selected or recorded and the reception time information (measured by the timer function) as reception quality history. The reception time information preferably includes, for example, a date, day of the week, reception start time, reception end time, and the like. In addition, it is preferable to include display means (display) for displaying the reception quality history stored in the storage means as visual information and audio output means (speaker) for outputting as audio information. Further, the broadcast receiving apparatus receives a program viewing instruction , searches the reception quality history for a history having the same condition as the time and channel at which the instruction is received or a history close to the condition, and It is further characterized by further comprising an informing means for informing as the predicted quality of the channel . That is, based on the instructed time, the corresponding one is searched from the reception quality history, and the predicted quality based on the search result is notified.

The broadcast receiving apparatus according to the second invention is
It is characterized by comprising storage means for storing the reception quality (level, error rate, etc.) of the channel selected or recorded and the reception time information (measured by the timer function) as reception quality history. Also, the broadcast receiving apparatus receives a recording reservation instruction for a program , searches the reception quality history for a history having the same condition as the recording time and channel at which the reservation instruction was received or a history close to the condition, and It is further characterized by further comprising an informing means for informing the predicted quality of the channel at the recording time. For example, when viewing a program, the user receives a program that the user wants to view or record from the reception quality history from the program start time to the program end time on the same day or at the same time or from the reception quality history from the recording start time to the recording end time. It is preferable to predict and notify the quality.

As described above, the solution of the present invention has been described as an apparatus. However, the present invention can be realized as a method, a program, and a storage medium that stores the program substantially corresponding to these, and the scope of the present invention. It should be understood that these are also included.
For example, the reception quality prediction method of the broadcast receiving apparatus according to the third aspect of the present invention realized as a method is as follows:
The reception quality (level, error rate, etc.) of the selected or recorded channel and the reception time information (measured by the timer function ) are stored in the storage means (HDD, flash memory, etc.) as reception quality history, and the program is viewed As a predicted quality of the channel in the program viewing , the stored history of the reception quality history is searched for a history having the same condition as the time and the channel at which the instruction is received or a history close to the condition. And a step of notifying.
Also, the reception quality prediction method of the broadcast receiving apparatus according to the fourth aspect of the present invention realized as a method is as follows:
The reception quality (level, error rate, etc.) of the selected or recorded channel and the reception time information (measured by the timer function) are stored in the storage means (HDD, flash memory, etc.) as reception quality history, and the program is recorded. From the stored reception quality history, search the history of the condition that is the same as the time and the channel that received the instruction or a history that is close to the condition, and predict the channel at the recording time of the program The method includes a step of notifying as quality.

  Since the broadcast receiving apparatus according to the present invention has means for storing it as a time-dependent history of the currently received reception quality state, if the stored reception quality history is displayed, the user checks the user's own action pattern. In addition, it is possible to confirm at which time and in which place the reception quality state was good. Therefore, if there is a reception quality history including reception quality and time information at the time of reception as in the present invention, a prediction of the reception quality state in view of its own action pattern can be obtained. Therefore, in the mobile broadcast receiving apparatus, it is possible to avoid interruption of program video and audio based on quality prediction using the reception quality history.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a portable television terminal (broadcast receiving device) of the present invention. The mobile TV terminal 1 includes a tuning unit 2 that can be selected by the user, a tuner 3 that receives and tunes broadcast waves, an antenna 4, a timer 5 that manages the time of reception, and a reception quality that manages a reception quality history. History management unit 6, storage device 7 for storing reception quality history and program, viewing / recording quality prediction unit 8 for predicting current or future viewing / recording quality from reception quality history and current time, prediction result or reception quality It comprises a display unit 9 for displaying a history or a television program, and an audio unit 10. Here, the viewing / recording quality prediction unit 8, the display unit 9, and the audio unit 10 together form a notification unit that notifies the user of the prediction quality.

  FIG. 2 is a diagram showing an example of reception quality history of the portable television terminal according to the present invention. The portable television terminal 1 registers the reception quality in the reception quality history stored in the storage device 7 when a channel selection operation or recording start is performed by the channel selection unit 2 by the user. The reception quality history to be registered is configured to be registered when viewing / recording on a certain channel for a certain time so as not to be processed in the case of zapping. As shown in FIG. 2 (a), the information to be registered includes channel (ch), date, day of the week, viewing / recording attribute, start time and end time, viewing / recording time, and further as shown in FIG. 2 (b). This is detailed reception quality information at regular intervals from the start of viewing to the end of viewing. The portable television terminal 1 presents the reception quality history to support the user's reception quality prediction, or presents the reception quality predicted based on the reception quality history.

  FIG. 3 is a flowchart showing the processing procedure of the present invention. When the user selects a channel for the portable TV terminal 1 and requests recording (step S1), the reception quality history management unit 6 reads the reception quality history from the storage device 7 and at the day of the week / time when recording is requested. The closest history is searched (step S3). The search priority is preferably set in the order of time and day of the week (date). For example, a typical user leaves home at 7 am from Monday to Friday, arrives at a company or school at 8 am, returns home after work or study until 20:00, spends time at home with family at 21:00, and On Saturdays, Sundays, take different actions from weekdays, and take different actions such as attending regular meetings on specific dates (end of month, beginning of month, etc.) Therefore, the present invention uses such a behavior pattern. In addition, there is a certain fixed pattern in the time for watching a television on a portable television terminal, for example, limited to the middle of commuting.

  In the reception quality prediction display, if the reception quality of the received reception quality information is a certain value or more, the reception quality is good, if it is less than a certain value, the reception quality is bad, or a quality display divided into three or more stages, Then, the reception quality converted into a numerical value is displayed as a reception quality prediction result together with the reception quality history (step S5). After confirming the reception quality prediction, the user makes a recording request or cancels the recording (step S7). By displaying the reception quality prediction and reception quality history in this way, if the reception quality is expected to be poor, the user can check the reception status at any time and place by comparing with the user's own behavior pattern from the reception quality history. Therefore, it is possible to prevent a situation where recording / viewing cannot be performed because broadcast waves cannot be received.

  FIG. 4 is a diagram showing an example of display on the portable television terminal 1 of the present invention. When the user attempts to record 20ch from 20:00 to 21:00 on November 3, 2004, the mobile TV terminal 1 is close to the same condition history or recording condition from the reception quality history (FIG. 4 (a)). The history is searched and displayed in order (FIG. 4 (b)). Since the reception quality history of this example has a history of the same condition, the total viewing time of the history information obtained by subtracting the viewing start time from the viewing end time is divided by the actual viewing time and expressed as a percentage. When the quality is calculated and the quality falls below a certain threshold value, a prediction display indicating that the recording is not normally performed even when recording is displayed in the prediction display area 20 (FIG. 4C). When this screen is displayed, the user decides whether or not to make a recording reservation, and when making a reservation, recalls the user's own behavior from the reception quality history and decides whether or not to move to a place with better reception sensitivity can do.

  On the other hand, FIG. 4D shows another display of the reception quality history. FIG. 4 (d) displays the reception quality detailed information at regular intervals from the start of viewing to the end of viewing as a timetable 22. Based on this information, it is predicted when the reception quality is likely to deteriorate, and the expected result. Is displayed in the prediction display area 20. In this timetable 22, it is preferable that the display format is easy for the user to easily confirm visually by color-coding according to the predicted quality in the time zone or changing the type of shading. The user can act to ensure recording by moving or staying in a place with good reception quality before reception quality deteriorates. As described above, the mobile TV terminal of the present invention is intended to be viewed by the user from the reception quality history from the viewing start time to the viewing end time on the same day or at the same time or when the program is viewed from the recording start time to the recording end time. A function of predicting and displaying the reception quality of the program to be played. According to this function, the future reception quality state can be estimated and displayed from the past reception quality history at the time of program viewing or recording, so that the user can be alerted.

  The portable TV terminal of the present invention has a function of acquiring current position information when viewing a program or recording a program, and searching for and presenting reception quality corresponding to position information in the vicinity of the acquired current position information from a reception quality history. . According to this function, the user can move to a place where reception is good at the time of viewing or recording, so that the viewing or recording can be performed normally. FIG. 5 is a diagram showing an example of predictive display using position information of the mobile TV terminal 1 of the present invention. The mobile TV terminal 1 with a location information acquisition function acquires and holds the reception quality history as well as the location information at the time of reception, so the level of reception quality (good, bad, etc.) is displayed by location. can do. The portable television terminal 1 searches the position information closest to the current position from the reception quality detailed information (FIG. 5B), and predicts how the user will move in the future from the searched position information. In FIG. 5, since the fourth position information is close to the current position, recording will start after several minutes from the detailed reception quality information (FIG. 5B), and whether the reception quality will deteriorate from the start to the end of recording. Judging. In this example, there is a history in which the reception quality deteriorates after 2 minutes from the start of recording, and therefore it is predicted that the quality will deteriorate 2 minutes later, and this is displayed as a quality prediction in the prediction display area 20 (FIG. 5). (d)). When the user selects the detail button 24 in the display of FIG. 5D, a location with good reception quality is obtained from the reception quality detailed information (FIG. 5B) having the reception quality associated with the position information and time. Is displayed as ○, and bad places are displayed as ×, and the map 26 plotted on the map is displayed (FIG. 5C). By looking at FIG. 5 (c), the user can immediately determine that the reception quality deteriorates from the middle when moving from the current position of the user toward the lower right on the map 26. You can avoid bad places (routes), stop viewing / recording, etc.

  Even in digital broadcasting, there is a difference in reception level depending on the reception channel, and the reception quality may be different for each channel accordingly. In the present invention, by storing such reception quality for each channel as a history (FIGS. 2, 4, and 5), it is possible to predict reception quality in consideration of channel dependence.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, functions included in each member, each means, each step, etc. can be rearranged so as not to be logically contradictory, and a plurality of means, steps, etc. can be combined or divided into one. Is possible. For example, in the embodiment, only the display device is described as the notification means for the prediction result, but the notification means is not limited to the display device, and can be realized by an audio output means such as a speaker.

It is a block diagram which shows the structural example of the portable television terminal of this invention. It is a figure which shows an example of the reception quality log | history of the portable television terminal by this invention. It is the figure which showed an example of the display of the portable television terminal 1 of this invention. It is the figure which showed an example of the display of the portable television terminal 1 of this invention. It is the figure which showed an example of the prediction display using the positional information on the portable television terminal 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile TV terminal 2 Tuning part 3 Tuner 4 Antenna 5 Timer 6 Reception quality history management part 7 Storage device 8 Viewing / recording quality prediction part 9 Display part 10 Voice part 20 Predictive display area 22 Timetable 24 Detailed button 26 Map 26

Claims (4)

In the broadcast receiving apparatus, storage means for storing the reception quality of the channel selected or recorded channel and the reception time information thereof as reception quality history;
A notification that receives a program viewing instruction, searches the reception quality history for a history having the same condition as the time and channel at which the instruction is received or a history close to the condition, and reports the predicted quality of the channel in the program viewing. Means,
A broadcast receiving apparatus comprising: In the broadcast receiving apparatus, storage means for storing the reception quality of the channel selected or recorded channel and the reception time information thereof as reception quality history;
In response to recording reservation instruction of a program, and search history near history or the condition of the reception from the quality history the reservation instruction receiving same and recording time and channel conditions, prediction of the channel in the recording time of the program An informing means for informing as quality,
A broadcast receiving apparatus comprising: In the reception quality prediction method of the broadcast receiving apparatus stores the received quality and received time information that channel selection or recorded channel as the reception quality history in response to an instruction program viewing, from the reception quality history being the stored A reception quality prediction method for a broadcast receiving apparatus, wherein a history of conditions that are the same as or similar to the conditions of the time and channel at which the instruction is received or a history close to the conditions is searched and reported as the predicted quality of the channel in the program viewing . In the reception quality prediction method of the broadcast receiving apparatus, the reception quality of the channel selected or recorded and the reception time information thereof are stored as the reception quality history, the program recording instruction is received, and from the stored reception quality history The reception quality of the broadcast receiving apparatus, wherein a history of the same condition as the time and channel at which the instruction is received or a history close to the condition is searched and reported as the predicted quality of the channel at the recording time of the program Prediction method.

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