JP3918946B2 - Digital broadcast receiver - Google Patents

Description

  The present invention relates to a digital broadcast receiver, and more particularly to a digital broadcast receiver that receives a broadcast signal including a BML (Broadcast Markup Language) file.

For example, Patent Document 1 discloses a digital broadcast receiver that receives a broadcast signal including a BML (Broadcast Markup Language) file. This digital broadcast receiver receives broadcast signals including TV broadcasts and data broadcasts, detects switching of data events, etc. based on DII (Download Info Indication) included in the broadcast signals, and forms the next screen The time required to receive data corresponding to one content is estimated. When the estimated time is shorter than the predetermined time, the display screen is blacked out. When the estimated time is longer than the predetermined time, the TV broadcast is displayed. According to this digital broadcast receiver, when the time until the next screen is displayed is long, the TV broadcast screen is displayed so that the user is not uncomfortable when the screen is switched.
JP 2002-44553 A (page 3-5, Fig. 1-2)

  By the way, in a digital broadcast receiver having a function of displaying a BML file with a browser, the browser is stopped when an error is detected during execution of the BML file due to a program error of the operator. This is because the operation cannot be guaranteed if the browser operation is continued in a situation where an error has occurred.

  However, when the browser is stopped due to an error, the key code input is also stopped, so that there is a problem that the user cannot even operate the remote controller and cannot execute a normal routine other than the routine in which the error has occurred.

  An object of the present invention is to allow a digital broadcast receiver that receives a broadcast signal including BML (Broadcast Markup Language) data to accept an input of a key code even when an error occurs during execution of a BML file. It is in.

A digital broadcast receiver according to a first aspect of the present invention is a digital broadcast receiver for receiving a broadcast signal including a BML (Broadcast Markup Language) file, a display processing means for displaying a BML file, and a routine included in the BML file. An error detection means for detecting an error when executing the error, a stop means for stopping the display process when the error is detected, a storage means for storing a routine in which the error is detected, and during the stop of the display process Control means for calling a key callback routine for executing a key event with the highest priority when a key code is input. Wherein, if the routine of BML file by entering the key code is specified, it is determined whether the specified routine is stored in the storage means, said specified routine stored in the storage means is If not will be, and controls the display processing unit to execute the specified routine, when said specified routine is stored in the storage means, the execution of the specified routine Is prohibited, and an alarm is output.

According to this receiver, even when an error is detected during execution of a specific routine of the BML file and the display process is stopped, the key callback routine can accept key code input. Thus, the user can input a key code using the remote control even when an error occurs during the BML file display process by the browser and the screen stops. Further, even when an error is detected during execution of a specific routine of the BML file and the display process is stopped, routines other than the routine in which the error has occurred can be displayed. That is, even if an error occurs in a specific routine and the screen is temporarily stopped, the user can see the display screen of the routine if the user instructs the execution of another routine without an error with the key code. In addition, if an error occurs during execution of a specific routine and the screen stops and then the execution of the routine is instructed again, execution of the routine is prohibited and an error occurs repeatedly in the routine that contains the error. You can avoid it. In addition, when an error occurs during execution of a specific routine and the screen is stopped, and execution of the routine is instructed again, the user is notified by an alarm that the routine cannot be specified. Thereby, it is possible to prevent the execution of the routine including the error from being repeatedly specified by the user.

A digital broadcast receiver according to a second invention is a digital broadcast receiver for receiving a broadcast signal including a BML (Broadcast Markup Language) file, a display processing means for displaying a BML file, and a routine included in the BML file. An error detection means for detecting an error when executing the error, a stop means for stopping the display process when the error is detected, a storage means for storing a routine in which the error is detected, and during the stop of the display process Control means for invoking a key callback routine for executing a key event with the highest priority when a key code is input, and the control means is designated a BML file routine by the key code input. If the specified routine is stored in the storage means, it is determined whether the specified routine is If not stored in the serial storage means, and controls said display processing means to execute the specified routine.

According to this receiver, even when an error is detected during execution of a specific routine of the BML file and the display process is stopped, the key callback routine can accept key code input. Thus, the user can input a key code using the remote control even when an error occurs during the BML file display process by the browser and the screen stops. It also gives errors during the execution of certain routines in the BML file.
Even when the display process is stopped after detection, a routine other than the routine in which the error has occurred can be displayed. That is, even if an error occurs in a specific routine and the screen is temporarily stopped, the user can see the display screen of the routine if the user instructs the execution of another routine without an error with the key code.

The digital broadcast receiver according to a third aspect of the present invention is the digital broadcast receiver according to the second aspect of the present invention , wherein when the BML file routine is designated by the input of the key code, the control means designates the designated routine as the storage means. It determines whether it is stored in, when the specified routine is stored in the storage means, and inhibits the execution of the specified routine.

  In this receiver, if an error occurs during the execution of a specific routine and the screen stops and then the execution of the routine is instructed again, the execution of the routine is prohibited and repeated in the routine containing the error. An error can be prevented.

A digital broadcast receiver according to a fourth aspect of the present invention is the digital broadcast receiver according to the second or third aspect of the present invention , wherein when the BML file routine is designated by the input of the key code, the control means designates the designated routine. There it is determined whether or not stored in the storage means, when the specified routine is stored in the storage means, and outputs an alarm.

  In this receiver, when an error occurs during the execution of a specific routine and the screen is stopped, when the execution of the routine is instructed again, the user is notified by an alarm that the routine cannot be specified. Thereby, it is possible to prevent the execution of the routine including the error from being repeatedly specified by the user.

  According to the present invention, in a digital broadcast receiver that receives a broadcast signal including BML (Broadcast Markup Language) data, an input of a key code can be accepted even when an error occurs during execution of a BML file.

(1) Configuration FIG. 1 is a block diagram showing a schematic configuration diagram of a digital broadcast receiver 1 according to an embodiment of the present invention.

  The digital broadcast receiver 1 includes a receiving unit 2, a data decoder 3, a memory 4, an AV decoder 5, a browser 6, and a control unit 7.

  The receiving unit 2 receives digital TV broadcasts and data broadcasts. The data decoder 3 extracts and decodes data from the broadcast received by the receiving unit 2, and outputs a BML file to the memory 4. The memory 4 stores the BML file from the data decoder 3. The AV decoder 5 extracts and decodes AV data from the TV broadcast received by the receiving unit 2 and outputs the AV data to the display unit 8. The browser 6 reads the BML file in the memory 4, configures one screen with the BML file, and outputs it to the display unit 8. The control unit 7 controls the receiving unit 2, the data decoder 3, the memory 4, the AV decoder 5, and the browser 6.

  FIG. 2 is a schematic diagram for explaining the contents of the BML file. As shown in FIG. 2, the BML file 20 includes routine calls, routines, and key callback routines. For example, <routine A> is called by the call 21 of the routine A, and <routine B> is called by the call 22 of the routine B. The <key callback routine> is a routine for executing key events with the highest priority. The control unit 7 monitors <key callback routine> during execution of the BML file 20.

FIG. 3 is a screen example of display processing of the BML file 20. For example, consider a case where the screen 300 a is displayed on the display unit 8 by displaying the BML file 20. The screen 300a displays “button A” assigned to call <routine A> and “button B” assigned to call <routine B>. The screen 300b is a screen by <routine A> assigned to “button A”. The screen 300c is a screen by <routine B> assigned to the “button B”. When the control unit 7 receives the key code designating “button A”, the control unit 7 instructs the browser 6 to execute <routine A> designated by “button A”, and <routine A> is executed by the browser 6. Then, screen A is displayed. When the control unit 7 receives the key code designating the “button B”, the control unit 7 instructs the browser 6 to execute the <routine B> designated by the “button B”. Is executed and the screen B is displayed. Here, if an error such as a program mistake is included in <routine A> and an error occurs while executing routine A by the browser 6, the control unit 7 detects the error and stops the display process. The browser 6 stops the screen of the display unit 8 in the state of the screen 300b. Further, the control unit 7 stores the routine in which the error has occurred (<routine A>) in the memory 4 as an error routine.

  When the control unit 7 receives the key code input in a state where the display process of the browser 6 is stopped due to an error during execution of the <routine A>, the control unit 7 calls the <key callback routine> While making the input receivable, the processing of <routine A> is stopped and the screen of the display unit 8 is returned to the screen 300a before the occurrence of the error.

  When the key code is input, the control unit 7 identifies the routine specified by the key code, and compares the specified routine with the error routine stored in the memory 4. When the designated routine matches the error routine, the control unit 7 prohibits execution of the routine and displays an alarm. The alarm is “This button cannot be specified. Please specify another button” or the like. On the other hand, when the designated routine does not match the error routine, the control unit 7 instructs the browser 6 to execute the routine. In the example of FIG. 3, when the key code input is “button A”, <routine A> is designated and <routine A> is stored in the memory 4. Prohibit execution and display an alarm. On the other hand, when the input of the key code is “button B”, since <routine B> is not stored in the memory 4, <routine B> is executed and screen B is displayed.

(2) Flowchart FIG. 4 is a flowchart of the BML file display process in the digital broadcast receiver 1.

  When an error is detected during display of the BML file by the browser 6, that is, when an error is detected during execution of <routine A> in the example of FIG. 3 (Y in S11), the control unit 7 generates an error. <Routine A> is stored in the memory 4 as an error routine (S12), and the browser 6 is instructed to stop the display process (S13).

  When the control unit 7 receives an input of a key code while the browser 6 is stopped, a <key callback routine> is activated (S15). Further, the control unit 7 instructs the browser 6 to return the display screen to the state before the error (screen 300a in FIG. 3).

  Thereafter, when receiving the input of the key code, the control unit 7 specifies a routine designated by the key code, and compares the designated routine with the error routine (memory 4) (S16). In the example of FIG. 3, it is specified whether (<routine A> “button A”) is specified by the key code or <routine B> (button B) is specified, and the specified routine is an error routine ( <Routine A>) is compared.

  When the designated routine is an error routine as a result of the comparison in S <b> 16, the control section 7 prohibits execution of the designated routine and outputs an alarm to the display section 8. On the other hand, if the result of the comparison in S16 is that the designated routine is not an error routine, the control unit 7 instructs the browser 6 to execute the designated routine (S18).

(3) Effects According to this embodiment, even when an error is detected during execution of a specific routine of the BML file and display processing is stopped, key code input can be accepted by the key callback routine. . As a result, the user can input a key code using the remote control even when an error occurs during the BML file display process by the browser 6 and the screen stops.

Further, even when an error is detected during execution of a specific routine of the BML file and the display process is stopped, routines other than the routine in which the error has occurred can be displayed. That is, even if an error occurs in a specific routine and the screen is temporarily stopped, the user can see the display screen of the routine if the user instructs the execution of another routine without an error with the key code.

  In addition, if an error occurs during execution of a specific routine and the screen stops and then the execution of the routine is instructed again, execution of the routine is prohibited and an error occurs repeatedly in the routine that contains the error. You can avoid it.

  In addition, when an error occurs during execution of a specific routine and the screen is stopped, and execution of the routine is instructed again, the user is notified by an alarm that the routine cannot be specified. Thereby, it is possible to prevent the execution of the routine including the error from being repeatedly specified by the user.

1 is a block diagram illustrating a schematic configuration diagram of a digital broadcast receiver 1. FIG. The schematic diagram for demonstrating the content of a BML file. The example of a display screen of a BML file. The flowchart of the display process of a BML file.

Explanation of symbols

1 Digital Broadcasting Receiver 2 Receiving Unit 3 Data Decoder 4 Memory 5 AV Decoder 6 Browser 7 Control Unit 8 Display Unit

Claims (4)

A digital broadcast receiver that receives broadcast signals including BML (Broadcast Markup Language) files,
Display processing means for displaying a BML file;
Error detection means for detecting an error when executing a routine included in the BML file;
Stop means for stopping the display process when the error is detected;
Storage means for storing a routine in which the error is detected;
Control means for calling a key callback routine for executing a key event with the highest priority when a key code is input while the display process is stopped,
The control means includes
When the routine of the BML file is designated by the input of the key code, it is determined whether or not the designated routine is stored in the storage means, and when the designated routine is not stored in the storage means Controls the display processing means to execute the designated routine, and when the designated routine is stored in the storage means, prohibits the execution of the designated routine; A digital broadcast receiver characterized by outputting an alarm. A digital broadcast receiver that receives broadcast signals including BML (Broadcast Markup Language) files,
Display processing means for displaying a BML file;
Error detection means for detecting an error when executing a routine included in the BML file;
Stop means for stopping the display process when the error is detected;
Storage means for storing a routine in which the error is detected;
Control means for calling a key callback routine for executing a key event with the highest priority when a key code is input while the display process is stopped,
The control means includes
When the routine of the BML file is designated by the input of the key code, it is determined whether or not the designated routine is stored in the storage means, and when the designated routine is not stored in the storage means The digital broadcast receiver controls the display processing means to execute the designated routine.   When the BML file routine is designated by the input of the key code, the control means determines whether or not the designated routine is stored in the storage means, and the designated routine is stored in the storage means. The digital broadcast receiver according to claim 2, wherein execution of the designated routine is prohibited if it is.   When the BML file routine is designated by the key code input, the control means determines whether or not the designated routine is stored in the storage means, and the designated routine is stored in the storage means. The digital broadcast receiver according to claim 2 or 3, wherein an alarm is output if the alarm is received.

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