JP2009088819A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver capable of displaying again the screen immediately before closing without returning to the initial screen, when the screen for a data broadcast programming should be displayed again after the screen for the data broadcast programming is closed and the screen indicated by a display system application such as a program guide is displayed, and shortening a screen switch time duration from screen display by the display system application to screen display for the data broadcast programming. <P>SOLUTION: For example, when a program guide button is pushed in a status in which a data broadcast programming is received and displayed, the screen is switched to display a program guide, and control for data broadcast is not performed. When the program guide button is pushed again, display of the program guide is switched to display of the data broadcast programming. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving apparatus having a data broadcast receiving function.

  In various types of digital broadcasting such as BS (Broadcast Satellite) / CS (Communication Satellite) digital broadcasting and terrestrial digital broadcasting, in addition to normal TV programs using video and audio signals, video and audio data, still image data, text data, and A data broadcast program composed of component data including control data (for example, BML (Broadcast Markup Language) document) for controlling the temporal and spatial arrangement of each data is also broadcast. Data broadcasting programs are broadcast only as component data without accompanying TV programs and linked data broadcasting programs that are broadcast as a single program with the data broadcasting program attached to the normal TV program using video and audio signals. There are independent data broadcasting programs.

  These data broadcast programs can provide interactive services to users by using the control data described above. Based on the contents of the displayed screen, the user can refer to desired information by changing the screen by operating a remote controller or the like.

However, the data broadcasting program still has problems such as requiring many key operations before the user refers to desired information, and switching the display screen.
Therefore, for example, Patent Document 1 proposes a digital broadcast receiving apparatus that is improved in key operation so that information frequently used by a user can be easily referred to.

  In addition, general digital broadcast receivers have many functions in addition to various program reception functions, and are equipped with applications that are software for each function to realize these many functions. is doing.

  For example, the program guide application is an application that realizes a program guide display function for displaying a program guide to the user based on program information data acquired from the outside and stored in the apparatus. The menu display application is an application for presenting various setting states of the own device to the user or for changing the setting by the user.

  As described above, an application for displaying additional information, which is information related to digital broadcasting or information indicating the state of the own device, or a screen for setting various setting values to the user is described in this book. In the embodiment, it is called a display system application.

In the conventional digital broadcast receiving apparatus, when the display application is executed and various additional information is displayed as video information on the display apparatus, a data broadcast program is displayed immediately before the display is performed. In order to prevent the execution of the data broadcasting display software from competing with the execution of the display system application, the process of starting the execution of the display system application is performed after the execution of the data broadcasting display software is completed.
JP 2006-180132 A

However, in the conventional example of Patent Document 1, although the key operation is improved, the problem that it takes time to switch the display screen is not improved.
In addition, as described above, when displaying information by a display application while displaying a data broadcast program, the execution of the display application is executed after the execution of the data broadcast display software is finished. ing.

  Therefore, for example, when the user wants to confirm the broadcast schedule of a program while viewing the data broadcast program and displays a program guide, the data broadcast display software ends execution at that time. Therefore, even if the user wants to stop displaying the program guide and return to viewing the data broadcast program again, the screen does not return to the data broadcast program display, and the screen is displayed just before the data broadcast program display. There is a problem of becoming a video of.

FIG. 2 is a screen transition diagram illustrating this problem.
When the “d” button, which is a button for displaying a data broadcast program, is pressed while viewing a normal program, the data broadcast display software is activated and the initial screen (b) of the data broadcast program is displayed. When the user selects a news frame on the initial screen, a news screen (c) is displayed. In this example, the basic television screen is reduced and displayed on the upper right. From this state, the user wants to temporarily check the program guide, and presses the “program guide” button, which is a button for executing display and deletion of the program guide with a toggle, to display the program guide (d), and the data broadcasting screen If the user wants to watch the news of the data broadcast program again and presses the “program guide” button again to delete the program guide, the screen displayed thereafter is the news screen (c). The video (e) of the normal program that was displayed immediately before the data broadcast program display is displayed. Therefore, in order to display the data broadcast program again, the “d” button must be pressed again. Further, the screen displayed at this time is not the news screen, but returns to the initial screen (f) of the data broadcast program.

  The present invention solves the above problems, closes the data broadcast program screen, displays the information display screen by the display application, and then displays the data broadcast program screen again. The digital broadcast receiver can redisplay the screen as it was when it was closed without returning to the screen, and can shorten the screen switching time when redisplaying the screen of this data broadcast program. The purpose is to provide.

Therefore, in order to solve the above problems, the present invention provides the following apparatus.
(1) first video signal generating means (6, 7) for generating a first video signal for causing the display device to display additional information including at least information related to digital broadcasting as video;
Second video signal generation means (2, 3, 8, 9, 10) for receiving a data broadcast program and generating a second video signal for displaying the received video of the data broadcast program on the display device. )When,
When the video by the second video signal is displayed on the display device and the first video signal is not generated, the display start and end of the video by the first video signal is operated. When the operation information is input, the first video signal generation unit is controlled to start generating the first video signal, and the first video signal generation unit generates the first video signal generation unit. The video by the first video signal is switched to the video by the second video signal that is currently displayed and displayed on the display device, and the second video signal generating means is controlled thereafter. While not doing
When the second video signal is generated, but the resulting video is not displayed on the display device, and the video based on the first video signal is displayed on the display device, When the operation information is input, the first video signal control means is controlled so as to end the generation of the first video signal, and the generated video based on the second video signal is A control means (4, 5, 18) for controlling the display device to display the first video signal that is currently displayed and to display on the display device;
A digital broadcast receiver characterized by comprising:

  According to the present invention, when the data broadcast program screen is closed and the information display screen by the display system application is displayed and then the data broadcast program screen is displayed again, the screen is closed without returning to the initial screen. It is possible to redisplay the screen without changing the screen.

Furthermore, the screen switching time when redisplaying the screen of the data broadcast program can be shortened.
Therefore, user convenience can be improved.

An embodiment of a digital broadcast receiving apparatus according to the present invention will be described below.
<Overall configuration>
FIG. 1 is a block diagram of an embodiment of a digital broadcast receiving apparatus of the present invention.

The operation input unit 4 receives a user operation, generates operation information corresponding to the operation, and supplies the operation information to the system control unit 5.
The system control unit 5 receives the operation information supplied from the operation input unit 4, generates a control signal necessary for executing an operation corresponding to the operation information, and supplies the control signal to each block in the apparatus. Performs overall control of the entire device. In FIG. 1, for simplification of the drawing, lines of control signals supplied to individual blocks other than the application processing unit 6, the data broadcast engine unit 9, the first changeover switch 18, and the second changeover switch 19 are shown. Is omitted.

  Further, the system control unit 5 performs switch ON / OFF control for the first changeover switch 18 and the second changeover switch 19 according to the execution status of the data broadcast display software and the display system application. Details of this switching control will be described later.

  The application processing unit 6 executes a display system application associated in advance with a control signal supplied from the system control unit 5. Then, if necessary, the display position information and size information of the video of the TV program are generated according to the operation content of the executed display system application, and the video scaler unit 12 is connected via the second changeover switch 19. In addition to the supply, the application screen generation unit 7 is supplied with character data and graphic data used for display of the display system application.

  The application screen generation unit 7 generates an application display video signal (first video signal in the claims) based on supplied character data, graphic data, and the like, via the first changeover switch 18. This is supplied to the video composition unit 13.

  The tuner unit 2 tunes and demodulates a digital broadcast wave including a channel to be selected among digital broadcast waves coming from the digital broadcast antenna 1 to generate an encoded video signal for TV program and encoding. A transport stream in which the audio signal and various data for data broadcasting and program information provision are multiplexed is generated and supplied to the demultiplexing unit 3.

  The demultiplexing unit 3 separates the encoded video signal, the encoded audio signal, and various data from the transport stream, and supplies them to the video decoding unit 11, the audio decoding unit 14, and the data broadcast data acquisition unit 8, respectively.

The data broadcast data acquisition unit 8 extracts component data used in the data broadcast from various types of supplied data and supplies the component data to the data broadcast engine unit 9.
The data broadcast engine unit 9 analyzes the operation content of the data broadcast program based on the component data supplied from the data broadcast data acquisition unit 8 and the control signal supplied from the system control unit 5, and displays the video of the TV program. Display position information and size information are supplied to the video scaler unit 12 through the second changeover switch 19, and the data broadcast screen generation unit 10 is supplied with character data used for displaying a data broadcast program. Supply graphic data.

  The data broadcast screen generation unit 10 generates a video signal for data broadcast program display (second video signal in the claims) based on the supplied character data, graphic data, and the like, and the first changeover switch 18. To the video composition unit 13.

The video decoding unit 11 decodes the supplied encoded video signal to generate a television program display video signal, and supplies it to the video scaler unit 12.
The video scaler unit 12 displays the television program supplied from the video decoding unit 11 based on the display position information and the size information supplied from the data broadcast engine unit 9 or the application processing unit 6 via the second changeover switch 19. The display position and size of the video signal for adjustment are adjusted, and the adjusted video signal for television program display is supplied to the video composition unit 13.

  The video synthesizing unit 13 includes a television program display video signal supplied from the video scaler unit 12 and a data broadcast program supplied from the data broadcast screen generation unit 10 or the application screen generation unit 7 via the first changeover switch 18. The composite video signal is generated by combining the display video signal or the application display video signal and output to the display unit 16.

The audio decoding unit 14 generates an output audio signal by decoding the supplied encoded audio signal, and supplies the output audio signal to the audio signal processing unit 15.
The audio signal processing unit 15 performs processing such as level adjustment on the supplied output audio signal and then outputs the processed signal to the speaker 17.
<Operation flow>
Next, details of the operation of this embodiment will be described with reference to the block diagram of FIG. 1 and the flowchart of FIG. Note that the subject performing the operations in the flowchart is the system control unit 5 unless otherwise specified.

Further, it is assumed that the data broadcast program has already been received and the video screen of the data broadcast program has already been displayed on the display unit 16 before entering this processing operation.
Step S1: It is detected whether or not the operation information input from the operation input unit 4 by the user's operation is “pressing the program guide button”. If the detection result is not “pressing the program guide button”, the process returns to the operation information detection process again. If the detection result is “pressing the program guide button”, the process proceeds to step S2.

  Step S2: It is checked whether the program guide display video signal by the program guide application is currently supplied to the video composition unit 13 and the program guide is being displayed on the display unit 16. If the program guide is being displayed, the process proceeds to step S7. If the program guide is not being displayed, the process proceeds to step S3.

  Step S3: Even if the operation information input from the operation input unit 4 after this step is related to data broadcasting, the control signal corresponding to this operation information is not supplied to the data broadcasting engine unit 9. Restrict.

  Step S4: The first changeover switch 18 is set so that the video signal for application display (in this case, the program guide) is supplied to the video composition unit 13 and the display on the display device 16 becomes the screen of the program guide application. To the b terminal side (application side).

  Step S5: When displaying the program guide supplied from the application processing unit 6, the display position information and size information (video scaling information) of the TV program video displayed in a predetermined area in the program guide are sent to the video scaler unit 12. The second changeover switch 19 is switched to the b terminal side (application side) so as to be supplied.

Step S6: Display of the program guide is started.
Note that the processing from step S3 to step S6 is not necessarily performed in this order, and may be performed in any order.

When the processes from step S3 to step S6 are completed, the process returns to step S1 again and waits for the next operation information to be input.
Step S7: If it is detected in step S1 and step S2 that the “program guide button has been pressed” again when the program guide is already being displayed, the control signal supply restriction to the data broadcasting engine unit is released. To do.

  Step S8: The data switch display video signal is supplied to the video composition unit 13, and the first changeover switch 18 is set to the a terminal side (data broadcast) so that the display on the display device 16 becomes a data broadcast screen. Side).

  Step S9: When the data broadcast program supplied from the data broadcast engine unit 9 is displayed, the display position information and size information (video scaling information) of the TV program video displayed in a predetermined area in the data broadcast program are the video scaler. The second changeover switch 19 is switched to the a terminal side (data broadcasting side) so as to be supplied to the unit 12.

Step S10: The display of the program guide is terminated.
Note that the processing from step S7 to step S10 is not necessarily performed in this order, and any order may be used.

When the processes from step S7 to step S9 are completed, the process returns to step S1 again and waits for the next operation information to be input.
Conventionally, after the data broadcast program is received and displayed, when the “program guide button is pressed”, when the display of the program guide is started, the execution of the data broadcast display software is terminated, and the data broadcast program is displayed. The reception itself has been terminated.

  Therefore, when the display of the program guide is terminated by the next “pressing of the program guide button”, the data broadcast display software is started from the beginning, so the reception of the data broadcast program must be started again from the beginning. In addition to taking time to display, the display screen has returned to the initial screen.

  In this embodiment, even if the display of the program guide is started, the execution of the data broadcasting display software is not terminated, and the operation information is input, the video scaling control is performed, and the display control is not terminated without receiving the data broadcasting program. Was kept in the state that was switched to the display application side. Furthermore, the control signal is not supplied to the data broadcast engine unit 9 during the program guide display period.

  As a result, it is possible to quickly switch from the program guide display by the display application to the data broadcast program display, and the display screen of the data broadcast program to be redisplayed is the screen that was previously displayed instead of the initial screen. Is possible.

  A transition example of the data broadcast screen according to the present embodiment is shown in FIG. The transition from FIG. 4A to FIG. 4D is the same as the conventional example of FIG. 2, but the display screen in FIG. 4E is not the initial screen as in FIG. It becomes FIG.4 (e) which is the same display screen as FIG.4 (c) which is a display screen of the data broadcasting program currently displayed before FIG.4 (d) which is a screen.

  In this embodiment, as an example of the switching process between the screen display by the data broadcast program and the screen display by the display system application, the “program table button press” in the program table has been described. However, the present invention is not limited to this. When the start / end of the display application is assigned to another button or operation, it goes without saying that “pressing the program guide button” is replaced with another button or operation.

  Further, the present invention includes a program for causing a computer to realize the functions of the above-described apparatus. These programs may be read from a recording medium and loaded into a computer, or may be transmitted via a communication network and loaded into a computer.

It is a block diagram of one Example of the digital broadcast receiver of this invention. It is the figure which showed the example of the screen transition of the conventional data broadcast program. It is a flowchart which shows the flow of operation | movement of one Example. It is the figure which showed the example of the screen transition of the data broadcasting program of one Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital broadcasting antenna 2 Tuner part 3 Demultiplexing part 4 Operation input part 5 System control part 6 Application processing part 7 Application screen generation part 8 Data broadcast data acquisition part 9 Data broadcast engine part 10 Data broadcast screen generation part 11 Video decoding part 12 video scaler unit 13 video synthesis unit 14 audio decoding unit 15 audio signal processing unit 16 display device 17 speaker 18 first changeover switch 19 second changeover switch

Claims (1)

First video signal generating means for generating a first video signal for causing the display device to display additional information including at least information related to digital broadcasting as a video;
Second video signal generating means for receiving a data broadcast program and generating a second video signal for displaying the video of the received data broadcast program on the display device;
When the video by the second video signal is displayed on the display device and the first video signal is not generated, the display start and end of the video by the first video signal is operated. When the operation information is input, the first video signal generation unit is controlled to start generating the first video signal, and the first video signal generation unit generates the first video signal generation unit. The video by the first video signal is switched to the video by the second video signal that is currently displayed and displayed on the display device, and the second video signal generating means is controlled thereafter. While not doing
When the second video signal is generated, but the resulting video is not displayed on the display device, and the video based on the first video signal is displayed on the display device, When the operation information is input, the first video signal control means is controlled so as to end the generation of the first video signal, and the generated video based on the second video signal is A control means for controlling the display device to display the first video signal that is currently displayed and to switch the video to the display device;
A digital broadcast receiver characterized by comprising:

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