JP2011142397A - Broadcast receiving device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the convenience of a viewer by switching display contents of a data broadcast in conjunction with a video field angle in the case of performing the segmented viewing of a wide field angle broadcast program. <P>SOLUTION: This broadcast receiving device has an information processing means for selecting different related information from a data broadcast content in accordance with video selected according to a user operation, a combining means for combining video data for displaying the selected video with display data for displaying the related information to output the combined data to a display device, and a control means for controlling the combining means so as to display the selected video and the related information in a predetermined display layout in accordance with the selected video. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a broadcast receiving apparatus and method capable of viewing video content at different angles of view.

  Currently, super high-definition broadcasting having a resolution exceeding that of high-definition (for example, 7680 × 4320 pixels) is being studied. A high-definition video distributed by Super Hi-Vision broadcasting can display a clear video even if a part of the video is enlarged and displayed.

  A new broadcasting service (wide viewing angle broadcasting service) in which a broadcasting station captures an image with a wider angle of view than the conventional shooting angle of view and distributes the image by super high-definition broadcasting is expected. The viewer can select and view a favorite angle of view from the entire angle of view of the distributed video.

  On the other hand, in digital broadcasting, program-related information such as characters and graphics linked to a program video can be displayed by data broadcasting. Japanese Patent Application Laid-Open Publication No. 2004-228561 describes that a broadcast program category is specified and the additional data of the broadcast program is displayed in a display form corresponding to the category.

JP 2005-151195 A

  In wide-angle broadcasting, it is preferable to display program-related information corresponding to the video of the angle of view selected by the viewer. However, conventionally, the contents of the data broadcast cannot be automatically switched according to the image of the angle of view selected by the viewer.

  The present invention controls so that the content of data broadcasting linked to a wide-angle broadcast program can be switched in conjunction with a viewer-selected angle of view video.

In order to solve the above problems, the present invention is a broadcast receiving apparatus that receives a digital broadcast and displays a program video related to a broadcast program and related information related to data broadcast content related to the broadcast program. ,
Video processing means for generating video data for displaying a program video related to a broadcast program;
Video selection means for selecting a specific video from the program video in response to a user operation;
Information processing means for selecting specific related information from the data broadcast content corresponding to the selected video,
Drawing means for generating display data for displaying the selected related information;
A combining unit that combines the video data for displaying the selected video and the display data for displaying the related information, and outputs the combined data to a display device;
Control means for controlling the synthesizing means so as to display the selected video and the related information in a predetermined display layout.

  According to the present invention, the content of the data broadcast is automatically switched in conjunction with the view angle video selected by the viewer. Since the optimal program related information is displayed for the viewer's favorite video object, a user-friendly viewing environment is provided.

It is a block diagram which shows the structure of the broadcast receiver which concerns on this invention. It is a flowchart which shows the flow of operation | movement of the broadcast receiver which concerns on this invention. It is explanatory drawing which shows the structure of the display control table which concerns on this invention. It is a schematic diagram which shows the display form of the data broadcast data which concerns on this invention. It is explanatory drawing for demonstrating the cutting-out of the image | video concerning this invention. It is explanatory drawing for demonstrating the hierarchical structure of the data broadcasting source which concerns on this invention.

Example 1
FIG. 1 is a block diagram of a broadcast receiving apparatus of the present invention. The receiving unit 101 selects a channel from the digital broadcast wave, demodulates the broadcast signal, and generates a transport stream (TS) from the demodulated signal. The demultiplexer 102 separates the TS into a video stream, an audio stream, a data broadcast stream, and control information. The video stream is sent to the video decoding unit 103, the control information is sent to the control unit 110, the data broadcast stream is sent to the data broadcast processing unit 120, and the audio stream is sent to the audio decoding unit 130.

  A video decoding unit 103 as video processing means decodes a video stream and outputs video data. The enlargement unit 104 enlarges the video data to a specified size. The control unit 110 acquires the enlargement magnification and the coordinate value of the area where the video is cut out and enlarged.

  The data broadcast processing unit 120 as information processing means analyzes markup language BML (Broadcast Markup Language) included in the data broadcast stream, and generates program-related information data to be displayed as a data broadcast. The drawing unit 121 generates bitmap data as display data for displaying the program related information from the program related information data.

  The audio decoding unit 130 decodes the audio stream and generates a plurality of audio data. The generated audio data is audio data related to a surround audio channel or a sub audio channel used for explanation. The audio switching unit 131 selects audio data designated by the control unit 110 from a plurality of audio data, and outputs the audio data to the speaker 132.

  The control unit 110 controls the enlargement unit 104, the data broadcast processing unit 120, the drawing unit 121, and the audio switching unit 131 in a coordinated manner. In addition, the control unit 110 analyzes the received control information and generates a display control table describing a display layout of the program video and related information.

  The synthesizing unit 105 synthesizes the video data output from the enlarging unit 104 and the bitmap data generated by the drawing unit 121 and outputs the combined data to the display 106. The display 106 displays an image based on the composite data on the screen of the display panel. The program video and related information are displayed in each display area in the display area of the screen with a predetermined display layout according to the display control table.

  Next, the operation of the broadcast receiving apparatus according to the present invention will be described with reference to FIG. When the viewer selects a wide-angle broadcast program using the remote controller, the display control process starts.

  The control unit 110 as the video selection unit determines whether or not switching of the angle of view to be displayed is instructed by a remote control operation (user operation) by the viewer (S1101). The control unit 110 generates an event when an instruction to change the display angle of view is given, and outputs the event to the data broadcast processing unit 120. The data broadcast processing unit 120 selects a process to be executed depending on the presence or absence of an event. That is, the extended BML is mounted so that the BML processing procedure is changed according to the event generated by the control unit 110. When the angle of view switching is instructed, a value for specifying the instructed angle of view is stored in the memory (S1102).

  The control unit 110 determines whether display of data broadcasting is instructed by a remote control operation by the viewer (S1201). If display of data broadcasting is instructed, the selected field angle value is read from the memory, and the selected field angle is determined from the field angle value (S1103). The display area corresponding to the selected angle of view is acquired with reference to the display control table (S1110, S1120).

  As shown in FIG. 3, the display control table describes parameters indicating video display area information, data broadcast display area information, and audio channel designation values in association with each angle of view.

  The contents described in the display control table are determined by the broadcasting station, and are transmitted as broadcast information accompanying the broadcast wave. For example, in digital terrestrial broadcasting, PSI (Program Specific Information) stored in the TS is expanded to incorporate accompanying information. The receiver generates a display control table by analyzing the PSI included in the received TS.

  The parameter “cutout area” in the display control table is the coordinates of an area to be cut out and enlarged from a received video stream. The “cutout area” is defined when the data broadcast is displayed together and when the data broadcast is not displayed. The “video display area” is coordinates indicating an area for displaying video on the screen of the display 106. The “video display area” is also defined for each of the case where the data broadcast is displayed together and the case where the data broadcast is not displayed.

  The “data broadcast area” is coordinates indicating an area for displaying a data broadcast video on the screen of the display 106. “BML” is a file name that designates a file that describes data broadcast content related to a data broadcast video to be displayed in the data broadcast area. “Audio channel” is a value that designates an audio channel to be reproduced.

  FIG. 5 shows a display layout of the video included in the received channel. In the entire video, two areas (view angle A and view angle B) for which cut-out viewing is recommended are defined. Each field of view angle A and view angle B is defined as a “cutout area” in the display control table.

  FIG. 4A shows the screen configuration when the angle of view A is selected. The video of the area indicated by the angle of view A in FIG. 5 is displayed in the video area, and the information described in BML (top_a.bml) is displayed in the data broadcast area. Similarly, FIG. 4B shows a screen configuration when the angle of view B is selected. 5 is displayed in the video area, and information described in BML (top_b.bml) is displayed in the data broadcast area. As described above, when the angle of view of the selected video is narrow, the clipped video is enlarged and displayed, so that the area of the display area may be small. Therefore, in this case, the layout ratio of the area of the display area of the related information to the area of the entire display area is larger than that in the case where the angle of view of the selected video is wide.

  FIG. 6 shows a hierarchical structure of data broadcast sources transmitted as a data broadcast stream. Each element is the name of the source file, and all the files listed here are broadcast in a data carousel format.

  The data broadcast source corresponding to the angle of view A is top_a. bml. top_a. bml, subtop_a1. bml and subtop_a2. The contents described in bml are referred to. Furthermore, subtop_a1. bml is sub_1. bml and sub_2. bml, subtop_a2. bml is sub_3. bml to sub_8. See up to bml. Of these, sub_4. bml, sub_7. bml, and sub_9. bml is information regarding the angle of view B. Since the field of view angle A includes the field of view angle B, the content of the data broadcast for the view angle A also includes information about the view angle B. The data broadcast source corresponding to the angle of view B is top_b. bml. top_b. bml is subtop_b1. bml and subtop_b1. bml is sub_4. bml, sub_7. bml, and sub_9. Refers to bml.

  In this way, the data broadcast source can be configured by a data file having a hierarchical structure, and the lowest layer file can be overlapped and included in a different highest layer. In accordance with the selected angle of view, the top layer file is selected from the display control table and executed. By configuring the data broadcast source as described above, even a single data broadcast source can be displayed as a data broadcast video adapted to the selected angle of view.

  In step 1110, the control unit 110 refers to the table and obtains a display area related to the angle of view A. Further, in step 1111, the control unit 110 acquires pointer information for designating a BML file to be displayed in the case of the angle of view A from the table. In step 1112, the control unit 110 acquires information for designating the audio channel to be reproduced when the angle of view A is displayed.

  Returning to FIG. 2, the control unit 110 instructs the enlargement unit 104 about a video clipping region (with data broadcast), an enlargement rate, and an enlarged video display position (S1113, S1123). The enlargement unit 104 cuts out a designated area from the video stream, performs an enlargement process, and arranges the program video at the designated coordinates in the display area on the screen of the display 106.

  The control unit 110 instructs the display area of the data broadcast content to the data broadcast processing unit 120 (S1114, S1124), and instructs the data broadcast processing unit 120 about the BML file to be referred to (S1115, S1125). The data broadcast processing unit 120 analyzes the designated BML file and generates data broadcast content according to the description of this file.

  The control unit 110 instructs the audio switching unit 131 that the channels to be reproduced are ch1 and ch2 (S1116, S1126). The audio switching unit 131 outputs ch1 and ch2 from the received plurality of audio channels. The speaker 132 reproduces the audio of the audio channels ch1 and ch2 specified in the table.

  Thereafter, the control unit 110 returns the process to step 1101, and the display control process is repeatedly executed.

  Even when the data broadcast display is not selected (S1201), the selected view angle of the program video is determined (S1202), and the same process is executed as the process without data broadcast for the selected view angle. .

  An operation example when viewing an opera program as a wide-angle broadcast program will be described. As a general viewing style of an opera program, two types of angles are provided: an angle of view overlooking the entire stage and an angle of view focusing on the singer. The viewer selects a preferred angle of view from an angle of view selection screen displayed when selecting a program. Further, when the viewer selects display of data broadcasting, the following related information is displayed. When the angle of view over the entire stage is selected, information about various elements (actors, authors, stories, etc.) that make up the opera being viewed is displayed, centering on general information about the opera itself. . On the other hand, when the viewer has selected an angle of view that pays attention to the singer, information about the singer (history, family, hobbies, etc.) is mainly displayed.

  In addition to wide-angle broadcast programs, the present invention can also be applied to multi-view programs that deliver a plurality of program videos using a subchannel for one broadcast program. When a multi-view program is selected, the video of the main channel is automatically displayed, but the viewer can select a sub-channel temporarily set in the program. In the sub-channel, video / audio different from the main channel is distributed. Further, when display of data broadcasting is instructed, program-related information having different contents is displayed for each channel. At this time, the display layout of the program video and the program related information in each channel is the same. That is, even for the same broadcast program, different program related information can be combined with the program video and displayed according to the selected channel.

DESCRIPTION OF SYMBOLS 100 Broadcast receiving apparatus 101 Receiving part 102 Demultiplexer 103 Video decoding part 104 Enlargement part 110 Control part 120 Data broadcast processing part 121 Drawing part

Claims (5)

A broadcast receiving apparatus that receives a digital broadcast and displays program video related to the broadcast program and related information related to the data broadcast content related to the broadcast program,
Video processing means for generating video data for displaying a program video related to a broadcast program;
Video selection means for selecting a specific video from the program video in response to a user operation;
Information processing means for selecting specific related information from the data broadcast content corresponding to the selected video,
Drawing means for generating display data for displaying the selected related information;
A combining unit that combines the video data for displaying the selected video and the display data for displaying the related information, and outputs the combined data to a display device;
A broadcast receiving apparatus comprising: control means for controlling the synthesizing means so as to display the selected video and the selected related information in a predetermined display layout. The specific video is a video obtained by cutting out a part of the angle of view of the program video,
The control means generates a table describing the display area information of the specific video and the display area information of the related information based on accompanying information transmitted by the digital broadcast,
The synthesizing unit refers to the table and synthesizes the video data and the display data based on display area information of the specific video and display area information of the selected related information. The broadcast receiving apparatus described.   When the angle of view of a specific image is narrow, the control means lays out a larger ratio of the area of the display area of the related information to the area of the entire display area than when the angle of view of the specific image is wide Item 3. A broadcast receiving device according to item 1 or 2.   The data broadcast source of the data broadcast content is composed of a plurality of data files having a hierarchical structure described in a markup language, and the lowest data of different highest data files includes duplicate data files. The broadcast receiving apparatus according to any one of claims 1 to 3. A broadcast receiving method for receiving a digital broadcast and displaying a program video related to the broadcast program and related information related to the data broadcast content related to the broadcast program,
Generating video data for displaying program video related to a broadcast program;
Selecting a specific video from the program video in response to a user operation;
Selecting specific relevant information from the data broadcast content corresponding to the selected video;
Generating display data for displaying the selected related information;
Combining the video data for displaying the selected video and the display data for displaying the related information, and outputting them to a display device;
A broadcast receiving method comprising: displaying the selected video and the related information in a predetermined display layout.

Images