JP2016184826A - Reception device, reception method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly display character data.SOLUTION: A reception device comprises: a receiving section for receiving reception data by broadcast waves; an acquisition section which acquires, from the reception data, display elements including character data, and arrangement information indicating the presentation area of the display elements; and a display control section which, on the basis of the arrangement information, determines whether the display elements can be all displayed in the presentation area and in a case where the display elements cannot be all displayed in the presentation area, changes the display mode of the display elements.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a receiving device, a receiving method, and a program.

  In television broadcasting, components (components, element information) such as a plurality of video data and character data may be multiplexed at the same time due to broadcast waves, not limited to one video data. Conventionally, each component is displayed in a display position of a display area that is predetermined by a receiving apparatus, and a broadcaster or a program producer (hereinafter referred to as a broadcaster or the like) determines a display position of the display area in advance. It was.

  For example, the technique described in Patent Document 1 always monitors whether or not a character super is included in a received signal obtained by receiving a digital broadcast, and if it is detected that a character super is included, Based on the character super analysis unit that generates the character super information including the detailed information of the character super, the external video input unit that inputs the external video from the outside, the detailed information of the text super and the data of the external video, A video layout unit for determining a display size and a display position of each of the text super presentation image and the external video so that the text super presentation image generated using the text super information and the external video do not overlap with each other; And a graphics creation unit that creates a character super presentation image of the display size determined by the video layout unit. Comprising an image combining unit for combining the subtitle presentation image and the external image, and displays the synthesized image.

  In addition, for example, the technique described in Patent Document 2 generates video data indicating a video obtained by reducing the video indicated by the video information based on video size information specifying the size of the video display area, and the caption processing unit Subtitle data is generated based on subtitle size information that specifies the size of the display area and character size information that indicates the size of characters displayed in the subtitle display area, and the screen composition unit determines the display position of the video display area. The video data and the subtitle data are synthesized according to the video position information shown and the subtitle position information showing the display position of the subtitle display area, and the synthesized data is output to the display device.

JP 2012-120212 A Japanese Unexamined Patent Publication No. 2011-182008

  However, even when the techniques described in Patent Documents 1 and 2 are used, for example, when character data as an example of a component includes subtitle data and character super data, or when subtitles are spread over a plurality of lines. Character data may not be displayed properly in the display area of the device. For example, when the display area where subtitles can be displayed is limited, when the subtitle data of a plurality of lines exceeds the display area, the receiving device can display only the last line of the received subtitle data, and the user can There was a case that the whole could not be confirmed. Thus, there has been a problem that character data cannot be displayed properly in the character data display area.

  SUMMARY An advantage of some aspects of the invention is that it provides a receiving apparatus, a receiving method, and a program capable of appropriately displaying character data.

  One aspect of the present invention has been made in view of the above-described circumstances, and a receiving device includes: a receiving unit that receives received data by broadcast waves; a display element that includes character data from the received data; and the display element Based on the arrangement information, an acquisition unit that acquires arrangement information indicating a presentation area, determines whether or not all the display elements can be displayed in the presentation area, and the display elements are not all displayable in the presentation area A display control unit that changes a display mode of the display element.

  One embodiment of the present invention is the above-described receiving device, wherein the display control unit is configured to display the display elements that are not displayable in the presentation area when all the display elements are not displayable in the presentation area. The display mode of is changed.

  One embodiment of the present invention is the receiving device according to any one of the above, wherein the display control unit is not displayable in the presentation area when all the display elements are not displayable in the presentation area. The display area of the display element is changed.

  One embodiment of the present invention is the receiving device according to any one of the above, further including a transmission unit, wherein the display control unit is configured to display the display element in a case where all the display elements are not displayable. The display element that is not displayable in the presentation area is transmitted.

  One embodiment of the present invention is a reception method, comprising: a reception step of receiving reception data by broadcast waves; a display element including character data from the reception data; and arrangement information indicating a display area of the display element. Based on the obtaining step to obtain and the arrangement information, it is determined whether or not all the display elements can be displayed in the presentation area, and when all the display elements are not displayable in the presentation area, And a display control step for changing the display mode.

  Another embodiment of the present invention is a program, which is a program that includes a reception step of receiving reception data by broadcast waves, a display element including character data from the reception data, and an arrangement indicating a display area of the display element Based on the acquisition step of acquiring information and the arrangement information, it is determined whether or not all of the display elements can be displayed in the presentation area, and when all of the display elements are not displayable in the presentation area, the display A display control step for changing the display mode of the element.

  According to the present invention, character data can be appropriately displayed.

The conceptual diagram which shows an example of a structure of the broadcast system by embodiment of this invention. It is a block diagram which shows an example of a structure of the transmitter by this embodiment. It is a block diagram which shows an example of a structure of the receiver by this embodiment. It is a block diagram which shows an example of a structure of the control part in the receiver by this embodiment. It is a flowchart which shows an example of the reception process by this embodiment. It is explanatory drawing which shows an example of the example of a display in the display part of the receiver by this embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram illustrating an example of a configuration of a broadcasting system 1 according to the present embodiment. The broadcast system 1 includes a transmission device 10, a reception device 30, and an electronic device 40. The transmission device 10 is constituted by, for example, broadcasting equipment possessed by a broadcasting company or the like. The receiving device 30 receives broadcast data such as a broadcast program broadcast (transmitted) from the transmission device 10, displays a video of the broadcast program included in the received broadcast data, and reproduces the sound of the broadcast program. A broadcast program may be multiplexed with character data. In that case, the receiving apparatus 30 displays the characters indicated by the multiplexed character data in a superimposed manner on the video. The receiving device 30 is, for example, a television receiving device installed in each home or business office.

  The transmission device 10 transmits multiplexed data obtained by multiplexing program data representing the content of the broadcast program and character data to the reception device 30 via the broadcast transmission path 12 including, for example, the broadcast satellite 13. The program data includes, for example, audio data and video data. Character data is data including character information. The character information is information representing characters provided by character multiplex broadcasting, and is also called timed text. Character multiplex broadcasting includes subtitle broadcasting and character supervision. Subtitle broadcasting is broadcasting synchronized with a main program including video and audio. A character supermarket is a broadcast that is not synchronized with the main program, and is also called asynchronous subtitles.

  The broadcast transmission path 12 is a transmission path for unidirectionally transmitting various data transmitted by the transmission apparatus 10 to an unspecified number of reception apparatuses 30 simultaneously. The broadcast transmission path 12 is, for example, a radio wave (broadcast wave) in a predetermined frequency band that is relayed by the broadcast satellite 13. A part of the broadcast transmission path 12 may include a communication line, for example, a communication line or a communication path from the transmission device 10 to a transmission facility for transmitting radio waves.

The receiving device 30 receives broadcast waves from the transmitting device 10 via the broadcast transmission path 12. The receiving device 30 acquires program data and character data from multiplexed data (broadcast data) transmitted by broadcast waves. The receiving device 30 acquires video data and audio data from the program data. The receiving device 30 displays the video indicated by the acquired video data and the characters indicated by the character data, and reproduces the audio indicated by the acquired audio data. The receiving device 30 is an electronic device having a function capable of receiving broadcast waves of television broadcasting, such as a television receiving device, a video recording device, and a smartphone. Here, an electronic device 40 connected to the receiving device 30 to be described later and an electronic device that is an example of the receiving device 30 may be referred to as a first electronic device in order to distinguish them in the following description. The electronic device 40 connected to the receiving device 30 may also be referred to as a second electronic device.
In the following description, information represented by data (for example, video data, character data, etc.) transmitted mainly for display on the receiving device 30 is collectively referred to as “display element”.

  The electronic device 40 is an electronic device that is wired or wirelessly connected to the receiving device 30. For example, the electronic device 40 is preferentially connected to the receiving device 30 and functions as an auxiliary display device of the receiving device 30. The electronic device 40 is an electronic device including a display unit that can display an image, such as a smartphone, a tablet PC, a notebook PC, or a display device.

Next, the configuration of the transmission device 10 according to the present embodiment will be described.
FIG. 2 is a block diagram illustrating a configuration of the transmission apparatus 10 according to the present embodiment. The transmission device 10 includes a program data acquisition unit 111, a character data acquisition unit 112, a configuration information acquisition unit 113, a multiplexing unit 114, an encryption unit 115, and a transmission unit 116.

  The program data acquisition unit 111 acquires video data indicating video composing a broadcast program and audio data indicating audio from the program data. The program data acquisition unit 111 acquires video data encoded by a predetermined video encoding method. The program data acquisition unit 111 acquires audio data encoded by a predetermined audio encoding method. The program data acquisition unit 111 generates program data in a predetermined format from the acquired video data and audio data, and outputs the generated program data to the multiplexing unit 114.

  Here, the predetermined video encoding method is, for example, ISO / IEC 23008 HEVC (International Organization for Standardization / International Electronic Commission 230308 Part2 High Efficiency Video).

The predetermined audio encoding method is an audio encoding method defined by, for example, ISO / IEC 14496 Part 3 (also simply referred to as MPEG-4 audio).
The program data in a predetermined format is, for example, an MPU (Media Processing Unit) defined by ISO / IEC 23008 Part 1 MMT (MPEG Media Transport, also simply referred to as MMT). Each MPU includes video data or audio data of a unit that can perform video and audio decoding processing.

  The character data acquisition unit 112 acquires character data transmitted by character multiplex broadcasting. The character data is data in a predetermined format including character information indicating characters provided by character multiplex broadcasting and setting information indicating their display mode. The data in a predetermined format is data in a data format described in, for example, TTML (Timed Text Markup Language). The setting information includes structural information indicating the arrangement direction (vertical, horizontal) and the like as elements, and modification information such as character size (font size) and color. TTML is a description language that describes these setting information by enclosing them with a predetermined character string (tag). Each element of the setting information may be referred to as an attribute. In TTML, characters to which setting information is applied are specified by surrounding them between a start tag and an end tag. The character data acquisition unit 112 outputs the acquired character data to the multiplexing unit 114.

  In TTML, not all elements of the setting information need be included, and are arbitrary. The TTML is described in detail in, for example, the following source ("Timed Text Markup Language 1 (TTML1) (Second Edition)", [online], W3C, [December 22, 2014 search], Internet <URL: http://www.w3.org/TR/2013/REC-ttml1-20130924/>).

  The configuration information acquisition unit 113 acquires configuration information related to components of services provided by broadcasting, such as broadcast programs and text multiplex broadcasting. The configuration information includes assets that are components of broadcast programs, text multiplex broadcasting, etc., that is, a list of video, audio, text information, etc., and information indicating their requirements. The configuration information is represented by data in a predetermined format (for example, MMT-SI: MMT-System Information, etc.). The configuration information includes an MP table (MPT: MMT Package Table) and a layout setting table (LCT: Layout Configuration Table). The MPT is data in which a list of assets, information indicating a service type such as subtitles or text super, and the like are described. The layout setting table is data in which arrangement information indicating the presentation area of each asset is described. The configuration information acquisition unit 113 outputs the acquired configuration information to the multiplexing unit 114.

  The multiplexing unit 114 multiplexes the program data input from the program data acquisition unit 111, the character data input from the character data acquisition unit 112, and the configuration information input from the configuration information acquisition unit 113 to obtain a predetermined format ( For example, multiplexed data of TLV (Type Length Value packet) is generated. The multiplexing unit 114 outputs the generated multiplexed data to the encryption unit 115.

  The encryption unit 115 encrypts the multiplexed data input from the multiplexing unit 114 using a predetermined encryption method (for example, AES: Advanced Encryption Standard). The encryption unit 115 outputs the encrypted multiplexed data to the transmission unit 116.

  The transmission unit 116 transmits the multiplexed data input from the encryption unit 115 to the reception device 30 via the broadcast transmission path 12. Here, the transmitting unit 116 modulates a carrier wave having a predetermined carrier frequency by using multiplexed data that is a baseband signal, and transmits a radio wave (broadcast wave) in a channel band corresponding to the carrier frequency by an antenna (not shown). Radiate (transmit).

Here, the layout setting table will be described.
The layout setting table is setting information used for designating one or a plurality of presentation areas in the display area of the receiving device 30. The layout setting table includes information such as the number of layouts / devices, the layout number, the output destination device, the number of presentation areas, the position of the presentation area, and the like.

  The number of layout devices is the number of layout / device pairs. Each layout is designated by a layout number. The output destination device is a device that displays a display element, for example, a display unit 319 (described later) of the receiving device 30. The number of presentation areas is the number of presentation areas in one layout and device set. Each presentation area is specified by an area number. The position of the presentation area is specified by an upper left position and a lower right position in the presentation area. The upper left position is designated by the upper left horizontal position and the upper left vertical position. The lower right position is specified by the lower right horizontal position (and the lower right vertical position).

  Next, the configuration of the receiving device 30 will be described. FIG. 3 is a block diagram illustrating an example of the configuration of the receiving device 30 according to the present embodiment. The receiving device 30 includes a receiving unit 311, a decoding unit 312, a separation unit 313, an audio decoding unit 314, a playback unit 316, a video decoding unit 317, a display synthesis unit 318, a display unit 319, and a storage unit. 322, an operation input unit 323, a device connection unit 324, and a control unit 330.

  The reception unit 311 receives the broadcast wave transmitted by the transmission device 10 via the broadcast transmission path 12 and an antenna (not shown). For example, the receiving unit 311 is a tuner. The receiving unit 311 converts the received signal received into the multiplexed data by down-converting the received signal into a baseband signal at the frequency of the channel specified by the channel selection signal input from the control unit 330. The receiving unit 311 outputs the converted multiplexed data to the decoding unit 312.

  The decryption unit 312 decrypts the multiplexed data input from the reception unit 311 using a decryption method (for example, AES) corresponding to the encryption method used by the encryption unit 115 of the transmission apparatus 10 and decrypts the multiplexed data. Generate data. The decoding unit 312 outputs the generated multiplexed data to the separation unit 313.

  The separation unit 313 separates the multiplexed data input from the decoding unit 312 into program data, character data, and configuration information. The separation unit 313 outputs the character data and the configuration information to the control unit 330. Further, the separation unit 313 extracts audio data and video data from the program data. The separation unit 313 outputs the extracted audio data to the audio decoding unit 314, and outputs the video data to the video decoding unit 317.

The audio decoding unit 314 decodes the audio data input from the separation unit 313 using a decoding method corresponding to the encoding method (for example, MPEG-4 audio) used for encoding, and generates original audio data To do. The decoded audio data is data indicating the audio level at each time. The audio decoding unit 314 outputs the decoded audio data to the reproduction unit 316.
The playback unit 316 plays back the voice indicated by the voice data input from the voice decoding unit 314.
The playback unit 316 includes, for example, a speaker.

  The video decoding unit 317 decodes the video data input from the separation unit 313 by decoding the video data input by a decoding method corresponding to the encoding method (for example, HEVC) used for encoding. Generate video data. The decoded video data is data indicating signal values forming a video (frame image) at each time. The video decoding unit 317 outputs the decoded video data to the display synthesis unit 318.

  The display composition unit 318 receives video data from the video decoding unit 317 and character information and presentation area information from the control unit 330. The display synthesis unit 318 synthesizes the video for display (display video) by arranging the video indicated by the video data and the characters indicated by the character information in the presentation area specified by the presentation area information, and displays the display video data. Generate. The display composition unit 318 outputs to the display unit 319 display image data representing characters and characters arranged in a display image indicating the synthesized display image.

  The display unit 319 displays a display video based on the display video data input from the display synthesis unit 318. The display unit 319 is a display such as a liquid crystal display, an organic EL (Electroluminescence) display, a plasma display, or the like. The display unit 319 displays the presentation element (video, text) designated in the presentation area designated by the arrangement information or the like.

  The storage unit 322 stores various data. The storage unit 322 stores, for example, character area setting data (described later). The storage unit 322 includes a storage medium, for example, an HDD (Hard-disk Drive), a flash memory, a ROM (Read-only Memory), a RAM (Random Access Memory), or a combination thereof.

  The operation input unit 323 acquires an operation signal generated by receiving an operation input by the user, and outputs the acquired operation signal to the control unit 330. The operation signal includes, for example, a signal indicating ON / OFF of a power supply, a signal indicating a broadcast wave channel, and a signal designating the size of a presentation element (character, video). The operation input unit 323 is, for example, an operation button, an input interface that receives an operation signal from a remote operation device (remote controller), or the like.

  The device connection unit 324 acquires device information including operation signals and display area information from the electronic device 40. In addition, the device connection unit 324 outputs various data to the electronic device 40. The device connection unit 324 is, for example, an input / output interface for wired or wireless connection with the electronic device 40.

  The control unit 330 controls various operations of the receiving device 30. For example, the control unit 330 acquires character data and configuration information from the separation unit 313. The control unit 330 extracts arrangement information indicating the presentation area of the character information included in the character data and the presentation area of the video indicated by the video data from the acquired configuration information. The control unit 330 determines whether or not all character information can be displayed in the character information presentation area, and if it is determined that all character information cannot be displayed in the character information presentation area, Performs processing to adjust the display position. For example, the control unit 330 outputs character information and presentation area information indicating a presentation area for each display element (video, character) to the display composition unit 318. In addition, the control unit 330 adjusts character information according to the results of various processes described later, and outputs (transmits) the electronic information to the electronic device 40 via the device connection unit 324.

(Configuration of control unit)
Next, the configuration of the control unit 330 of the receiving device 30 according to this embodiment will be described.
FIG. 4 is a block diagram illustrating an example of the configuration of the control unit 330 according to the present embodiment. The control unit 330 includes a character data acquisition unit 332, a setting information detection unit 333, a device connection confirmation unit 335, an arrangement information acquisition unit 336, a display control unit 337, and a channel selection unit 338. .

  The character data acquisition unit 332 detects the character data input from the separation unit 313. Specifically, the character data acquisition unit 332 detects the MPT from the configuration information input from the separation unit 313, and outputs a stream in which stpp indicating timed text is described in the detected asset type (asset_type) of the MPT. Identify. The character data acquisition unit 332 reads the MH-data encoding scheme descriptor (MH-Data_Component_Descriptor ()) from the asset descriptor area (asset_descriptors_byte) of the identified stream.

  The character data acquisition unit 332 reads the encoding method (for example, in digital broadcasting) indicated by the code described in the data encoding method identification (data_component_id) of the read MH-data encoding method descriptor (MH-Data_Component_Descriptor ()). Specify the subtitle encoding method. The character data acquisition unit 332 reads a subtitle identification tag (subtitle_tag) and a start MPU sequence number (start_sequen_sequence_sequ_sub_sequence) from the additional identification information (additional_data_component_info) of the MH-data encoding scheme descriptor (MH-Data_Component_Descriptor ()).

  The character data acquisition unit 332 inputs an MPU whose sequence number is the start MPU sequence number (start_mpu_sequence_number) or later among the MPUs including the read caption identification tag (subtitle_tag). Then, the character data acquisition unit 332 identifies the MFU in which the code “0000” is described in the data type (data_type) for each of the input MPUs. The character data acquisition unit 332 reads character data described by the TTML description method from the data byte (data_byte) of each identified MFU. The character data acquisition unit 332 outputs the read character data to the setting information detection unit 333.

  The setting information detection unit 333 detects setting information described in a region surrounded by a predetermined character string (start tag, end tag) from the character data input from the character data acquisition unit 332, and the predetermined character The character information to be applied for each setting information is specified based on the arrangement of the columns. The setting information detection unit 333 outputs the detected setting information and the specified character information to the display control unit 337.

  When the device connection confirmation notification is input from the display control unit 337, the device connection confirmation unit 335 confirms whether or not the electronic device 40 is connected to the device connection unit 324. The device connection confirmation unit 335 generates connection information including a connection state (connected or disconnected) of the electronic device 40 with respect to the receiving device 30, and outputs the generated connection information to the display control unit 337.

  The arrangement information acquisition unit 336 extracts a layout setting table (arrangement information) from the configuration information input from the separation unit 313. The arrangement information acquisition unit 336 analyzes the extracted arrangement information and specifies a presentation area for each display element (character, video). Specifically, the arrangement information acquisition unit 336 displays the position of the presentation area (upper left) as a presentation area for each set of layout number (layout_number), device ID (device_id) and area number (region_number) described in the layout setting table. A horizontal position (left_top_pos_x), an upper left vertical position (left_top_pos_y), a lower right horizontal position (right_down_pos_x), and a lower right vertical position (right_down_pos_y)) are specified.

  The arrangement information acquisition unit 336 specifies, for example, the display composition unit 318 connected to the display unit 319 as an output destination based on the device ID (device_id). On the other hand, the arrangement information acquisition unit 336 detects the MPU presentation area designation descriptor (MPU_Presentation_Region_Descriptor ()) described in the asset descriptor area of the MPT among the configuration information input from the separation unit 313. The arrangement information acquisition unit 336 stores the MPU of the MPU storing data (character data, video data) indicating display elements for each set of layout number (layout_number) and region number (region_number) from the detected MPU presentation region designation descriptor. A sequence number (mpu_sequence_number) is specified. The arrangement information acquisition unit 336 outputs the presentation area information indicating the presentation area for each display element specified by the combination of the layout number (layout_number) and the area number (region_number) to the display control unit 337.

  When the display area information indicating the display area for each display element input from the arrangement information acquisition unit 336 and the character information and setting information input from the setting information detection unit 333 are input, the display control unit 337 A device connection confirmation notification is output to the connection confirmation unit 335. When the connection information is input as a response to the device connection confirmation notification from the device connection confirmation unit 335, the display control unit 337 displays the presentation region information indicating the display region for each display element, character information and setting information, connection information, Character information analysis processing is performed based on the above.

Specifically, the display control unit 337 analyzes for each character whether or not all characters included in the character information can be displayed in the presentation area indicated by the presentation area information based on the setting information. When all character information can be displayed in the presentation area indicated by the presentation area information as a result of the analysis, the display control unit 337 displays the character information and setting information, and the presentation area information indicating the presentation area for each display element. The data is output to the display composition unit 318.
On the other hand, if the display control unit 337 determines that all character information cannot be displayed in the presentation area indicated by the presentation area information as a result of the analysis, that is, if it is determined to display character information outside the presentation area, the connection information If the electronic device 40 is connected to the electronic device 40, all character information including character information of characters determined to be undisplayable in the presentation area indicated by the presentation region information is sent via the device connection unit 324 to the electronic device. 40, and outputs the character information and setting information of characters that can be displayed in the presentation area and the presentation area information indicating the presentation area for each display element to the display composition unit 318.

  Further, if the display control unit 337 determines that all character information cannot be displayed in the presentation area indicated by the presentation area information as a result of the analysis, that is, if it is determined that character information is displayed outside the presentation area, the connection information If it is not connected to the electronic device 40, a new presentation area and setting information are set for the character information of the character determined to be undisplayable in the presentation area indicated by the presentation area information.

Specifically, the display control unit 337 displays the character information of characters that can be displayed in the presentation region that does not affect the display of the character information that can be displayed in the presentation region among the presentation regions indicated by the presentation region information. A presentation area that is not used for display is set as a new presentation area. In addition, the display control unit 337 sets new setting information for displaying all character information of characters that cannot be displayed in the presentation area indicated by the presentation area information in the new presentation area. For example, the display control unit 337 reduces all character information of characters that cannot be displayed in the presentation area indicated by the presentation area information to the size of characters that can be presented in the new presentation area, and the size of the characters. The updated setting information is set as new setting information. Here, the new setting information is, for example, data in a data format described in TTML, like the setting information described above, and the structure information indicating the arrangement direction (vertical, horizontal), etc. as the element, Modification information such as size (font size) and color is included.
The display control unit 337 includes character information and setting information of characters that can be displayed in the presentation area, presentation area information indicating a presentation area for each display element, character information of characters that cannot be displayed in the presentation area, and new setting information. The presentation area information indicating the new presentation area is output to the display composition unit 318.

Note that the display control unit 337 displays display elements that are designated so that the display areas do not overlap among the display elements in the entire display area of the display unit 319 and the display area of all the display elements does not exceed the entire display area. You may make it update the magnitude | size of presentation areas other than. For example, when the display area of the designated display element is enlarged, the display control unit 337 reduces the presentation area of the non-designated display element, and when the display area of the designated display element is reduced, What is necessary is just to enlarge the presentation area | region of the display element outside a designation | designated.
When the presentation area other than the designated display element is a character presentation area, the display control unit 337 sets the font size designated by the setting information related to the character information to the font corresponding to the update of the presentation area. You may make it update to the setting information which shows a size. That is, the display control unit 337 may change the setting information to indicate a larger or smaller font size in accordance with the enlargement or reduction of the presentation area.

  The channel selection unit 338 selects a channel for receiving a broadcast wave according to the operation signal input from the operation input unit 323. The channel selection unit 338 outputs a channel selection signal indicating the selected channel to the reception unit 311.

Next, the flow of reception processing in the reception device 30 will be described.
FIG. 5 is a flowchart illustrating an example of reception processing according to the present embodiment.
In step S101, the separation unit 313 extracts program data and character data from the multiplexed signal transmitted by the broadcast wave, and acquires video data from the program data. The character data acquisition unit 332 acquires character data from the separation unit 313. Thereafter, the process proceeds to step S102.

In step S102, the display control unit 337 analyzes, for each character, whether or not all the characters included in the character information can be displayed in the presentation area indicated by the presentation area information.
In step S103, the display control unit 337 determines whether all character information can be displayed in the presentation area indicated by the presentation area information as a result of the analysis.

  In step S104, if the display control unit 337 determines that all the character information can be displayed in the presentation area indicated by the presentation area information as a result of the analysis (step S103; YES), the character information and the setting information, The presentation area information indicating the presentation area for each display element is output to the display composition unit 318. That is, the display control unit 337 determines to display the character information based on the setting information in the presentation area designated by the broadcaster, and the character (caption) corresponding to the character information is displayed via the display composition unit 318 and the display unit 319. Or a super character).

  In step S105, if the display control unit 337 determines that all character information cannot be displayed in the presentation area indicated by the presentation area information as a result of the analysis (step S103; NO), the display control unit 337 causes the device connection confirmation unit 335 to Output device connection confirmation notification. The display control unit 337 determines whether or not the electronic device 40 is connected to the receiving device 30 based on the connection information input as a response to the device connection confirmation notification from the device connection confirmation unit 335.

  In step S106, when it is determined that the display control unit 337 is connected to the electronic device 40 (step S105; YES), the display control unit 337 includes character information of characters determined to be undisplayable in the presentation area indicated by the presentation area information. All the character information is transmitted to the electronic device 40 via the device connection unit 324, and the character composition information and setting information of characters that can be displayed in the presentation region and the presentation region information indicating the presentation region for each display element are displayed. Output to 318. Then, all the characters corresponding to the character information are displayed on the electronic device 40, and the characters (caption and character super) corresponding to the character information that can be displayed in the presentation area are displayed via the display composition unit 318 and the display unit 319. To do.

  In step S107, if the display control unit 337 is not connected to the electronic device 40 (step S105; NO), the display control unit 337 does not affect the display of character information that can be displayed in the presentation area among the presentation areas indicated by the presentation area information. A presentation area, that is, a presentation area that is not used to display character information of characters that can be displayed in the presentation area is set as a new presentation area. In addition, the display control unit 337 sets new setting information for displaying all character information of characters that cannot be displayed in the presentation area indicated by the presentation area information in the new presentation area. The display control unit 337 includes character information and setting information of characters that can be displayed in the presentation area, presentation area information indicating a presentation area for each display element, character information of characters that cannot be displayed in the presentation area, and new setting information. The presentation area information indicating the new presentation area is output to the display composition unit 318. And while displaying the character (caption and character super) corresponding to the character information which can be displayed in a presentation area via the display composition part 318 and the display part 319, the unused presentation area (new) of a presentation area Character corresponding to character information that cannot be displayed in the presentation area is displayed.

FIG. 6 is an explanatory diagram illustrating an example of a display example on the display unit 319 of the receiving device 30 according to the present embodiment.
Assume that the display area of the character information is designated as the lower quarter of the display area of the display unit 319 of the receiving device 30. In this lower 1/4 display area, one line of character data can be displayed.

  FIG. 6A shows, as a conventional example, when one line of character data can be displayed on the display area HA1 of the display unit 319 of the receiving device 30 that is determined in advance by a broadcaster or the like. For example, if there are 3 lines, 1st line “Aiueo”, 2nd line “Kakikukeko”, 3rd line “Sashisuseso”, for example, only “Sashisuseso” in the last line and 3rd line will be displayed. In some cases, not all character data could be displayed.

FIG. 6B shows the received character data in the first line on the display unit of the electronic device 40 connected to the receiving device 30 as described in the above embodiment with respect to FIG. Character information of characters that can be displayed in the display area HA1 of the display unit 319 in the receiving device 30 is displayed, for example, all the character information of “Aiueo”, “Kakikukeko” on the second line, and “Sashisuseso” on the third line. This is an example when the third line “Sashisuseso” is displayed.
As described above, when all the character information cannot be displayed in the character information display area HA1 of the receiving device 30, the display unit of the electronic device 40 connected to the receiving device 30 is used as an extended display, so that the user can All of the information can be confirmed, and convenience can be improved.

6C is similar to FIG. 6A in the case where the electronic device 40 is not connected to the receiving device 30, as described in the above embodiment, that is, in FIG. 6A. When the character information is displayed only on the receiving device 30, the display area HA1 includes a new display area in the display area HA1 in the display area that is not used when the character information “Sashisuseso” for one line is displayed in the display area HA1. This is when the display area HA2 is provided. At this time, “Sashisuseso” for one line is displayed in the display area HA1, and two lines “Aiueo” and “Kakikukeko” that cannot be displayed in the display area HA1 are displayed in the display area HA2. This is an example when the character information is displayed with the character size reduced, for example.
In this way, since it is possible to display character information that could not be displayed in a display area that is not used in the character information display area, the user can check all of the character information. Can be improved.

  Whether character information is displayed on the electronic device 40 as shown in FIG. 6B or whether character information is displayed in a new display area in the receiving device 30 as shown in FIG. 6C depends on the setting by the user. It may be configurable.

  Note that the lower 1/4 has been described as an example of the layout setting table, but is not limited to the lower 1/4. For example, the lower 1/2, the lower 3/4, the upper 1/4, and the upper 1/4 Even in the case of 2 or the like, the present embodiment can be applied.

  As described above, the receiving device 30 according to the present embodiment includes the receiving unit 311 that receives received data by broadcast waves, the display element including character data from the received data, and the arrangement information indicating the display area of the display element. Based on the acquisition unit (separation unit 313, character data acquisition unit 332, arrangement information acquisition unit 335) to be acquired and the arrangement information, it is determined whether or not all the display elements can be displayed in the presentation area, and the presentation A display control unit 337 that changes a display mode of the display element when not all the display elements can be displayed in the region.

  As a result, when a display element including character data is not displayable in the presentation area, the display aspect of the display element can be changed so that all display elements can be displayed. The user convenience can be improved.

  In addition, you may make it implement | achieve a part or all function of the control part 330 in embodiment mentioned above with a computer. In that case, a program for realizing the above-described function is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed to realize the above-described function. Also good. Here, the “computer system” is a computer system built in the terminal device, and includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In this case, a volatile memory inside a computer system that serves as a server or a client may be included that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Moreover, you may implement | achieve part or all of the control part 330 in embodiment mentioned above as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the control unit 330 may be individually made into a processor, or a part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to the advancement of semiconductor technology, an integrated circuit based on the technology may be used.

  (1) Based on the receiving unit that receives received data by broadcast waves, a display element that includes character data from the received data, an acquiring unit that acquires arrangement information indicating a presentation area of the display element, and the arrangement information A display control unit that determines whether or not all of the display elements can be displayed in the presentation area, and changes a display mode of the display elements when all of the display elements are not displayable in the presentation area. Receiver device.

  (2) The receiving device according to (1), wherein the display control unit changes a display mode of the display elements that are not displayable in the presentation area when all the display elements are not displayable in the presentation area.

  (3) The display control unit according to (1) or (2), wherein the display area of the display element that is not displayable in the presentation area is changed when all the display elements are not displayable in the presentation area. Receiver device.

(4) A transmission unit is further provided,
The said display control part transmits the said display element which cannot be displayed in the said presentation area, when all the said display elements are not displayable in the said presentation area, The reception as described in any one of (1) to (3) apparatus.

  (5) Based on the reception step of receiving the reception data by broadcast waves, the acquisition step of acquiring the display element including the character data from the reception data, the arrangement information indicating the display area of the display element, and the arrangement information And a display control step of determining whether or not all the display elements can be displayed in the presentation area, and changing the display mode of the display elements when all the display elements are not displayable in the presentation area. Reception method.

  (6) A reception step of receiving reception data by broadcast waves in a computer, a display element including character data from the reception data, an acquisition step of acquiring arrangement information indicating a display area of the display element, and the arrangement information A display control step of determining whether or not all the display elements can be displayed in the presentation area, and changing the display mode of the display elements when all the display elements are not displayable in the presentation area; , A program for running.

DESCRIPTION OF SYMBOLS 10 Transmitting device, 13 Broadcasting satellite, 30 Receiving device, 40 Electronic equipment, 111 Program data acquisition part, 112 Character data acquisition part, 113 Configuration information acquisition part, 114 Multiplexing part, 115 Encryption part, 116 Transmission part, 311 Reception Unit, 312 decoding unit, 313 separation unit, 314 audio decoding unit, 316 playback unit, 317 video decoding unit, 318 display synthesis unit, 319 display unit, 330 control unit, 322 storage unit, 323 operation input unit, 324 device connection unit 332 character data acquisition unit, 333 setting information detection unit, 335 device connection confirmation unit, 336 arrangement information acquisition unit, 337 display control unit, 338 channel selection unit

Claims (6)

A receiving unit for receiving received data by broadcast waves;
A display element including character data from the received data, and an acquisition unit that acquires arrangement information indicating a display area of the display element;
Display that determines whether or not all the display elements can be displayed in the presentation area based on the arrangement information, and changes the display mode of the display element when all the display elements are not displayable in the presentation area A control unit;
A receiving device.   The receiving device according to claim 1, wherein the display control unit changes a display mode of the display elements that are not displayable in the presentation area when all the display elements are not displayable in the presentation area.   The receiving device according to claim 1, wherein the display control unit changes a presentation area of the display element that is not displayable in the presentation area when all the display elements are not displayable in the presentation area. A transmission unit;
The reception according to any one of claims 1 to 3, wherein the display control unit transmits the display element that is not displayable in the presentation area when all of the display elements are not displayable in the presentation area. apparatus. A reception step of receiving received data by broadcast waves;
A display element including character data from the received data, and an acquisition step of acquiring arrangement information indicating a display area of the display element;
Display that determines whether or not all the display elements can be displayed in the presentation area based on the arrangement information, and changes the display mode of the display element when all the display elements are not displayable in the presentation area Control steps;
Receiving method. On the computer,
A reception step of receiving received data by broadcast waves;
A display element including character data from the received data, and an acquisition step of acquiring arrangement information indicating a display area of the display element;
Display that determines whether or not all the display elements can be displayed in the presentation area based on the arrangement information, and changes the display mode of the display element when all the display elements are not displayable in the presentation area Control steps;
A program for running

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