JP2014022958A - Digital broadcast receiver and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcast receiver and the like capable of checking a viewing content selected in a sub channel while viewing broadcast selected in a main channel, in a mobile terminal.SOLUTION: A digital broadcast receiver comprises: first and second reception units for receiving digital broadcast; a video decoder unit for decoding video data from digital broadcast received by the first reception unit; a first caption decoder unit for decoding caption data from the digital broadcast received by the first reception unit; a second caption decoder unit for decoding caption data from digital broadcast received by the second reception unit; a selection unit for selecting the caption data decoded by the first caption decoder unit or the caption data decoded by the second caption decoder unit; and an output unit which synthesizes the video data and the caption data selected by the selection unit and outputs the synthesized data.

Description

  The present invention relates to a digital broadcast receiver and the like.

  In recent years, portable terminals having various functions have become widespread. In particular, in a multifunctional terminal with a mobile phone function called a smartphone, not only the function of the mobile phone, but also displays various images and images, plays music, displays electronic books, and displays Internet information. It is equipped with various functions such as making it easy to use.

  As one of the functions of such a portable terminal, a device including a digital broadcast receiving device is known. For example, portable terminals that receive and display terrestrial digital broadcasts such as full segment and one segment are known. In this case, a technique for displaying a main screen and a sub screen by providing two tuners in consideration of ease of channel selection by a viewer is known (for example, see Patent Document 1).

  In this case, a technique is known in which the main screen is displayed in a large size and the sub screen is displayed like a picture-in-picture or displayed in parallel. When two screens are displayed in this way, if the audio output of both screens is output, it becomes difficult for the user to hear. Therefore, for the sub screen, there is a method for displaying subtitles in the sub screen, or another subtitle screen. A technique such as a display method is known (see, for example, Patent Document 2).

JP 2007-028485 A JP 2001-268464 A

  In recent years, in a portable digital broadcast receiving apparatus typified by the above-mentioned smartphone or the like, the display unit is becoming larger. Because of the large screen, the user desires a highly convenient portable terminal by using the above two tuners.

  However, in the case of a mobile terminal represented by a smartphone, there is a limit to the size of the terminal device including the size of the display unit in order to use the function as a telephone even though the screen is becoming larger. Therefore, if two screens are displayed, the sub screen becomes too small, resulting in a problem that it cannot be visually recognized.

  Furthermore, decoding the broadcast received in the main and the broadcast received in the sub increases power consumption used for decoding, and causes a problem that the usage time of the terminal is shortened.

  In view of the above-described problems, an object of the present invention is to provide a digital broadcast receiving apparatus or the like capable of confirming viewing contents selected on a subchannel while viewing a broadcast selected on a main channel in a portable terminal. Is to provide.

In order to solve the above-described problem, the digital broadcast receiving apparatus of the present invention
A first receiver and a second receiver for receiving a digital broadcast;
A video decoder for decoding video data from the digital broadcast received by the first receiver;
A first subtitle decoder for decoding subtitle data from the digital broadcast received by the first receiver;
A second subtitle decoder for decoding subtitle data from the digital broadcast received by the second receiver;
A selection unit for selecting subtitle data decoded by the first subtitle decoder unit and subtitle data decoded by the second subtitle decoder unit;
An output unit that synthesizes and outputs the subtitle data selected by the selection unit to the video data;
It is characterized by providing.

The program of the present invention
To a computer to which a first receiver and a second receiver that receive digital broadcasting are connected,
A video decoder function for decoding video data from the digital broadcast received by the first receiver;
A first subtitle decoder function for decoding subtitle data from the digital broadcast received by the first receiver;
A second subtitle decoder function for decoding subtitle data from the digital broadcast received by the second receiver;
A selection function for selecting subtitle data decoded by the first subtitle decoder function and subtitle data decoded by the second subtitle decoder function;
An output function for synthesizing and outputting the subtitle data selected by the selection function to the video data;
It is characterized by realizing.

  According to the digital broadcast receiving apparatus of the present invention, while displaying the video data decoded from the digital broadcast received by the first receiver, the caption data decoded from the digital broadcast received by the second receiver is displayed. Can be made. That is, it is possible to display the contents of the sub-channel program while outputting the contents of the main channel.

It is a figure for demonstrating the external appearance of the portable terminal in this embodiment. It is a figure for demonstrating the function structure of the portable terminal in this embodiment. It is a figure for demonstrating the function structure of the broadcast receiving part in this embodiment. It is a figure for demonstrating the flow of the process in this embodiment. It is a figure for demonstrating the example of a process in this embodiment. It is a figure for demonstrating the example of a process in this embodiment.

  Next, a digital broadcast receiving apparatus when the present invention is applied will be described. As an example of a digital broadcast receiving apparatus, a multi-function telephone having a telephone function, a so-called smartphone will be described as an example, but a digital broadcast receiving apparatus with a limited display size, for example, a portable TV, having a TV function Of course, the present invention is applicable to information devices such as electronic dictionaries, car navigation devices, and the like.

[1. overall structure]
First, the external appearance of the portable terminal 1 to which the digital broadcast receiving device is applied will be described. As shown in FIG. 1, the mobile terminal 1 is a terminal that can receive digital broadcasting (for example, terrestrial digital broadcasting) by a broadcasting station 20.

  In the present embodiment, the description will be made assuming that the apparatus receives digital terrestrial broadcasts from the broadcast station 20, but other broadcast systems such as BS digital broadcasts may be used, and other communication systems such as IP multicast broadcasts may be used. There may be.

[2. Functional configuration]
Next, the functional configuration of the mobile terminal 1 will be described with reference to the drawings.

[2.1 General description]
The portable terminal 1 includes a control unit 1000, a broadcast receiving unit 1100, a video display unit 1200, an audio output unit 1300, a storage unit 1400, an operation unit 1500, and a telephone function unit 1600. .

  The control unit 1000 is a functional unit for controlling the entire mobile terminal 10. The control unit 1000 implements various functions by reading and executing various programs stored in the storage unit 1400, and is configured by, for example, a CPU (Central Process Unit).

  The broadcast receiving unit 1100 is a functional unit that receives broadcast waves, decodes them, and outputs video data, audio data, caption data, and the like. Detailed operation of the broadcast receiving unit 1100 will be described in detail with reference to FIG.

  The video display unit 1200 is a functional unit that displays video data and subtitle data decoded by the broadcast receiving unit 1100. For example, it is configured by a display device such as a liquid crystal display or an organic EL panel. In this embodiment, a video display unit 1200 is included to describe a mobile terminal as an embodiment. However, for example, in the case of a digital broadcast tuner or the like, output is performed to a display device connected to the outside. Also good.

  The audio output unit 1300 is a functional unit that outputs audio data decoded by the broadcast receiving unit 1100. For example, it is configured by a speaker, an earphone or the like.

  The storage unit 1400 is a functional unit that stores various programs necessary for the operation of the mobile terminal 10 and various data. The storage unit 1400 is configured by, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like.

  In addition, the storage unit 1400 in the present embodiment stores the caption data to be decoded. The storage unit 1400 stores setting information such as whether to use subchannel subtitles.

  The operation unit 1500 is a functional unit for the user to perform various operations on the mobile terminal 1. For example, it is configured by a soft key displayed on a touch panel formed integrally with the video display unit 1200, a hard key provided in the mobile terminal 1, and the like.

  The telephone function unit 1600 is a function unit used when the mobile terminal 1 operates as a mobile phone. The description of the operation is omitted because it is not directly related to the present invention.

[2.2 Broadcast receiver]
Next, the configuration and operation of the broadcast receiving unit will be described with reference to FIG. The broadcast wave received by the external antenna 110 is selected by the tuner unit 120 and the channel desired by the user is selected and output to the DEMUX 130. Then, video data (including audio data if there is audio data) is output from the DEMUX 130 to the video decoder unit 140, and caption data is output to the caption decoder unit 150.

  Here, a broadcast wave selected as a channel on which a user displays an image, that is, a main channel, is selected by the tuner unit 120a. Then, the broadcast wave is demodulated by the DEMUX 130a, video data including audio data is output to the video decoder unit 140, and caption data is output to the caption decoder unit 150a.

  A broadcast wave selected by the user as a sub channel is selected by the tuner unit 120b. Then, the broadcast wave is demodulated by the DEMUX 130b, and the caption data is output to the caption decoder unit 150b.

  Then, the caption data output by the caption decoder unit 150 a and the caption decoder unit 150 b is output to the selection unit 160. The selection unit 160 selects the caption data to be output to the synthesis unit 170 and outputs it to the synthesis unit 170.

  Here, when it is set to display the subtitle data of the sub channel by the user, the selection unit 160 selects the subtitle data output by the subtitle decoder unit 150b.

  On the other hand, when it is not set to display the subtitle data of the sub channel by the user, the selection unit 160 selects the subtitle data output from the subtitle decoder unit 150a.

  Then, the synthesis unit 170 synthesizes the video data input from the video decoder unit 140 and the caption data input from the selection unit 160.

  Note that when the caption data is set to non-display according to the setting of the user, the synthesis unit 170 outputs only the video data output by the video decoder unit 140.

  Then, the video synthesized by the synthesis unit 170 is output to the output unit 180, and the output unit 180 outputs the video (for example, displayed as a video on the video display unit 1200 in FIG. 2).

[3. Process flow]
Subsequently, the flow of processing in the present embodiment will be described with reference to the drawings.

  First, the user sets whether to use the subchannel (step S102). It may be set at the beginning of processing as in the present embodiment, or may be set in a setting mode or the like as needed.

  Next, the function of the digital television is activated (step S104). At this time, the channel (main channel) received as the main by the user is selected. Then, the video of the main channel is decoded (demodulated) and output to the output unit 180 (step S106).

  Here, it is determined whether or not the subchannel is used (step S110). If it is set to use the subchannel (step S110; Yes), the subchannel is selected (step S112), and subtitle data of the subchannel is decoded (demodulated), selected, and output.

  On the other hand, if the sub channel is not set to be used (step S110; No), the main channel subtitle data is decoded (demodulated), selected, and output.

[4. Example of operation]
Next, an operation example will be described with reference to the drawings. 5 and 6 are examples of display screens. In the display screen W100 of FIG. 5, the video data of the main channel is displayed in the area R100, and the subtitle data corresponding to the main channel is displayed in the subtitle area R110.

  In the display screen W200 of FIG. 6, the video data of the main channel is displayed, but the caption data corresponding to the subchannel is displayed in the caption area R210. Thereby, the user can confirm what kind of broadcasting is being performed on the subchannel while first confirming the video of the main channel.

  Further, the identifier R120 is displayed on the display screen W100 of FIG. 5, and the identifier R220 is displayed on the display screen W200 of FIG. In this way, for example, by displaying the identification mark, it is possible to visually recognize whether the currently displayed caption data is for the main channel or the sub-channel.

  In this case, for example, subtitle data of the main channel or subtitle data of the subchannel may be identified and displayed by changing the color of the subtitle data, changing the size, or changing the font. .

[5. effect]
As described above, according to the above-described embodiment, it is possible to display subchannel subtitle data, that is, program contents while displaying the main channel. As a result, the program contents of both channels can be confirmed without displaying video, so that an extremely effective technique can be provided in an apparatus with a limited display size.

  Furthermore, even when two programs, ie, a main channel and a sub channel, are received, video can be decoded by one channel, so that power supply to the decoder unit can be reduced. As a result, it is possible to provide a power-saving digital broadcast receiving apparatus, which is particularly effective for a battery-driven apparatus such as a portable terminal.

[5. Modified example]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design and the like within the scope of the present invention are also within the scope of the claims. include.

  In the above-described embodiment, the main channel and the sub channel are alternatively displayed as the caption data, but both may be displayed. For example, subtitle data corresponding to the main channel may be combined at the top of the display screen, and subtitle data corresponding to the sub channel may be combined at the bottom of the display screen.

  In addition, the program that operates in each device in the embodiment is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments. Information handled by these devices is temporarily stored in a temporary storage device (for example, RAM) at the time of processing, then stored in various ROM or HDD storage devices, and read and corrected by the CPU as necessary. • Writing is performed.

  Here, as a recording medium for storing the program, a semiconductor medium (for example, ROM, a non-volatile memory card, etc.), an optical recording medium / a magneto-optical recording medium (for example, a DVD (Digital Versatile Disc), an MO ((Magnetoto (Optical Disc), MD (Mini Disc), CD (Compact Disc), BD, etc.), magnetic recording medium (eg, magnetic tape, flexible disk, etc.), etc. Also, the loaded program is executed. Thus, not only the functions of the above-described embodiment are realized, but also the functions of the present invention are realized by processing in cooperation with an operating system or other application programs based on the instructions of the programs. There is also.

  In addition, when distributing to the market, the program can be stored and distributed in a portable recording medium, or transferred to a server computer connected via a network such as the Internet. In this case, of course, the storage device of the server computer is also included in the present invention.

  In addition, a part or all of each device in the above-described embodiments may be realized as an LSI (Large Scale Integration) that is typically an integrated circuit. Each functional block of each device may be individually chipped, or a part or all of them may be integrated into a chip. 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 integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, it is of course possible to use an integrated circuit based on this technology.

1: mobile terminal 10: mobile terminal 20: broadcast station 110: external antennas 120, 120a, 120b: tuner units 130, 130a, 130b: DEMUX
140: Video decoder unit 150, 150a, 150b: Subtitle decoder unit 160: Selection unit 170: Synthesis unit 180: Output unit 1000: Control unit 1100: Broadcast reception unit 1200: Video display unit 1300: Audio output unit 1400: Storage unit 1500 : Operation unit 1600: Telephone function unit

Claims (2)

A first receiver and a second receiver for receiving a digital broadcast;
A video decoder for decoding video data from the digital broadcast received by the first receiver;
A first subtitle decoder for decoding subtitle data from the digital broadcast received by the first receiver;
A second subtitle decoder for decoding subtitle data from the digital broadcast received by the second receiver;
A selection unit for selecting subtitle data decoded by the first subtitle decoder unit and subtitle data decoded by the second subtitle decoder unit;
An output unit that synthesizes and outputs the subtitle data selected by the selection unit to the video data;
A digital broadcast receiving apparatus comprising: To a computer to which a first receiver and a second receiver that receive digital broadcasting are connected,
A video decoder function for decoding video data from the digital broadcast received by the first receiver;
A first subtitle decoder function for decoding subtitle data from the digital broadcast received by the first receiver;
A second subtitle decoder function for decoding subtitle data from the digital broadcast received by the second receiver;
A selection function for selecting subtitle data decoded by the first subtitle decoder function and subtitle data decoded by the second subtitle decoder function;
An output function for synthesizing and outputting the subtitle data selected by the selection function to the video data;
A program to realize

Images