JP2006014225A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable digital broadcast receiver which is small-sized, lightweight, improved in mobility and practically useful. <P>SOLUTION: A recording means 117 records a video signal, an audio signal and a data signal separated by a transport stream (TS) separating section 105 and a reproducing means 117 reproduces a designated signal among the recorded video signal, audio signal and data signal. Thus, only a signal corresponding to broadcast contents can be selectively reproduced, thereby reducing recording capacity of the recording means 117. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a digital broadcast receiver capable of receiving digital broadcasts.
More specifically, the present invention relates to an apparatus capable of recording and reproducing digital broadcast content.

  In recent years, the progress of electronic communication technology in mobile terminal devices typified by mobile phone devices has been remarkable, and such mobile terminal devices have become multifunctional and highly functional due to their convenience. The range of use is expanding. Examples of multi-function and high-function include, for example, communication functions such as Internet connection, e-mail functions, games, music playback, and FM broadcast reception.

  By the way, digital broadcasting of satellite broadcasting and terrestrial broadcasting has progressed, and digital broadcasting capable of high image quality, interactive participation-based broadcasting, data broadcasting, etc. has become a reality. In addition to broadcasting by video, data broadcasting such as weather forecasts, stock information, and various news has been digitized and broadcast.

  A mobile phone incorporating a TV tuner is known, for example, as shown in Patent Document 1. In terrestrial digital broadcasting or satellite digital broadcasting, mainly for small portable receivers having high portability. Broadcasting using the transmission band of 1 or 3 or segment is scheduled.

From such a situation, it is desirable to integrate a device capable of receiving, playing back, and recording the above-described digital broadcast as a single device integrally with a mobile phone device represented by a mobile terminal device.
However, it is not possible to overcome limitations such as battery power capacity, lifetime, and recording capacity by simply combining and integrating an existing mobile phone device and the above-described digital broadcast receiving device.

An example of the configuration of a digital broadcast receiving device that assumes a case where a mobile phone device and a device capable of receiving digital broadcasting are integrally configured by an existing method will be described with reference to FIG.
The antenna 713, the transmission / reception unit 714, the nonvolatile memory 715, the camera 716, the operation unit 717, and the microphone (MIC) 711 are for satisfying basic functions as a mobile phone device.

The configuration of the digital broadcast receiving apparatus illustrated in FIG. 7 will be described.
A broadcast wave is received by an antenna 701 for receiving a broadcast wave, a channel is selected by a tuner unit 702 for adjusting a frequency to a designated program, and a signal extracted by the tuner unit 702 is demodulated by a demodulation unit 703. The demodulator 703 outputs a transport stream (TS). The TS is information multiplexed together with a video signal (video signal), an audio signal (audio signal), and a data signal. A specific example of TS will be described in relation to the description of the embodiment of the present invention with reference to FIG.
When the transport stream (TS) output from the demodulator 703 is encrypted, the descrambler 704 performs decryption.
The decoded transport stream (TS) is separated into a video signal, an audio signal, and a data signal by a TS separation unit 705, respectively.
The video signal separated by the TS separation unit 705 is decoded (decoded) by the video signal decoding unit 707 and displayed as a video on the display unit 709. The audio signal separated by the TS separation unit 705 is decoded by the audio signal decoding unit 706 and output from the speaker 710 as sound. The data signal separated by the TS separation unit 705 is processed by the data signal processing unit 708, converted into display data, and displayed on the display unit 709 in the form of characters, numbers, figures, and the like.
The control unit 712 performs channel selection control of the tuner unit 702 and controls the mobile phone device.

When recording a digital broadcast by the digital broadcast receiving apparatus described above, a method of re-encoding and recording a video signal and an audio signal reproduced as described above at a specified time, The stream itself can be recorded.
JP 2000-9920 A

However, if the mobile device and the digital broadcast receiving device described above are simply configured, the following problems are encountered.
In the conventional program recording method in digital broadcasting, since all of the designated program contents are recorded in the memory at the designated time, a large amount of memory is required for recording. In addition, a large capacity memory is required.
Even if a large number of memories or large-capacity memories are used, the problem of increased power consumption of the battery (storage battery) is encountered.
Also, when the memory capacity of the built-in recording medium is small, the recording time is shortened as a result, and when recording a program over a long time such as a sports program, it is impossible to record up to that result. In order to record the program to the end, there was a drawback that a memory of a great cost had to be installed.
Further, in a portable device such as a cellular phone in which the storage memory capacity built into the device itself is limited, the recorded program content may be only a data signal or an audio signal such as a music program or news. Even in such recording contents, all of the recorded contents must be recorded, and it is difficult to use the recording memory effectively because each signal of video, audio, and data cannot be erased individually or multiple signals. there were.

An object of the present invention is to provide a digital broadcast receiving apparatus that is small and lightweight, excellent in portability, and practically usable.
Another object of the present invention is to overcome the above-mentioned problems and to provide a digital broadcast receiving apparatus suitable for a mobile object.

Broadcast programs (contents) are diversified, such as sports, music, dramas, movies, news, variety, and animation, but there are some movies, dramas, animations, etc. If you look only at the results, such as news, there are things that you don't have to see.
In sports and news programs, most users are satisfied if only the results can be recorded, and conversely, if the results cannot be recorded, they are often dissatisfied.
In addition, when a recorded music program is listened to later, it may be considered that no video is required.
As described above, depending on the broadcast program type, it can be considered that all broadcast contents need to be recorded and those that do not need to be recorded.
In addition, when data broadcasting is performed simultaneously with video and audio, the data broadcast is not necessarily recorded because the data plays a complementary role for video and audio (for example, the score of baseball broadcasts). There is no need to keep it.
The present invention provides a digital broadcast receiver that is effective and highly useful (practical) in consideration of the characteristics of the broadcast contents.

  According to a first aspect of the present invention, in a digital broadcast receiver configured to receive and output a stream in which a video signal, an audio signal, and a data signal are multiplexed, a video signal included in the received stream, A recording means for recording an audio signal and a data signal; a designation means for designating a specific signal from each signal recorded in the recording means; and a reproduction means for reproducing only the signal designated by the designation means. A digital broadcast receiver characterized by the above is provided.

  Preferably, a separation unit that separates the video signal, the audio signal, and the data signal included in the received stream, respectively, and the recording unit records each signal separated by the separation unit as a different file, and the designation The means designates the file, and the reproduction means reproduces the designated file.

  According to a second aspect of the present invention, in a digital broadcast receiver configured to receive and output a stream in which a video signal, an audio signal, and a data signal are multiplexed, a video signal included in the received stream, A recording means for recording an audio signal and a data signal; a designation means for designating a specific signal from each signal recorded in the recording means; and a deletion means for deleting only the signal designated by the designation means. A featured digital broadcast receiver is provided.

  Preferably, a separation unit that separates the video signal, the audio signal, and the data signal included in the received stream, respectively, and the recording unit records each signal separated by the separation unit as a different file, and the designation The means designates the file, and the deletion means deletes the designated file.

  According to the digital broadcast receiving apparatus of the present invention, it is possible to select a playback format in accordance with a user's usage form and the state of the apparatus, and it is possible to individually delete unnecessary signals, thereby reducing the recording capacity. be able to. Preferably, it is effective for a portable terminal with a small recording capacity.

With reference to the drawings, a preferred embodiment of the digital broadcast receiving apparatus of the present invention capable of receiving and recording a digital broadcast and re-outputting the desired broadcast contents in a desired format will be described.
As a preferred example of the digital broadcast receiving apparatus of the present invention, an apparatus configuration in which the digital broadcast receiving apparatus and a mobile phone device typified by a mobile device are integrated will be exemplified. A device in which a digital broadcast receiving device (function) and a mobile phone device are integrated based on the present invention is hereinafter referred to as a mobile phone device with a broadcast receiving function.
As an embodiment of the digital broadcast receiving apparatus of the present invention, the broadcast wave being broadcast exemplifies terrestrial digital broadcast.

First Embodiment FIG. 1 is a block diagram of a mobile telephone device with a broadcast receiving function according to a first embodiment of the present invention.
A mobile phone device 100 with a broadcast receiving function shown in FIG. 1 includes a common unit, a mobile phone device portion, and a digital broadcast receiving device portion.
The mobile telephone device 100 with a broadcast receiving function includes a control unit 112, a RAM 121, a ROM 122, an operation unit 115, a display unit 109, a recording unit 117, and a speaker 110 as common units.
The mobile phone device 100 with a broadcast receiving function includes a mobile phone antenna 113, a wireless communication unit 114, and a microphone (MIC) 111 in addition to the above-described common unit as a part for realizing the function of the mobile phone device. Have. As a mobile phone device portion, a camera portion 126 including an adjustment unit that performs processing such as a lens, a CCD, automatic focus adjustment, and automatic illumination adjustment can be added as necessary.
The mobile phone device 100 with a broadcast receiving function is a part that realizes the function of the digital broadcast receiving device, in addition to the above-described common unit, the digital broadcast receiving antenna 101, the tuner unit 102, the demodulating unit 103, the transport A stream (TS) separation unit 105, an audio signal decoding unit 106, a video signal decoding unit 107, a data signal processing unit 108, and a recording format selection unit 116 are included. Since the mobile telephone device 100 with a broadcast receiving function descrambles when the broadcast content is scrambled, a descrambler 104 can be added as necessary.
The signal processing parts such as the control unit 112, the recording format selection means 116, the reproduction means 118, and the erasure means 119 can be integrally configured by a single microcomputer.

Each component of the common part will be described.
The control unit 112 is implemented using, for example, a microcomputer, and performs control processing as a mobile phone device and control processing as a digital broadcast receiving device in accordance with various programs stored in the ROM 122. The RAM 121 temporarily records various data used for the processing of the control unit 112.
As described above, the control unit 112, the RAM 121, and the ROM 122 can be shared by the control unit of the mobile phone device and the control unit of the digital broadcast receiving device.

The operation unit 115 is also configured to be capable of both an operation for use as a mobile phone device and an operation for use as a digital broadcast receiving device.
Elements used as a mobile phone device include a numeric keypad, function keys, various selection buttons, and the like. When the camera portion 126 is provided, a camera operation switch or the like is also included.
What is used as a digital broadcast receiving apparatus is an operation switch for channel selection, an object to be recorded in the recording means 117 via the recording format selection means 116, that is, all signals, audio signals, or video signals. There are selection of data signal or combination of these, recording start time and end time, instruction to delete recorded information, etc., but use the numeric keypad, function key and above various selection buttons together Can do.

  The display unit 109 is, for example, a liquid crystal display widely used in mobile phone devices, and is used in combination as both display means for the mobile phone device and display means for the digital broadcast receiver.

Similarly, the speaker 110 is also used as an audio signal output unit of the mobile phone device and as an audio signal output unit of the digital broadcast receiving device.
In this specification, the term “sound signal” means a “sound signal” in a broad sense, including sound and various sounds.

  The recording unit 117 is, for example, a built-in or removable (replaceable) memory using a non-volatile memory, and is used as a recording unit of a digital broadcast receiving apparatus, as well as an image captured by the camera portion 116 of the mobile phone device, It can be used (sharable) for storing telephone directory data necessary for a telephone, incoming sound data necessary for incoming call notification, e-mail data, data received from a wireless communication network via a wireless unit, and the like.

Operation of Mobile Phone Device The basic operation when the mobile phone device 100 with broadcast receiving function is used as a mobile phone device will be described.
For example, when carrying out normal conversation, e-mail, etc. with the other party's mobile phone device, mobile phone antenna 113, wireless communication unit 114, operation unit 115, MIC 111, speaker 110, display unit 109, control unit 112, RAM 121, The ROM 122 operates.
Further, for example, when information is downloaded from a provider via the Internet and the information is stored, the recording means 117 also operates.
Note that, when the digital broadcast receiving apparatus is not operating, the control unit 112 achieves power saving such as turning off the power of the part related to the digital broadcast receiving apparatus.

When a user makes a call, when the user dials the number of the other party's mobile phone device using the operation unit 115 and makes a call, the wireless communication unit 114 and the mobile phone antenna 113 are controlled under the control of the control unit 112. Wirelessly connected to the base station via the mobile phone, connected to the other party's (called party) telephone (including the mobile phone device), and can make a call using the MIC 111 and the speaker 110.
The operation content of the operation unit 115, the call state, and the like are displayed on the display unit 109 under the control of the control unit 112.

  Further, when information is downloaded from the provider via the Internet and recorded in the recording means 117, wireless communication is performed via the mobile phone antenna 113 and the wireless communication unit 114, and the obtained information is recorded via the control unit 112. The information stored in the means 117 can be displayed on the display unit 109 from the control unit 112.

  When the mobile phone device is used as a camera, the above-described camera portion 116 is operated. The imaging result can be held in the recording unit 117, for example. That is, when the mobile phone device 100 with a broadcast receiving function is used, an image captured by the camera portion 126 can be held in the recording unit 117, and the mobile phone device can have a function as a digital camera.

Operation of the Digital Broadcasting Receiver The digital broadcast receiving antenna 101 continuously receives digital broadcast waves, and the tuner unit 102 selects a channel selected by the operation unit 115 and commanded by the control unit 112. Then, the broadcast content of the selected channel, that is, the transport stream (TS) is output to the demodulation unit 103.
The demodulator 103 demodulates the transport stream (TS) of the selected channel.

When the demodulated transport stream (TS) is scrambled, the descrambler 104 performs descrambling.
That is, when the transport stream (TS) is scrambled, the descrambler 104 for permitting reproduction by only a specific digital broadcast receiving apparatus (decrypting the encrypted broadcast of the limited reception method) It operates under the instruction of the control unit 112 and performs descrambling processing according to the scramble processing method.

In the transport stream (TS), as illustrated in an exemplary TS in FIG. 2, an audio signal, a video signal, a data signal, and program information are multiplexed on a packet basis.
For example, an audio signal and a video signal are compression encoded by the MPEG method.

The transport stream (TS) signal is separated into a video signal, an audio signal (audio / audio signal), a data signal, and program information for each packet by the TS separator 105.
The separated video signal is decoded by the video signal decoding unit 107 by, for example, the MPEG method and displayed on the display unit 109 as a video.
The separated audio signal is decoded by the audio signal decoding unit 106 using, for example, the MPEG method, and output from the speaker 110 as audio and / or sound.
The separated data signal is analyzed by the data signal processing unit 108, and when the content of the data signal is related to the broadcast service, it can be displayed / reproduced by the display means 109 or the like. Decode and display or play.

A case will be described in which the digital broadcast receiving device of the mobile phone device 100 with a recording broadcast receiving function in the digital broadcast receiving device uses the digital broadcast as a recording device.
The recording means 117 mounted on the mobile phone device 100 with a broadcast receiving function has both a built-in fixed type that cannot be removed and replaced, and a case that it can be freely removed and replaced. Form may be sufficient. Hereinafter, a case where a card-type nonvolatile memory in which the recording unit 117 can be replaced is used will be exemplified.

There are various types of broadcast programs such as sports, music, dramas, movies, news, variety, and animation, but there are some movies, dramas, and animations that cannot be understood unless you watch them. If you look only at the results, there are things that you don't have to see.
In program broadcasting such as sports, most viewers will be satisfied if only the game results are known, even if they do not continue watching from the start to the end of the game for a long time. There are many cases of dissatisfaction.
As described above, depending on the type of broadcast program, it is divided into what needs to record all broadcasts and what does not need to be recorded.
In addition, when data is broadcast at the same time as video and audio, the data plays a complementary role for video and audio. It is not always necessary to record the existing data signal in the recording means 117.
In view of the above circumstances, in the present embodiment, the recording format selection unit 116 is provided to select the format to be recorded in the recording unit 117 according to the user's desire and purpose. Needless to say, all signals can be recorded as usual.

A specific recording process will be described.
The user uses the operation unit 115 to select a channel, a recording start time and a recording end time, an object (format) to be recorded, only a video signal, only an audio signal, only a data signal, or a video signal, an audio signal, and Specify the recording format, such as any combination of data signals. The contents are stored in the recording means 117. Note that the recording start time and the recording end time can be, for example, from the time when the user specifies the start to the time when the end is specified. Further, it may be determined by selecting a program.

The control unit 112 and the recording format selection means 116 cooperate to select a channel in the tuner unit 102 in accordance with the recording format designated by the format, and a TS separation unit for the broadcast contents of the channel selected in the tuner unit 102 One of the audio signal, the video signal, and the data signal separated in 105 or a combination thereof is selected and recorded in the recording unit 117.
That is, when the user operates the operation unit 115 to select which of the video signal, the audio signal, and the data signal is recorded for the selected broadcast program, the control unit 112 detects the selection operation content. The selected content is set in the recording format selection means 116.
The recording format selection unit 116 writes the selected content (video signal, audio signal, data signal) into the recording unit 117 in units of packets, for example, in cooperation with the control unit 112. This makes it possible to record the packet unit signal of the selected type in the recording means 117.

In the present embodiment, since the signal to be recorded in the recording means 117 is a signal form as it is received (if the signal is selected, unnecessary signals are excluded), the recording processing load on the recording means 117 is small. That's it.
In addition, when a semiconductor memory such as a non-volatile memory that is generally used as the recording unit 117 is used, a large amount of current is consumed during data access. It also reduces. As a result, the battery life of the mobile phone device 100 with a broadcast receiving function is also prolonged.

Next, reproduction processing in the digital broadcast receiving apparatus will be described.
First, general processing for reproducing data recorded in the recording means 117 will be described.
In the reproduction process, the reproduction unit 118 performs the following process in cooperation with the control unit 112.
That is, the reproducing unit 118 causes the display unit 109 to display a history list of data recorded in the recording unit 117 based on a user instruction to the operation unit 115. At this time, the reproducing unit 118 displays the recording list recorded in the recording unit 117 on the display unit 109. In this display, when all the history lists cannot be displayed at once due to the screen size restriction of the display unit 109, the display is performed by scroll processing or the like.

The user selects a desired one from the list displayed on the display unit 109.
The reproducing unit 118 reads the selected data from the recording unit 117 and outputs the video signal to the video signal decoding unit 107, the audio signal to the audio signal decoding unit 106, and the data signal to the data signal processing unit 108.
As described above, signals desired by the user among the signals recorded in the recording unit 117 are output from the display unit 109 and the speaker 110.

Next, processing for selecting and reproducing a specific signal from various signals for the data written in the recording means 117 will be described.
The reproduction means 118 is an embodiment of the designation means and reproduction means of the present invention. That is, the reproduction means 118 has a filter function for designating a signal and a reproduction function for reproducing the designated signal, and each function corresponds to the designation means and the reproduction means of the present invention. ing.

As described above, the recording means 117 records the audio signal, video signal, and data signal data generated by separating the transport stream (TS) signal by TS. For example, when only the data signal is reproduced, the control unit 112 designates only the data signal, and in response to this, the reproducing unit 118 scans the signal recorded on the recording unit 117. Extract data signals only.
The specific signal may be designated by the control unit 112 instructing the reproducing unit 118 according to the user's operation on the operation unit 115, or the recorded time may be designated and the data within the range specified. It is also possible to extract only the signal.
The control unit 112 controls the extracted data signal to be displayed on the display unit 109 via the data signal processing unit 108.

3A and 3B are diagrams illustrating the processing of the reproducing unit 118 in the present embodiment, where FIG. 3A shows a data signal extraction process, and FIG. 3B shows a broadcast service display example of digital broadcasting.
FIG. 3B shows a broadcast image of a baseball broadcast program, and shows the middle of a game sent simultaneously with the area 201 for displaying a video on the display screen 200 of the display unit 109. This is an example in which the data is displayed divided into areas 202 for displaying data. In this case, the content of the data is displayed in synchronization with the progress of the program because it is complementary information for the baseball broadcast program.
Next, the operation in the case of reproducing only the data signal from the data (program) recorded in the recording means 117 will be described.
When the user performs a reproduction operation of the data (program) recorded in the recording unit 117, the reproduction unit 118 performs recording at a predetermined timing according to the progress of the program, as shown in FIG. The transport stream (TS) signal recorded in the means 117 is scanned to extract only the data signal from the video signal, audio signal, data signal, and program information. Then, the control unit 112 controls the extracted data signal to be displayed in the area 202 of the display unit 109 via the data signal processing unit 108. The area 201 may be any display such as a standby screen of a mobile phone.

  Although the case where only the data signal is extracted has been described with reference to FIG. 3, it is needless to say that the extraction of the data signal is an example, and the video signal, the audio signal, and the like can be extracted.

As described above, according to the mobile phone device with a broadcast receiving function 100 according to the present embodiment, it is possible to reproduce with low power consumption and in accordance with the user's intention.
Therefore, since only necessary signals can be designated and reproduced according to the program contents and the like, it is possible to use in consideration of the user's situation at the time of reproduction, the remaining battery level of the apparatus, and the like. Designating and reproducing the data signal is suitable when it is desired to know the result from a sports broadcast program that uses the data signal as complementary information.

Second Embodiment Next, a second embodiment of the digital broadcast receiving apparatus of the present invention will be described.
In the present embodiment, processing in the case where data written in the recording means 117 is reproduced by selecting two specific signals from various signals will be described.
That is, according to the mobile telephone device with a broadcast receiving function 100 according to the first embodiment, the case where only a single signal is extracted from the recording means 117 and reproduced is described. In the cellular phone device with a receiving function 100, for example, processing when selecting and reproducing an audio signal and a data signal as two specific signals will be described.

The recording means 117 records audio signal, video signal, and data signal data generated by separating the transport stream (TS) signal into TS. For example, when reproducing an audio signal and a data signal from these, first, the audio signal and the data signal are designated by the control unit 112, and the reproducing unit 118 is recorded by the recording unit 117 in response to this. The audio signal and the data signal are extracted by scanning the signal.
The signal may be specified by the control unit 112 instructing the reproducing unit 118 according to the user's operation on the operation unit 115, or the recorded time may be specified and the audio signal within the range specified. Data signals can also be extracted.
The control unit 112 controls so that the extracted audio signal is output from the speaker 110 via the audio signal decoding unit 106 and the extracted data signal is displayed on the display unit 109 via the data signal processing unit 108. .
At this time, since the data signal constitutes one display screen by a predetermined number of packets, the control unit 112 extracts the predetermined number of packets and obtains information for one screen. The display unit 109 is controlled to display the contents of one screen.

4A and 4B are diagrams illustrating the processing of the reproducing unit 118 according to the present embodiment, where FIG. 4A shows an audio signal and data signal extraction process, and FIG. 4B shows a broadcast service display example of digital broadcasting. .
FIG. 4B shows a broadcast image of a weather forecast program, in which video is displayed in an area 221 for displaying video and weather forecast information is displayed as text data in an area 222 for displaying data. The contents of the data in this case are not necessarily synchronized with the progress of the weather forecast program, and are independent information, so the national weather forecast information may be received at once and displayed as text data.

Next, the operation in the case of reproducing only the audio signal and the data signal from the data (program) recorded in the recording means 117 will be described.
When the user performs a reproduction operation of the data (program) recorded in the recording unit 117, the reproducing unit 118 displays the transport stream (TS) recorded in the recording unit 117 as shown in FIG. The signal is scanned to extract the audio signal and data signal from the video signal, audio signal, data signal, and program information. The extracted audio signal is output from the speaker 110 via the audio signal decoding unit 106, and the data signal is displayed in the area 222 of the display unit 109 via the data signal processing unit 108. 112 controls. As a result, the extracted data signal is displayed in the region 222 of the display unit 109 as shown in FIG.
At this time, since the data signal shown in FIG. 4C is configured to display one screen for three packets, video display is performed after extracting the data signal for three packets. 221 may be any display such as a standby screen of a mobile phone.

  In addition, although the case where the audio | voice signal and the data signal were extracted in connection with FIG. 4 was demonstrated, it cannot be overemphasized that extracting an audio | voice signal and a data signal is an example, and it can extract combining another signal. .

Thus, according to mobile telephone device 100 with a broadcast reception function according to the present embodiment, two specific signals are obtained from a plurality of signals obtained by separating the recorded transport stream (TS) signals. You can specify and play it.
Therefore, since only necessary data can be designated and reproduced according to the program content and the like, it is possible to use it in consideration of the situation of the user at the time of reproduction, the remaining battery level of the apparatus, and the like. Specifying and extracting audio signals and data signals is suitable for weather forecast programs that do not need to be synchronized with the playback content.

Third Embodiment Next, a recording unit that saves a file for each data type (for example, a folder) according to the recording unit of a mobile phone sharing the recording unit will be described as an example.
The mobile phone device with broadcast receiving function 100 according to the present embodiment records the audio signal, video signal, and data signal included in the transport stream (TS) signal as separate files, and the user later stores these files. It is intended to play by specifying individually.

Specifically, the TS separation unit 105 separates the transport stream (TS) signal into an audio signal, a video signal, and a data signal, and the control unit 112 generates a file for each separated signal. Further, the control unit 112 records the generated file in the recording unit 117.
At that time, the generated file is associated and recorded in the recording unit 117. For example, in the case of data obtained from a broadcast of a music program, a video signal file, an audio signal file, and a data signal file are recorded in association with each other.
The file recorded in the recording unit 117 can be played back individually or all related files by the user specifying the file via the operation unit 115. That is, the control unit 112 notifies the reproduction unit 118 of the file designated by the user, and in response to this, the reproduction unit 118 takes out the designated file from the recording unit 117 and reproduces it.

FIGS. 5A and 5B are diagrams illustrating the processing of the reproducing unit 118 according to the present embodiment, in which FIG. 5A shows a file generation process, and FIG. 5B shows a broadcast service display example of digital broadcasting.
FIG. 5B is an image of a broadcast of a music program. The video is displayed in the area 211 for displaying the video, and the name of the artist and the song name currently being sung in synchronization with the video in the area 212 for displaying the data. Is displayed as text data. In this case, since the data signal is complementary information of the program, it is displayed in synchronization with the progress of the music program.
Next, the process of recording in the recording means 117 from the transport stream included in the broadcast wave will be described.
In mobile telephone device 100 with a broadcast receiving function according to the present embodiment, first, as shown in FIG. 5A, TS separator 105 converts a transport stream (TS) signal into an audio signal, a video signal, a data signal, and the like. The control unit 112 generates a file for each separated signal. In the example shown in FIG. 5A, an audio signal file and a data signal file are generated.
These files are recorded in the recording unit 117 in association with each other.

  Then, when the user designates a file via the operation unit 115 later, the control unit 112 notifies the reproduction unit 118 of the file designated by the user, and the reproduction unit 118 responds from the recording unit 117 accordingly. Retrieves and plays the specified file. That is, if it is a sound, a corresponding sound is output from the speaker 110, and if it is a data file of a data broadcast, the corresponding data is displayed in the area 212 of the display unit 109.

Thus, according to mobile telephone device 100 with a broadcast receiving function according to the present embodiment, a file is generated from each of a plurality of signals obtained by separating received transport stream (TS) signals, and the user The generated files can be played back individually later.
Therefore, the user can later reproduce (view) audio signals and data signals of music program broadcasts and the like that do not necessarily require video display. Needless to say, only the audio signal file can be specified.

Fourth Embodiment In the description of the mobile telephone device 100 with a broadcast receiving function according to the first embodiment, an audio signal, a video signal, and a data signal included in a transport stream (TS) signal are recorded in the recording unit 117, respectively. Although the processing to be described has been described, a specific signal can be selected and deleted from these recorded signals. Therefore, the recording capacity of the recording means 117 can be utilized to the maximum extent.

Specifically, the erasing unit 119 is used to erase the data recorded in the recording unit 117. The erasing unit 119 performs the following processing in cooperation with the control unit 112.
That is, when the user uses the operation unit 115 to display the history list of data signals recorded in the recording unit 117 on the display unit 109, the erasing unit 119 displays the recording list recorded in the recording unit 117. Displayed on the unit 109. In this display, when all the history lists cannot be displayed at once due to the screen size restriction of the display unit 109, the display is performed by scroll processing or the like.
The user selects a signal that the user desires to erase from the list displayed on the display unit 109.
The erasing unit 119 performs a process of erasing the selected signal from the recording unit 117, and sets the erased portion as a recordable area.
The erasing unit 119 is an embodiment of the deleting unit of the present invention.

6A and 6B are diagrams for explaining the erasure process according to the present embodiment, where FIG. 6A shows the process of the erasure means 119, and FIG. 6B shows an example of a broadcast service for digital broadcasting. FIG. 6B shows a broadcast image of a news program. A video currently being described is displayed in an area 231, and a list of news broadcast in the news program is displayed in an area 232 where data is displayed. Is displayed. Note that the content of the data in this case does not necessarily need to be synchronized with the progress of the program, and may be displayed before the newscaster explains the news because it is independent information.
Such news programs often exhibit a sufficient information transmission function if there are audio signals and data signals even when there is no video signal. Therefore, the recording means 117 can be used effectively by erasing a video signal that requires a large recording capacity and opening the corresponding storage area for other purposes.
Therefore, according to mobile telephone device 100 with a broadcast receiving function according to the present embodiment, as shown in FIG. 6A, a transport stream (TS) corresponding to data (program) recorded in recording means 117 is shown. ) By selecting and erasing only the video signal from the signals, there is an advantage that a larger recording capacity can be secured.
Although it is possible to delete not only video signals but also other signals, it is most desirable for the recording means 117 to delete video signals that require a large recording area.

Even when data is not specified, data regarding information such as news that requires immediacy and information that has a time limit in validity can also be configured to be automatically deleted after a lapse of a predetermined time.
It is also possible to add a class (priority) to the contents to be recorded in the recording unit 117 and to delete a data signal of a lower class (may be a category).

Fifth Embodiment In the mobile telephone device with a broadcast receiving function 100 according to the third embodiment, an audio signal, a video signal, and a data signal included in a transport stream (TS) signal are associated with each other as a file in the recording means 117. Although recorded, these recorded files can be erased on a file-by-file basis. Thereby, the recording capacity of the recording means 117 can be utilized to the maximum extent.

Specifically, the erasing unit 119 is used to erase the file recorded in the recording unit 117. The erasing unit 119 performs the following processing in cooperation with the control unit 112.
The user causes the display unit 109 to display a history list of files recorded in the recording unit 117 using the operation unit 115. At this time, the erasing unit 119 displays the recording list recorded in the recording unit 117 on the display unit 109. In this display, when all the history lists cannot be displayed at once due to the screen size restriction of the display unit 109, the display is performed by scroll processing or the like.
The user selects a file he wishes to delete from the list displayed on the display unit 109.
The erasing unit 119 performs a process of erasing the selected file from the recording unit 117, and sets the erased portion as a recordable area.

For example, in the example of FIG. 5A shown in the third embodiment, an audio signal file and a data signal file are recorded in the recording means 117. The user designates and deletes these files. be able to. If the user determines that the data signal is unnecessary, the recording area can be released by deleting only the data signal file.
Therefore, according to the mobile phone device with a broadcast receiving function 100 according to the present embodiment, a larger recording capacity can be ensured as with the mobile phone device with a broadcast receiving function 100 according to the fifth embodiment. There is a profit.

Sixth Embodiment In the description of the first to fifth embodiments, the mobile phone device with a broadcast receiving function 100 that can perform recording, reproduction, or deletion in units of data or files has been described. Even when a plurality of video signals are recorded corresponding to multi-channel (multi-angle), data / files can be recorded, reproduced or deleted in the same manner.
That is, for multi-angle video signals, the video data for each angle can be separated as separate data, so that the video data for each angle can be reproduced / deleted.
Also, since the sub audio data can be separated from the main audio data, only the sub audio data can be reproduced / deleted.

  In carrying out the present invention, the above-described embodiments can be appropriately combined. Further, the above-described embodiment is merely an example of the present invention, and the present invention is not limited to the above-described embodiment.

FIG. 1 is a configuration diagram of a device (mobile phone device with a broadcast receiving function) when a mobile phone device and a digital broadcast receiving device are integrated as a first embodiment of a digital broadcast receiving device of the present invention. FIG. 2 is a diagram illustrating an example of a transport stream (TS) signal. FIGS. 3A and 3B are diagrams for explaining the reproduction process according to the embodiment, in which FIG. 3A shows a data extraction process, and FIGS. 3B and 3C show examples of broadcast service display of digital broadcasting. 4A and 4B are diagrams for explaining the reproduction process according to the embodiment, in which FIG. 4A shows a data extraction process, and FIGS. 4B and 4C show examples of broadcast service display of digital broadcasting. 5A and 5B are diagrams for explaining the reproduction process according to the embodiment, in which FIG. 5A shows a file generation process, and FIG. 5B shows a broadcast service display example of digital broadcasting. FIGS. 6A and 6B are diagrams for explaining the erasure process according to the embodiment. FIG. 6A shows an erasure process, and FIG. 6B shows a broadcast service display example of digital broadcasting. FIG. 7 is a configuration diagram of a broadcast receiving apparatus in the assumed prior art.

Explanation of symbols

100, 100A, 100B ... Mobile telephone device with broadcast receiving function
101: Digital broadcast receiving antenna, 102: Tuner section
103 ... demodulator 104 ... descrambler 105 ... TS separator
106: Audio signal decoding unit, 107: Video signal decoding unit
108: Data signal processing unit 109: Display unit 110: Speaker
111: Microphone (MIC), 112: Control unit
113: Mobile phone antenna, 114 ... Wireless communication unit
115: operation unit, 116: recording format selection means
117 ... Recording means, 118 ... Reproducing means, 119 ... Erasing means
126 ... Camera part 100 ... Mobile phone device with broadcast receiving function

Claims (4)

In a digital broadcast receiving apparatus configured to receive and output a stream in which a video signal, an audio signal, and a data signal are multiplexed,
Recording means for recording a video signal, an audio signal, and a data signal included in the received stream;
Designation means for designating a specific signal from each signal recorded in the recording means;
Reproduction means for reproducing only the signal designated by the designation means;
A digital broadcast receiving apparatus comprising: Separating means for separating each of the video signal, audio signal, and data signal included in the received stream,
2. The recording unit records each signal separated by the separation unit as a different file, the designation unit designates the file, and the reproduction unit reproduces the designated file. The digital broadcast receiver as described. In a digital broadcast receiving apparatus configured to receive and output a stream in which a video signal, an audio signal, and a data signal are multiplexed,
Recording means for recording a video signal, an audio signal, and a data signal included in the received stream;
Designation means for designating a specific signal from each signal recorded in the recording means;
Deleting means for deleting only the signal specified by the specifying means;
A digital broadcast receiving apparatus comprising: Separating means for separating each of the video signal, audio signal, and data signal included in the received stream,
4. The recording unit records each signal separated by the separation unit as a different file, the designation unit designates the file, and the deletion unit deletes the designated file. The digital broadcast receiver as described.

Images