JP2008078731A - Optical disc player - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disc player for enhancing the versatility of a sub-video by performing the simultaneous reproduction of data recorded on an optical disc and external data, and the simultaneous reproduction of a plurality of data recorded on the optical disc. <P>SOLUTION: In the optical disc player 101 comprising a main video image decoding section 1021 for a main screen 111, a sub-video image decoding section 1022 for a sub-screen 112, and a video image mixing section 1023, data are inputted externally to the sub-video image decoding section 1022 and decoded, video image data processed in the main video image decoding section 1021 and the sub-video image decoding section 1022 are mixed into one datum in the video image mixing section 1023, and the main screen 111 into which the sub-screen 112 is inserted is displayed as one video image datum on a monitor 110. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical disc player capable of simultaneously reproducing a plurality of moving image data in an optical disc.

  The next generation optical disc player is a standard that can simultaneously play another video (sub video) in the main video (main video), and new optical disc players to be manufactured in the future will satisfy this standard. It is necessary to have the function to do. In this standard, data used for sub-video is assumed to be recorded on an optical disc. Conventionally, there are television receivers having a two-screen playback function for simultaneously displaying different sub-videos in the main screen (see, for example, Patent Document 1), but an optical disc player such as a DVD (Digital Versatile Disc) has two screens. None have a playback function. Nevertheless, since the sub video function has been devised as a standard for next-generation optical disc players, it is possible to realize two-screen playback with an optical disc player using this sub-video function. Can be used even if is not installed.

JP-A-9-55898

  However, in the next generation optical disc player, there is a standard for simultaneously reproducing a plurality of videos of main video and sub video on the optical disc, but the simultaneous reproduction only assumes data recorded on the optical disc. However, the data recorded on the optical disc and the external data cannot be reproduced simultaneously, and there is a problem that the versatility of the sub video is low.

  The present invention has been made in view of such circumstances, and enables not only simultaneous reproduction by a plurality of data recorded on an optical disc but also simultaneous reproduction of data recorded on an optical disc and external data. An object of the present invention is to provide an optical disc player capable of improving the versatility of sub-video.

The above object is achieved by the following configuration.
(1) In an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc, a main video decoding unit for decoding main moving image data on an optical disc on which a plurality of moving image data is recorded, and sub moving image data AV decoder means including a sub video decoding unit for decoding, a video mixing unit that mixes the main and sub videos obtained by decoding and combines them into one stream, and is input from outside the optical disc External data acquisition means for capturing external data and inputting the acquired external data to a sub-picture decoding unit of the AV decoder means; and system control means for controlling the AV decoder means and the external data acquisition means, respectively.

(2) In the optical disc player described in (1) above, the external data is moving image data with audio, moving image data, audio data, still image data, or car navigation data.

(3) In the optical disc player described in (1) or (2) above, the external data acquisition unit takes in the external data via various interfaces including ATAPI, USB, or LAN.

(4) In the optical disc player according to any one of (1) to (3), the system control means identifies what device is connected to the own optical disc player, and the external device from the identified connected device. It is determined whether or not data can be input. When it is determined that the external data can be input, the external data acquisition unit causes the sub-video decoding unit of the AV decoder unit to input the external data.

(5) In the optical disc player according to (4), when the system control unit determines that external data cannot be input from the connected device, the external data input from the connected device is converted to the sub-video. Process it so that it can be handled by the decoding unit.

(6) In the optical disc player according to any one of (1) to (5), the system control unit determines what external data is to be reproduced, and processes the determined external data. It is determined whether or not the processing capability is sufficient. If the processing capability is sufficient, the external data acquisition unit is caused to input the external data to the sub video decoding unit of the AV decoder unit. .

(7) In the optical disc player according to (6), when the system control unit determines that the processing capability for processing the external data is insufficient, the sub-video decoding unit can handle the external data. To process.

(8) In the optical disc player according to any one of (1) to (7), the system control unit determines the error when a sub moving image has an error.

(9) In the optical disc player described in (8) above, the system control means processes the external data from the error determination result of the sub moving image so that it can be handled by the sub video decoding unit.

(10) In the optical disc player according to any one of (1) to (9), the system control unit determines what external data is to be reproduced in accordance with a user input.

(11) In the optical disc player described in (10) above, the system control means processes the external data so that the sub-picture decoding unit can handle it based on the external data discrimination result.

(12) In the optical disk player according to any one of (1) to (11), the system control unit displays external data input from a connected device connected to its own optical disk player on a main screen on a monitor. Switch between display and display on the sub screen.

(13) In the optical disc player described in (12) above, the system control unit performs switching between the main screen and the sub screen in accordance with a user instruction.

(14) In the optical disc player according to any one of (1) to (13), the sub video decoding unit of the AV decoder means is configured to reproduce a sub moving image assumed in the next generation optical disc player standard. It supports codecs other than decoding processing.

(15) In the optical disk player according to (14), the sub-picture decoding unit of the AV decoder means includes MPEG2, MPEG4, DivX, XviD, ASF, NeroDigital, JPEG, JPEG2000, and TIFF. It corresponds to a codec that complies with any of the standard, QuickTime standard, MP3 standard, WMA standard, AC3 standard, MP3PRO standard, PCM standard, or OggVolbis standard.

(16) First decoding step of decoding main moving image data from an optical disc on which a plurality of moving image data is recorded, in a program used for an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc A second decoding step for decoding sub moving image data from an optical disc on which a plurality of moving image data is recorded, and mixing the main and sub videos decoded in the first and second decoding steps. A video synthesizing step combined with one stream; and an external data acquisition step of capturing external data input from the outside and passing the captured external data to the second decoding step. Let it run.

(17) The program described in (16) above was stored in a storage medium.

(18) In the update disk for updating the contents of the program, the contents of the program stored in the storage medium described in (17) are updated.

(19) An integrated circuit used in an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc, comprising the storage medium described in (17) above, and a sub-picture decoding unit of the optical disc player Is used to reproduce the data input from the external interface, and the data recorded on the optical disk and the external data are reproduced simultaneously.

(20) A first decoding step of decoding main moving image data from an optical disc on which a plurality of moving image data is recorded in a moving image reproducing method of an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc. A second decoding step of decoding sub video data from an optical disc on which a plurality of video data is recorded, and mixing the main and sub videos decoded in the first and second decoding steps. A video synthesizing step combined with one stream, and an external data obtaining step of taking in external data inputted from outside and passing the taken-out external data to the second decoding step.

  In the optical disc player described in (1) above, since data input from the outside is reproduced using the sub video decoding unit of the optical disc player, the optical disc data and the external data can be reproduced simultaneously, and the versatility of the sub video is improved. Can be planned.

  The optical disk player described in (2) can handle moving image data with sound, moving image data, sound data, still image data, or car navigation data.

  Since the optical disk player described in (3) above can cope with various interfaces including ATAPI, USB, and LAN, external data can be easily taken into the optical disk player.

  In the optical disc player described in (4) above, the connected device connected to the optical disc player is identified, and if the data (that is, external data) can be captured from the identified connected device, the external data is captured. It is possible to reproduce data from a specific connected device.

  In the optical disc player described in (5) above, when it is impossible to input data from a connected device connected to the optical disc player, processing is performed so that the data input from the connected device can be handled by the sub video decoding unit. Thus, playback according to the connected device is possible.

  In the optical disc player described in (6) above, when external data of a video with a high load applied to the processing system of the optical disc player or the like is input, the load is determined before the video is played back, and a playback method according to the load is used. Can be played.

  In the optical disc player described in (7) above, if the processing capacity of the sub video decoding unit is insufficient for the input data, the input data is processed so that it can be handled by the sub video decoding unit. It is possible to reproduce the external data. That is, it is possible to reduce the stress applied to the viewer by slowing down the processing due to insufficient performance of the optical disc player.

  In the optical disc player described in (8) above, it is possible to take a recovery measure against an error.

  In the optical disc player described in (9) above, the input data is processed so as to reduce the error from the error determination result of the sub moving image, so that the error in the sub moving image can be reduced.

  In the optical disc player described in (10) above, since the user can specify the type of external data (for example, data format), it is possible to omit the process of discriminating external data, and to shorten the time until the start of data reproduction. .

  In the optical disc player described in (11) above, the input data is processed so that it can be handled by the sub-picture decoding unit according to the type of external data, so that reproduction according to the type of external data is possible.

  In the optical disc player described in (12) above, it is possible to effectively use the data recorded in the connected device connected to the optical disc player even on the main screen.

  In the optical disc player described in (13) above, the user can arbitrarily switch between the main screen and the sub screen.

  Since the optical disk player described in the above (14) and (15) is compatible with codecs other than those specified in the next-generation optical disk player, data encoded in various standards can be decoded.

  In the program described in (16), the external data is decoded in the second decoding step, so that the optical disk data and the external data can be reproduced simultaneously, and the versatility of the sub video can be improved.

  In the storage medium described in (17) above, the present invention can be realized by software by storing the program described in (16) above.

  With the update disk described in (18) above, the software can be upgraded or rewritten.

  In the integrated circuit described in (19) above, the present invention can be realized in hardware by mounting it in a device.

  In the moving image playback method of the optical disc player described in (20) above, since the external data is decoded in the second decoding step, the optical disc data and the external data can be played back simultaneously, and the versatility of the sub video can be improved. .

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an optical disc player according to an embodiment of the present invention. In the figure, an optical disc player 101 according to the present embodiment includes a video decoder unit 102, an audio decoder unit 103, an external data acquisition unit 104 that acquires external data of video and audio, a video decoder unit 102, and an audio decoder unit. 103, a system control unit 105 that controls the external data acquisition unit 104, the peripheral LSI 140, and the like.

  The video decoder unit 102 includes a main video decoding unit 1021 for decoding video for the main screen 111 of the monitor 110 and a sub video decoding unit 1022 for decoding video for the sub screen 112 for displaying sub video. And a video mixing unit 1023 for mixing the video decoded by the main video decoding unit 1021 and the sub video decoding unit 1022 and combining them into one stream. The audio decoder unit 103 includes a main audio decoding unit 1031 for decoding audio corresponding to the video for the main screen 111 of the monitor 110, and a sub audio decoding unit for decoding audio corresponding to the video for the sub screen 112. 1032 and an audio switching unit 1033 that switches the audio from the main audio decoding unit 1031 and the audio from the sub audio decoding unit 1032 to the speaker 120.

  The external data acquisition unit 104 captures external data in various formats such as ATAPI (Attachment Packet Interface), USB (Universal Serial Bus), LAN (Local Area Network), serial, or parallel. In addition, it has a function of connecting to the Internet, and can take in external data via the Internet. The external data is, for example, moving image data, moving image data with audio, audio data, still image data, and car navigation data.

The system control unit 105 controls each unit of the optical disc player 101 and performs the following control.
Identify the connected device 150 connected to the optical disc player 101, determine whether external data can be input from the identified connected device 150, and if external data can be input, external data The acquisition unit 104 inputs external data to the sub video decoding unit 1022. Note that the peripheral LSI 140 may be included in the connection device 150.
If it is determined that external data cannot be input from the connected device 150, the external data input from the connected device 150 is processed so that the sub video decoding unit 1022 can handle it.
-Determine what external data you are going to play, determine whether you have enough processing capability to process the determined external data, and if you have enough processing capability, The data acquisition unit 104 is caused to input external data to the sub video decoding unit 1022.

If it is determined that the processing capability for processing the external data is insufficient, the external data is processed so that it can be handled by the sub video decoding unit 1022.
When the sub moving image has an error, the error is determined, and the external video is processed from the determination result so that the sub video decoding unit 1022 can handle it.
The external data to be reproduced is determined according to the user input, and the external data is processed so that it can be handled by the sub video decoding unit 1022 based on the determination result.
Switching between external data input from the connection device 150 connected to its own optical disc player is displayed on the main screen 111 or the sub screen 112 on the monitor 110.
Switching between the main screen 111 and the sub screen 112 is performed according to a user instruction.

  The sub video decoding unit 1022 of the video decoder unit 102 corresponds to a codec other than decoding processing for reproducing a sub moving image assumed in the next-generation optical disc player standard. That is, MPEG2 standard, MPEG4 standard, DivX standard, XviD standard, ASF standard, NeroDigital standard, JPEG standard, JPEG2000 standard, TIFF standard, QuickTime standard, MP3 standard, WMA standard, AC3 standard, MP3PRO standard, PCM standard or OggVolbis standard. Corresponds to a codec that conforms to either.

  Next, the operation of the optical disc player 101 having the above configuration will be described. First, in preparation for capturing video from the outside, the viewer prepares a connection device 150 that can record video, such as a semiconductor memory, a hard disk, a personal computer, etc. The video is recorded in a format such as DivX, ASF (Advanced Streaming Format). DivX is an MPEG4-based video compression / decompression codec developed by DivX Networks. ASF is a file format developed by Microsoft Corporation for integrating various data such as moving images, audio, and text as a single content and streaming (reproducing the content while receiving the data) through a network.

When the viewer views the video recorded on the connection device 150 as a sub-video, the connection device 150 is connected to the optical disc player 101 by wire or wirelessly. When the connection device 150 is connected to the optical disc player 101, the system control unit 105 determines what the connection device 150 is connected to the optical disc player 101. When it is determined that the connected device 150 connected to the optical disc player 101 is valid, the external data D _EX from the connected device 150 is transmitted to the video decoder unit 102 in the optical disc player 101 via the external data acquisition unit 104. Sent. Further, it is determined whether or not the video data recorded in the connection device 150 can be reproduced by the optical disc player 101.

When the external data D _EX is valid, the external data D _EX can be selected as the video for the sub video in addition to the video for the sub video recorded on the optical disk 130 for the sub screen 112. If the input of external data is invalid, only the video for the sub video recorded on the optical disc 130 is selected as the video for the sub screen 112. Upon receiving the external data D _EX , the system control unit 105 determines what the external data D _EX is by determining the format, data size, bit rate, etc., and the processing capability of the video decoder unit 102 Is sufficient to process the external data _DEX . When the capability for processing the external data D _EX is not sufficient, the external data D _EX is processed in accordance with the processing capability of the video decoder unit 102 to reduce the load on the video decoder unit 102. Examples of processing of the external data D _EX include, for example, when the original external data D _EX is a moving image with audio, processing to audio only data, processing to video only data, processing of data to a still image, frame For example, processing into moving image data obtained by thinning out.

The external data D _EX transmitted to the video decoder unit 102 in the optical disc player 101 is decoded by the sub video decoding unit 1022. Further, decoding the main video decoding unit 1021 for the main screen 111 also recorded video in the same manner and the external data D _EX on the optical disc 130 is performed. The video data processed by the main video decoding unit 1021 and the sub video decoding unit 1022 are merged into one data by the video mixing unit 1023, and are displayed on the monitor 110 as one image data in which the sub video is inserted into the main screen 111. Entered.

  Note that the display screen of the main screen 111 and the sub screen 112 can be switched by a remote control operation or the like. As a video data recording source, not only a peripheral device connected to the video decoder unit 102 in the optical disc player 101 from the outside but also a peripheral LSI 140 built in the optical disc player 101 may be used.

In addition, if the external data D _EX is valid and an error occurs such that the sub video image recorded on the optical disk 130 cannot be displayed for some reason, only the sub video image recorded on the optical disk 130 is displayed. If it cannot be displayed as a sub video, there is a demerit that the sub video function cannot be used. In order to avoid this problem, when the optical disc player 101 detects an error, it displays the external data D _EX as a sub video instead.

  Further, when used as an in-vehicle optical disc player 101, both a car navigation screen and a screen related to car audio can be displayed simultaneously. Thereby, the stress of the user accompanying screen switching can be reduced. For example, if you want to enjoy music on the optical disc player 101 while displaying the navigation screen, if you display the information about music as a sub-video as necessary while always displaying the navigation screen, the content can be displayed without interrupting the navigation. It is possible to enjoy. Conversely, if it is desired to check the position from time to time while always displaying information about music, the navigation screen can be popped up as a sub-video.

If the external data D _EX includes audio data or the audio data itself, the audio data is decoded by the audio decoder unit 103 in the optical disc player 101. Similarly, the audio data recorded on the optical disc player 130 is also decoded by the audio decoder unit 103. When outputting the main audio, the output of the main audio decoding unit 1031 is selected by the audio switching unit 1033, and when outputting the sub audio, the output of the sub audio decoding unit 1032 is selected by the audio switching unit 1033. Are input to the speaker 120.

As described above, according to the optical disc player 101 of the present embodiment, data input from the outside is reproduced using the sub-picture decoding unit 1022 of the optical disc player 101, so that the data on the optical disc 130 and the external data D _EX are reproduced simultaneously. This makes it possible to improve the versatility of sub-video. Thus, by enabling external data as a sub-video function, it is possible to display a viewer's favorite video as a sub-video as if it were a two-screen display function of a television receiver. Thus, an equivalent to the two-screen display function of the television receiver can be used.

  Note that each functional block such as the peripheral LSI 140, the video decoder unit 102, and the system control unit 105 can be realized as an LSI that is typically an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.

Further, the function of the optical disc player 101 of the present embodiment can be realized by a program, and the following characteristic steps are listed.
A first decoding step for decoding main moving image data from an optical disc on which a plurality of moving image data is recorded; a second decoding step for decoding sub moving image data from an optical disc on which a plurality of moving image data is recorded; 1. Video composition step of mixing the main and sub videos decoded in the second decoding step and combining them into one stream. ・ External data input from the outside is fetched, and the fetched external data is second decoded. Data acquisition step passed to the conversion step

  By writing the program in a storage medium such as an EEPROM, control using a computer becomes possible. In addition, by preparing an update disk in which an update program for upgrading the version of the program is prepared, the version can be upgraded or rewritten.

  INDUSTRIAL APPLICABILITY The present invention has an effect that not only simultaneous reproduction by a plurality of data recorded on an optical disc but also data recorded on the optical disc and external data can be reproduced simultaneously, thereby improving the versatility of sub-video. It can be applied to an optical disc player such as a DVD.

1 is a block diagram showing a schematic configuration of an optical disc player according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Optical disk player 102 Video decoder part 103 Audio | voice decoder part 104 External data acquisition part 105 System control part 110 Monitor 111 Main screen 112 Sub screen 120 Speaker 130 Optical disk 140 Peripheral LSI
150 connected device 1021 main video decoding unit 1022 sub video decoding unit 1023 video mixing unit 1031 main audio decoding unit 1032 sub audio decoding unit 1033 audio switching unit

Claims (20)

In an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc,
A main video decoding unit that decodes the main video data of an optical disc on which a plurality of video data is recorded and a sub video decoding unit that decodes the sub video data are mixed, and the main and sub videos obtained by decoding are mixed. AV decoder means comprising a video mixing unit to be combined into one stream,
External data acquisition means for capturing external data input from the outside other than the optical disk, and inputting the captured external data to the sub video decoding unit of the AV decoder means;
System control means for controlling the AV decoder means and the external data acquisition means,
An optical disc player comprising:   2. The optical disc player according to claim 1, wherein the external data is moving image data with sound, moving image data, sound data, still image data, or car navigation data.   The optical disk player according to claim 1, wherein the external data acquisition unit takes in the external data via various interfaces including ATAPI, USB, or LAN.   The system control means identifies the device connected to its own optical disc player, determines whether external data can be input from the identified connected device, and determines that the external data can be input. 4. The optical disc player according to claim 1, wherein the external data acquisition unit causes the external video acquisition unit to input the external data to a sub-picture decoding unit of the AV decoder unit.   The system control unit according to claim 4, wherein when it is determined that external data cannot be input from the connected device, the system control unit processes the external data input from the connected device so that the sub video decoding unit can handle the external data. Optical disc player.   The system control means determines what external data is to be reproduced, determines whether it has sufficient processing capability to process the determined external data, and has sufficient processing capability. 6. The optical disc player according to claim 1, wherein the external data acquisition unit causes the external data acquisition unit to input the external data to a sub video decoding unit of the AV decoder unit.   7. The optical disc player according to claim 6, wherein the system control means processes the external data so that the sub-video decoding unit can handle the external data when it is determined that the processing capability for processing the external data is insufficient.   8. The optical disc player according to claim 1, wherein the system control means discriminates the error when an error occurs in the sub moving image.   9. The optical disc player according to claim 8, wherein the system control means processes the external data so that the sub video decoding unit can handle the error determination result of the sub moving image.   10. The optical disc player according to claim 1, wherein the system control means determines what external data is to be reproduced in accordance with a user input.   11. The optical disc player according to claim 10, wherein the system control means processes the external data so that the sub-video decoding unit can handle the external data based on a determination result of the external data.   12. The system control unit according to claim 1, wherein the system control unit switches whether to display external data input from a connected device connected to its own optical disc player on a main screen or a sub screen on a monitor. An optical disc player according to any one of the above.   13. The optical disc player according to claim 12, wherein the system control means switches between a main screen and a sub screen according to a user instruction.   14. The sub video decoding unit of the AV decoder means corresponds to a codec other than a decoding process for reproducing a sub moving image assumed in a next-generation optical disc player standard. Optical disc player.   The sub video decoding unit of the AV decoder means includes MPEG2 standard, MPEG4 standard, DivX standard, XviD standard, ASF standard, NeroDigital standard, JPEG standard, JPEG2000 standard, TIFF standard, QuickTime standard, MP3 standard, WMA standard, AC3 standard, The optical disc player according to claim 14, which corresponds to a codec compliant with any of the MP3PRO standard, the PCM standard, or the OggVolbis standard. In a program used for an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc,
A first decoding step of decoding main moving image data from an optical disc on which a plurality of moving image data is recorded;
A second decoding step of decoding the sub moving image data from the optical disc on which the plurality of moving image data is recorded;
A video synthesis step of mixing the main and sub videos decoded in the first and second decoding steps and combining them into one stream;
An external data acquisition step of capturing external data input from the outside and passing the captured external data to the second decryption step;
A program for causing a computer to execute the steps.   A storage medium storing the program according to claim 16.   An update disk for updating contents of a program stored in the storage medium according to claim 17. In an integrated circuit used in an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc,
18. A recording medium comprising the storage medium according to claim 17, wherein a data input from an external interface is reproduced using a sub-picture decoding unit of the optical disk player, and the data recorded on the optical disk and the external data are simultaneously recorded. An integrated circuit that performs regeneration. In a moving image reproduction method of an optical disc player capable of simultaneously reproducing a plurality of moving image data recorded on an optical disc,
A first decoding step of decoding main video data from an optical disc on which a plurality of video data is recorded;
A second decoding step of decoding sub moving image data from an optical disc on which a plurality of moving image data is recorded;
A video synthesizing step of mixing the main and sub videos decoded in the first and second decoding steps and combining them into one stream;
An external data acquisition step of fetching external data input from the outside and passing the fetched external data to the second decryption step;
A method for reproducing a moving image of an optical disc player comprising:

Images