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Data processing device

A data processing device and data technology, applied in digital signal formatting, digital recording/reproduction, television, etc.

Inactive Publication Date: 2005-11-16
GK BRIDGE 1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the data of the audio frame 25c stored in VOBU#(i+1) that should be reproduced synchronously with the video frame 24c is not read out, and no audio is reproduced.

Method used

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Experimental program
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Embodiment approach 1

[0061] Next, the structure of the data processing device according to the present embodiment will be described, and the data structure of the data stream related to the processing of the data processing device will be described. Next, the recording operation and reproduction operation performed by the data processing device will be described. Also, in this specification, an MPEG2 program stream (VR standard stream) conforming to the DVD video recording standard (VR standard) will be described as an example of a data stream.

[0062] image 3 A block diagram showing the function of the data processing device 30 . The data processing device 30 has a recording function, and records the VR standard stream 10 in real time on a recording medium represented by a phase-change optical disc 131 such as a DVD-RAM disc or a Blu-ray Disc (BD). The data processing device 30 also has a reproduction function of decoding and reproducing the recorded VR standard stream 10 by reading. However...

Embodiment approach 2

[0113] According to Embodiment 1, assuming that a corresponding video stream and audio stream are respectively stored in the VR standard stream 10, among the audio data, a copy of the data (separately stored data) that is not stored in the same VOBU as the video data is stored in the subsequent VOBU In the video data (in the video packet).

[0114] According to this embodiment, each corresponding video stream and audio stream plus other audio streams copying the data of the audio stream are also recorded. Next, the recording operation of this embodiment will be specifically described.

[0115] Figure 9 Indicates the relationship among VOBUs, video streams, and audio streams according to this embodiment. Although this VR standard stream 10 is specified as one MPEG file as in the first embodiment, two audio streams different from those in the first embodiment are multiplexed. Now, assume that the audio stream corresponding to the video stream is "audio stream #0". In audio st...

Embodiment approach 3

[0129] In Embodiment 1, separate storage data is stored in the user data area 42 within the video pack.

[0130] In the present embodiment, the data processing device 30 records the separately stored data as file data different from the MPEG file defining the VR standard stream 10 .

[0131] Figure 10 Indicates the relationship among VOBUs, video streams, and audio streams according to this embodiment. When VOBU #i is generated, PS combining unit 104 recognizes the separately stored data related to the VOBU and generates audio data #i in which the separately stored data is copied. The PS combining unit 104 physically alternately records the audio data and each VOBU constituting the VR standard stream 10 . Each audio data and each VOBU are recorded as an audio file and an MPEG file, respectively. PS combining section 104 interleaves audio data #i immediately after VOBU #i.

[0132] On the other hand, when reproducing based on the playlist, even when the playlist designates...

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Abstract

A data processing device includes: a signal input section for inputting a video signal and an audio signal; a compression section for compressing / coding the video signal and the audio signal and generating video data and audio data; a stream assembling section for generating a plurality of packets by dividing the video data and the audio data, generating a plurality of data units obtained by multiplexing the video packets associated with the video data and the audio packets associated with the audio data, and generating a data stream containing a plurality of data units; and a recording section for recording the data stream onto a recording medium. The stream assembling section decides the video packet and the audio packet to be contained in the data unit at least according to the video reproduction time. When all of the audio data corresponding to the video data stored in a predetermined data unit is not contained in the predetermined data unit, among the audio data, at least partial audio data not contained is copied as copy data, which is put in the data stream.

Description

technical field [0001] The present invention relates to a method and apparatus for real-time recording of content including video and audio. Background technique [0002] Various data streams for compressing and encoding video (picture) signals and audio (sound) signals at low bit rates are standardized. As an example of such a data stream, a system stream of the MPEG2 system standard (ISO / IEC 13818-1) is known. System streams include program stream (PS), transport stream (TS) and PES stream. [0003] In recent years, optical discs such as phase-change optical discs and MOs are attracting attention as recording media for recording data streams instead of magnetic tapes. Now, as a standard for recording and editing content data streams in a phase-change optical disc (such as DVD) in real time, the DVD Video Recording Standard (hereinafter referred to as "VR standard") (DVD Specifications for Re-writable / Re- recordable Discs Part3VIDEO RECORDING VERSION 1.0 September 1999)....

Claims

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Application Information

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IPC IPC(8): H04N5/93
Inventor 伊藤正纪冈内理中村正
Owner GK BRIDGE 1
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