Data record medium, data recording method and appts. and data transmitting method and appts.

A technology of a data transmission device and a data transmission method, applied in the directions of data recording, digital recording/reproducing, record carrier type, etc., can solve the problem of inability to perform correct decoding, the length of the header is not constant, and it is impossible to detect the start of the data packet. Issues such as location or the PES packet information

Inactive Publication Date: 2003-12-24
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, if the interpolation byte of the group header is used, the length of the header is not constant, and the following problems arise: the start position of the packet and the information of the PES packet cannot be easily detected
[0015] As mentioned above, interpolating the group headers creates the following problem: the headers are set to variable length, so based on the length from the start of a group, it is impossible to detect the start of the packet or the Describe the PES packet information
However, if the PES header of the stuffing packet is encrypted, the starting position and length of the stuffing packet may not be clear, and correct decoding may not be possible

Method used

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  • Data record medium, data recording method and appts. and data transmitting method and appts.
  • Data record medium, data recording method and appts. and data transmitting method and appts.
  • Data record medium, data recording method and appts. and data transmitting method and appts.

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Embodiment Construction

[0029] An embodiment of the present invention will be described below with reference to the accompanying drawings. The present invention is applicable to recording / playing content data on / from an optical disc such as a CD (Compact Disc) 2 .

[0030] FIG. 1 shows the appearance structure of a CD2 optical disc 1 to which the present invention can be applied. The CD2 is similar to a common CD, with a diameter of, for example, 120 mm. It is also possible to use a disc with a diameter of 8 mm as a so-called single CD.

[0031] CD2 has been developed in consideration of compatibility between existing CD players and personal computers. According to the CD2 optical disk 1 as described above, as shown in FIG. 1, a center hole is formed at the center, an area AR1 is formed on the inner edge side, and an area AR2 is formed on the outer edge side. A mirror image portion M1 is formed between the inner peripheral side area AR1 and the outer peripheral side area AR2. This mirror portion ...

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Abstract

For recording encoded data on a record medium divided into sectors and accessible sector by sector by dividing the data into predetermined lengths creating packets each containing a predetermined length of data and a header added, and creating a pack containing the packets and another header added, when stuffing is necessary, stuffing data is inserted into the last portion of the data area of a packet. This operation makes it possible to fix the length of the pack header. Since it is unnecessary to provide a padding packet, there occurs no encryption of a PES header or no problem in encryption.

Description

technical field [0001] The present invention relates to a recording medium that is divided into sectors of a predetermined length and can be accessed based on the sector unit, a data recording method and apparatus for recording content data on the recording medium, and a data transmission method and device. Background technique [0002] In recent years, the development of the optical disc as a large-capacity recording medium has made great progress. For example, a CD (Compact Disc) for recording music information, a CD-ROM for recording computer data, a DVD (Digital Versatile Disc or Digital Video Disc) for processing video information, etc. are known. [0003] The discs mentioned here are read-only discs. In recent years, optical discs capable of rewriting data or rewritable data, such as CD-R (CD-Recordable) discs or CD-RW (CD-Rewritable) discs, etc., have been put into use. In addition, the development of various optical discs, such as double-density CDs with increased...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/92G11B20/10G11B20/12G11B27/034G11B27/10G11B27/30H04N5/85H04N5/913H04N5/928H04N9/804H04N9/806
CPCG11B20/0021H04N5/85H04N2005/91364G11B27/105G11B2020/00057G11B2020/00014H04N9/8063G11B2020/00043G11B27/034H04N5/913G11B2220/2545G11B2220/213G11B20/00507G11B2020/10546G11B20/00333G11B20/00557G11B27/3027H04N9/8042G11B20/12
Inventor 佐古曜一郎亨德里库斯·M·维尔特曼古川俊介猪口达也
Owner SONY CORP
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