Information recording medium, apparatus and method for recording or reproducing recording medium

A technology for recording media and time information, which is applied in the field of multimedia data recording media and devices for recording or reproducing the media, and can solve problems such as difficulty in effectively utilizing random access functions, etc.

Inactive Publication Date: 2005-11-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to say that the random access function with the best DVD recorder performance can be effectively utilized

Method used

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  • Information recording medium, apparatus and method for recording or reproducing recording medium
  • Information recording medium, apparatus and method for recording or reproducing recording medium
  • Information recording medium, apparatus and method for recording or reproducing recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0103] First, the logical structure of the DVD_RAM ​​will be explained with reference to FIG. 1 . Figure 1 shows the actual sector addresses on the disc and the data structures on the disc that can be seen by the file system.

[0104] At the head of the actual sector address there is a lead-in groove area in which a reference signal necessary for stable servo, an identification signal for identifying other media, etc. are recorded. A data area is connected to the lead-in slot area. Log logically available data at this location. Finally, the lead-out slot area is provided, which has the same reference signal as the lead-in slot area and so on.

[0105] Management information of the file system called volume information is recorded at the head of the data area. Since the file system is not directly related to the content of this application, this part of the content is omitted. The data in the disc can be processed into a directory or file as shown in FIG. 1 through the file...

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Abstract

An information recording medium suitable for an optical disc such as DVD, which is capable of reading quickly the recording time information of the video data for displaying on the menu. The recording medium stores management information (RTR.IFO) for each stream data. The management information includes a recording time information (VOB_REC_TM) that has a date and time at which the head video frame of the stream data is recorded. The management information also has an error information (VOB_REC_TM_SUB) indicative of error or fraction of the recording time information which indicates a time less than 1 second and is generated on edit operations including partial deletion.

Description

technical field [0001] The present invention relates to an information recording medium like an optical disc capable of being read or written, and more particularly, to a recording medium in which multimedia data including movie data is stored, and an apparatus and method for recording or reproducing the same. Background technique [0002] In the field of writable optical discs having an upper limit of about 650 MB, a phase change type optical disc DVD-RAM with a capacity of several GB has appeared. In addition, in addition to MPEG (MPEG2), an encoding standard for digital AV data that is actually used, DVD-RAM is also expected as a recording and reproducing medium in the AV field and computer applications. In other words, the DVD-RAM is expected to expand as a medium to replace the magnetic tape of the general type AV recording medium. [0003] In recent years, high-density writable optical discs have been developed, whereby it is possible to record video data as well as c...

Claims

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Application Information

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IPC IPC(8): G11B20/12G11B27/034G11B27/10G11B27/32G11B27/34H04N5/85H04N9/804H04N9/806
CPCH04N5/85G11B2220/2575G11B2020/00079G11B27/34G11B27/329G11B27/105H04N9/8063G11B2220/2562H04N9/8042G11B2220/216G11B27/034G11B20/1217G11B27/3081G11B2220/2537G11B2020/1265
Inventor 冈田智之杉本纪子村濑薰津贺一宏
Owner PANASONIC CORP
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