Information recording medium, information reproducing apparatus, information reproducing method and information recording method

a technology of information recording and reproducing apparatus, applied in the direction of instruments, recording signal processing, bridges, etc., can solve problems such as substantial capacity reduction, and achieve the effect of easy recording and reproducing information properly

Inactive Publication Date: 2005-09-29
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] In view of the above description, the present invention has its object to provide an information recording medium, an information reproducin

Problems solved by technology

In the art disclosed in Patent document 1, the size of the test write area (test area) canno

Method used

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  • Information recording medium, information reproducing apparatus, information reproducing method and information recording method
  • Information recording medium, information reproducing apparatus, information reproducing method and information recording method
  • Information recording medium, information reproducing apparatus, information reproducing method and information recording method

Examples

Experimental program
Comparison scheme
Effect test

case 1

[0433] The next code word starts with “1b”, or the next sync code is SY0 to SY2 of State 0.

case 2

[0434] The next code word starts with “000b”, or the next sync code is SY3 of State 0.

case 3

[0435] The next code word starts with “01b”, “001b” and “0001b”, or the next sync code is SY0 to SY3 of State 1 and 2.

[0436] The pattern content of the reference code recorded in the reference code recording zone RCZ shown in FIG. 21 will be explained in detail.

[0437] In the current DVD, the “8 / 16 modulation” method for converting 8-bit data into 16 channel bits is adopted as the modulation method, and the repetition pattern of “00100000100000010010000010000001” is used as the reference code pattern as a channel bit string which is recorded in the information storage medium after modulation.

[0438] As compared with this, in this embodiment, the ETM modulation for modulating 8-bit data to 12 channel bits is used, the run length constraint of RLL (1, 10) is performed, and the PRML method is used for signal reproduction from the data lead-in area DTLDI, the data area DTA, the data lead-out area DTLDO and the middle area MDA. Accordingly, it is necessary to set the optimal pattern of ...

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Abstract

An information recording medium includes a user information storage area which stores user information, a test write area which is extendable and for test write of information, a spare area which is extendable and capable of alternatively storing user information, and a recording position management information area including recordable range information expressing recordable ranges in the aforesaid test write area and the aforesaid spare area. The information recording medium, an information reproducing apparatus, an information reproducing method and an information recording method which make it easy to record and reproduce information properly are provided.

Description

CROSS-REFERENCE TO THE INVENTION [0001] This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2004-092864, filed on Mar. 26, 2004; the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates to an information recording medium, an information reproducing apparatus, an information reproducing method and an information recording method. [0004] 2. Description of the Related Art [0005] An optical disk is used as an information recording medium for recording and reproducing information. [0006] An art of increasing a total number of test write area (test area) in proportion to an increase of optical disk capacity is disclosed (See Patent document 1: Japanese Patent Laid-open Application No. 2001-273637). Namely, a test write area is disposed in an inner peripheral position, and its extension scaling factor is discretely set. Then, an S...

Claims

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Application Information

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IPC IPC(8): G11B20/12G11B7/00G11B7/004G11B7/0045G11B7/005G11B7/007G11B20/10
CPCG11B7/00458G11B2220/2537G11B7/00736G11B7/00745G11B7/261G11B20/10009G11B20/10055G11B20/1012G11B20/1217G11B20/1426G11B20/1833G11B2007/0013G11B2020/122G11B2020/1222G11B2020/1239G11B2020/1244G11B2020/1245G11B2020/1275G11B2020/1277G11B2020/1278G11B2020/1287G11B2020/1457G11B2220/21G11B2220/216G11B2220/237G11B7/0053E01D19/045
Inventor ANDO, HIDEOKASHIHARA, YUTAKAOGAWA, AKIHITOTAKAHASHI, HIDEKI
Owner KK TOSHIBA
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