Optical recording medium having condition management area for managing the recording condition of management information

Patent metadata

Field	Value
Publication number	US-9966097-B2
Application number	US-201715475693-A
Country	US
Kind code	B2
Filing date	Mar 31, 2017
Priority date	May 20, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.

First claim

What is claimed is:

1. A write-once information recording medium comprising one or more recording layers,
each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed, and
each of the recording layers including a management information area for recording management information and a user data area for recording user data,
wherein the management information area comprises recording condition management information that manages a recording condition of the management information.

2. The information recording medium according to claim 1 , wherein
the recording condition management information comprises positional information capable of identifying a position of each of the blocks which is unrecorded due to failure in recording in the management information area, and
the recording condition management information is recorded only on one of the recording tracks of the land track and the groove track.

3. The information recording medium according to claim 1 , wherein
the management information area further comprises a defect list that manages information regarding a defective block in the user data area,
the defect list comprises positional information on the defective block and type information that indicates a type of the defective block, and
the type information indicates whether the defective block is an unrecorded defect that comprises an unrecorded section.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Takahashi Yoshihisa
• Yoshimi Akihito
• Takauchi Kenji
• Hino Yasumori
• Ito Motoshi

Classifications

• G11B7/00718

  Groove and land recording, i.e. user data recorded both in the grooves and on the lands · CPC title

• G11B7/004

  Recording, reproducing or erasing methods; Read, write or erase circuits therefor {(magneto-optical systems G11B11/105)} · CPC title

• G11B2020/1238

  track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located · CPC title

• G11B7/00375 Primary

  arrangements for detection of physical defects, e.g. of recording layer · CPC title

• G11B7/00745

  Sectoring or header formats within a track (formats in general G11B20/12) · CPC title