Recording medium, recording device, reproduction device,...

Details Recording medium, recording device, reproduction device,... Recording medium, recording device, reproduction device,...

2007-04-10

2007-04-10

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

By medium defect indicative control signal

C369S053170, C369S059250

Reexamination Certificate

active

10513971

ABSTRACT:
The present invention enhances the usability of a write-once recording medium having a plurality of recording layers. The write-once recording medium has a plurality of recording layers each including a regular recording reproduction area, an alternate area, a first alternate-address management information area and a second alternate-address management information area (a TDMA). In addition, written unwritten state indication information (a space bitmap) is recorded therein. Typically, the written unwritten state indication information is recorded in the second alternate-address management information area. By additionally recording alternate-address management information related to an alternate-address process in the second alternate-address management information area, the second alternate-address management information area can be used as an area for implementing renewal of the alternate-address management information. In addition, for every data unit (each cluster) on each of the recording layers on the write-once recording medium, written unwritten state indication information is used as information indicating whether or not data has been written into the data unit. On top of that, the second alternate-address management information areas (TDMAs), which are each provided on one of recording layers, are used sequentially one after another each as an area for updating alternate-address management information and written unwritten state indication information.

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