Optical record carrier, drive unit, data updating method and...

Details Optical record carrier, drive unit, data updating method and... Optical record carrier, drive unit, data updating method and...

2006-10-24

2006-10-24

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275400, C369S111000

Reexamination Certificate

active

07126906

ABSTRACT:
A disc-shaped optical record carrier includes a first area having a spiral track extending in a first direction from an inner side on the disc, and a second area having a spiral track extending in a second direction opposite to the first direction, from an outer side on the disc located on the same plane as the first area on the disc, wherein one of the first and second areas is assigned a recordable area and the other is assigned a read only area.

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Patent Office of the People's Republic of China, Office Action dated Sep. 30, 2005.

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