Method for detecting a boundary between recorded and unrecorded

Details Method for detecting a boundary between recorded and unrecorded Method for detecting a boundary between recorded and unrecorded

1997-07-07

1999-07-06

Young, W. R.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, 369 58, G11B 7085

Patent

active

059205261

ABSTRACT:
An optical disc recording device is disclosed in which RF signals reproduced from a write-once optical disc are detected during track jump for detecting the boundary between a recorded area and an unrecorded area on the write-once optical disc. This defines a roughly defined boundary between the recorded and unrecorded areas which may be searched quickly. A more strictly defined boundary between the recorded and unrecorded areas, may be searched quickly by subsequently employing a binary search method to the roughly detected boundary.

REFERENCES:
patent: 5148418 (1992-09-01), Tsurushima
patent: 5175719 (1992-12-01), Iimura
patent: 5206850 (1993-04-01), Tezuka et al.
patent: 5216660 (1993-06-01), Iimura
patent: 5295124 (1994-03-01), Shirako
patent: 5559778 (1996-09-01), Inokuchi et al.

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