Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2007-05-08
2007-05-08
Wellington, Andrea (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S044330
Reexamination Certificate
active
09787096
ABSTRACT:
A method and a DVR video recorder for recording real time video signals on a DVR disc, include detecting large spot disc defects. The integrity of predetermined test tracks is assessed on the basis of a tracking signal. When a defective test track is found, the proximity of the test track is examined further. If the number of affected tracks appears to be small, recording in these tracks is allowed. If the number of affected tracks appears to be large, these tracks are entered in a defect list, which may be recorded on the disc. During recording, the tracks appearing in the defect list are skipped.
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Translation of Tsuchiya et al., Defect Inspection Device for a Disc—Shaped Optical Recording Medium, JP-01253638, Published Oct. 9, 1989.
Agustin Peter Vincent
Koninklijke Philips Electronics , N.V.
Wellington Andrea
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