Optical disc drive and methods of examining the optical disc dri

Details Optical disc drive and methods of examining the optical disc dri Optical disc drive and methods of examining the optical disc dri

1998-09-29

2000-10-31

Edun, Muhammad

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 50, 369 59, G11B 700

Patent

active

061413062

ABSTRACT:
An optical disc drive for recording and playing back a recordable-type optical disc includes a driving mechanism for rotating the optical disc, an optical pick-up for writing and reading data to and from the optical disc, signal processor for processing signals read out from the optical disc by means of the optical pick-up, a CPU for controlling the driving mechanism, the optical pick-up and the signal processor. The optical disc drive is further equipped with a detecting device for detecting an ATIP error and a counter for counting the number of ATIP errors. The optical disc drive counts the number of ATIP errors caused in a predetermined time based on the synchronization signal (SUBCODE-SYNC) produced by a clock provided in the optical disc drive after the synchronization signal (SUBCODE-SYNC) has been synchronized with a synchronization signal (ATIP-SYNC) obtained from a reference optical disc. The recording performance of the optical disc is examined based on the counted number of the detected ATIP errors.

REFERENCES:
patent: 5553042 (1996-09-01), Usui
patent: 5815475 (1998-09-01), Igarashi et al.
patent: 6034936 (2000-03-01), Ogawa et al.
patent: 6061313 (2000-05-01), Shigemori

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