Optical disc drive having accessing from a current position with

Details Optical disc drive having accessing from a current position with Optical disc drive having accessing from a current position with

1996-10-09

1998-04-07

Huber, Paul W.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 58, 360 7814, G11B 1722, G11B 5596

Patent

active

057372845

ABSTRACT:
In an optical disc drive, a rapid access to a target track within a program area is enabled in case of accidental reentry of an optical pick-up into a lead-in area during an access operation. Upon mounting a compact disc, a maximum relative address TLm within the lead-in area is detected and stored in a memory. If it is found during an accessing operation that a current position lies within the lead-in area, a total number of tracks interposed between the current position and the target position within the program area can be obtained based on a current address, the maximum relative address and a target address of the target position, thereby achieving a high speed accessing operation.

REFERENCES:
patent: 4496993 (1985-01-01), Sugiyama et al.
patent: 5122999 (1992-06-01), Kimura et al.

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