Apparatus and method for accessing multiple recording layers of

Details Apparatus and method for accessing multiple recording layers of Apparatus and method for accessing multiple recording layers of

1997-10-27

1999-07-06

Dinh, Tan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 94, G11B 1722

Patent

active

059205270

ABSTRACT:
When reproducing a disk having a plurality of recording layers read from one face, the reading out position is refocused from the current track position in a current recording layer to the target track position in the target recording layer. The reading out position deviates appreciably during such refocusing of the reading out position, and spurt processing is performed as a result. To avoid lengthy spurt processing, the reading out position is first moved from a first recording layer to a second recording layer in which is recorded the data to be read next. Thereafter, the reading out position is moved along the second recording layer to a position where such data is located, thereby avoiding additional spurt processing.

REFERENCES:
patent: 4450553 (1984-05-01), Holster et al.
patent: 5373499 (1994-12-01), Imaino et al.
patent: 5485452 (1996-01-01), Maeda
patent: 5499231 (1996-03-01), Fennema et al.
patent: 5586107 (1996-12-01), Best et al.
patent: 5696743 (1997-12-01), Kawasaki

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