Track access device and tracking control device

Details Track access device and tracking control device Track access device and tracking control device

1992-09-22

1993-12-07

Psitos, Aristotelis

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, 369 4429, 369 58, 369124, G11B 700

Patent

active

052688836

ABSTRACT:
A data recording/reproducing device has a pickup for recording/reproducing information on disk which has tracks formed on a recording area and a ROM area. A track access device for moving the pickup from a starting track at which the pickup is presently located to a target track includes a moving arrangement for moving the pickup in a direction crossing tracks, a tracking error signal generator for generating an analog signal representing the crossing of the tracks by the pickup, and position detector for detecting the position of the pickup in either one of the recording and ROM areas. Also, for processing the tracking error signal, an amplifier, an offset adder and hysteresis comparator are provided, each having differing operating parameters when the pickup is located in the recording area and then when it is located in the ROM area.

REFERENCES:
patent: 4059841 (1977-11-01), Bricot et al.
patent: 4106058 (1978-08-01), Romeas et al.
patent: 4332022 (1982-05-01), Ceshkovsky et al.
patent: 4866688 (1989-09-01), Ohtake et al.
patent: 4989190 (1991-01-01), Kurde et al.

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