Tracking control apparatus using pilot signals and position dete

Details Tracking control apparatus using pilot signals and position dete Tracking control apparatus using pilot signals and position dete

1986-10-06

1988-07-05

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 18, G11B 5584

Patent

active

047558938

ABSTRACT:
In a tracking control apparatus for controlling tracking alignment of a rotary head with respect to record tracks appearing in succession on a record medium and in each of which there are recorded, at predetermined positions varying from track to track in accordance with a predetermined repeating sequence, pilot signals for controlling tracking and position detecting signals having different recorded length and which identify the positions of the pilot signals. An identifying signal for identifying the recorded length of a position detecting signal recorded in a track being traced by the rotary head is generated from the output of the rotary head, and a sampling signal is generated in response to the identifying signal for sampling a pilot signal reproduced as cross-talk from an adjacent track so as to reduce the pull-in time of the tracking alignment operation.

REFERENCES:
patent: 4656539 (1987-04-01), Sugiki et al.

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