Track crossing method using dual counters

Details Track crossing method using dual counters Track crossing method using dual counters

1992-04-21

1994-05-17

Pascal, Robert J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, G11B 700

Patent

active

053134400

ABSTRACT:
A system for controlling the number of data tracks crossed by the tracking head of a recording/playback device as the tracking head moves in a desired direction over a recording medium includes a counter having n output terminals. The counter is initially set to a count representative of the desired number of data tracks to be crossed as the tracking head moves in the desired direction. An further counter, also having n output terminals individually corresponding to the output terminals of the counter, is set to a predetermined count. Counting pulses are provided to the counter when the tracking head moves in the desired direction and to the further counter when the tracking head moves in a direction opposite from the desired direction. The output terminals are compared and a stop signal is generated when all terminals of both counters show that both counters are in the same state.

REFERENCES:
patent: 3956766 (1976-05-01), Hanson et al.
patent: 4484319 (1984-11-01), Koishi et al.
patent: 5164646 (1992-11-01), Tawaragi et al.

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