Tonearm control system

Details Tonearm control system Tonearm control system

1979-02-26

1981-04-07

Haroian, Harry N.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 41, 369216, 369219, 369215, G11B 306

Patent

active

042601622

ABSTRACT:
A tonearm control device in which tonearm position is detected by counting pulses generated in response to the reversible electric motor output used for providing horizontal tonearm movement. A sensor is employed to detect non-recorded portions between recorded bands and also the initial band. Output pulses are counted in an up counter of a RAM and the counter is compared with a memory stored selection order. When coincidence occurs reproduction of that band is achieved. The counter is controlled to inhibit counting over areas previously scanned. Hence, it is possible to play bands out of order once the portions to be played are scanned.

REFERENCES:
patent: 3662363 (1972-05-01), Chertok
patent: 3937903 (1976-02-01), Osann
patent: 4114893 (1978-09-01), Leach et al.
patent: 4135086 (1979-01-01), Baba

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