Programmable record changer

Details Programmable record changer Programmable record changer

1977-11-18

1979-09-04

Haroian, Harry N.

Undertaking

274 9RA, G11B 300

Patent

active

041666216

ABSTRACT:
A programmable phonograph record changer which provides automatic sound track selection for each of a plurality of records played sequentially by the record changer. The record changer includes an electro-optic scanner mounted on the pickup arm for sensing the land areas located between the various sound tracks of a disc-type record. An auxiliary tone arm lift and sweep mechanism is controlled by a digital logic system connected to the electro-optic scanner to drive the tone arm across various bands which the user does not want to be reproduced. The logic system includes a programmable memory which stores the preselected sound tracks of a sequence of records which the user intends to be reproduced.

REFERENCES:
patent: 1489436 (1924-04-01), Hess
patent: 2031074 (1936-02-01), Scheibell
patent: 2192360 (1940-03-01), Mann
patent: 2282940 (1942-05-01), Clements et al.
patent: 2536892 (1951-01-01), Sinnett et al.
patent: 2949311 (1960-08-01), Machts et al.
patent: 2952464 (1960-09-01), Stimler
patent: 3272514 (1966-09-01), Heyerdahl
patent: 3511509 (1970-05-01), Firestone
patent: 3563554 (1971-02-01), Hess

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