Record carrier, method of producing the record carrier and metho

Details Record carrier, method of producing the record carrier and metho Record carrier, method of producing the record carrier and metho

1974-01-28

1976-02-03

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

1791004ST, 17910041K, 274 46R, 346 1, 346 77R, H04N 900, G11B 300, G11B 370

Patent

active

039368670

ABSTRACT:
A method of producing a record carrier with stored signals thereon and the record made thereby. The method comprises applying to a flexible record carrier hill and dale undulations which correspond to a broadband signal in the form of a frequency modulated carrier frequency oscillation, further applying at least one further signal of lower frequency superimposed on the broadband signal, and selecting an amplitude for the further signal such that in playback of the stored signals by a skid-shaped pickup operating by compression of the hills, even the lowest hills contact the skid-shaped pickup and are compressed thereby.

REFERENCES:
patent: 3626087 (1971-12-01), Tomioka
patent: 3652809 (1972-03-01), Dickopp et al.
"Audio, Etc. - The Visible LP," E. T. Canby, Audio, June 1968, pp. 10 and 12.

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