Method and apparatus for recording and/or reproducing a video si

Details Method and apparatus for recording and/or reproducing a video si Method and apparatus for recording and/or reproducing a video si

1974-03-14

1976-02-17

Konick, Bernard

Telegraphy

Systems

Simplex-reversing periodic

1791003V, 178 67A, 178 66DD, G11B 702

Patent

active

039393020

ABSTRACT:
Composite television signals are recorded in a spiral track or in a series of concentric circular tracks on a record disc. Line sequential signals are optically recorded in the radial direction on a record disc with one horizontal line interval of the composite television signals corresponding to the width of the record track, and with the successive line signals being arranged in the circumferential direction of the track. Pulse-time modulated video and audio signals are recorded as a series of depressions all having the same width and the same depth, and with the varying length between the adjacent depressions corresponding to the information signal. A video signal reproducing head is provided adjacent to the optical record disc for optically reproducing video signals from the tracks on the disc which is, during reproduction of the signals, rotated at an extremely low speed so as to facilitate the reliable tracking of the signal reproducing head in respect to the recorded tracks.

REFERENCES:
patent: 2617891 (1952-11-01), Karolus
patent: 2972660 (1961-02-01), Toulon
patent: 3361873 (1968-01-01), Johnson
patent: 3371156 (1968-02-01), Frohbach
patent: 3446914 (1969-05-01), Hodge
patent: 3463876 (1969-08-01), Law
patent: 3701846 (1972-10-01), Zenzefilis

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