High density recording system using side-by-side information and

Details High density recording system using side-by-side information and High density recording system using side-by-side information and

1979-04-25

1982-02-09

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

369 13, 369 44, 369111, H04N 576, G11B 1112

Patent

active

043152830

ABSTRACT:
An information signal recording system records an information signal, a first and a second reference signals for tracking control, and a third reference signal for switching the first and second reference signals at the time of reproduction on a recording disc. The first and second reference signals are alternately recorded at positions intermediate between centerlines of adjacent information signal tracks. The third reference signal is recorded at a predetermined position on every information signal track. A reproducing system reproduces the information signal together with the third reference, and the first and second reference signals by a single reproducing element. A tracking control signal is produced from the first and second reference signals switched by the third reference signal separated from the reproduced information signal.

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