Rotary recording medium reproducing apparatus capable of perform

Details Rotary recording medium reproducing apparatus capable of perform Rotary recording medium reproducing apparatus capable of perform

1981-07-24

1984-01-31

Faber, Alan

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 101, 358312, H04N 576

Patent

active

044293356

ABSTRACT:
A reproducing apparatus is capable of performing special reproduction of information signals recorded on a rotary recording medium. The information signals are recorded in either spiral track turns or concentric tracks. The reproducing apparatus comprises a detector for generating a rotation detection signal having a frequency which varies proportionally to the rotational speed of the rotary recording medium. A special signal generator generates a special reproduction synchronizing signal and a generator generates an external control signal based on a signal which is obtained by variably controlling the frequency of the special reproduction synchronizing signal. A manual switch varies the frequency of the special reproduction synchronizing signal by controlling the control signal generator responsive to an output code signal corresponding to a position of the manual switch. The manual switch is positioned at a predetermined neutral position to produce the external control signal once every one rotation of the rotary recording medium, to repetitively reproduce the same track. The manual switch varies the frequency of the external control signal to vary, with predetermined steps, a speed of picture motion of the reproduced information signal, corresponding to positions of the manual switch.

REFERENCES:
patent: 3566049 (1971-02-01), Wright
patent: 4331976 (1982-05-01), Kinjo
patent: 4340907 (1982-07-01), Hirota

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