Scanning system in information reproducing apparatus

Details Scanning system in information reproducing apparatus Scanning system in information reproducing apparatus

1987-11-16

1989-08-29

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 101, H04N 591

Patent

active

048622915

ABSTRACT:
A spindle servo circuit controlled according to a time base. Fine time base tuning is performed in a clock driven CCD. In a scan mode, tracks are alternately reproduced and jumped. The fine tuning is turned off at the start of jumping (which occurs after a full video field has been written into a video memory) and the center frequency of a VCO clock is decreased so as to slow the shifting of the CCD.

REFERENCES:
patent: 4361849 (1982-11-01), Bolger
patent: 4567534 (1986-01-01), Groen et al.
patent: 4587643 (1986-05-01), Monen et al.
patent: 4745494 (1988-05-01), Kaneko et al.
patent: 4763205 (1988-08-01), Okano

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