Video clock signal generator in an optical scanner in which a ma

Details Video clock signal generator in an optical scanner in which a ma Video clock signal generator in an optical scanner in which a ma

1995-03-29

1997-09-16

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358494, 359214, 359566, H04N 104, H04N 1053, H04N 1113

Patent

active

056686447

ABSTRACT:
A video clock signal generator comprises: a light beam source; a mask having opposite ends spaced by a predetermined distance; a vibration scanner for reflecting the light beam and forming a light spot vibrating on the mask beyond the opposite ends thereof; a detector for generating an output signal representing optical information from the mask; a counter for counting a time required for the light spot to cross the opposite ends of the mask based on the output signal of the detector; and a control unit for controlling an amplitude of the scanner mirror in accordance with the time counted by the counter.

REFERENCES:
patent: 4044248 (1977-08-01), Glassman
patent: 4212018 (1980-07-01), Ohnishi et al.
patent: 4600951 (1986-07-01), Blitchington
patent: 4638156 (1987-01-01), Horikawa et al.
patent: 4661699 (1987-04-01), Welmers et al.
patent: 4700066 (1987-10-01), Horikawa
patent: 4761660 (1988-08-01), Lee
patent: 4962431 (1990-10-01), Imakawa et al.

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