Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1987-10-15
1989-08-08
Groody, James J.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358 54, H04N 338, H04N 5253
Patent
active
048558362
ABSTRACT:
Apparatus and method for converting information recorded on film to video signal data in which the film is transported in the direction of its length between light source and scanner optics in which each film frame is scanned by lines and scan data is stored in a frame buffer. The storage operation is synchronized by frame through an electro-optical assembly which is positioned to detect passage of film sprocket apertures toward the scanning station, which apertures possess a predefined relationship to the frame edges in accordance with industry standards. A shift register delay is responsive to pulses from a film transport tachometer for selectively delaying the synchronization signal to the buffer, and thereby accommodating both separation of the synchronization optics from the scanning station and variations in film transport velocity. The frame buffer is clocked to store data by scan line through a second tachometer, which thus likewise automatically compensates for variations in film transport speed.
REFERENCES:
patent: 3663750 (1972-05-01), Besier
patent: 3949161 (1976-04-01), Fujishima et al.
patent: 4054918 (1977-10-01), Kamogawa et al.
patent: 4319280 (1982-03-01), Roos et al.
Bauer Robert M.
Groody James J.
Producers Color Service, Inc.
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