Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-09-09
1988-12-27
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358148, H04N 718
Patent
active
047944536
ABSTRACT:
Apparatus and method particularly suitable for use with the closed loop color to color registration system of a commercial web printing apparatus utilizes a CCD camera having an image sensor and a synchronization generator circuit which generates periodic scan pulses which trigger the image acquisition scan of the image sensor. A predetermined time prior to triggering of a strobe a prefresh pulse is generated in order to trigger a complete scan of the image sensor prior to firing the strobe. A predetermined time period subsequent to the firing of the strobe a scan triggering pulse is generated to trigger an image acquisition scan of the image sensor. This results in highly stable and reliable acquisition of a low noise image of for example, a registration mark on a printed web which may then be processed by a registration control system.
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Gnuechtel Herman C.
Kosmen Stephen P.
Britton Howard W.
Kostak Victor R.
Web Printing Controls Co.
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