Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1982-01-26
1984-06-12
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
250363S, 356448, 358282, 358293, H04N 718
Patent
active
044545398
ABSTRACT:
A scanning apparatus periodically sweeps a beam of light across a printed circuit board in a plurality of sweep paths. An associated detector is responsive to radiation from the printed circuit board for producing first and second signals indicating whether a conductor portion or substrate portion of the board is being swept. An associated automatic level control is responsive to the first and second signals for providing level adjusted output signals. The levels of the adjusted output signals are substantially the same for all printed circuit boards swept in the scanning apparatus.
REFERENCES:
patent: 4152723 (1979-05-01), McMahon
patent: 4318129 (1982-03-01), Zwirn
patent: 4399469 (1983-08-01), Lew
Fedde George A.
Gottschalk Juan M.
Bell James R.
Britton Howard W.
Sperry Corporation
Truex Marshall M.
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