Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-04-14
1990-05-08
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358160, 358 11, H04N 1120, H04N 701, H04N 514
Patent
active
049243128
ABSTRACT:
Arranged downstreams of a camera (1) for the serial or parallel-serial analysis of a field of view, the device comprises a digitizing device A/D (2) which serially supplies samples which are coded in parallel over p bits, a digital-to-analog converter D/A (3) and a monitor TV (4). According to the invention, the device furthermore includes, arranged between the A/D (2) and the D/A (3) a line memory (11) comprising an integral number N of lines, which serves as a buffer memory between the lines entering at the variable rate of the optomechanical analysis lines and the lines outputted at the fixed rate of the TV lines. The number N is chosen to be substantially equal to the instantaneous maximum possible shift of the number of lines between the analysis and their recovery. A picture clock pulse generator supplies the synchronizing signals, of the TV standard, necesssary for the analyser of the camera and for the line memory. Use: picture sensors with optomechanical analysis.
REFERENCES:
patent: 4386367 (1983-05-01), Peterson et al.
patent: 4500908 (1985-02-01), Mandeberg
patent: 4567506 (1986-01-01), Shinoda et al.
patent: 4719508 (1988-01-01), Sasaki et al.
patent: 4739405 (1988-04-01), Sumida
Botjer William L.
Peng John K.
U.S. Philips Corp.
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