Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1983-08-29
1986-12-09
Church, Craig E.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
378 99, H05G 164, H04N 532
Patent
active
046283552
ABSTRACT:
A diagnostic X-ray apparatus emitting pulsed X-ray radiation includes a processor for performing digital X-ray subtraction of a previous mask image from current images. The apparatus includes circuitry for digitization of the video signals from an image intensifier-TV chain, digital subtraction to obtain digital difference signals, and subsequent reconversion of the resultant digital difference video signals to analog signals. Pulsed X-ray exposures are performed during the blanking periods of the TV camera following which the television fields immediately following the pulsed X-ray exposure are scanned and read out, and are supplied to the processor for performing the digital X-ray subtraction.
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patent: 4542459 (1985-09-01), Riederer
Nakashika et al., "Latest Diagnostic System for Circulatory Organs", Toshiba Review International Edition, No. 43, Jul.-Aug. 1969, pp. 24-29.
Fujii Senzo
Honda Michitaka
Ogura Ichiro
Suzuki Motomu
Church Craig E.
Tokyo Shibaura Denki Kabushiki Kaisha
Wieland Charles
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