Diagnostic X-ray apparatus having a master timing control unit

Details Diagnostic X-ray apparatus having a master timing control unit Diagnostic X-ray apparatus having a master timing control unit

1983-06-10

1986-03-11

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358150, 378 99, H04N 532

Patent

active

045757526

ABSTRACT:
A diagnostic X-ray apparatus emitting X-ray radiation with a digital X-ray subtraction imaging technique which comprises digitization of video signals from an image intensifier-T.V. chain, digital subtraction and reconversion of the resulting digital difference video signals to analog signals under control of a master timing control unit. The master timing control unit comprises a clock for generating basic clock pulses supplied to a synchronizing delay circuit for generating a plurality of delayed clock pulses which are selected by a predetermined formula, and the resulting pulses are used to maintain the entire system in a proper phase relationship.

REFERENCES:
patent: 4204225 (1980-05-01), Mistretta
patent: 4204226 (1980-05-01), Mistretta
patent: 4285063 (1981-08-01), Zbinden
patent: 4393402 (1983-07-01), Keyes
patent: 4467358 (1984-08-01), Switsen
Nakashika et al., "Latest Diagnostic System for Circulatory Organs", Toshiba Review, International Edition, No. 43, Jul./Aug. 1969, pp. 24-29.

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