Wireless X-ray detector for a digital radiography system...

Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system

Reexamination Certificate

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C250S370080, C378S021000

Reexamination Certificate

active

11409883

ABSTRACT:
A wireless X-ray detector for a digital radiography system with remote detection of impinging radiation from the system X-ray source onto a sensor panel having amorphous or crystalline silicon photodiodes or metal insulated semiconductor (MIS) sensors. Changes in current in the photodiode bias supply circuit is sensed to generate a signal indicating presence of radiation. Improved detection of X-ray cessation is achieved either by leaving at least one line of sensors connected between the bias supply circuit to a virtual ground during charge accumulation or by using an X-ray presence detector circuit that increases the sensitivity of the detector circuit to bias circuit current changes occurring after onset of the radiation.

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U.S. Appl. No. 11/409,883, filed Dec. 2005, Dhurjaty et al.
U.S Appl. No. 11/323,505, entitled: X-Ray Impingement Event Detection System and Method for a Digital Radiography Detector, filed Dec. 30, 2005 in the name of Dhurjaty et al.

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