Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2007-05-01
2007-05-01
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S370080, C378S021000
Reexamination Certificate
active
11323505
ABSTRACT:
A wireless, independent digital imaging sensor utilizes an external charge balance capacitor to establish a sense voltage at a common node between the charge capacitor and the pixel intrinsic capacitors in the sensor panel. A variable width pulse train responds to the sense voltage to control injection of charge to the external capacitor to maintain a constant voltage at the common equal to a reference voltage. An increase in pulse width above a threshold level representative of the onset of X-ray exposure is detected to generate an output control signal used to control subsequent image acquisition functions of the imaging sensor.
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Dhurjaty Sreeram
Geisbuesch Gordon
Hawver Jeffery R.
Silbermann Joshua M.
Yorkston John
Baker David S.
Eastman Kodak Company
Parulski Susan L.
Porta David
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