Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1992-08-27
1994-04-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
348241, H01J 4014
Patent
active
053069056
ABSTRACT:
A focal plane array detector method and system and the detector circuit comprising a plurality of detector circuits, each of the detector circuits comprising a first capacitor having upstream and downstream electrodes, circuitry for periodically applying a predetermined constant voltage source to the downstream electrode and then removing the constant voltage source from the downstream electrode, a photodetector for applying an input signal to the upstream electrode, a signal storage device for storing the input signal on the downstream electrode at the first capacitor and a coupling device for periodically coupling the signal storage device to and uncoupling the signal storage device from the downstream electrode a predetermined time after the constant voltage source has been removed from the upstream electrode and a multiplex circuit coupled to each of the signal storage devices for providing a serial output of the signals stored on the signal storage devices. The system is disposed on a single semiconductor chip.
REFERENCES:
patent: 5162912 (1992-11-01), Ueno et al.
patent: 5182446 (1993-01-01), Tew
Guillory Michael R.
Kay Michael R.
Stokes Robert M.
Donaldson Richard L.
Grossman Rene E.
Lee John R.
Nelms David C.
Texas Instruments Incorporated
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