Television – Monitoring – testing – or measuring – Testing of camera
Patent
1994-01-19
1995-11-14
Groody, James J.
Television
Monitoring, testing, or measuring
Testing of camera
348188, 364579, H04N 1700, H04N 1702
Patent
active
054671280
ABSTRACT:
A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment.
REFERENCES:
patent: 5033015 (1991-07-01), Zwin
patent: 5293543 (1994-03-01), Okabe
George J. Yates et al., "High-Speed Test Station For Solid-State Imagers," Los Alamos National Laboratory LA-UR-92-2352, NTIS (Oct. 1992).
Albright Kevin L.
Turko Bojan T.
Yates George J.
Groody James J.
Lee Michael H.
The Regents of the University of California, Office of Technolog
Wilson Ray G.
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