Electrical sensing apparatus and method utilizing an array of transducer elements
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United States of America Patent
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Dec 14, 2004
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app pub date -
Dec 7, 1999
filing date -
Dec 7, 1999
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Abstract
Many electrical sensing devices include an array of transducer elements for converting external stimuli to electrical indications. Novel technologies to realize improvements in low power consumption, low noise, and analog output path which occupies minimal die area while maintaining certain data rates are disclosed. A two stage pipeline architecture of the invention in the analog output path maintains fast pixel rates with minimal ADC (analog digital converter) arrangement. A novel power supply and the use of differential amplifiers in connection with a black signal level as a reference voltage are also described.
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