Floating point analog to digital converter
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United States of America Patent
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Oct 29, 1991
Grant Date -
N/A
app pub date -
Jul 31, 1990
filing date -
Jul 31, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A floating point analog to digital converter having an exponent converter which divides the input signal successively one-half until the divided signal is within the range of a mantissa linear analog to digital converter. The exponent converter also generate a digital exponent representative of the division factor. The resulting divided signal is then digitized by the mantissa analog to digital converter. An output is thereby provided composed of a digital exponent and a digital mantissa. In one embodiment, the floating point converter is a charge mode converter suitable for direct interface to a charge mode device such as a CCD image sensor.
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