Charge-coupled device serial analog-to-digital converter and associated conversion method
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United States of America Patent
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Jun 23, 1981
Issued Date -
N/A
app pub date -
Apr 13, 1979
filing date -
Jan 12, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plurality of charge-coupled device shift registers or shift register elements is used to generate a plurality of packets of charge, each proportional to a different reference potential. Using a sense amplifier or comparator, each of the packets of charge is compared, either simultaneously or sequentially, with one or more packets of charge generated by the potential of an analog signal. Signals from the comparator are then supplied to an encoder or a counter to generate a digital signal representative of the analog signal. In one embodiment the plurality of different reference potentials are generated by positioning the shift registers or shift register elements at various locations along a resistance having a potential applied across it.
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