Analog threshold decoder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 21, 1985
Grant Date -
N/A
app pub date -
Oct 29, 1982
filing date -
Oct 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A modified Type I decoder generates analog syndrome bits from a selected combination of analog signals representing bits yet to be decoded and digital signals representing already decoded information bits. A selected combination of analog syndrome bits is used to generate a weighted majority decision by analog summation. The weighted majority decision is compared to a variable threshold signal which is proportional to the analog magnitude of the bit being decoded. The decision signal which results from this comparison is used to correct the digital value of the bit being decoded. The required number of analog multipliers is reduced by coupling a plurality of multipliers in series and storing the outputs from different analog multipliers in respective analog storage devices.
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