Method and circuit for suppression of quantitizing noise ambiguities
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United States of America Patent
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Jul 14, 1987
Grant Date -
N/A
app pub date -
Jan 16, 1986
filing date -
Feb 13, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To suppress quantitizing ambiguities upon digital transmission of an analog signal, a random access memory (RAM) (13) is connected at the end terminal of a digital transmission line, and has its output connected to an adder stage (15). The adder stage adds the digital value of +1 to the output from the RAM (13). The value of the digitized data word, incremented by +1, is then compared in a subsequent interrogation cycle of the value at the input to the memory and only if the deviation is greater than .+-.1, a comparator, effecting the comparison, provides a 'store' signal for transfer of the new value to the RAM (13). The D/A converters, only then, are changed to provide a changed output analog signal.
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