Method for the serial transmission of binary data and devices for its implementation
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United States of America Patent
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Jun 29, 1982
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N/A
app pub date -
Jan 21, 1980
filing date -
Jan 30, 1979
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Expired
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Abstract
The present invention concerns a method for the serial transmission of binary data in which each binary digit is transmitted in the form of an elementary signal occupying a time interval known as the binary interval. In this process a binary 1 is represented alternatively by a pulse or a space occupying the whole of the corresponding binary interval; a binary 0 is normally represented by a pulse occupying a half binary interval, except in the case where it is the first or the last one of a sequence of n+1 successive binary zeroes, the first being represented according to the above rule as a binary 0, except if the binary ones appeared after the preceeding sequence of n+1 successive binary zeros and are an even number, in which case it is represented as a binary 1 following the rule of alternation, the last being represented in accordance with the above rule as a binary 1 contradicting the alternation rule. The invention can be used to advantage in fibre optic links joining junctions encoded in HDB.sub.3.
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