Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1980-10-01
1983-07-19
Miller, C. D.
Communications: electrical
Audible indication
Percussion-type sound producer
H03K 1324
Patent
active
043946410
ABSTRACT:
A method and a device for coding binary data to be transmitted and a device for decoding coded data dispense with the need to transmit a direct-current component and make it possible to reconstitute clock signals from coded data without any addition of a particular channel. With this objective, the input signal constituted by a sequence of groups of eight binary data is converted to a coded signal constituted by a sequence of words of sixteen binary data associated respectively with the groups and having a data repetition frequency which is double the repetition frequency of the input signal data. The words are also chosen so as to ensure that each datum of the coded signal is followed or preceded by a datum having the same logic state. Furthermore, a sequence of particular words is inserted at the beginning of the message in order to permit easy recovery of clock signals at the time of decoding.
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"Thomson-CSF"
Miller C. D.
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