Decoding process and apparatus
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United States of America Patent
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Mar 18, 1986
Grant Date -
N/A
app pub date -
Dec 29, 1982
filing date -
Jan 29, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A decoding system containing a synchronizing and entry detector rendering possible the phase-in of messages delayed, for example, by interference. In order to be able to decode parts of the message received prior to phase-in, the cipher is stored intermediately from the onset of reception in a memory. Following the completion of the transmission, the decoding generator is set to an initial state corresponding to the phase-in and operated in the inverse direction from there. Simultaneously the intermediately stored cipher is called up in an inversed order from the memory and decoded with the key pulse sequence of the decoding generator.
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