Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1989-12-28
1993-01-19
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
358133, 358146, 370106, 375122, H04N 504, H04N 7133
Patent
active
051812290
ABSTRACT:
A data receiver, and transmitter/receiver combination, for transmitting data using statistic coding. A data transmitter transmits statistic encoded data representing successive sample series in a form having a variable number of bits followed by two self-synchronizing codes, each self-synchronizing code including a suffix formed by a codeword or a concatenation of codewords. A data receiver for use with such a transmitted signal includes a correction circuit which can store at least one sample series, and a write counter for forming address codes defining locations of samples to be stored in the storage portion of the correction circuit. Preferably a sequencer provides a window signal which validates the output of a synchronizing signal detector in a time interval when the synchronizing word will probably be received.
REFERENCES:
patent: 3662114 (1972-05-01), Clark
patent: 3689899 (1972-09-01), Franaszek
patent: 3849994 (1989-07-01), Heitman et al.
patent: 4276642 (1981-06-01), Siglow et al.
patent: 4696690 (1987-08-01), Sato
patent: 4860324 (1989-08-01), Satomura
Bastien Jean-Paul
Boisson Jean-Yves
Langlais Thierry
Marion Michael E.
Safourek Benedict V.
Telecommunications Radioelectriques El Telephoniques
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