Pulse or digital communications – Repeaters – Testing
Patent
1977-12-15
1980-07-15
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
328155, 375118, H04L 2706, H04L 2536
Patent
active
042130069
ABSTRACT:
A circuit arrangement for the coarse synchronization of carrier signals and pulse signals with data signals in a data receiver is disclosed in which data signals modulated by a data transmitter are received and in which a carrier regulation stage generating the carrier signals, a pulse regulation stage for varying the phase of pulse signals, a demodulator demodulating the modulated data signals, using the carrier signals, and a sampler for sampling the demodulated data signals, using the pulse signals, and wherein a switching stage, which receives sampled data signals generated by the sampler, delivers to a carrier regulation stage first control signals altering the phase of the carrier signals and to a pulse regulation stage second control signals altering the phase of the pulse signals, as long as the difference between the momentary values of the sampled data signals and their theoretical values averaged over a prescribed duration of time exceeds a prescribed threshold value.
REFERENCES:
patent: 3517319 (1970-06-01), Drogin
patent: 4087756 (1978-05-01), Rogers, Jr.
patent: 4090145 (1978-05-01), Webb
Safourek Benedict V.
Siemens Aktiengesellschaft
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