Pulse or digital communications – Repeaters – Testing
Patent
1982-05-04
1985-11-05
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
371 57, 34082501, 375108, 375118, H04L 700, H04L 122
Patent
active
045518459
ABSTRACT:
The instant invention relates to the phasing of digital trains containing identical data signals and clock signals of the same frequency. A data testing device compares the coincidence of the bits by packets of bits contained in the signals for emitting a signal (NoCo), if there is at least one non-coincidence in a packet. The testing device delivers a poor base relation signal (ABSCORR) after q non-coincidences. If the testing device has not delivered any non-coincidence pulse for a time t.sub.1, a phase discriminator delivers a phase non-matching signal (ABSPHA). A phase change demand signal (PAP) is delivered by the testing device either upon appearance of the signal (ABSCORR) or the signal (ABSPHA).
The invention is appropriate for switching purposes in microwave link transmission.
REFERENCES:
patent: 4052670 (1977-10-01), Watanabe et al.
patent: 4119796 (1978-10-01), Jones
patent: 4301537 (1981-11-01), Roos
patent: 4316285 (1982-02-01), Bobilin et al.
patent: 4368531 (1983-01-01), Chopping
ab der Halden Charles H.
Berenguier Pierre H.
Safourek Benedict V.
Societe Anonyme de Telecommunications
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