Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Patent
1992-11-12
1995-05-09
Chin, Stephen
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
375342, 375354, 3701053, 370108, H04L 700, H04L 2536, H04L 2540
Patent
active
054147395
ABSTRACT:
A transmission system which includes a plurality of reproduction nodes connected to each other in a cascade connection via a communication line. Each node includes a timing extraction circuit for extracting a timing signal from a signal received via the communication line, a discriminating circuit for converting the received signal into a digital signal according to the timing signal, and a processing circuit for processing, based on the timing signal, the digital signal outputted from the discriminating circuit and outputting the processed digital signal to the communication line. The timing extraction circuit includes a signal delay unit for supplying the timing signal with a signal delay time greater than a delay time occurring in the processing circuit.
REFERENCES:
patent: 3699554 (1972-10-01), Jones
patent: 3825844 (1974-07-01), Peterman et al.
patent: 4435825 (1984-03-01), Tomooka
patent: 4876700 (1989-10-01), Grindahl
Byrne & Karafin et al "Systematic Jitter in a Chain of Digital Regenerators" Bell System Technical Journal vol. 42 pp. 2679-2714 Nov. 1963.
Amada Eiichi
Kobayashi Naoya
Mabuchi Hiroshi
Maruyama Hisayuki
Mizokawa Sadao
Chin Stephen
Hitachi , Ltd.
Hitachi Cable Ltd.
Le Amanda
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