H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 3/06 (2006.01) H04J 14/08 (2006.01) H04L 7/033 (2006.01) H04Q 11/00 (2006.01) H04L 7/04 (2006.01)
Patent
CA 2099348
Abstract of the Disclosure A synchronization arrangement achieves very fast synchronization for a received data signal in an optical switched system. Phase synchronization of received data with an internal clock at the receiver is provided by synchronizing the received data to the internal clock. In the operation of the arrangement, the received data signal from a remote transmitter is reproduced a predetermined number of times and each one of the reproduced data signals is coupled through one of an array of delay lines. Each delay line has a different delay and is arranged in an increasing order such that progressively longer or staggered delays for the received data signal is provided in the form of these reproduced, delayed data signals. Each one of the reproduced, delayed data signals is examined for determining the period of time therein during which the incoming data is high and the period of time during which this data is low, in relation to the internal clock signal. With the phase relationship between each delayed data signal and the internal clock determined, the synchronizing arrangement selects the correct one of the delayed data signals which is most closely in phase alignment with the internal clock at the receiver. Once the received data is synchronized, the receiver works completely synchronously without any additional clock adaptation for the period of receipt of the received data. -21-
Camlet John V.
Pitio Walter M.
Shugard Donald D.
American Telephone And Telegraph Company
Camlet John V.
Kirby Eades Gale Baker
Pitio Walter M.
Shugard Donald D.
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