G - Physics
11
B
325/1, 354/67
G11B 20/14 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) H03M 5/14 (2006.01) H04J 14/08 (2006.01) H04L 25/49 (2006.01)
Patent
CA 1261473
ABSTRACT OF THE DISCLOSURE A method and apparatus for generating signals representing a plurality (p) of n bit words corresponding to respective input signals is to be described. The apparatus comprises a basic word generator for generating first signals representing m basic words whereby the p words are the same as or are cyclic rearrangements of the n bits of the m basic words. Control means including combinatorial logic determines the one of the p words corresponding to each input signal and generates corresponding control signals. Selection means including optical modulators are responsive to the control signals for selecting the appropriate first signal, if necessary after recycling by imposing selected delays, to constitute an output signal corresponding to the determined one of the p words.
503496
British Telecommunications Public Limited Company
G. Ronald Bell & Associates
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