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Data transmission protocol method and apparatus

  • US 5,854,840 A
  • Filed: 05/20/1997
  • Issued: 12/29/1998
  • Est. Priority Date: 04/26/1995
  • Status: Expired due to Term
First Claim
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1. Physical layer data signal originating apparatus for application with a single optical fiber comprisinga time base generator for generating a signal at a predetermined signaling rate,a channel coder comprising a data scrambler and a run-length activated inverter coupled to the time base and to an output of the scrambler, anda transmitter including an LED optical source and driver circuitry responsive to the output of the channel coder for outputing a signal to the optical fiber.

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