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Cable detection system

  • US 7,902,810 B2
  • Filed: 12/21/2007
  • Issued: 03/08/2011
  • Est. Priority Date: 12/21/2006
  • Status: Active Grant
First Claim
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1. A cable detection system, comprising:

  • a source of an input electrical AC signal for coupling to a first lead pin of a cable connector and providing the input electrical AC signal to the first lead pin; and

    a detector coupled to a different second lead pin of said cable connector that detects an electrical AC output signal derived by capacitive coupling of the input electrical AC signal occurring within a multi-lead cable at the second lead pin and compares an amplitude dependent characteristic of said detected AC output signal with a predetermined threshold value to determine whether said multi-lead cable is connected to said cable connector and said detector determines a type of said multi-lead cable in response to the amplitude dependent characteristic of said detected AC output signal.

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