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Differential signaling system and flat panel display with the same

  • US 8,115,505 B2
  • Filed: 04/01/2008
  • Issued: 02/14/2012
  • Est. Priority Date: 04/02/2007
  • Status: Active Grant
First Claim
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1. A differential signaling system comprising:

  • a differential signal line having a first wiring and a second wiring coupled between a sending end and a receiving end of the system;

    a termination resistor coupled between the first wiring and the second wiring in the receiving end side of the system; and

    a test circuit directly coupled to the termination resistor in parallel and configured to amplify and detect a variation of a differential impedance due to the differential signal line,wherein the test circuit includes;

    a differential test amplifier configured to amplify the variation in the differential impedance of the first wiring or the second wiring and output an output signal through an output terminal,a switching unit installed at an input terminal of the differential test amplifier and configured to control an operation of the differential test amplifier, anda peak detector coupled to the output terminal of the differential test amplifier and configured to convert the output signal of the differential test amplifier into a direct current component.

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