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Method and apparatus for extending communications over USB

  • US 20060020736A1
  • Filed: 07/01/2005
  • Published: 01/26/2006
  • Est. Priority Date: 04/30/1999
  • Status: Active Grant
First Claim
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1. A system for extension of communications between a USB host and a USB device over an extended distance, comprising:

  • a USB-compliant near-end link coupled to the USB host;

    a USB-compliant far-end link coupled to the USB device;

    a near-end extender unit coupled to the near-end link; and

    a non-USB communications channel connecting the near-end extender unit to a far-end extender unit to define a relay extension;

    the near-end extender unit including means for translating communications received from the USB host from a USB-compliant reflective signal to a first terminated signal and means for transmitting the first terminated signal via the non-USB communications channel;

    the far-end extender unit coupled to the far-end link and including means for translating communications received from the near end extender unit as the first terminated signal via the non-USB communications channel back to a USB-compliant reflective signal and relaying the USB-compliant reflective signal to the USB device.

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