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Communication interface for an electronic device

  • US 20040133722A1
  • Filed: 02/23/2004
  • Published: 07/08/2004
  • Est. Priority Date: 04/30/2001
  • Status: Active Grant
First Claim
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1. A communication interface for permitting an electronic device to be in communication with another electronic device using first or second data transmission modes, wherein said first mode of data transmission comprises single-ended asynchronous data transmission and wherein said second mode of data transmission comprises USB differential transmission of data, the interface comprising:

  • first communication means for communication using said first mode;

    second communication means for communication using said second mode;

    switching means for selectively connecting the first/second communication means to a common transmission path based on means for determining the mode of data transmission on said common transmission path;

    first and second input/output data lines;

    wherein the interface is arranged to use the first and second input/output data lines for data transmission in said second USB differential data transmission mode and in said first single-ended asynchronous data transmission mode.

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