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Signal transmission apparatus for external electronic devices

  • US 7,509,508 B2
  • Filed: 08/10/2005
  • Issued: 03/24/2009
  • Est. Priority Date: 08/10/2005
  • Status: Expired due to Fees
First Claim
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1. A signal transmission apparatus for external electronic devices to provide electricity and signals required for an external electronic device which is connected electrically to a computer host, comprising:

  • a power supply to provide electricity required for the external electronic device and the computer host including a first connection port which has an electric connector and a signal connector, the signal connector being coupled with a signal transmission line to connect to the computer host; and

    a signal adapter line which has an adapter on one end mating and electrically connecting to the first connection port, and an electric plug and a signal plug on other end corresponding to an electric port and a signal port of the external electronic device.

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