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External communication interface for a digital camera

  • US 5,815,205 A
  • Filed: 02/21/1996
  • Issued: 09/29/1998
  • Est. Priority Date: 02/21/1995
  • Status: Expired due to Term
First Claim
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1. A communication interface for use between an electronic camera and an electronic device, the electronic device being separate from the electronic camera, comprising:

  • a housing;

    a mechanical connector, attached to the housing, which detachably connects the housing to the electronic camera;

    a plurality of electrical connectors which communicate electrical signals between the communication interface and the electronic camera;

    an electrical interface which communicates electrical signals between the communication interface and the electronic device; and

    circuitry, connected between the plurality of electrical connectors and the electrical interface, which changes a level of signals communicating between the electronic camera and the electronic device,wherein;

    the electronic camera includes a microprocessor which operates using signals having a low level of approximately zero volts and a high level greater than zero volts and less than or equal to approximately five volts; and

    the circuitry which changes the level of signals converts signals having the low level from the electronic camera to a signal between approximately -15 volts and -5 volts, and converts signals from the electronic camera having the high level to a signal between approximately +5 and +15 volts.

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