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Digital camera synchronization

  • US 7,511,764 B2
  • Filed: 07/24/2002
  • Issued: 03/31/2009
  • Est. Priority Date: 07/24/2002
  • Status: Expired due to Fees
First Claim
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1. A synchronization system for a plurality of video cameras comprising:

  • a base unit, including;

    a master time-base adapted to generate a master synchronization signal defining a frame period within which a frame of video data is captured;

    a base unit communications transceiver adapted to transmit the frame synchronization signal; and

    a video camera, including;

    a video camera communications transceiver adapted to receive the frame synchronization signal from the base unit and transmit video data to the base unit;

    a camera time-base adapted to reset a camera time-base value in response to reception of the frame synchronization signal and wherein the camera time-base is configured to operate during a camera time-base period following said reset wherein the camera time-base period is less than the frame period;

    an image sensor adapted to store video data; and

    an exposure controller adapted to monitor a value of the camera time-base and, upon detecting the value of the camera time-base matching a predetermined value, initiate exposure of the image sensor.

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