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Early photographic synchronization system and method

  • US 8,917,350 B2
  • Filed: 02/12/2010
  • Issued: 12/23/2014
  • Est. Priority Date: 02/12/2009
  • Status: Active Grant
First Claim
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1. A method for synchronizing a photographic lighting device to image acquisition by a camera, the method comprising:

  • detecting a predictor signal and/or event;

    determining an amount of time from the occurrence of the predictor signal and/or event until a desired time for the initiation of light emission of the photographic lighting device;

    transmitting to the photographic lighting device an instruction for the initiating light emission of the photographic lighting device at the desired time;

    allowing a first shutter blade of the camera to move such that light is allowed to pass to an imaging portion of an image acquisition sensor of the camera; and

    initiating light emission of the photographic lighting device, using the instruction, after the first shutter blade begins to expose the image acquisition sensor to light and before X-sync associated with the first shutter blade stopping movement,where said determining an amount of time includes utilization of time value determined using a calibration that includes;

    initiating an image acquisition sequence;

    determining a start of movement of a second shutter blade; and

    using a shutter speed of the image acquisition, a shutter blade travel time for the camera, and a time from the occurrence of the predictor signal and/or event to the start of movement of the second shutter blade to determine the time from the predictor signal and/or event to the stopping of movement of the first shutter blade.

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