Vehicle vision system utilizing camera synchronization

  • US 9,912,841 B2
  • Filed: 10/31/2016
  • Issued: 03/06/2018
  • Est. Priority Date: 12/05/2012
  • Status: Active Grant
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First Claim
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1. A vehicular vision system, said vehicular vision system comprising:

  • a plurality of cameras disposed at a vehicle equipped with said vision system;

    wherein said plurality of cameras comprises at least a first camera, a second camera, a third camera and a fourth camera;

    each of said first camera, said second camera, said third camera and said fourth camera having a respective field of view exterior of the equipped vehicle;

    each of said first camera, said second camera, said third camera and said fourth camera being operable to capture frames of image data;

    an electronics control unit (ECU);

    wherein image data captured by said first camera is provided to the ECU via a first ETHERNET link from said first camera to the ECU;

    wherein image data captured by said second camera is provided to the ECU via a second ETHERNET link from said second camera to the ECU;

    wherein image data captured by said third camera is provided to the ECU via a third ETHERNET link from said third camera to the ECU;

    wherein image data captured by said fourth camera is provided to the ECU via a fourth ETHERNET link from said fourth camera to the ECU;

    wherein control signals controlling operation of said first camera are provided from the ECU to said first camera via said first ETHERNET link;

    wherein control signals controlling operation of said second camera are provided from the ECU to said second camera via said second ETHERNET link;

    wherein control signals controlling operation of said third camera are provided from the ECU to said third camera via said third ETHERNET link;

    wherein control signals controlling operation of said fourth camera are provided from the ECU to said fourth camera via said second fourth ETHERNET link;

    wherein said first camera receives from the ECU via said first ETHERNET link a first camera control signal that regulates timing of said first camera to be synchronous with reference timing of the ECU;

    wherein regulation of timing of said first camera comprises starting said first camera synchronous to the ECU reference timing and holding said first camera synchronous to the ECU reference timing;

    wherein said second camera receives from the ECU via said second ETHERNET link a second camera control signal that regulates timing of said second camera to be synchronous with reference timing of the ECU;

    wherein regulation of timing of said second camera comprises starting said second camera synchronous to the ECU reference timing and holding said second camera synchronous to the ECU reference timing;

    wherein said third camera receives from the ECU via said third ETHERNET link a third camera control signal that regulates timing of said third camera to be synchronous with reference timing of the ECU;

    wherein regulation of timing of said third camera comprises starting said third camera synchronous to the ECU reference timing and holding said third camera synchronous to the ECU reference timing;

    wherein said fourth camera receives from the ECU via said fourth ETHERNET link a fourth camera control signal that regulates timing of said fourth camera to be synchronous with reference timing of the ECU; and

    wherein regulation of timing of said fourth camera comprises starting said fourth camera synchronous to the ECU reference timing and holding said fourth camera synchronous to the ECU reference timing.

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