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Vehicle imaging device, vehicle imaging display system, and vehicle

  • US 10,358,090 B2
  • Filed: 08/07/2015
  • Issued: 07/23/2019
  • Est. Priority Date: 08/11/2014
  • Status: Active Grant
First Claim
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1. A vehicle imaging device for displaying an image of the outside of a vehicle on a display unit used in the vehicle, the device comprising:

  • an imaging unit that is attached to the vehicle, images an image of the outside of the vehicle, and outputs an imaging signal, the imaging unit imaging an image of a rear lateral area of the vehicle; and

    an image processing circuit includingan image signal generation unit that performs a generation process of generating an image signal indicating an image to be displayed in each line of the display unit based on the imaging signal, and outputs the image signal to the display unit, anda timing control unit that controls a timing when the image signal generation unit outputs the image signal to the display unit,wherein, when a time from when a frame of the imaging signal is started to when a frame of the image signal output to the display unit is started is a phase difference, a frame rate of the imaging unit is a first frame rate, and a highest frame rate at which the display unit is configured to display is a second frame rate,the timing control unit is configured to perform first timing control for decreasing the phase difference by causing the image signal generation unit to output the image signal such that the frame rate of the display unit is the second frame rate in a case where the phase difference is greater than a predetermined time, and second timing control for causing the image signal generation unit to output the image signal such that the frame rate of the display unit is the first frame rate after the phase difference is equal to or less than the predetermined time,wherein the generation process includes at least one of a first process or a second process, or both, the first process is a process of relatively further magnifying an area of the image based on the imaging signal which is close to a vehicle body in a left and right direction than an area thereof which is far away from the vehicle body, and the second process is a process of relatively further magnifying an area of the image based on the imaging signal which is located in the center in an up and down direction than an area thereof which is located in an upper or lower area than the center area,wherein, when a length of the area close to the vehicle body in the left and right direction is X1 and a magnification ratio thereof is H1, and a length of the area far away from the vehicle body in the left and right direction is X2 and a minification ratio thereof is H2, the H1 and the H2 are determined such that X1+X2=X1·

    H1+X2·

    H2 in the first process, andwhen a length of the center area in the up and down direction is Y1 and a magnification ratio thereof is V1, a length of the upper area in the up and down direction is Y2 and a minification ratio thereof is V2, and a length of the lower area in the up and down direction is Y3 and a minification ratio thereof is V3, the V1, the V2 and the V3 are determined such that Y1+Y2+Y3=Y1·

    V1+Y2·

    V2+Y3·

    V3 in the second process.

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