Interior mirror assembly with display

  • US 9,487,144 B2
  • Filed: 10/14/2009
  • Issued: 11/08/2016
  • Est. Priority Date: 10/16/2008
  • Status: Active Grant
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First Claim
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1. An interior rearview mirror system for a vehicle comprising:

  • an interior rearview mirror assembly comprising a casing, a variable reflectivity reflective element, and a video display screen disposed in said casing and behind said reflective element, said video display screen operable to display images that are viewable through said reflective element by a person viewing said interior rearview mirror assembly when it is normally mounted in a vehicle equipped with said interior rearview mirror system;

    wherein said variable reflectivity reflective element comprises an electrochromic reflective element;

    wherein said interior rearview mirror assembly includes (i) a glare light sensor for sensing glare light at or near said reflective element and (ii) an ambient light sensor for sensing ambient light at said interior rearview mirror assembly;

    an image sensor operable to capture images of a scene encompassed by a field of view of said image sensor;

    wherein said interior rearview mirror assembly comprises a decoder that decodes analog output signals of said image sensor, said decoder having a microprocessor operable to (i) process image data and (ii) control said video display screen via a digital signal and (iii) control dimming of said electrochromic reflective element;

    wherein said decoder is responsive to a glare light output of said glare light sensor and an ambient light output of said ambient light sensor;

    wherein said microprocessor of said decoder comprises on screen display capability;

    wherein said decoder comprises at least one of on screen display circuitry, image enhancement circuitry, a 2D de-interlacing engine and a high quality scalar;

    wherein said decoder is operable to provide at least one of (a) programmable hue of a display displayed by said video display screen, (b) programmable brightness of a display displayed by said video display screen, (c) programmable saturation of a display displayed by said video display screen, (d) programmable contrast of a display displayed by said video display screen, (e) programmable sharpness control of a display displayed by said video display screen, (f) programmable sharpness control of a display displayed by said video display screen with vertical peaking, (g) programmable color transient improvement control of a display displayed by said video display screen, (h) programmable panorama/water-glass scaling of a display displayed by said video display screen, (i) programmable Gamma correction tables for said video display screen, (j) programmable black/white stretch of a display displayed by said video display screen and (k) programmable favorite color enhancement of a display displayed by said video display screen;

    wherein, responsive to said outputs of said glare light sensor and said ambient light sensor, said microprocessor of said decoder (i) adjusts the intensity of images displayed by said video display screen and (ii) controls dimming of said electrochromic reflective element, and wherein said microprocessor of said decoder also provides on screen display comprising graphic overlays.

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