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Display calibration in electronic displays

  • US 10,366,674 B1
  • Filed: 12/27/2016
  • Issued: 07/30/2019
  • Est. Priority Date: 12/27/2016
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a one-dimensional photo-detector configured to measure luminance parameters of pixels of an electronic display, wherein the electronic display includes a plurality of columns of pixels and the luminance parameters include a brightness level for each of the measured pixels; and

    a controller configured to;

    instruct the electronic display to activate the pixels of the electronic display using a plurality of sparse patterns and each sparse pattern describes a respective subset of pixels within a single respective column, and for each sparse pattern;

    there is a fixed number of inactive pixels between adjacent active pixels in the single respective column,the respective subset of pixels within the respective column is sequentially presented in a rolling manner such that no two pixels of the electronic display are active over a same time period, andthe respective subset of pixels in the single respective column described by the sparse pattern are activated before advancing to another sparse pattern that describes a subset of pixels in an adjacent column,instruct the one-dimensional photo-detector to measure luminance parameters for each of the pixels in each of the plurality of sparse patterns, andgenerate calibration data based on the measured luminance parameters of the pixels in each of the plurality of sparse patterns, the calibration data including a brightness level adjustment to one or more of the pixels such that corresponding brightness levels of the one or more pixels are within a predetermined range of brightness levels.

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