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Method and device for ambient light estimation

  • US 10,176,763 B2
  • Filed: 03/16/2015
  • Issued: 01/08/2019
  • Est. Priority Date: 09/17/2012
  • Status: Active Grant
First Claim
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1. A method of forming at least one control parameter dependent on ambient light, the method comprising:

  • acquiring light values from an ambient light sensor;

    acquiring positional status values from a positional status sensor;

    determining a variation of the light values over a time period;

    determining a temporal covariance value between the light values and the positional status values over the time period;

    applying a first temporal filtering of the light values to form a first control parameter for adjusting a display brightness of a display; and

    applying a second temporal filtering of the light values to form a second control parameter for adjusting pixel values of the display, the first temporal filtering different from the second temporal filtering,wherein at least one of the first control parameter or the second control parameter are formed in dependence on the temporal covariance value.

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