US Patent 7301534 Determining the lighting conditions surrounding a device

Patent 7301534 was granted and assigned to Nokia on November, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Nokia

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7301534

Date of Patent

November 27, 2007

Patent Application Number

10445278

Date Filed

May 23, 2003

Patent Primary Examiner

‌

David L Lewis

Patent abstract

The invention relates to a method for determining the lighting conditions surrounding a device comprising a transmissive color LCD display 1. In order to obtain a detailed information on the lighting conditions, it is proposed that the method comprises measuring within the device the intensity of light passing through the LCD display 1 from outside of the device, while no backlight is switched on. The light is color filtered by at least part of the LCD display 1 with a known color distribution. The invention equally relates to a device comprising means for carrying out the proposed method.