Dynamically established white balance in video display device based on ambient light

• US 9,842,530 B2
• Filed: 01/26/2016
• Issued: 12/12/2017
• Est. Priority Date: 01/26/2016
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Carlsson, Gregory, Richman, Steven, Zustak, Frederick
• Primary Examiner(s): GIESY, ADAM
• Application Number:
  US15/006,511
• Publication Number:
  US 20170213494A1
• Time in Patent Office: 686 Days
• Field of Search: None
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/2007 Display of intermediate tones
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

The white balance of a display device such as an LCD TV is automatically adjusted based on the color temperature of ambient light.

Claims

1. An apparatus comprising:

at least one computer memory that is not a transitory signal and that comprises instructions executable by at least one processor to;

receive a signal from an ambient light sensor located adjacent a video display;

based at least in part on the signal, establish a white balance in the video display; and

present on the video display at least one user interface (UI) comprising;

a first selector selectable to enable automatic white balance adjustment of the display device;

at least a second selector selectable to manually establish a white balance; and

at least a third selector selectable to disable white balance adjustment based on ambient light.

2. The apparatus of claim 1, comprising the at least one processor.

3. The apparatus of claim 1, comprising the video display and the sensor.

4. The apparatus of claim 1, wherein the instructions are executable to:

based at least in part on the signal, establish a backlighting for the video display.

5. The apparatus of claim 1, wherein the instructions are executable to:

based at least in part on the signal, establish a brightness for the display.

6. The apparatus of claim 1, wherein the instructions are executable to:

based at least in part on the signal, determine a color temperature; and

establish the white balance based at least in part on the color temperature.

7. The apparatus of claim 1, wherein the at least one UI comprises:

up and down selectors selectable to respectively vary white balance for more (or less) blue and more (or less) orange or yellow or red.