SYSTEM, METHOD, AND DEVICE FOR ADJUSTING DISPLAY LUMINANCE

• US 20140285531A1
• Filed: 03/19/2013
• Published: 09/25/2014
• Est. Priority Date: 03/19/2013
• Status: Abandoned Application

• Current Assignee: Ericsson Television Incorporated (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson Television Incorporated (Telefonaktiebolaget LM Ericsson)
• Inventors: Dasher, Charles Hammett
• Application Number:
  US13/847,334
• Publication Number:
  US 20140285531A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 2370/022 Centralised management of display operation, e.g. in a server instead of locally
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

A system, method, and device for adjusting display luminance based upon luminance control information associated with content being presented on a display associated with a computing device. A luminance module in the computing device determines luminance control information for the content. The luminance control information is used to control a luminance of a display. The luminance control information corresponds to brightness values of the content. A display driver adjusts a luminance of the display during presentation of the content based upon control signals received from the luminance module. The luminance module uses the luminance control information to generate the control signals.

Claims

1. A method of adjusting a luminance of a display of a computing device based upon luminance control information of content presented on the display, the method comprising:

determining, by a luminance module in the computing device, luminance control information for the content, wherein the luminance control information is used to control a luminance of a display, and further wherein the luminance control information corresponds to brightness values of the content; and

adjusting by a display driver in the computing device, a luminance of the display during presentation of the content using the luminance control information.

2. The method according to claim 1, wherein the luminance control information is embedded into the content as metadata.

3. The method according to claim 1, further comprising:

receiving by a content buffer of the computing device, the content from a network; and

wherein determining luminance control information for the content comprises reading by the luminance module, the luminance control information from metadata of the content.

4. The method according to claim 1, further comprising receiving by the luminance module of the computing device, the luminance control information from a network on a control channel.

5. The method according to claim 1, wherein the luminance control information is specified by a content author.

6. The method according to claim 1, further comprising:

determining an ambient light level proximate the display via an ambient light sensor;

calculating an ambient light scaling factor by the luminance module; and

modifying by the display driver the luminance of the display based upon the ambient light scaling factor.

7. A method of adjusting a luminance of a display based upon content brightness of content stored by a computing device associated with the display, the method comprising:

scanning by a luminance module, content segments of the content to determine brightness values of the content segments, wherein the content segments are streamed to a buffer of the computing device;

calculating by the luminance module, luminance control information for the content from the brightness values of the content segments, wherein the luminance control information is used to control a luminance of a display; and

adjusting by a display driver, a luminance of the display during presentation of the content segments based upon on the luminance control information.

8. The method according to claim 7, wherein determining luminance control information for the content comprises:

generating by the luminance module, a brightness profile for the content; and

generating by the luminance module, a luminance script from the brightness profile; and

executing the luminance script by the luminance module to cause the display driver to adjust the luminance of the display while a content player application executing on the computing device presents the content for display.

9. The method according to claim 8, wherein the luminance script is keyed to time stamps of the content such that as the luminance module executes the luminance script, the luminance module causes the display driver to adjust the luminance of the display at each of the time stamps, wherein each of the time stamps comprises a luminance setting for the display.

10. A computing device for adjusting a luminance of a display based upon luminance control information of content presented by the display, the computing device comprising:

a luminance module configured to determine luminance control information for the content, wherein the luminance control information is used to control a luminance of a display, and further wherein the luminance control information corresponds to brightness values of the content;

a display driver configured to adjust a luminance of the display during presentation of the content based upon control signals received by the display driver from the luminance module; and

wherein the luminance module generates the control signals from the luminance control information.

11. The device according to claim 10, further comprising:

an ambient light sensor configured to sense an ambient light level proximate the display;

wherein the luminance module is further configured to calculate an ambient light scaling factor; and

modify the control signals for the display driver based upon the ambient light scaling factor.

12. The device according to claim 10, further comprising a content buffer hat receives the content from a network on a content channel.

13. The device according to claim 10, wherein the display comprises a transparent display.

14. The device according to claim 13, wherein the luminance module is further configured to adjust a transparency of the content presented on the transparent display.

15. The device according to claim 10, wherein the luminance module receives the luminance control information from a network on a control channel.

16. A system for adjusting a luminance of a display based upon luminance control information of content presented on the display, the system comprising:

a computing device comprising;

a display driver configured to adjust a luminance of the display during presentation of the content; and

a luminance control module configured to control the display driver according to luminance control information, wherein the luminance control information corresponds to brightness values of the content; and

a network that streams the content to the computing device.

17. The system according to claim 16, wherein the network streams the luminance control information to the luminance module on a control channel.

18. The system according to claim 17, wherein the luminance module is configured to determine the luminance control information for the content by analyzing brightness values of images included in the content.

19. The system according to claim 16, wherein the network generates the luminance control information by analyzing the brightness values of images of the content.

20. The system according to claim 16, wherein the computing device also includes:

an ambient light sensor that senses ambient light proximate the display; and

wherein the luminance module is further configured to;

calculate an ambient light scaling factor; and

apply the ambient light scaling factor to control signals for the display driver such that the display drivers modifies the luminance of the display based upon the ambient light scaling factor.