Lighting Calibration System and Method

• US 20090146982A1
• Filed: 09/03/2008
• Published: 06/11/2009
• Est. Priority Date: 12/05/2007
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Allen, Will, Thielman, Jeff
• Application Number:
  US12/203,690
• Publication Number:
  US 20090146982A1
• Time in Patent Office: Days
• US Class Current: 345/207
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: H04N 7/15 Conference systems
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A lighting calibration system for a video display environment includes a video display and a lighting sensor, fixedly positioned in the environment, and a lighting detection system, coupled to the lighting sensor and controllable from outside the environment. The lighting detection system is configured to receive positionally and temporally unique signals from the lighting sensor, and to provide an indication when lighting conditions in the environment differ from a selected lighting standard, based upon the signals.

Claims

1. A lighting calibration system for a video display environment, comprising:

a video display, fixedly positioned in a video display environment;

a lighting sensor, fixedly positioned in the environment; and

a lighting detection system, coupled to the lighting sensor and controllable from outside the environment, configured to receive positionally and temporally unique signals from the lighting sensor, and to provide an indication when lighting conditions in the environment differ from a selected lighting standard, based upon the signals.

2. A video display environment in accordance with claim 1, wherein the lighting sensor comprises a color sensor, configured to indicate a change in light color in the environment.

3. A video display environment in accordance with claim 1, further comprising a fixed table within the environment, the lighting sensor being attached to the table.

4. A video display environment in accordance with claim 3, wherein the lighting sensor comprises a plurality of lighting sensors, the positions of the sensors being approximately aligned with positions of lighting fixtures in the environment.

5. A video display environment in accordance with claim 1, wherein the sensor is positioned to detect light reflected from a surface of known reflective properties within the environment.

6. A video display environment in accordance with claim 1, wherein the lighting sensor comprises a plurality of lighting sensors, each having a unique fixed position in the environment, a change in a lighting signal pattern from the plurality of sensors being indicative of a position in the environment experiencing a change in lighting conditions.

7. A video display environment in accordance with claim 6, wherein the sensors are selected from the group consisting of light intensity sensors and light color sensors.

8. A video display environment in accordance with claim 6, wherein the sensors are located in at least one position selected from the group consisting of adjacent to the video display, opposite the video display, and attached to a fixed table within the environment.

9. A video display environment in accordance with claim 1, further comprising lighting elements, disposed in the environment and interconnected to the lighting detection system, at least one of light intensity and color of the lighting elements being selectively adjustable via the lighting detection system in response to the positionally and temporally unique signals from the lighting sensor.

10. A method for calibrating lighting in a video display environment, comprising the steps of:

a) affixing a lighting sensor within the video display environment;

b) obtaining light signals from the sensor;

c) analyzing the light signals to determine a positionally and temporally unique lighting condition; and

d) adjusting devices in the environment to conform to a pre-selected lighting standard.

11. A method in accordance with claim 10, further comprising periodically repeating steps (b) through (d).

12. A method in accordance with claim 10, wherein the step of affixing a lighting sensor within the video display environment comprises affixing multiple sensors at fixed locations in the environment, the sensors being selected from the group consisting of light intensity sensors and light color sensors.

13. A method in accordance with claim 10, wherein the step of adjusting devices in the environment comprises adjusting, via a control system controllable from outside the environment, at least one of:

an intensity of a lighting fixture in the environment, a light color of a lighting fixture in the environment, sensing characteristics of a camera in the environment, and display characteristics of a video display in the environment.

14. A method in accordance with claim 10, wherein the step of adjusting devices in the environment comprises a person entering the environment to adjust or replace lighting elements therein.

15. A method in accordance with claim 10, wherein the step of analyzing the light signals comprises analyzing a reflectance signal representing reflectance of light from a surface of known reflective characteristics, and comparing the reflectance signal to a baseline reflectance signal to determine at least one of ambient light intensity and color in the environment.

16. A computer program product comprising machine readable program code for causing a computing device associated with a video display environment to perform the steps of:

a) obtaining signals from a lighting sensor at a fixed location within the video display environment;

b) analyzing the signals to determine a positionally and temporally unique lighting condition;

c) comparing the positionally and temporally unique lighting condition to a pre-selected lighting standard; and

d) adjusting devices in the environment to substantially conform to the pre-selected lighting standard.

17. A program product in accordance with claim 16, wherein the step of obtaining signals from a lighting sensor at a fixed location within the video display environment comprises obtaining signals from a plurality of lighting sensors located at fixed locations within the environment.

18. A program product in accordance with claim 16, wherein the step of obtaining signals from a lighting sensor at a fixed location within the video display environment comprises obtaining a signal representing at least one of light intensity and light color.

19. A program product in accordance with claim 16, wherein the step of adjusting devices in the environment comprises remotely adjusting at least one of:

an intensity of a lighting fixture in the environment, a light color of a lighting fixture in the environment, sensing characteristics of a camera in the environment, and display characteristics of a video display in the environment.

20. A program product in accordance with claim 16, wherein the step of adjusting devices in the environment to substantially conform to the pre-selected lighting standard comprises electronically sending a notice prompting a person to enter the environment to adjust or replace lighting elements therein.