Lighting system and control method thereof

• US 8,427,274 B2
• Filed: 12/24/2008
• Issued: 04/23/2013
• Est. Priority Date: 12/27/2007
• Status: Active Grant

• Current Assignee: Crowd Pixie, LLC, SAJE Holdings Incorporated
• Original Assignee: SAJE Holdings Incorporated
• Inventors: Jones, Scott A., Huang, Zhen, Bonham, Paul W., Li, Chuan, Jiles, Cameron D.
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): Barakat, Mohamed
• Application Number:
  US12/344,054
• Publication Number:
  US 20090167483A1
• Time in Patent Office: 1,581 Days
• Field of Search: 340/3.7, 340/3.1, 345/156, 700/94
• US Class Current: 340/3.7
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

The present invention is related to a method, system and apparatus, in particular, a lighting system and method of controlling the lighting system, comprising a computer readable medium and a programmable device capable of controlling and manipulating individually addressable lights to realize a visual display at a pixel level.

Claims

1. A method of controlling a plurality of lighting elements, comprising:

assigning an address to a lighting element;

capturing an image of the lighting element during simultaneous emission of light by at least two of the lighting elements;

detecting a spatial location of the lighting element assigned to the address based on the image information;

determining the spatial location of the lighting element based on a pattern of addresses which causes the lighting element to emit light and a sequence of images including the image of the lighting element; and

selectively controlling the lighting elements based on a display request.

2. The method according to claim 1, wherein the display request is from a user.

3. The method according to claim 1, wherein the detecting includes determining whether the pattern illuminates a sensor included in the lighting element.

4. The method according to claim 3, comprising:

mapping graphic to a subset of the lighting elements; and

displaying the graphic by controlling the subset in accordance with the display request.

5. The method according to claim 3, comprising:

capturing images of the lighting elements continuously; and

,

converting the images to a format that is enabled to be manipulated on a singular frame level.

6. The method according to claim 5, wherein the capturing obtains the sequence of images on a time base which is uncorrelated to a device controlling the pattern.

7. The method according to claim 5, wherein the capturing obtains the sequence of images synchronized to the pattern from a pre-determined direction.

8. The method according to claim 1, comprising:

synchronizing a timing of control of the lighting element with a data acquisition rate of a device acquiring the image.

9. The method according to claim 8, wherein the display request identifies the device.

10. The method according to claim 1, comprising:

analyzing a set of images and determining the illumination response of the lighting element based on the set.

11. The method according to claim 1, wherein information of the locations of the lighting elements is displayed to a user via a graphical user interface wherein the user may correct the spatial location detected for the lighting element.

12. The method according to claim 2, comprising:

outputting a graphical representation of an expected display resulting from the controlling of the lighting elements based on the display request.

13. The method according to claim 1, wherein the lighting elements are controlled based on groups of addresses assigned based on a physical interface of the lighting elements.

14. The method according to claim 1, wherein the detecting includes manipulating emission of light of by the visual elements based on a temporal and topologic sequence of addresses.

15. The method according to claim 14, wherein the sequence is based on a parallel calibration algorithm which minimizes a number of image frames required to determine the location.

16. The method according to claim 6, wherein the lighting elements are detected based on application of one of a pixel difference threshold value, a pixel intensity threshold, and a pixel average multiplier, to a set in the sequence of images to obtain temporal synchronization to the pattern and a representative pattern locating the visual elements is created based on the synchronization.

17. The method according to claim 1, wherein the lighting elements include light emitting semiconductor devices.

18. The method according to claim 17, wherein the lighting element includes a liquid crystal device and a light emitting device.

19. A system for controlling lighting elements, comprising:

a user system transmitting a display request; and

a controller controlling the lighting elements based on the display request, a table correlating an address assigned to a lighting element to a detected spatial location of the lighting element, and a modulation function assigned to the lighting element and determining the location and the modulation function based on analysis of a sequence of images of simultaneous emission of light by two or more of the lighting elements and determining the spatial location of the lighting element based on a pattern of addresses which causes the lighting element to emit light and a sequence of images including an image of the lighting element.

20. The system according to claim 19, wherein the system comprises a composite of lighting elements including lighting elements comprising a liquid crystal device and a light emitting device.

21. The system according to claim 20, wherein the lighting elements comprising the display unit include a lighting element comprising LEDs including infrared or ultraviolet LEDs and a light sensor.

22. The lighting system according to claim 19, wherein the display request is a sequence of images from a live source.

23. The lighting system according to claim 19, comprising:

synchronizing a timing of the emission of light by the visual elements with a device acquiring the sequence of images information, and the device is indicated by the controller.

24. A non-transitory computer readable storage medium having stored therein a program to cause a computer to execute an operation comprising:

detecting a spatial location and a brightness function associated with an address of a variably distributed lighting elements;

determining the spatial location of the lighting element based on a pattern of addresses which causes the lighting element to emit light and a sequence of images including the image of the lighting element during simultaneous emission of light by lighting elements in a pattern including two or more lighting elements;

the lighting element including a light emitter and a liquid crystal device; and

selectively controlling the lighting element based on a display request.

25. The non-transitory computer readable medium according to claim 24, the operation comprising:

identifying positions of the lighting elements based on a predetermined addressing and modulation sequence as part of the detecting;

mapping a pattern to the positions of the lighting elements based on an editable element position map presented to a user; and

displaying an image based on the pattern by controlling the lighting elements in accordance with the display request.

26. An apparatus for controlling lighting elements

comprising:

a controller powered by an AC or DC power source, determining an address, a spatial location and an illumination control function associated with a lighting element based on an image of the lighting element during simultaneous emission of light by at least two of the lighting elements and detecting the spatial location of the lighting element assigned to the address based on the image information and determining the spatial location of the lighting element based on a sequence of images including the image of the lighting element, which sequence of images are acquired while a calibration sequence which comprises a pattern of address which causes the lighting element to emit light is executed, executing the calibration sequence which simultaneously emit light from a plurality of lighting elements for a time interval based on a clock rate;

a fixture comprising;

a plurality of lighting elements enabled to be controlled by the controller and located at varying locations determined by a user; and

an image acquisition device obtaining the images of the visual element based on a frequency uncorrelated to the clock rate.