TASK LIGHT BASED SYSTEM AND GESTURE CONTROL

• US 20150181679A1
• Filed: 12/23/2013
• Published: 06/25/2015
• Est. Priority Date: 12/23/2013
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: LIAO, Miao, FENG, Xiao-Fan, CHEN, Xu
• Granted Patent: US 9,622,322 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05B 47/125 by using cameras
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A system that determines the task of the viewer and/or gestures made by the user. Based upon the determined task and/or the gestures, the lighting provided to the viewer may be modified.

Claims

1. A method for modifying the illumination of a lighting system comprising:

(a) sensing a set of images using an image capture device of a region of interest in the vicinity of a viewer;

(b) identifying a hand of said viewer in said region of interest;

(c) discriminating said hand to identify a shape of said hand;

(d) in response to said identifying said shape of said hand selectively modifying said illumination.

2. The method of claim 1 wherein said lighting system includes an integrated said image capture device and said illumination.

3. The method of claim 1 wherein said modifying said illuminations includes an automatic mode and a manual mode

4. The method of claim 3 wherein changing from said automatic mode to said manual mode is based upon a gesture.

5. The method of claim 4 wherein changing from said manual mode is based upon discriminating a task.

6. The method of claim 1 wherein said discriminated said shape of said hand is a “

Gesture 8”

.

7. The method of claim 1 wherein said discriminated said shape of said hand is a “

5 Finger Gesture”

of one said hand.

8. The method of claim 1 wherein said discriminated said shape of said hand is a “

sliding gesture 8”

.

9. The method of claim 1 wherein said discriminated said shape of said hand is a pair of “

5 Finger Gesture”

of two of said hand.

20. The method of claim 1 wherein said modifying said illumination includes at least one of increasing intensity, decreasing intensity, modifying the color spectrum, modifying spatial distribution, and modifying timing or duration.

10. A method for modifying the illumination of a lighting system comprising:

(a) sensing a set of images of a region of interest in the vicinity of a viewer;

(b) discriminating a semantic meaning of a viewer'"'"'s task in said region of interest between (1) at least one of reading and writing and (2) using a computer;

(c) in response to said discriminating said semantic meaning of said task of said viewer selectively modifying said illumination.

11. The method of claim 10 wherein said semantic meaning is said viewer reading a menu.

12. The method of claim 11 wherein said semantic meaning is based upon sensing reflective material on said menu.

13. The method of claim 10 wherein said selective modifying said illumination is based upon a previous illumination of said lighting system.

14. The method of claim 10 wherein said region of interest is defined by said viewer.

15. The method of claim 10 wherein said discriminating said semantic meaning of said task of said viewer in said region of interest as said at least one of reading and writing is based upon the presence of a hand of said viewer in said region of interest.

16. The method of claim 15 wherein said presence of said hand is based upon skin color detection and motion detection.

17. The method of claim 16 wherein said presence is based upon a template.

18. The method of claim 10 wherein said selectively modifying said illumination is based upon ambient lighting.

19. The method of claim 18 wherein said ambient lighting is based upon illumination sensed by said imaging device.

21. The method of claim 10 wherein said modifying said illumination includes at least one of increasing intensity, decreasing intensity, modifying the color spectrum, modifying spatial distribution, and modifying timing or duration.

22. A method for modifying the spectra of a lighting system comprising:

(a) sensing a set of images of a region of interest in the vicinity of a viewer;

(b) discriminating a semantic meaning of a viewer'"'"'s task in said region of interest between (1) at least one of reading and writing and (2) using a computer;

(c) in response to said discriminating said semantic meaning of said task of said viewer and further based upon a temporal factor selectively modifying said spectra.

23. The method of claim 22 wherein said temporal factor is a time of day.

24. The method of claim 23 wherein an earlier said time of day uses an increased CCT.

25. The method of claim 24 wherein a later time of day uses a decreased CCT.

26. The method of claim 22 wherein said modifying said spectra is based upon using a multi phosphor lighting system.

27. The method of claim 26 wherein said multi phosphor lighting system includes using a blue light source and two other phosphors.