Light-emitting diode based products

• US 7,186,003 B2
• Filed: 03/13/2001
• Issued: 03/06/2007
• Est. Priority Date: 08/26/1997
• Status: Expired due to Fees

• Current Assignee: Philips Lighting North America Corporation (Koninklijke Philips N.V.)
• Original Assignee: Color Kinetics Incorporated (Signify N.V.)
• Inventors: Lys, Ihor A., Piepgras, Colin, Mueller, George G., Dowling, Kevin J., Morgan, Frederick M., Blackwell, Michael K., Geary, Dawn, Osterhout, Ralph, Ducharme, Alfred
• Primary Examiner(s): VU, DAVID HUNG
• Application Number:
  US09/805,368
• Publication Number:
  US 20020048169A1
• Time in Patent Office: 2,184 Days
• Field of Search: 315/219, 315/224, 315/209.R, 315/292, 315/295, 362/234, 362/253, 359/290, 359/291, 359/292, 359/293, 359/297, 359/298, 359/299
• US Class Current: 362/234
• CPC Class Codes: F21S 8/035 by means of plugging into a wall outlet, e.g. night light
• CPC Class Codes: F21W 2121/006 for illumination or simulation of snowy or iced items, e.g. icicle
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/175 by remote control

Abstract

High-brightness LEDs, combined with a processor for control, can produce a variety of pleasing effects for display and illumination. A system disclosed herein uses high-brightness, processor-controlled LEDs in combination with diffuse materials to produce color-changing effects. The systems described herein may be usefully employed to bring autonomous color-changing ability and effects to a variety of consumer products and other household items. The system may also include sensors so that the illumination of the LEDs might change in response to environmental conditions or a user input. Additionally, the system may include an interface to a network, so that the illumination of the LEDs may be controlled via the network.

Claims

1. A lighting system, comprising:

two or more LEDs configured to produce at least two different spectra of radiation;

a processor including a memory;

a controller configured to control power delivered to at least one of the two or more LEDs, the controller being responsive to at least one signal communicated to the controller from the processor;

a light-transmissive material, wherein the two or more LEDs are arranged such that at least some of the radiation passes through the light-transmissive material and exits as variable color radiation; and

a user interface coupled to the processor, wherein;

the user interface supplies a user interface signal to the processor, the user interface signal including at least one of a logic high signal and a logic low signal; and

the processor selects a program from the memory upon receipt of the user interface signal, wherein the program, when executed by the processor, controls at least a color of the variable color radiation.

2. The lighting system of claim 1, wherein the processor adjusts a parameter of the program upon receipt of the user interface signal.

5. The lighting system of claim 1, further comprising a housing wherein the two or more LEDs, the processor, the memory, and the controller are substantially enclosed by the housing, and wherein the user interface and the light-transmissive material are integrated with the housing.

6. The lighting system of claim 1, further comprising:

a first housing configured to substantially enclose the processor, the memory, and the controller; and

a second housing configured to substantially enclose the at least two LEDs, wherein the light-transmissive material is integrated with the second housing.

7. The lighting system of claim 1, wherein the light-transmissive material comprises at least one of a semitransparent material, a translucent material, a semitransparent material and a transparent material.

8. The lighting system of claim 1, wherein the controller comprises at least one of a pulse width modulator, a pulse amplitude modulator, a pulse displacement modulator, a resistor ladder, a current source, a voltage source, a voltage ladder, a switch, a transistor, and a voltage controller.

9. The lighting system of claim 1, wherein the user interface comprises an encoder configured to provide an encoder signal as the user interface signal, and wherein the processor changes at least one of the program and a parameter of the program upon receipt of the encoder signal.

10. The lighting system of claim 9, wherein the user interface further comprises at least one of a dial, a button, a switch, a slider, a variable switch, and a variable selector.

11. The lighting system of claim 1 or 2, wherein the user interface further comprises at least one of a button, a switch, a slider, a variable switch, and a variable selector.

12. The lighting system of claim 1, further comprising an analog to digital converter, wherein the user interface generates an analog signal and the analog to digital converter converts the analog signal to a digital signal, and wherein the digital signal is communicated to the processor.

13. The lighting system of claim 12, wherein the processor selects the program from the memory upon receipt of the digital signal.

14. The lighting system of claim 12, wherein the processor adjusts a parameter of the program upon receipt of the digital signal.

15. The lighting system of claim 1, further comprising a display coupled to the processor.

16. The lighting system of claim 15, wherein the display is at least one of an LCD screen, a plasma screen, a monochrome screen, and a color screen.

17. The lighting system of claim 16, wherein the display is configured to provide information regarding at least one of the selected program, a program setting, a program parameter, available programs stored in the memory, a time, a date, and control information.

18. The lighting system of claim 1, wherein the user interface is remotely located from the processor.

19. The lighting system of claim 18, wherein communication of the user interface signal from the user interface to the processor is accomplished through at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a wire transmission, a cable transmission, and a network transmission.

20. The lighting system of claim 1, wherein the processor is at least one of a controller, an addressable controller, a microprocessor, a microcontroller, an addressable microprocessor, a computer, a programmable processor, a programmable controller, a dedicated processor, a dedicated controller, and an integrated circuit.

21. The lighting system of claim 20, further comprising a receiver for receiving at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a network transmission, a wire transmission, and a cable transmission, wherein the receiver is coupled to the processor.

22. The lighting system of claim 20, further comprising:

an analog to digital converter configured to communicate a digital signal to the processor;

and a receiver for receiving at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a network transmission, a wire transmission, and a cable transmission, wherein the receiver communicates an analog signal to the analog to digital converter.

23. The system of claim 1, wherein the user interface signal represents at least one power cycle applied to the lighting system.

24. The lighting system of claim 23, wherein the at least one power cycle includes turning power to the lighting system off and then back on within a predetermined period of time via the user interface.

31. The lighting system of claim 1, wherein

the processor receives the user interface signal over at least one wireless communication link.

32. The lighting system of claim 31, wherein the at least one wireless communication link is configured to support at least one of a radio frequency transmission, an infrared transmission, a microwave transmission, and an acoustic transmission.

33. The lighting system of claim 32, wherein the at least one wireless communication link is configured to support at least one radio frequency transmission, and wherein the apparatus further comprises a radio transceiver coupled to the processor to receive the user interface signal.

34. The lighting system of claim 31, wherein the controller is configured vary the variable color radiation based at least in part on the user interface signal.

35. The lighting system of claim 31, wherein the processor is an addressable processor, wherein the at least one wireless communication link forms part of a wireless communication network, and wherein the user interface signal includes information particularly identifying the addressable processor.

36. The lighting system of claim 31, wherein the processor is further configured to modify at least one variable of the selected program based on the user interface signal.

37. The lighting system of claim 1, wherein the memory stores a plurality of lighting programs, wherein the processor is configured to select one lighting program of the plurality of lighting programs based on the user interface signal, and wherein the controller is configured to control the at least one variable color radiation based at least in part on execution by the processor of the selected one lighting program.

38. The lighting system of claim 37, wherein the processor is further configured to modify at least one variable of the selected one lighting program based on the user interface signal.

3. A lighting system comprising:

two or more LEDs configured to produce at least two different spectra of radiation;

a processor including a memory;

a controller configured to control power delivered to at least one of the two or more LEDs, the controller being responsive to at least one signal communicated to the controller from the processor;

a light-transmissive material, wherein the two or more LEDs are arranged such that at least some of the radiation passes through the light-transmissive material; and

a user interface coupled to the processor, wherein;

the user interface supplies a user interface signal to the processor, the user interface signal including at least one of a logic high signal and a logic low signal; and

the processor selects a program from the memory upon receipt of the user interface signal, wherein the processor further comprises a timer configured to measure a duration of the user interface signal, and wherein the processor adjusts a parameter of the program upon receipt of a predetermined duration of the user interface signal.

4. The lighting system of claim 3, wherein the parameter continues to change until the user interface signal changes.

25. A lighting system, comprising:

two or more LEDs configured to produce at least two different spectra of radiation;

a processor;

a controller configured to control power delivered to at least one of the two or more LEDs, the controller being responsive to at least one signal communicated to the controller from the processor;

a light-transmissive material, wherein the two or more LEDs are arranged such that at least some of the radiation passes through the light-transmissive material;

an analog to digital converter configured to communicate a digital signal to the processor; and

a receiver for receiving at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a network transmission, a wire transmission, and a cable transmission, wherein the receiver communicates an analog signal to the analog to digital converter.

26. The lighting system of claim 25, further comprising a remote user interface configured to communicate a user interface signal to the receiver via the at least one of the electromagnetic transmission, the radio frequency transmission, the infrared transmission, the microwave transmission, the acoustic transmission, the network transmission, the wire transmission, and the cable transmission.

27. The lighting system of claim 26, wherein the processor is configured to control the controller so as to change at least one parameter of the radiation in response to the user interface signal.

28. The lighting system of claim 27, wherein the processor includes a memory, and wherein the processor is configured to select one program of a plurality of programs from the memory in response to the user interface signal.

29. The lighting system of claim 28, wherein the processor is configured to adjust a parameter of the selected one program in response to the user interface signal.

30. The lighting system of claim 28, wherein the processor further comprises a timer configured to measure a duration of the digital signal representing the user interface signal, and wherein the processor adjusts a parameter of the selected one program upon receipt of a predetermined duration of the digital signal.

39. A lighting method, comprising acts of:

A) producing at least two different spectra of radiation from two or more LEDs;

B) controlling power delivered to at least one of the two or more LEDs in response to at least one signal communicated from a processor;

C) passing at least some of the radiation through a light-transmissive material to provide variable color radiation;

D) selecting a program from a memory of the processor upon receipt of a user interface signal that includes at least one of a logic high signal and a logic low signal; and

E) executing the program to generate the at least one signal communicated by the processor so as to control at least a color of the variable color radiation.

40. The lighting method of claim 39, further comprising an act of adjusting a parameter of the program upon receipt of the user interface signal.

42. The lighting method of claim 39, further comprising an act of continually changing a parameter of the program until the user interface signal changes.

43. The lighting method of claim 39, wherein the act B) comprises an act of controlling the power delivered to the at least one of the two LEDs via at least one of a pulse width modulation technique, a pulse amplitude modulation technique, a pulse displacement modulation technique, a resistor ladder, a current source, a voltage source, a voltage ladder, a switch, a transistor, and a voltage controller.

44. The lighting method of claim 39, further comprising an act of displaying information regarding at least one of the selected program, a program setting, a program parameter, available programs stored in the memory, a time, a date, and control information.

45. The lighting method of claim 39, further comprising an act communicating the user interface signal from the user interface to the processor via at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a wire transmission, a cable transmission, and a network transmission.

46. The lighting method of claim 39, wherein the user interface signal represents,

at least one power cycle applied to the processor.

47. The lighting method of claim 46, further comprising an act of turning an operating power off and then back on within a predetermined period of time so as to generate the at least one power cycle.

49. The lighting method of claim 39,

wherein the act D) comprises communicating the user interface signal to the processor over at least one wireless communication link.

50. The method of claim 49, wherein the at least one wireless communication link is configured to support at least one of a radio frequency transmission, an infrared transmission, a microwave transmission, and an acoustic transmission.

51. The method of claim 50, wherein the at least one wireless communication link is configured to support at least one radio frequency transmission, and wherein the method further comprises an act of:

receiving the user interface signal via the at least one radio frequency transmission.

52. The method of claim 49, wherein the act E) includes an act of:

varying the color of the variable color radiation based at least in part on the user interface signal.

53. The method of claim 49, further including an act of:

modifying at least one variable of the selected program based on the user interface signal.

54. The method of claim 39, wherein the program includes a plurality of programs, and wherein the act D) further includes an act of:

selecting one program of the plurality of programs, based on the user interface signal, for execution in the act E).

55. The method of claim 54, further including an act of:

modifying at least one variable of the selected one program based on the user interface signal.

56. The method of claim 49, further comprising an act of:

generating the user interface signal based on user operation of at least one remote user interface coupled to the at least one wireless communication link.

57. The method of claim 56, wherein the at least one remote user interface comprises at least one of dial, a button, a switch, a slider, a variable switch, and a variable selector.

41. A lighting method comprising acts of:

A) producing at least two different spectra of radiation from two or more LEDs;

B) controlling power delivered to at least one of the two or more LEDs in response to at least one signal communicated from a processor;

C) passing at least some of the radiation through a light-transmissive material;

D) selecting a program from a memory of the processor upon receipt of a user interface signal that includes at least one of a logic high signal and a logic low signal;

E) measuring a duration of the user interface signal; and

F) adjusting a parameter of the program upon receipt of a predetermined duration of the user interface signal.

48. A lighting method, comprising acts of:

producing at least two different spectra of radiation from two or more LEDs;

controlling power delivered to at least one of the two or more LEDs in response to at least one signal communicated from a processor;

passing at least some of the radiation through a light-transmissive material;

generating an analog signal in response to receiving at least one of an electromagnetic transmission, a radio frequency transmission, an infrared transmission, a microwave transmission, an acoustic transmission, a network transmission, a wire transmission, and a cable transmission;

converting the analog signal into a digital signal; and

communicating the digital signal to the processor.