Methods and apparatus for controlling devices in a networked lighting system

• US 7,253,566 B2
• Filed: 05/10/2004
• Issued: 08/07/2007
• 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., Morgan, Frederick M.
• Primary Examiner(s): Chen; Shih-Chao
• Assistant Examiner(s): A, MINH D
• Application Number:
  US10/842,257
• Publication Number:
  US 20040240890A1
• Time in Patent Office: 1,184 Days
• Field of Search: 315/291, 315/307, 315/224, 235/462.31, 235/469
• US Class Current: 315/291
• CPC Class Codes: F21S 4/10 with light sources attached to loose electric cables, e.g. Christmas tree lights
• CPC Class Codes: F21V 21/002 making direct electrical contact, e.g. by piercing F21V21/35 takes precedence
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01R 4/24 Connections using contact members penetrating or cutting insulation or cable strands
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: H05B 47/18 via data-bus transmission

Abstract

Methods and apparatus for computer-based control of light sources in a networked lighting system. In one example, a plurality of LED-based lighting systems are arranged as computer controllable “light strings.” Applications contemplated for such light strings include, but are not limited to, decorative and entertainment-oriented lighting applications (e.g., Christmas tree lights, display lights, theme park lighting, video and other game arcade lighting, etc.). Via computer control, one or more such light strings may provide a variety of complex temporal and color-changing lighting effects. In one example, lighting data is communicated in a given light string in a serial manner, according to a variety of different data transmission and processing schemes. In another example, individual lighting systems of a light string are coupled together via a variety of different conduit configurations to provide for easy coupling and arrangement of multiple light sources constituting the light string. In yet another example, small LED-based lighting systems capable of being arranged in a light string configuration are manufactured as integrated circuits including data processing circuitry and control circuitry for LED light sources, and are packaged along with LEDs for convenient coupling to a conduit to connect multiple lighting systems.

Claims

1. An apparatus, comprising:

a data recognition circuit adapted to process at least a first portion of a data stream received by the apparatus;

an illumination control circuit coupled to the data recognition circuit and adapted to generate at least one illumination control signal in response to the processed first portion of the data stream; and

an output circuit adapted to transmit from the apparatus at least a second portion of the data stream.

2. The apparatus of claim 1 wherein the data recognition circuit is further adapted to strip at least the first portion of data from the data stream.

3. The apparatus of claim 2 wherein the second portion of the data stream comprises unstripped data.

4. The apparatus of claim 1 wherein the data recognition circuit is further adapted to modify the first portion of data such that the first portion is identified as being read.

5. The apparatus of claim 4 wherein the data recognition circuit is adapted to modify the first portion of data with an extra bit.

6. The apparatus of claim 4 wherein the data recognition circuit is adapted to modify at least one bit of the first portion of data.

7. The apparatus of claim 1 wherein the first portion of the data stream comprises a leading data packet of the data stream.

8. The apparatus of claim 7 wherein the leading data packet comprises an leading unmodified data packet of the data stream.

9. The apparatus of claim 1 wherein the at least one illumination control signal comprises at least one LED control signal.

10. The apparatus of claim 9 wherein the at least one LED control signal comprises at least one of a PWM signal, pulse amplitude modulated signal, analog control signal;

current control signal; and

voltage control signal.

11. The apparatus of claim 9 wherein the at least one LED control signal comprises a plurality of LED control signals.

12. The apparatus of claim 1 wherein the illumination control signal comprises a non-LED control signal.

13. An apparatus, comprising:

a data recognition circuit adapted to process at least a first portion of a data stream received by the apparatus;

an illumination control circuit coupled to the data recognition circuit and adapted to generate at least one illumination control signal in response to the processed first portion of the data stream; and

an output circuit adapted to transmit from the apparatus at least a second portion of the data stream wherein;

the at least one illumination control signal comprises a plurality of LED control signals; and

the illumination control circuit is adapted to control a plurality of LEDs independently with the plurality of LED control signals.

14. The apparatus of claim 13 wherein the plurality of LEDs are adapted to produce at least two different colors.

15. The apparatus of claim 14 wherein the plurality of LEDs are adapted to produce red, green and blue light.

16. An apparatus, comprising:

a data recognition circuit adapted to process at least a first portion of a data stream received by the apparatus;

an illumination control circuit coupled to the data recognition circuit and adapted to generate at least one illumination control signal in response to the processed first portion of the data stream;

an output circuit adapted to transmit from the apparatus at least a second portion of the data stream; and

a power management circuit wherein the power management circuit is adapted to receive power from a power source, control the power from the power source and deliver adequate power to at least one other circuit in the apparatus.

17. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 10%.

18. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 20%.

19. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 30%.

20. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 40%.

21. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 50%.

22. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 60%.

23. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 70%.

24. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 80%.

25. The apparatus of claim 16 wherein the power management circuit is adapted to deliver adequate power when the power source varies by less than approximately 90%.

26. The apparatus of claim 16 wherein the at least one other circuit comprises the illumination control circuit.

27. The apparatus of claim 26 wherein the adequate power delivered to the illumination control circuit provides for substantially regulated control of an illumination source.

28. An apparatus, comprising:

a data recognition circuit adapted to process at least a first portion of a data stream received by the apparatus;

an illumination control circuit coupled to the data recognition circuit and adapted to generate at least one illumination control signal in response to the processed first portion of the data stream; and

an output circuit adapted to transmit from the apparatus at least a second portion of the data stream,

in combination with at least one other apparatus comprising a second data recognition circuit, a second illumination control circuit, and a second output circuit,

wherein each apparatus of the combination is arranged to communicate in a serial fashion with another apparatus of the combination.

29. The combination of claim 28 wherein each apparatus is adapted to control at least one LED.

30. The combination of claim 29 wherein each apparatus is associated with its own housing and the at least one LED is arranged in the housing.

31. The combination of claim 30 wherein for each apparatus, the housing is associated with an optic and at least one LED is optically associated with the optic.

32. The combination of claim 31 wherein the optic is adapted to diffuse light generated by the at least one LED.

33. The combination of claim 31 wherein the optics is adapted to transmit light generated by the at least one LED.

34. The combination of claim 29 wherein the at least one LED comprises a plurality of LEDs.

35. The combination of claim 34 wherein the plurality of LEDs comprises LEDs adapted to produce at least two different colors of light.

36. The combination of claim 35 wherein the at least two different colors of light comprise red, green and blue light.

37. An apparatus, comprising:

a data recognition circuit adapted to process at least a first portion of a data stream received by the apparatus;

an illumination control circuit coupled to the data recognition circuit and adapted to generate at least one illumination control signal in response to the processed first portion of the data stream; and

an output circuit adapted to transmit from the apparatus at least a second portion of the data stream,

wherein the apparatus is formed as an integrated circuit mounted on a platform, and wherein at least one LED is mounted on the platform.

38. The integrated circuit of claim 37 wherein the platform comprises a first side and a second side, wherein the integrated circuit is mounted on the first side and the at least one LED is mounted on the second side.

39. The integrated circuit of claim 38 wherein the at least one LED comprises a plurality of LEDs.

40. The integrated circuit of claim 39 wherein the illumination control circuit is adapted to independently control the plurality of LEDs.