IP Library Granted Patent US 8,933,648
Granted Patent B1
US 8,933,648 · App. 14/037,001 · Granted Jan 13, 2015

Systems and methods for selecting a compatibility mode of operation for a lamp assembly

Inventors: Richard Dean Putman (Dripping Springs, TX); Yanhui Xie (Austin, TX); Michael Kost (Austin, TX); Jean Charles Pina (Austin, TX)
Assignee: Cirrus Logic, Inc.
H05B37/02
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Quick Facts
Patent No.
US 8,933,648
App. No.
14/037,001
Granted
Jan 13, 2015
Kind
B1
Abstract

According to systems and methods of this disclosure, a controller may be configured to: operate in a first compatibility mode of operation, determine from an input signal of the lamp assembly during operation in the first compatibility mode whether the first compatibility mode of operation provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, select the first compatibility mode of operation from a plurality of modes of operation as a compatibility mode responsive to determining that the first compatibility mode of operation provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, and select a second compatibility mode of operation from the plurality of modes of operation as the compatibility mode responsive to determining that the first compatibility mode of operation does not provide compatibility between the lamp assembly and the power infrastructure to which it is coupled.

Claims (36)

1. An apparatus comprising:

a controller for selecting a compatibility mode of a lamp assembly, wherein the compatibility mode provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, and the power infrastructure includes at least one of a type of dimmer and a type of transformer and coupled to the lamp assembly, and wherein the controller is configured to:

operate in a first compatibility mode of operation;

determine from an input signal of the lamp assembly during operation in the first compatibility mode of operation whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure;

select the first compatibility mode of operation from a plurality of modes of operation as a compatibility mode responsive to determining that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure; and

select a second compatibility mode of operation from the plurality of modes of operation as the compatibility mode responsive to determining that the first compatibility mode of operation does not provide compatibility between the lamp assembly and the power infrastructure.

2. The apparatus of claim 1 , wherein the controller is configured to determine whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure based on whether, during operation in the first compatibility mode of operation, the controller is able to synchronize itself to the input signal.

3. The apparatus of claim 1 , wherein the controller is configured to determine whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure based on whether, during operation in the first compatibility mode of operation, the input signal indicates an inability of an electronic transformer integral to the power infrastructure to maintain oscillation in the first compatibility mode of operation.

4. The apparatus of claim 1 , wherein the controller is configured to determine whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure based on a measured half-line cycle of the input signal during operation in the first compatibility mode of operation.

5. The apparatus of claim 4 , wherein the controller is configured to determine that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to the measured half-line cycle being less than a predetermined maximum threshold.

6. The apparatus of claim 4 , wherein the controller is configured to determine that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to the measured half-line cycle being more than a predetermined minimum threshold.

7. The apparatus of claim 4 , wherein the controller is configured to determine that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to a magnitude of a difference between the measured half-line cycle and a previously-measured half-line cycle being less than a predetermined maximum threshold.

8. The apparatus of claim 1 , wherein the lamp assembly comprises a light-emitting diode lamp.

9. The apparatus of claim 1 , wherein the lamp assembly comprises a multifaceted reflector form factor.

10. A method for selecting a compatibility mode of a lamp assembly, wherein the compatibility mode provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, and the power infrastructure includes at least one of a type of dimmer and a type of transformer and coupled to the lamp assembly, and the method comprising:

operating the lamp assembly in a first compatibility mode of operation;

determining from an input signal of the lamp assembly during operation in the first compatibility mode of operation whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure;

selecting the first compatibility mode of operation from a plurality of modes of operation as a compatibility mode responsive to determining that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure; and

selecting a second compatibility mode of operation from the plurality of modes of operation as the compatibility mode responsive to determining that the first compatibility mode of operation does not provide compatibility between the lamp assembly and the power infrastructure.

11. The method of claim 10 , wherein determining whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure comprises determining whether, during operation in the first compatibility mode of operation, the lamp assembly is able to synchronize itself to the input signal.

12. The method of claim 10 , wherein determining whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure comprises determining whether the input signal indicates an inability of an electronic transformer integral to the power infrastructure to maintain oscillation in the first compatibility mode of operation.

13. The method of claim 10 , wherein determining whether the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure comprises measuring a measured half-line cycle of the input signal during operation in the first compatibility mode of operation.

14. The method of claim 13 , further comprising determining that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to the measured half-line cycle being less than a predetermined maximum threshold.

15. The method of claim 13 , further comprising determining that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to the measured half-line cycle being more than a predetermined minimum threshold.

16. The method of claim 13 , further comprising determining that the first compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure responsive to a magnitude of a difference between the measured half-line cycle and a previously-measured half-line cycle being less than a predetermined maximum threshold.

17. The method of claim 10 , wherein the lamp assembly comprises a light-emitting diode lamp.

18. The method of claim 10 , wherein the lamp assembly comprises a multifaceted reflector form factor.

19. An apparatus comprising:

a controller for selecting a compatibility mode of a lamp assembly, wherein the compatibility mode provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, and the power infrastructure includes at least one of a type of dimmer and a type of transformer and coupled to the lamp assembly, and wherein the controller is configured to:

sequentially operate the lamp assembly in at least a first compatibility mode of operation and a second compatibility mode of operation;

determine whether either of the first compatibility mode of operation or the second compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure; and

select a compatibility mode of operation based on whether either of the first compatibility mode of operation or the second compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure.

20. A method for selecting a compatibility mode of a lamp assembly, wherein the compatibility mode provides compatibility between the lamp assembly and a power infrastructure to which it is coupled, and the power infrastructure includes at least one of a type of dimmer and a type of transformer and coupled to the lamp assembly, and the method comprises:

sequentially operating the lamp assembly in at least a first compatibility mode of operation and a second compatibility mode of operation;

determining whether either of the first compatibility mode of operation or the second compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure; and

selecting a compatibility mode of operation based on whether either of the first compatibility mode of operation or the second compatibility mode of operation provides compatibility between the lamp assembly and the power infrastructure.

Assignments (4)
CHANGE OF NAME Recorded Oct 28, 2019
From: PHILIPS LIGHTING HOLDING B.V.
To: SIGNIFY HOLDING B.V.
Reel/Frame 050837/0576 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2016
From: KONINKLIJKE PHILIPS N.V.
To: PHILIPS LIGHTING HOLDING B.V.
Reel/Frame 041170/0806 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 20, 2016
From: CIRRUS LOGIC, INC.
To: KONINKLIJKE PHILIPS N.V.
Reel/Frame 037563/0720 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 8, 2013
From: PUTMAN, RICHARD DEAN; XIE, YANHUI; KOST, MICHAEL A.; PINA, JEAN CHARLES
To: CIRRUS LOGIC, INC.
Reel/Frame 031570/0491 →
Continuity (4)
Continuation In Part 13799329 · Mar 13, 2013
Provisional Application 61831300 · Jun 5, 2013
Provisional Application 61673111 · Jul 18, 2012
Provisional Application 61667685 · Jul 3, 2012