Lamp control circuit and method of driving a lamp

• US 8,143,803 B2
• Filed: 05/31/2007
• Issued: 03/27/2012
• Est. Priority Date: 06/02/2006
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Beij, Marcel, Wernars, Johannes Petrus, Hulshof, Jozef Johannes Maria
• Primary Examiner(s): Le, Tung X
• Application Number:
  US12/302,300
• Publication Number:
  US 20090167204A1
• Time in Patent Office: 1,762 Days
• Field of Search: 315/149, 315/151, 315157-159, 315/291, 315/294, 315/297, 315/307
• US Class Current: 315/291
• CPC Class Codes: H05B 41/3921 with possibility of light intensity variations
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

In a method of driving a lamp using a lamp control circuit, the lamp control circuit comprises a communication circuit and a lamp driving circuit. The lamp driving circuit is configured to drive a lamp in accordance with a number of lamp operating parameters. The method comprises providing a lamp operating parameter to a memory of the communication circuit; providing a supply voltage to the lamp driving circuit; and supplying the lamp operating parameter from the memory to the lamp driving circuit. Then, driving the lamp by the lamp driving circuit corresponding to the supplied lamp operating parameter In the lamp control circuit, the communication circuit comprises a memory and is configured to supply the lamp operating parameter to the lamp driving circuit, when the lamp driving circuit is supplied with a supply voltage. In an embodiment, the lamp operating parameter may be supplied to the memory when no supply voltage is supplied to the lamp control circuit.

Claims

1. Method of driving a lamp using a lamp control circuit, the lamp control circuit comprising a communication circuit and a lamp driving circuit, the method comprising

providing a lamp operating parameter to a memory of the communication circuit;

providing a supply voltage to the lamp driving circuit;

supplying the lamp operating parameter from the memory to the lamp driving circuit; and

driving the lamp by the lamp driving circuit corresponding to the supplied lamp operating parameter, wherein the communication circuit is configured for receiving the lamp operating parameter when no supply voltage is supplied to the lamp driving circuit.

2. Lamp control circuit for driving a lamp, the lamp control circuit comprising a lamp driving circuit for supplying power to the lamp and a communication circuit for receiving a lamp operating parameter, wherein the communication circuit comprises a memory and is configured to supply the lamp operating parameter to the lamp driving circuit, when the lamp driving circuit is supplied with a supply voltage, wherein the communication circuit is configured for receiving the lamp operating parameter when no supply voltage is supplied to the lamp driving circuit.

3. Lamp control circuit according to claim 2, wherein the communication circuit is configured for wireless communication.

4. Lamp control circuit according to claim 3, wherein the communication circuit comprises a RFID transponder operatively connected to the memory for storing a parameter received by the RFID transponder in the memory.

5. Lamp control circuit according to claim 2, wherein the memory has a first port for a receiving an operating parameter from an external device and a second port for supplying an operating parameter to the lamp driving circuit.

6. Lamp control circuit according to claim 2, wherein the communication circuit is configured to receive a status parameter from the lamp driving circuit and to store the status parameter in the memory and is configured to supply the stored status parameter to an external device.

7. System for controlling a lamp, the system comprising:

a lamp control circuit according to claim 2;

an external control device configured for communicating an operating parameter to the communication circuit of the lamp control circuit.