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Self-adjusting lighting driver for driving lighting sources and lighting unit including self-adjusting lighting driver

US9215768B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9215768-B2
Application numberUS-201314406840-A
CountryUS
Kind codeB2
Filing dateMay 28, 2013
Priority dateJun 14, 2012
Publication dateDec 15, 2015
Grant dateDec 15, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A lighting unit ( 100 ) includes light emitting diode (LED) modules ( 120, 300 ) and a lighting driver ( 110, 200 ) connected to the LED modules. Each LED module includes LEDs ( 323 ) and an identification current source ( 324 ) supplying an identification current to an identification current output node ( 180, 380 ). All of the identification current output nodes are connected together to supply a total identification current having a magnitude which changes in response to the number of LED modules that are connected to the lighting driver. The lighting driver includes: a controllable current source ( 220 & 250 ) to supply an LED driving current to the LEDs of the LED modules, and a controller ( 230 ) that responds to the total identification current to control the controllable current source to supply the LED driving current at a magnitude which changes in response to the number of LED modules that are connected to the lighting driver.

First claim

Opening claim text (preview).

The invention claimed is: 1. A system, comprising: a plurality of light emitting diode (LED) modules; and a lighting driver operatively connected to each of the plurality of LED modules, wherein each LED module includes: a corresponding plurality of LEDs, a driving current input node configured to receive a driving current and to supply the driving current to the plurality of LEDs, an LED module identification current output node, and a corresponding identification cur…

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Frequently asked questions

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What does patent US9215768B2 cover?
A lighting unit ( 100 ) includes light emitting diode (LED) modules ( 120, 300 ) and a lighting driver ( 110, 200 ) connected to the LED modules. Each LED module includes LEDs ( 323 ) and an identification current source ( 324 ) supplying an identification current to an identification current output node ( 180, 380 ). All of the identification current output nodes are connected together to supp…
Who is the assignee on this patent?
Koninkl Philips Nv
What technology area does this patent fall under?
Primary CPC classification H05B33/0815. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).