Industry Patents
Patent: 7324076
Methods and Apparatus For Setting the Color Point of an LED Light Source
(Click image for PDF of full patent)
| Patent Number: |
7324076 |
| Title: |
Methods and Apparatus For Setting the Color Point of an LED Light Source |
| Abstract: |
In one embodiment, a user-selected color point is received. RGB
tristimulus values are then derived for the color point. It is also
determined whether the user-selected color point is outside a color
selection range of the LED light source and, if so, an error flag is set.
Pulse width modulated signals for a plurality of LED drivers for the LED
light source are also generated. In another embodiment, tristimulus
values representing a color of light produced by an LED light source are
received. The received tristimulus values are then compared to
tristimulus values corresponding to a user-identified color point. In
response to the comparison, pulse width modulated signals are generated
for a plurality of LED drivers for the LED light source. After a
predetermined number of repetitions of these actions, an error flag is
set if the user-selected color point has not been achieved by the LED
light source.
|
| Country of Issue: |
US |
| First Named Inventor: |
Lee, Lim, Jaffar |
| Assignee: |
Avago Technologies |
| Continuation or Divisional of: |
|
| International Classification: |
G09G 3/32 |
| US Classification: |
345/83 |
| Issue Date: |
01-29-2008 |
| Filing Date: |
07-28-2004 |
| Application : |
10/902409 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
7324076 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7324076 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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