Appeal 2007-3322
Application 09/947,094
D Findings of Fact (FF. ¶ Nos.)
1. The invention is directed to an apparatus which senses light
emitting diode luminance and a method for sensing light emitting diode
luminance. (Specification 3-5).
2. It has been known in the art to use an LED back lighting array
as a source of illumination for liquid crystal displays. (Specification 2:22-
24).
3. There are difficulties with conventional ways of providing an
LED array as the source of illumination for liquid crystal displays, relating
to the sensing of LED illumination to provide a basis for adjustment of the
illumination intensity. (Specification 3:1-7).
4. According to the Applicants, among such difficulties is that a
sensor for sensing LED illumination, if placed in the path of illumination
toward the liquid crystal display, would create a dark spot on the display,
and also that a sensing device mounted on a side panel lateral to the direct
path of illumination would be prone to false readings due to ambient light.
(Specification 3:8-13).
5. The independent claims are claims 1, 11, 14, 18, 26, and 31.
6. Claim 1 reads as follows:
1. A light emitting diode (LED) luminance sensing
system comprising:
a string of LEDs having a sampling LED, said string
configured to receive a current flow and, upon receipt thereof,
to emit light;
a light sensor configured to detect light emitted from said
sampling LED;
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: September 9, 2013