Appeal No. 1998-0750
Application 08/232,135
current dissipation in a first pixel is measured and then that
current dissipation in a second pixel is compensated for as a
function of the measured current dissipation are not met by the
reference. It is urged that, in contrast, Kanayama teaches that
light emitted from a second pixel is compensated for as a result
of a disparity in illumination between first and second pixels.
The examiner states to the effect that Kanayama teaches measuring
the amount of light emitted by first and second pixels and
controlling the intensity of light emitted from a weak pixel
(i.e., the second pixel) by controlling the length of time that
current is applied to the second pixel until the intensity of
light from the second pixel equals the intensity of light from the
first pixel. The examiner’s position is
to the effect that it would have been obvious to measure the
intensity of emitted light in the first and second pixels of
Kanayama by measuring energy or current dissipation in the pixels,
rather than measure the intensity of emitted light directly.
We find appellants’ argument unpersuasive. As for diodes
that produce weak light, Kanayama compensates current dissipation
in the diodes by increasing the length of time that current is
applied to the diodes so that the pixels of a display panel formed
6
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007