Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-10-17
2006-10-17
Nguyen, Jimmy H. (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S691000
Reexamination Certificate
active
07123222
ABSTRACT:
The present invention relates to a method of improving the luminous efficiency of a sequential-colour matrix display, the display being driven using an addressing method of the pulse width modulation (PWM) type. This method comprises, for each pixel of a subframe, the following steps: comparison of the pixel colour value of the preceding subframe with a reference value so as to provide an overlap value depending on the period of overlap with the current subframe; if the pixel color value of the current subframe less the overlap value gives a positive value, a time offset is added to the pixel color value of the current subframe; if the pixel color value of the current subframe less the overlap value gives negative value, the pixel color value of the current subframe is forced to be zero. The invention applies to LCOS or LCD displays.
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Borel Thierry
Doyen Didier
Fried Harvey D.
Johnson Christine
Laks Joseph J.
Nguyen Jimmy H.
Thomson Licensing
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