Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-05-17
2005-05-17
Shalwala, Bipin (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S063000, C345S084000, C345S087000, C345S089000, C345S090000, C345S098000, C345S102000, C345S204000, C345S214000
Reexamination Certificate
active
06894666
ABSTRACT:
A contrast correcting circuit for preventing white distortion in a dark screen comprises: an integrator for integrating brightness levels of video signals, and for calculating a sum of the brightness levels; a ROM for storing different types of table data exhibiting contrast conversion characteristics according to the brightness; a selection signal generator for setting as a reference value the sum of the brightness levels of all of the pixels when the brightness levels are at a maximum, for comparing the reference value with an integration output of the integrator, and for instructing the ROM to selectively output table data suitable for the brightness of a screen selected from the different types of table data; and a RAM for storing a conversion table for correcting the contrasts of the video signals by means of the table data.
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“Communication” and “Search Report”issued by European Patent Office dated on Feb. 24, 2003.
Ogawa Hidehito
Okamoto Ryutaro
Otawara Masayuki
Bushnell , Esq. Robert E.
Kovalick Vincent E.
Samsung SDI & Co., Ltd.
Shalwala Bipin
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