Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1341/CHENP/2012 A
(19) INDIA
(22) Date of filing of Application :13/02/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : SELECTIVE COMPENSATION FOR AGE-RELATED NON UNIFORMITIES IN DISPLAY
(51) International classification :G09G5/00
(31) Priority Document No :09305746.1
(32) Priority Date :11/08/2009
(33) Name of priority country :EPO
(86) International Application No
Filing Date
(87) International Publication No : NA
(61) Patent of Addition to Application
:NA
Number
:NA
Filing Date
(62) Divisional to Application Number
Filing Date
:PCT/IB2010/053547
:05/08/2010
:NA
:NA
(71)Name of Applicant :
1)KONINKLIJKE PHILIPS ELECTRONICS N.V.
Address of Applicant :GROENEWOUDSEWEG 1
EINDHOVEN 5621 BA NETHERLANDS
(72)Name of Inventor :
1)VAN HEESCH Franciscus Hendrikus
2)KLOMPENHOUWER Michiel Adriaanszoon
3)BELIK Oleg
(57) Abstract :
A video signal compensator (10 70 80 290) for selectively compensating for age-related non-uniformities in a display receives
an indication of motion or detects motion in an incoming video signal and receives or determines an indication of amounts of
compensation for the different parts of the display needed to compensate for the non-uniformities. The compensator selectively
applies the needed amount of compensation to the video signal according to the indicated motion to apply less of the needed
compensation where there is less motion over at least some of the range of possible motions. This can reduce the drive levels at
least where the non uniformities are less visible because of the motion in the video. The reduced drive levels can lead to less
ageing and thus prolong display life. The amounts of needed compensation can be predicted or determined from measured outputs
of pixels of the display.
No. of Pages : 26 No. of Claims : 17
The Patent Office Journal 21/06/2013 13878