Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2005-12-28
2009-11-24
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
C345S089000, C345S098000, C345S100000, C345S205000, C345S206000, C345S211000, C345S212000
Reexamination Certificate
active
07623123
ABSTRACT:
The present invention relates to an organic electroluminescent device that can reduce power consumption and is appropriate for low gray scale images. The organic electroluminescent device includes a controller and a data driver. The controller compares first digital video data inputted from the outside with a reference value, and adds first dummy bit data or second dummy bit data to the first digital video data in accordance with result of the comparison, thereby generating second digital video data. The data driver generates current corresponding to the first digital video data by using a method corresponding to the dummy bit data included in the generated second digital video data. The organic electroluminescent device uses a PAM method or a PWM method to drive the display based on the gray scale level of the digital video data. For low level gray scale images, the PWM method is used, which ensures a good quality image. For higher level gray scale images, the PAM method is used, which reduces power consumption.
REFERENCES:
patent: 5020124 (1991-05-01), D'Aoust et al.
patent: 6100879 (2000-08-01), Da Costa
patent: 6580653 (2003-06-01), Yamanaka
patent: 6909472 (2005-06-01), Gadeyne et al.
patent: 2002/0105508 (2002-08-01), Inada
patent: 2003/0142046 (2003-07-01), Kasai et al.
patent: 2003/0209721 (2003-11-01), Inoue
patent: 2004/0161069 (2004-08-01), Eom
patent: 2004/0242117 (2004-12-01), Park et al.
patent: 2005/0099367 (2005-05-01), Kang et al.
patent: 2005/0100101 (2005-05-01), Tsuzuki et al.
IjnventorP Mun S H; Title: Flat panel display and driving method thereof: Jul. 13, 2002; Pub No. KR2002059490A Application Date: Jan. 6, 2001: Appl. No. 2001KR-000872.
KED & Associates LLP
Kovalick Vince E
LG Electronics Inc.
Shalwala Bipin
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