Title:
プラズマディスプレイパネルの駆動装置及びその階調表現方法
Document Type and Number:
Japanese Patent JP4177315
Kind Code:
B2
Abstract:
A PDP driving apparatus and a gray level expressing method thereof that improves the expression of the gray level and reduces pseudo-contour. The average signal level of one frame data of an input image signal is calculated to determine a sustain pulse number, and an inverse gamma correction gray level corresponding to the sustain pulse numbers is expressed with reference to inverse gamma correction tables selected according thereto. The sustain pulse numbers determined according to the signal level are divided into a plurality of groups, and then are converted to the subfields depending on the sustain pulse numbers corresponding to the respective groups. In that situation, the sustain pulse numbers at the subfields corresponding to the respective groups are different from each other.
Inventors:
Park Katsutora
Application Number:
JP2004302191A
Publication Date:
November 05, 2008
Filing Date:
October 15, 2004
Export Citation:
Assignee:
SAMSUNG SDI Co., LTD.
International Classes:
H04N5/66; G09F9/313; G09G3/10; G09G3/20; G09G3/28; G09G3/288; G09G3/291; G09G3/294; G09G3/298; H01J17/49; H05B39/04
Domestic Patent References:
| JP9034403A | ||||
| JP6259034A | ||||
| JP2002006794A | ||||
| JP2003216094A | ||||
| JP2003229064A | ||||
| JP8251515A | ||||
| JP9185343A | ||||
| JP11205633A | ||||
| JP2001075530A | ||||
| JP2002108280A | ||||
| JP2002354378A | ||||
| JP2003015590A | ||||
| JP2000305514A |
Attorney, Agent or Firm:
Takashi Watanabe
Masatake Shiga
Yasuhiko Murayama
Shinya Mitsuhiro
Masatake Shiga
Yasuhiko Murayama
Shinya Mitsuhiro