Method and apparatus for driving plasma display panel
AssigneeLG Electronics Inc.
InventorsSeong Ho Kang, Yong Duek Kim, Ki Sang Hong
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Abstract
A method and apparatus for driving a plasma display panel that is adaptive for improving a capability of gray scale expression as well as a picture quality. In the method and apparatus, an average brightness of an image is detected. A gray level number of the current image is adjusted in accordance with said average brightness of said image using a pre-stored reference gray level number.
Claims41
A method of driving a plasma display panel, comprising the steps of:
- detecting an average brightness of an image;
- and
- adjusting a gray level number of the current image in accordance with said average brightness of said image using a pre-stored reference gray level number.
A method of driving a plasma display panel, comprising the steps of:
- detecting an average brightness of an image;
- adjusting a gray level number of the current image in accordance with said average brightness of said image using a pre-stored reference gray level number;
- calculating a sub-field arrangement having said adjusted gray level number using the sub-field arrangement having said reference gray level number;
- and
- calculating an emitting pattern having said adjusted gray level number using the emitting pattern having said reference gray level number.
A method of driving a plasma display panel, comprising the steps of:
- converting an input image into a pre-determined reference gray level number;
- selecting an emitting pattern having said gray level number in accordance with a gray level value of said input image;
- detecting an average brightness of said input image according to the selected emitting pattern;
- and
- selecting the number of sustain pulses divided in accordance with said gray level number depending upon said average brightness and said emitting pattern.
A method of driving a plasma display panel, comprising the steps of:
- adjusting a gray level number of an input image;
- and
- controlling each gray level value and the number of sustain pulses for causing a discharge, irrespectively of a variation in said gray level number, such that they are same.
A driving apparatus for a plasma display panel, comprising:
- an average level detector for detecting an average brightness of an image;
- and
- gray level number control means for adjusting a gray level number of the current image in accordance with an average brightness of said image using a pre-stored reference gray level number.
A driving apparatus for a plasma display panel, comprising:
- an average level detector for detecting an average brightness of an image;
- gray level number control means for adjusting a gray level number of the current image in accordance with said average brightness of said image using a pre-stored reference gray level number;
- an emitting pattern selector for calculating an emitting pattern having said adjusted gray level number using the emitting pattern having said reference gray level number;
- and
- a controller for storing the number of sustain pulses divided in accordance with said gray level number and for selecting the number of sustain pulses in accordance with said average brightness and said emitting pattern.
A driving apparatus for a plasma display panel, comprising:
- a gray level converter for converting an input image into a pre-determined reference gray level;
- an emitting pattern selector for selecting an emitting pattern having said gray level in accordance with a gray level value of said input image;
- an average level detector for detecting an average brightness of said selected emitting pattern;
- and
- a controller for storing the number of sustain pulses divided in accordance with said gray level number and for selecting the number of sustain pulses in accordance with said average brightness and said emitting pattern.
A driving apparatus for a plasma display panel, comprising:
- gray level number control means for adjusting a gray level number of an input image in accordance with an average brightness;
- and
- a controller for controlling the number of sustain pulses for causing a discharge such that it is equal to each gray level value irrespectively of a variation in the gray level number.
Dependencies are inferred from the claim text.