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Method for displaying gray scales on plasma display panel and plasma display panel driver using the method

A plasma display panel and driver technology, which is applied to improve the representation of low gray levels on PDPs, and in the field of PDP drivers, can solve problems such as the inability to smoothly represent low gray levels.

Inactive Publication Date: 2005-03-23
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for low APC level images, low gray levels cannot be represented smoothly

Method used

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  • Method for displaying gray scales on plasma display panel and plasma display panel driver using the method
  • Method for displaying gray scales on plasma display panel and plasma display panel driver using the method
  • Method for displaying gray scales on plasma display panel and plasma display panel driver using the method

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Embodiment Construction

[0035] Reference will now be made in detail to an embodiment of the invention, an example of which is illustrated in the accompanying drawings.

[0036] A gray scale representation method for a PDP according to an exemplary embodiment of the present invention will now be described.

[0037] Figure 7 A configuration diagram showing an image having a low APC level configured according to a grayscale representation method in a PDP according to an exemplary embodiment of the present invention.

[0038] As shown, in order to obtain approximately 1000cd / m of PDP 2 The peak luminance of , using twelve sub-fields SF1 to SF12 of the picture with low APC level. In the PDP according to an exemplary embodiment of the present invention, the subfields are configured according to a grayscale representation, and there are about 1600 sustain pulses in total (the sum of the X electrodes and the Y electrodes).

[0039] Since the LSB subfield SF1 has two designated sustain pulses, the brightn...

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PUM

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Abstract

In a method for representing gray scales on a plasma display panel (PDP), and a PDP driver using the method, a load ratio of input video signals is generated. When the load ratio is low, a plurality of subfields is generated where the weight of the least significant bit (LSB) subfield from among the subfields may be minimized, (wherein the LSB subfield is a subfield with the minimum weight from among the subfields), and the minimum number of sustain pulses may be allocated to the LSB subfield.

Description

technical field [0001] The present invention relates to a method for displaying gray scales on a plasma display panel (PDP). More particularly, the present invention relates to a method for improving low gray scale representation on a PDP, and a PDP driver applying the method. Background technique [0002] The PDP displays images obtained from electrical signals through a plurality of discharge cells in a matrix format and selectively causes the discharge cells to emit light. [0003] In order to operate as a color display, the PDP must maintain grayscale display capabilities. Gray scale display is realized by dividing a single field (single field) into a plurality of subfields (subfield), and performing time division control on these subfields. [0004] Since the driving characteristics of the PDP require high power consumption, an automatic power control (APC) method of controlling power consumption according to an average signal level or according to a load ratio of a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/313G09G3/20G09G3/28G09G3/288H01J17/49
CPCG09G3/2037G09G3/2946G09G2360/16G09G3/291G09G3/296
Inventor 郑蹄石
Owner SAMSUNG SDI CO LTD