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Adaptive high contrast drive control device and method for plasma display panel

A plasma display, high-contrast technology, applied in identification devices, static indicators, instruments, etc., can solve the problems of ramp wave erasing pulse quantity and distribution control, and can not further improve the contrast, so as to achieve flexible control waveform design and shorten development cycle time and the effect of reducing development costs

Inactive Publication Date: 2006-07-12
四川世纪双虹显示器件份有限公司
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Problems solved by technology

The traditional adaptive brightness control method improves the brightness of the lighted area in the display image by controlling the number of subfields and the number of sustain pulses, but it does not control the number and distribution of ramp erase pulses, so the contrast cannot be further improved

Method used

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  • Adaptive high contrast drive control device and method for plasma display panel
  • Adaptive high contrast drive control device and method for plasma display panel
  • Adaptive high contrast drive control device and method for plasma display panel

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Embodiment Construction

[0027] A plasma display adaptive high-contrast drive control device of the present invention such as figure 1 As shown, the device includes:

[0028] An image brightness statistics module A, its internal structure is as follows figure 2 shown. It includes a counting module Counter, four 8-bit shift registers Dff, and an adder. The counting module Counter counts the upper two bits of all sub-pixels in each frame of image signal, and performs a weighted summation operation, and outputs an 8-bit counting structure; four shift registers Dff are cascaded, and at the falling edge of the field synchronization signal Carry out shifting; the adder ADDer performs an arithmetic average operation on the outputs of the four Dffs to obtain the statistical result of the image brightness statistics module A, that is, the image brightness level coding.

[0029] Among them, the internal structure of the counting module Counter is as follows image 3shown. Assuming that the resolution of t...

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Abstract

The invention discloses a control device and method for driving self-adapting high contrast of plasma display screen. The method comprises: according to the brightness of several inputted frame images to dynamically adjust subfield display mode of next frame image which includes subfields amount, maintaining pulse amount and oblique wave pulse distribution density; and generating logic control wave shape by looking up table and controlling delay for suppressing dynamic false configuration and enhancing image contrast.

Description

technical field [0001] The invention relates to an AC PDP control method and device with self-adaptive high-contrast driving function, which belongs to the field of logic control in gas discharge technology, and in particular to a method of generating corresponding high-contrast driving waveforms by counting the average brightness level of images Devices and methods. Background technique [0002] An AC plasma display (AC Plasma Display Panel, hereinafter referred to as AC PDP) utilizes gas discharge to display images, and has great competitiveness in the field of large-screen flat panel displays. At present, ACPDP generally adopts multi-subfield technology to realize multi-grayscale display of images, that is, one frame of image is divided into multiple subfields for display, and different subfields have different weights, and subfields with different weights correspond to different brightness. The weight (corresponding to the number of sustain d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/288G09G3/28G09G3/20H01J17/49G09F9/313G09G3/296
Inventor 贾俊明
Owner 四川世纪双虹显示器件份有限公司
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