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AC PDP adaptive brightness logic method of controlling wave form generation

A technology of logic control and generation method, which is applied in the field of logic control, can solve problems that are not conducive to rapid design and adjustment of logic control waveforms, and achieve the effects of flexible control waveform design, reduced development costs, and shortened development cycles

Inactive Publication Date: 2006-03-22
四川世纪双虹显示器件份有限公司
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Problems solved by technology

This is very unfavorable for quick design and adjustment of logic control waveforms

Method used

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  • AC PDP adaptive brightness logic method of controlling wave form generation
  • AC PDP adaptive brightness logic method of controlling wave form generation
  • AC PDP adaptive brightness logic method of controlling wave form generation

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] refer to figure 1 As shown, the relationship between the modules in the present invention is illustrated. Among them, the image brightness statistics module A counts the brightness levels of several frames of images, calculates the brightness level code of the image, and sends it to the logic control waveform address generation module B; the logic control waveform address generation module B according to the brightness level code of the image Determine the number of sub-fields, and read the number of sustain pulses of the current sub-field from the sub-field sustain pulse number memory D according to the number of sub-fields and the current sub-field number; the logic control waveform address generation module B generates waveform state data in a certain logical order The search address of memory E and sub-field waveform state delay memory F; the data...

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Abstract

The present invention discloses adaptive AC PDP brightness logic controlling waveform generating method. The image brightness counting module calculates the image brightness level code fed to the logic control waveform address generating module to determine the sub-field number, and the current sub-field holding pulse number is read out from the sub-field holding pulse number memory. The search addresses for the waveform state data memory and the sub-field waveform state delay memory are generated in certain logic order; data is read out from the sub-field waveform state delay memory and fed to the waveform state delay expansion judging module for subtraction counting; and the logic control waveform address generating module determines the search addresses for the waveform state data memory and the sub-field waveform state delay memory. The present invention may be used as embedded system for AC PDP control system to realize image display control function.

Description

technical field [0001] The invention relates to logic control in gas discharge technology, in particular to an AC PDP self-adaptive brightness logic control waveform generation method generated by counting the average brightness level of an image, looking up a table and controlling time delay. Background technique [0002] The AC plasma display panel (AC Plasma Display Panel) uses gas discharge to realize image display, and has great competitiveness in the field of large-screen flat panel display. At present, AC PDP generally adopts multi-subfield technology to realize multi-gray-scale 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 The brightness weight (corresponding to the number of sustain discharge pulses in the circuit implementation), through the combination of subfields with different weights, the multi-level gray...

Claims

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Application Information

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IPC IPC(8): G09G3/28G09G3/288G09G5/10G09G3/20H01J17/49G09F9/313
Inventor 贾俊明
Owner 四川世纪双虹显示器件份有限公司
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