Method for self-adaptively adjusting overflow of sustaining pulses under programmable array logic (PAL) mode

A sustain pulse, self-adaptive technology, applied in instruments, static indicators, etc., can solve the problems of field synchronization signal overflow, image quality degradation, easy to send overflow, etc., and achieve the effect of preventing sustain pulse overflow

Inactive Publication Date: 2013-03-13
SICHUAN COC DISPLAY DEVICES
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  • Abstract
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Problems solved by technology

[0004] When the frequency of the external input image deviates, causing the period of one frame of data to be lower than 16.67ms, this will cause the frame of data to overflow relative to the field synchronization signal, and flickering will occur, resulting in a decrease in image quality
[0005] The present invention provides a method for adaptively adjusting sustain pulse overflow under the PAL system. In order to better realize the gray scale display effect, the module hopes to make the width of the sustain pulse narrower and wider without consi

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  • Method for self-adaptively adjusting overflow of sustaining pulses under programmable array logic (PAL) mode
  • Method for self-adaptively adjusting overflow of sustaining pulses under programmable array logic (PAL) mode
  • Method for self-adaptively adjusting overflow of sustaining pulses under programmable array logic (PAL) mode

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[0022] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps. Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose.

[0023] The current design of the PAL drive waveform of the plasma module adopts the display method of 100HZ, that is, the original multi-subfield is divided into two subfield groups, one front subfield group and one rear subfield group; the drive designed in this way The waveform is similar to 100HZ, so as to avoid the flickering phenomenon of the module. In order to better avoid flickering, most manufacturers have added a blanking period after the previous subfield. When the width of the output sustain pulse is greater than the set width, or the module performs dynamic su...

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Abstract

The invention discloses a method for self-adaptively adjusting overflow of sustaining pulses under a programmable array logic (PAL) mode, and relates to the technical field of plasma display. The method comprises a step of dynamically adjusting the width of a blanking period. According to the method, by using a module, the narrower the width of the sustaining pulses is, the better the effect is under a condition of not considering the power so that the display effect of a gray scale is well realized, so that the more sustaining pulses can be contained within the time of one field; when an input signal is in a PAL, a technology being 100Hz is used so as to improve the flickering sense of the module; and a technology in which a sub-field is dynamically adjusted is used by a plurality of manufacturers, although the width of the sustaining period is narrow within the range of the time of one field, the overflow phenomenon easily exists. According to the method for self-adaptively adjusting the overflow of the sustaining pulses under the PAL mode, the overflow problem can be solved.

Description

technical field [0001] The invention relates to the field of plasma display technology, in particular to a method for adaptively adjusting sustain pulse overflow under the PAL system. Background technique [0002] When the plasma display panel is discharged by high-frequency voltage, the discharge gas generates vacuum ultraviolet rays, and the phosphor powder formed between the interlayers emits light to display the picture. Plasma display devices are advantageous in that they are thin and lightweight, and can be manufactured with large-sized displays having high resolution. [0003] In order to embody the gray scale of an image, the plasma display device is driven by dividing one frame into several subfields with different light emission quantities. Each subfield is divided into a reset period for uniformly generating discharges, an address period for selecting discharge cells, and a sustain period for expressing gray levels according to the amount of discharge. For examp...

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Application Information

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IPC IPC(8): G09G3/288
Inventor 何斌刘学
Owner SICHUAN COC DISPLAY DEVICES
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