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Image display apparatus and method which switch drive sequences

An image display device and image technology, applied in image communication, static indicators, components of color TVs, etc., can solve the problems of inability to display brightness, large color shift, etc., to reduce visual performance and reduce display colors. The effect of changing, avoiding ratio changes

Inactive Publication Date: 2007-08-22
HITACHI CONSUMER ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the correct brightness is not represented and a large color shift is observed

Method used

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  • Image display apparatus and method which switch drive sequences
  • Image display apparatus and method which switch drive sequences
  • Image display apparatus and method which switch drive sequences

Examples

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Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0039] FIG. 1 is a block diagram showing a first embodiment of an image display device according to the present invention. 1 shows a digital video signal input terminal 1, a synchronization signal input terminal 2 for receiving a horizontal synchronization signal, a vertical synchronization signal, a display period signal indicating a display period, a clock signal, etc., a multistage processing circuit 3, and an area memory 4 , drive control circuit 5 , SF utilization rate detection circuit 6 , display SF selection circuit 7 , timing generation circuit 8 , display panel 9 , and gain characteristic generation circuit 10 .

[0040]Multistage processing circuit 3 performs signal processing required for PDP display of a video signal input into digital video signal input terminal 1 and supplies the processed signal to area memory 4 and SF utilization rate detec...

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Abstract

An image display apparatus includes a displayed-subfield selecting circuit configured to select a lit-up pattern table from a plurality of lit-up pattern tables in response to an input image signal, a gain-characteristic generating circuit configured to select, from a plurality of gain characteristics, a gain characteristic corresponding to the selected lit-up pattern table, and a gain control circuit configured to produce a gain-limited image signal made by limiting a maximum level of the input image signal in response to the selected gain characteristic, wherein the on / off state of subfields is controlled in response to a level of the gain-limited image signal in accordance with the selected lit-up pattern table, thereby displaying a multi-level image on a display panel.

Description

technical field [0001] The present invention relates generally to an image display device and a method for driving such a device, and more particularly, to an image display device and a method for driving such a device suitable for driving a plasma display panel (PDP). Background technique [0002] In recent years, as the size of display devices has increased, there has been a demand for flat screen display devices. In response to this demand, various types of flat screen display devices have been provided. Various examples include matrix panels that display digital signals as they are, for example, gas discharge panels such as PDPs, DMDs (Digital Micromirror Devices), EL display devices, fluorescent display tubes, liquid crystal display devices, and the like. Among these flat screen display devices, gas discharge panels have advantages such as being suitable for large-sized screens, providing self-luminous screens with high display quality, and providing high-speed respons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/20H01J17/49G09F9/313H04N5/66G09G3/282G09G3/288G09G3/291G09G3/292G09G3/293G09G3/294G09G3/296
CPCG09G2320/0247G09G3/2059G09G3/2037G09G3/2803G09G3/296
Inventor 高田佳明千秋丰
Owner HITACHI CONSUMER ELECTRONICS CORP
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