Correction data output device, frame data correction device, frame data display device, correction data correcting method, frame data correcting method, and frame data displaying method

Abstract

A correction data output device according to the invention includes correction data outputting means for outputting correction data that corrects object frame data included in an inputted image signal on the basis of the mentioned object frame data and previous frame data, which are one frame period previous to the object frame data, and correction data correcting means for correcting correction data that corrects and outputs the correction data outputted from the mentioned correction data outputting means on the basis of the mentioned object frame data and the mentioned previous frame data.

Description

technical field [0001] The present invention relates to a device and a method for improving the change speed of the tone number, in particular to a device and a method suitable for matrix display devices such as liquid crystal display screens. Background technique [0002] The transmittance of the liquid crystal used in the liquid crystal display changes due to the cumulative response effect, so it cannot cope with fast-changing animation. In order to solve this problem, conventionally, the response speed of the liquid crystal is improved by increasing the liquid crystal driving voltage when the color tone is changed (for example, refer to Patent Document 1). [0003] When the liquid crystal drive voltage is increased as described above, if the number of display pixels on the liquid crystal panel increases, the image data for one frame written in the image memory for recording input image data increases. Therefore, the required storage capacity increases. Therefore, conven...

AI Technical Summary

Problems solved by technology

However, in the case of the above-mentioned prior art, the liquid crystal driving voltage to be increased or decreased is determined only based on the number of tones of the display frame and the number of tones of the previous frame of the display frame, so the above-mentioned liquid crystal driving voltage includes and noise In the case of the liquid crystal driving voltage corresponding to the noise component, the liquid crystal driving voltage corresponding to the noise component also increases and decreases, and the image quality of the display frame deteriorates.

In particular, in the liquid crystal drive voltage when the color tone change between the display frame and the previous frame of the display frame is small, the influence of the liquid crystal drive voltage corresponding to the noise component is greater than in the case where the color tone change is large. The image quality of the display frame is prone to deterioration

[0009] In addition, when the capacity of the memory is reduced by extracting the image data stored in the image memory, the correct voltage control cannot be performed at the portion where the image data is extracted.

Therefore, there is a problem that the image quality is deteriorated by applying unnecessary voltage because the data of the outline part of the image or the thin line part such as characters is extracted, or the color tone on the liquid crystal screen is deteriorated by not applying the necessary voltage. Change speed improvement reduced

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