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Image processing device and method and liquid crystal display

An image processing device and image processing technology, applied in the direction of static indicators, electrical digital data processing, instruments, etc., can solve the problems of TFT-LCD manufacturing cost increase, unfavorable cost control, etc., achieve image data reduction and easy cost control , The effect of SDRAM space reduction

Active Publication Date: 2013-04-24
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

Therefore, if the resolution of the input image increases, the capacity of the required SDRAM will increase, and the number of SDRAMs must be increased accordingly to expand the capacity, which will lead to a significant increase in the manufacturing cost of TFT-LCD, which is not conducive to cost control

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  • Image processing device and method and liquid crystal display
  • Image processing device and method and liquid crystal display
  • Image processing device and method and liquid crystal display

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Embodiment Construction

[0041] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0042] The idea of ​​the embodiment of the present invention is that when the high-resolution image is input, it is not directly stored in SDRAM, but the unprocessed original high-resolution image is sent to a buffer for temporary storage, and at the same time, it is processed by reducing the size. The original high-resolution image data is reduced by the device, and then the reduced image is sent to the overdrive unit for normal OD processing. Finally, a comparator compares whether the current image is the same as the previous image. If both If they are the same, the image is a static image, and the original high-resolution image temporarily stored in the buffer will be output; otherwise, it is a dynamic image, and the image after OD processing will be restored to the original resolution and output. In this way, when it is necessary to use SDRAM for OD ...

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Abstract

The invention provides an image processing device which comprises a cache unit, a reduction processing unit, an SDRAM (synchronous dynamic random access memory), an overdrive processing unit, a comparison unit, a recovery processing unit and an output control unit. The invention also provides an image processing method and a liquid crystal display. The image processing device and method and the liquid crystal display provided by the invention do not directly perform overdrive processing on an input high-definition image but cache the input high-definition image in the cache unit while performing reduction processing on the input high-definition image, so that the image data quantity is reduced when in practical overdrive processing, the consumed SDRAM space is correspondingly reduced, the number of the SDRAM is not necessarily increased for inputting high-definition images, and the cost is easy to control. During output, a static image is directly output; and for a dynamic image, the image subjected to overdrive processing and recovered to the original definition is output so as to maintain the image quality.

Description

technical field [0001] The invention relates to the field of image display, in particular to an image processing device, method and liquid crystal display. Background technique [0002] Thin film transistor liquid crystal display (TFT-LCD) has been widely used in the field of image display due to its advantages of high resolution, light and thin volume, and low power consumption. However, since TFT-LCD adopts a sustaining driving method, the twisting of liquid crystal molecules is used to control the on-off of light, and the twisting of liquid crystal molecules requires a process, which leads to a longer response time of TFT-LCD, especially when displaying some images. There may be edge blurring or smearing when moving images. Therefore, how to improve the response time is the focus of each manufacturer's technical research. [0003] Over Drive (OD) technology is an important technical means to improve the response time of TFT-LCD. It utilizes the relationship between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG06F11/00
Inventor 朱立伟吴智豪何振伟陈宥烨
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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