Time schedule controller

A timing controller and display technology, applied in digital video signal modification, electrical components, image communication, etc.

Active Publication Date: 2020-08-07
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, downsampling tends to cause aliasing distortion of the high-frequency components of the signal

Method used

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Embodiment Construction

[0031] figure 1 A block diagram of a display 100 according to an embodiment of the present invention is shown. In this embodiment, a display 100 (such as a liquid crystal display) may include a panel 11 , a scan driver 12 , a data driver 13 and a timing controller (T-con) 14 . Wherein, the panel 11 includes a plurality of pixels (not shown) arranged in a matrix. The scan driver 12 is controlled by the timing controller 14 to sequentially activate the corresponding columns of pixels of the control panel 11 through the plurality of scan lines 121 . The data driver 13 is controlled by the timing controller 14 and receives the image signal, and transmits the image signal to the pixels of the corresponding row (or channel) of the panel 11 through the plurality of data lines 131 . The timing controller 14 includes an encoder 141, which uses a downsampling method for data compression of the video signal.

[0032] figure 2 Shows a simplified example of downsampling, where data 1,...

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PUM

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Abstract

A time schedule controller is suitable for a display. The display comprises a panel; a scanning driver controlled by the time schedule controller and sequentially starting the pixels of the corresponding columns of a control panel through a plurality of scanning lines; and a data driver controlled by the time schedule controller, receiving image signals and transmitting the image signals to the pixels in the corresponding rows of the panel through a plurality of data lines. The time schedule controller includes an encoder that compresses data of an image signal using a reduced sampling method.The reduced sampling method mainly comprises the following steps: determining a dense region of gray scale distribution of an image signal; determining the weighted sum, the maximum value and the minimum value of the two pieces of data to be compressed; determining whether the weighted sum, the maximum value or the minimum value is located in the dense area or not according to a preset priority sequence; and if so, setting the value as a reduced sampling value, otherwise, determining the value closest to the dense area in the weighted sum, the maximum value and the minimum value as the reduced sampling value.

Description

technical field [0001] The present invention relates to image compression, in particular to a histogram-based down-sampling method. Background technique [0002] In the field of signal processing, data compression is a technique to encode information using fewer bits. Image compression is an image processing technology that applies data compression methods to digital images. Downsampling (downsampling) is a common means of image compression, used to reduce the sampling rate (sampling rate) of the signal. However, down-sampling tends to cause aliasing distortion of high-frequency components of the signal. [0003] Therefore, while using down-sampling for image compression, it must also ensure that important data information can be kept without data distortion. Contents of the invention [0004] In view of the above, one of the objectives of the embodiments of the present invention is to provide an image compression system and method, which can effectively ensure that the...

Claims

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Application Information

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IPC IPC(8): H04N19/42H04N19/132
CPCH04N19/42H04N19/132
Inventor 陈秋妤
Owner HIMAX TECH LTD
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