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Low voltage differential signaling (LVDS) interface integrated circuit realizing method based on error diffusion algorithm

An error diffusion, integrated circuit technology, applied in TV, electrical components, color TV, etc., can solve problems such as image quality impact, and achieve the effect of reducing the number of input ports and circuit complexity

Inactive Publication Date: 2013-07-10
西安创芯科技有限责任公司
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Problems solved by technology

If the image data on the upper screen is 10 bits wide, in the prior art, the method of directly intercepting the low bits of the RGB pixel data is used to process the image on the upper screen to meet the needs of different interfaces, reducing the bit width of the data will have a great impact on the image quality

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  • Low voltage differential signaling (LVDS) interface integrated circuit realizing method based on error diffusion algorithm
  • Low voltage differential signaling (LVDS) interface integrated circuit realizing method based on error diffusion algorithm
  • Low voltage differential signaling (LVDS) interface integrated circuit realizing method based on error diffusion algorithm

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Embodiment Construction

[0025] see figure 1 , the present invention is based on the lvds interface integrated circuit implementation method of error diffusion algorithm, specifically comprises the following steps:

[0026] 1) Before lvds encoding, error diffusion processing is performed on the R, G, and B channels respectively, and the diffusion ratio is all set to 1 / 4, which is equivalent to shifting to the right by two bits on the circuit. First, the input 10-bit wide signal is processed by removing the low bits, and is divided into two parts of high 8 bits and low 2 bits or two parts of high 6 bits and low 4 bits; according to the characteristics of image pixel processing sequence, the controller performs image edge processing Judgment, the pixels in the first row, first column, and last column adopt through processing.

[0027] The lvds encoding of the present invention is based on the characteristics of the screen, in order to meet different refresh rates and resolutions, the image point clock ...

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Abstract

The invention provides a low voltage differential signaling (LVDS) interface integrated circuit realizing method based on the error diffusion algorithm. The method comprises the steps of educing the error diffusion algorithm to each path of RGB (red, green and blue) image data before input of LVDS, and reducing image quality reduction due to direct elimination of low-position signals. Line storage used at time of the error diffusion algorithm is designed by utilization of first in first out (FIFO), and a one-in four-out random-access memory (RAM) is set up at time of coding the LVDS interface, and therefore the condition that four RAMs (one in one out) are needed in the prior art is avoided. The LVDS interface integrated circuit realizing method finishes the very large scale integrated circuit (VLSI) design for a raised method, and conducts deep research on key points of the VLSI, and finishes code writing of Verilog-hardware description language (HDL) and function achievement.

Description

technical field [0001] The invention belongs to the technical field of digital television, digital video image processing and display, and specifically relates to an error diffusion algorithm and LVDS interface coding, which realizes the effect of reducing errors while satisfying the requirement of supplying data to different digits of LVDS interfaces, and improves video image quality. displayed effect. Background technique [0002] The core of LVDS technology is the use of extremely low voltage swing high-speed differential data transmission, which can realize point-to-point or point-to-multipoint links. It has the characteristics of small electromagnetic interference, small swing, low power consumption, and good immunity to noise. . [0003] Due to the above advantages, the LVDS interface has become a mainstream interface for flat-panel TVs that can provide high-speed data transmission. There are different LVDS interfaces for screens with different bit widths. For exampl...

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Application Information

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IPC IPC(8): H04N5/765G09G5/00
Inventor 何凯沈源
Owner 西安创芯科技有限责任公司
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