Method and device for converting LVDS (Low Voltage Differential Signal) into DP (Display Port) signal based on DDR (Double Data Rate)

Abstract

The invention discloses a method and a device for realizing conversion of an LVDS (Low Voltage Differential Signal) into a DP (Display Port) signal based on DDR (Double Data Rate) frequency doubling. The method comprises the following steps: extracting image data information from the LVDS; receiving the image data information, and writing the image data information into a DDR; storing the image data information to obtain stored image data; sending a read request to request transmission of the stored image data; reading the stored image data from the DDR according to the read request; and converting the stored image data into parallel coded data, converting the coded data into a serial DP signal, and outputting the DP signal to a DP module. Compared with the prior art, the method and the device have the advantages that a signal conversion way, a time sequence control process and the like are improved, so that the problem of high bit error rate during high-frequency LVDS demodulation can be effectively solved, and a frequency of the DP signal obtained by conversion can be adjusted flexibly as required. The method and the device can be applied in conjunction with a plurality of actual conditions.

Description

technical field [0001] The invention belongs to the field of display and testing of eDP liquid crystal modules, and more specifically relates to a method for converting LVDS signals to DP signals based on DDR frequency doubling. Background technique [0002] At present, most eDP signal conversion devices support the demodulation of LVDS signals, and output eDP signals to LCD modules after data reorganization; however, the resolution of LCD modules supported by eDP is getting higher and higher, and LVDS signals are The signal amplitude and the reliability of the demodulation device are not suitable for directly converting high-frequency LVDS signals into eDP signals of the same frequency. A bit error occurred. Contents of the invention [0003] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a method and device for converting LVDS signals to DP signals based on DDR, wherein by improving the signal conver...

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Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a method and device for converting LVDS signals to DP signals based on DDR, wherein by improving the signal conversion mode, timing control process, etc., it is different from the prior art Compared with it, it can effectively solve the problem of high bit error rate when demodulating high-frequency LVDS signals, and the frequency of the converted DP signal can be flexibly adjusted according to needs, and can be applied in combination with various actual conditions

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