Low-voltage differential signaling (LVDS) receiver, transmitter and method for receiving and transmitting LVDS

Abstract

The invention discloses a low-voltage differential signaling (LVDS) receiver, a transmitter and a method for receiving and transmitting LVDS. The LVDS receiver comprises a data shift register, a synchronous detecting and synchronous processing device, a data length decoder and a data transmission counter, wherein the data shift register is used for receiving and shifting image data transmitted by an LVDS bus; the synchronous detecting and synchronous processing device is used for synchronously detecting the received data of each frame, and performing synchronous processing after detecting image data start synchronous codes or image data end synchronous codes; synchronous detection is not performed during the decoding of data length information; the data length decoder is used for decoding the data length information after finishing the transmission of the image data start synchronous codes to acquire the length of the image data in corresponding frames, and outputting corresponding data length count values; the data transmission counter is used for receiving the data length count values, enabling counting, and outputting indication signals during counting to indicate the synchronous detecting and synchronous processing device not to perform synchronous detection, and stops outputting the indication signals after the counting is finished. By adopting the LVDS receiver, the transmitter and the method for receiving and transmitting the LVDS, the lossless transmission of the data image through the LVDS bus can be realized.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to an LVDS receiver, a transmitter and a method for processing LVDS reception and transmission. Background technique [0002] figure 1 It is a schematic diagram of a system structure for image data transmission through an LVDS (Low-Voltage Differential Signaling, low-voltage differential signaling) bus. like figure 1 As shown, the LVDS transmitter receives the image data transmitted by the image acquisition device, converts the received image data into data in the LVDS bus format and sends it to the LVDS bus for transmission, and the LVDS receiver receives the image data transmitted by the LVDS bus and converts it into original image data , which is sent to the application processor for image processing. [0003] Among them, the image data format transmitted through the LVDS bus is such as figure 2 shown. The synchronization code in the image data format ...

AI Technical Summary

Problems solved by technology

[0005] However, although the above-mentioned prior art avoids that the image data on the LVDS bus is the same as the synchronous data, thereby avoiding wrong synchronization, the original value of the image data is changed, so that the received image is different from the original image

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