Transmission method, receiving terminal and transmission method for image signal

Abstract

The invention discloses a transmission method, a receiving terminal and a transmission system for an image signal. The receiving terminal comprises a physical layer driving chip, a programmable logic device, a synchronization processing module, an encoder and display equipment, wherein the physical layer driving chip is used for receiving image data according to a first clock frequency; the programmable logic device is used for storing the received image data to an inner storage unit; the encoder is used for reading the stored image data according to a second clock frequency, encoding the image data and displaying the encoded image data on the display equipment; the synchronization processing module is used for adjusting the second clock frequency according to the number of the stored image data, so that a mean value of the second clock frequency is equal to the first clock frequency; and the first clock frequency is a clock frequency of a source end for sending the image data. According to the invention, a relatively small storage space is used, so that a phenomenon of overflowing or empty reading can be avoided.

Description

technical field [0001] The invention relates to the field of image transmission, in particular to an image signal transmission method, a receiving terminal and a transmission system. Background technique [0002] In the process of long-distance transmission of image signals, usually the reference clock at the source end, which is used to generate the original image signal, cannot be compared with the reference clock at the terminal, which is used to generate the image signal provided to the display. The two clocks produce and consume data at different rates. This deviation will cause the image data received by the terminal to either overflow or be read empty as the system running time accumulates. [0003] The existing technical solutions are as figure 1 shown. At the source end, the input image data is first written into the local frame buffer frame by frame, and then read from the frame buffer frame by frame, and passed through a pair of high-speed differential pairs, u...

AI Technical Summary

Problems solved by technology

If the distance is long, because the transmission medium uses four, it will lead to serious consumption of resources

Moreover, in many cases, the wiring has been completed, and the optical fiber resources or cable resources have been strictly limited, so this technical solution cannot be realized

In long-distance transmission, this technical solution will also lead to expensive system projects and complicated construction

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