Signal cascade transmission method and signal cascade device

Abstract

The embodiment of the invention discloses a signal cascade transmission method and a signal cascade device. The method includes the following steps that a high-speed serial signal which is sent by a former-series signal cascade device and has been subject to pre-emphasis processing is received and is subject to equilibrium processing and clock locking through a high-speed serial sending and receiving device; the high-speed serial signal which has been subject to equilibrium processing and clock locking is sent to a next-series signal cascade device after being subject to pre-emphasis processing through the high-speed serial sending and receiving device, and the high-speed serial signal which has been subject to equilibrium processing and clock locking is converted into a digital data signal and a synchronizing signal which are parallel through the high-speed serial sending and receiving device; the digital data signal and the synchronizing signal which are parallel are subject to local processing so as to be locally used. The signal cascade transmission method and the signal cascade device can solve the problem that cascade series are limited during signal cascade in the prior art, and cascade of high-bandwidth data can be achieved.

Description

technical field [0001] Embodiments of the present invention relate to signal processing technologies, and in particular, to a signal cascading transmission method and a signal cascading device. Background technique [0002] In the field of image splicing, it is often necessary to cascade the input image from one display unit to each display unit, so as to realize the display of the entire wall. In the existing digital cascade device, the pixel clock will cause clock jitter due to cables, codec chips, etc. during the cascade transmission process, and this jitter will be accumulated step by step. When the amplitude of the clock jitter is greater than the capacity of the decoding chip Within a limited time, the image will not be able to be decoded and displayed normally, let alone be cascaded to subsequent display units. [0003] The Chinese patent with the publication number 101697276A discloses a method to solve the problem of cascading series limitation caused by the accumu...

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Problems solved by technology

[0005] The embodiment of the present invention provides a signal cascading transmission method and a signal cascading device, which can solve the problem of the limitation of the number of cascading series in the signal cascading in the prior art, and can realize the cascading of high-bandwidth data

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