Device compatible with multiple transmission rates of active cables and method thereof

Abstract

The present disclosure relates to a device compatible with multiple transmission rates of an active cable and a method thereof. The active cable includes a front-end circuit and an output circuit, and the device includes: a rate detection unit connected to the output end of the front-end circuit and used for: detecting the current rate of the output signal of the front-end circuit; The current rate is compared with a rate threshold value to obtain a comparison result; a signal configuration unit is connected to the rate detection unit and the output circuit respectively and is used for: receiving the rate from the rate detection unit. a comparison result; and determining to configure the output circuit with one of multiple parameter configurations according to the comparison result, so as to enable the output circuit to perform data transmission in a working state adapted to the current rate. With the solutions of the present disclosure, the compatibility of active cables can be improved.

Description

technical field [0001] The present disclosure generally relates to the field of active cable technology. More specifically, the present disclosure relates to an apparatus and method for compatibility with multiple transmission rates of an active cable, an active cable apparatus, and a computer-readable storage medium. Background technique [0002] An active cable usually includes connectors at both ends and a copper wire or an optical cable connecting the two connectors to realize the transmission of data signals (such as video data and audio data) for displaying the data signals. At present, in order to support 4K or even 8K high-resolution display, the current audio-visual transmission protocols have increased the communication bandwidth. For example, the DisplayPort ("DP") 1.4 protocol stipulates that a single channel can support a maximum bandwidth of 8.1Gbps. In the latest High Definition Multimedia Interface ("HDMI") 2.1 protocol, a fixed rate link (Fixed RateLink, "...

AI Technical Summary

Problems solved by technology

However, adding special hardware or software to the active cable to monitor and analyze low-speed sideband signals not only increases the area and power consumption of the active cable signal processing circuit, but may even increase the cost of product design and manufacturing process. Difficulty and production costs

Mistakes in this process, low-speed sideband signals will also cause changes in the original electrical characteristics of the system, thereby affecting signal transmission and system compatibility

[0004] In addition, because the high-speed signal processing chip itself has a bandwidth limitation, it is necessary to design a more complex circuit on the chip if it wants to be compatible with high bandwidth (12Gbps) and low bandwidth (below 100MHz) in the case of limited power consumption and area. , and even if the chip bandwidth is designed to be compatible with high bandwidth and low bandwidth, it is necessary to make specific settings for the chip according to different application scenarios

That is to say, it is necessary to know whether the current application is low resolution or high resolution, and then modify the software or hardware of the active cable, making the program more complicated

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