Input-output equipment and method

Abstract

The invention provides input-output equipment comprising a frequency division device, an isolation device and a restoring device. The frequency division device is used for receiving input signals, carrying out frequency division on the input signals to obtain a plurality of paths of first frequency division signals, and outputting the plurality of paths of the first frequency division signals. The isolation device is used for receiving the plurality of paths of the first frequency division signals from the frequency division device, converting the plurality of paths of first frequency division signals into optical signals, and then converting the optical signals into a plurality of paths of second frequency division signals as many as the plurality of paths of the first frequency division signals, and outputting the plurality of paths of the second frequency division signals. The restoring device is used for receiving the plurality of paths of the second frequency division signals from the isolation device and restoring the plurality of paths of the second frequency division signals into output signals, wherein the output signals are same as the input signals. The invention is also provided with an input-output method correspondingly.

Description

technical field [0001] The present invention relates to an input-output (IO) device and an input-output method, more specifically, the present invention relates to a device and a corresponding method for high-speed input-output using a low-speed photocoupler. Background technique [0002] A photocoupler is a conversion device that transmits electrical signals through light as a medium. It is generally composed of two parts: a light source and a light receiver. The light source is used to convert the received electrical signal into a corresponding optical signal, and the light receiver receives the light signal. , and convert the light signal back to an electrical signal, the light source can be a light emitting diode, and the light receiver can be a photodiode, a phototransistor, and the like. Since the optocoupler isolates the input and output electrical signals, it can transmit information in one direction, and the parasitic feedback is small, and it has strong resistance ...

AI Technical Summary

Problems solved by technology

[0004] However, both the high-speed optocoupler and the magnetic coupler will bring about the problem of cost increase. Moreover, the high-speed optocoupler still has an upper frequency limit, and signals with frequencies above the upper limit cannot pass through the optocoupler. Therefore, it is necessary to At the lowest possible cost, such as technically using low-speed (low-frequency) optocouplers, to process as high-speed (high-frequency) signals as possible

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