Half-duplex signal photoelectric conversion transmission system and method

CN121122158APending Publication Date: 2025-12-12JIANGSU XINHEDAO MICROELECTRONICS CO LTD
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Patent Information

Application Number
CN202511263223.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-05
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing technologies cannot effectively solve the problems of signal direction conflict, noise amplification, and switching delay in half-duplex signal photoelectric conversion, especially in the lack of a suitable direction arbitration mechanism in photoelectric cooperative transmission.

Method used

A half-duplex photoelectric conversion transmission system is adopted, including first and second half-duplex photoelectric conversion chips. The signal transmission direction is arbitrated in real time through an arbitration module. Output enable signals in the RX and TX directions are generated by utilizing the states of the optical input signal and electrical input signal to ensure the priority of the optical signal. All output paths are shut down in the dual invalid state.

Benefits of technology

It enables rapid switching of signal transmission direction, reduces signal collisions, improves signal-to-noise ratio, reduces costs, avoids the influence of external electromagnetic interference and ambient light, and meets the requirements of high-speed protocols.

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Abstract

The invention relates to a half-duplex signal photoelectric conversion transmission system and method. The system comprises a first half-duplex photoelectric conversion chip which comprises a first arbitration module; the second half-duplex photoelectric conversion chip comprises a second arbitration module; the first optical fiber is connected with the optical input end of the first half-duplex photoelectric conversion chip and the optical receiving end of the second half-duplex photoelectric conversion chip; the second optical fiber is connected with the optical input end of the second half-duplex photoelectric conversion chip and the optical receiving end of the first half-duplex photoelectric conversion chip; and the first arbitration module and / or the second arbitration module control the signal transmission direction through an arbitration mechanism. According to the half-duplex signal photoelectric conversion transmission system, two optical fibers are used for transmitting high-speed signals and low-speed signals at the same time, a copper wire is completely replaced, and the cost is greatly reduced.
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