Vehicle communication system and communication method

By connecting multiple vehicle-mounted device groups through optical couplers, optical signal communication between multiple vehicle-mounted devices in a vehicle is realized, which solves the communication difficulties in the existing technology, improves communication accuracy and efficiency, reduces power consumption and increases bandwidth utilization.

CN116076037BActive Publication Date: 2026-07-10SUMITOMO ELECTRIC INDUSTRIES LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUMITOMO ELECTRIC INDUSTRIES LTD
Filing Date
2021-09-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies struggle to enable various communications using optical signals between multiple vehicle-mounted devices, especially as data communication volumes in vehicles increase. A technology is needed that can enable optical signal communication between more vehicle-mounted devices.

Method used

Multiple vehicle-mounted device groups are connected by optical couplers, and communication between the vehicle-mounted devices is realized through a common transmission path. Timing information and time slot information are sent by the main device to achieve time synchronization and dynamic time slot allocation. A clock synchronization circuit is used to achieve stable clock synchronization, reduce power consumption and shorten synchronization time.

Benefits of technology

It enables various communications between multiple vehicle-mounted devices, improves the accuracy and efficiency of communication, reduces power consumption, and increases the utilization of communication bandwidth.

✦ Generated by Eureka AI based on patent content.

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Abstract

The vehicle communication system includes: an optical coupler; a first vehicle device group consisting of a plurality of vehicle devices connected to a first end of the optical coupler; and a second vehicle device group consisting of a plurality of vehicle devices connected to a second end of the optical coupler, wherein each vehicle device in the first vehicle device group is capable of communicating with each vehicle device in the second vehicle device group via a common transmission path in the optical coupler, and each vehicle device in the second vehicle device group is capable of communicating with each vehicle device in the first vehicle device group via a common transmission path in the optical coupler.
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