In-vehicle communication system

The in-vehicle communication system with multiple antennas maintains connectivity by detecting front window glass damage and initiating emergency notifications, addressing the challenge of communication disruption during vehicle accidents.

JP7875760B2Active Publication Date: 2026-06-18CENTRAL GLASS PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
CENTRAL GLASS PRODUCTS CO LTD
Filing Date
2022-08-26
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing in-vehicle communication systems face challenges in maintaining communication functionality during emergency situations, particularly when airbags deploy and the vehicle's front window glass is damaged, as conventional antenna configurations are inadequate for ensuring continuous connectivity.

⚗Method used

An in-vehicle communication system with multiple antennas, including a first antenna on the instrument panel and a second antenna on the front windshield, configured for MIMO, with a correlation coefficient of 0.3 or less, to enable communication even if the front window glass is damaged, using confirmation signals to detect glass damage and trigger emergency notifications.

🎯Benefits of technology

Ensures continuous communication by detecting front window glass damage and initiating emergency notifications, thereby maintaining connectivity during vehicle accidents.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an in-vehicle communication system capable of communication even in emergency situations.SOLUTION: An in-vehicle communication system installed in a vehicle includes an in-vehicle communication device and a plurality of antennas including a first antenna and a second antenna connected to the in-vehicle communication device. The first antenna is provided inside or on top of an instrument panel of the vehicle, and the second antenna is provided on a front window glass of the vehicle. The first and second antennas constitute MIMO in which a plurality of antennas transmit and receive radio waves and at frequencies between 410 MHz and 7 GHz, the correlation coefficient between the first and second antennas is equal to or less than 0.3.SELECTED DRAWING: Figure 1
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