In-vehicle communication system
US-2018097887-A1 · Apr 5, 2018 · US
In-vehicle communication device and in-vehicle system
US11362859B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11362859-B2 |
| Application number | US-201917268815-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 26, 2019 |
| Priority date | Aug 24, 2018 |
| Publication date | Jun 14, 2022 |
| Grant date | Jun 14, 2022 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention provides an in-vehicle communication device and an in-vehicle system that can establish communication, in a short time, between applications corresponding to the same communication protocol between in-vehicle processing devices connected to communication buses having different communication protocols. In the present invention, when the first communication controller 33 has received a specific message from the first in-vehicle processing device 102 connected to the first communication bus 101 , the in-vehicle communication device 1 transmits a communication protocol switching command from the second communication controller 3 to the second in-vehicle processing device 202 connected to the second communication bus 201 to switch a communication protocol setting of the second communication controller to the same communication protocol setting as that of the first communication bus.
First claim
Opening claim text (preview).
The invention claimed is: 1. An in-vehicle communication device that is connected to a first communication bus and a second communication bus and relays data between the first communication bus and the second communication bus, the in-vehicle communication device comprising: a first communication controller connected to the first communication bus; and a second communication controller connected to the second communication bus, wherein when the first communication controller has received a specific message from a first in-vehicle processing device connected to the first communication bus in a state where a communication protocol of the first communication bus and a communication protocol of the second communication bus are different, the in-vehicle communication device is configured to transmit a communication protocol switching command from the second communication controller to a second in-vehicle processing device connected to the second communication bus to cause a communication protocol switch to switch a communication protocol setting of the second communication controller to a same communication protocol as that of the first communication bus without switching the communication protocol of the first communication controller, wherein the second in-vehicle processing device is configured to reset the communication protocol setting of the second communication controller to an original protocol setting when a predetermined time has elapsed, and wherein a communication protocol of the first communication bus is CAN, and a communication protocol of the second communication bus is CAN-FD. 2. An in-vehicle system comprising: the in-vehicle communication device according to claim 1 ; the first communication bus; the second communication bus; the first in-vehicle processing device; and the second in-vehicle processing device, wherein the second in-vehicle processing device is configured to, after receiving the communication protocol switching command, switch a communication protocol setting of a communication controller of the second in-vehicle processing device to the same communication protocol setting as that of the first communication bus.
Assignees
Inventors
Classifications
Flexible bus arrangements (arrangements for maintenance or administration involving management of faults; events, alarms H04L41/06; automatic restoration of network faults H04L41/0654) · CPC title
for vehicle-to-vehicle communication [V2V] · CPC title
Controller Area Network CAN · CPC title
Multiprotocol handlers, e.g. single devices capable of handling multiple protocols · CPC title
- H04L12/40182Primary
by using a plurality of communication lines · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11362859B2 cover?
- The present invention provides an in-vehicle communication device and an in-vehicle system that can establish communication, in a short time, between applications corresponding to the same communication protocol between in-vehicle processing devices connected to communication buses having different communication protocols. In the present invention, when the first communication controller 33 h…
- Who is the assignee on this patent?
- Hitachi Automotive Systems Ltd, Hitachi Astemo Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04L12/40182. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 14 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).