Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle communication system

A vehicle-mounted communication system and communication line technology, applied in vehicle-mounted communication, vehicle wireless communication services, transmission systems, etc., can solve problems such as improper transmission and malfunction, and achieve the effect of preventing communication lines from being occupied

Active Publication Date: 2018-05-11
AUTONETWORKS TECH LTD +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An ECU injected with a fraudulent program may send fraudulent messages to the vehicle's network, and as a result, other ECUs connected to the network may malfunction, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle communication system
  • Vehicle communication system
  • Vehicle communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0047] Hereinafter, the present invention will be specifically described based on the drawings showing the embodiments thereof. figure 1 It is a schematic diagram showing the configuration of the in-vehicle communication system according to the first embodiment. The in-vehicle communication system according to Embodiment 1 is configured to connect a plurality of ECUs 30 mounted on a vehicle 1 via a common communication line 2 , and includes a monitoring device 10 that monitors transmission and reception of messages by the ECUs 30 via the communication line 2 .

[0048] The monitoring device 10 is configured to include a processing unit 11 , a communication unit 12 , a storage unit 13 , and the like. Processing section 11 is constituted by computing processing devices such as a CPU (Central Processing Unit, central processing unit) or MPU (Micro-Processing Unit, micro-processing unit), and is configured by executing an unillustrated ROM (Read Only Memory, read-only memory) The...

Deformed example 1

[0074] Figure 5 It is a block diagram showing the configuration of the in-vehicle communication system of Modification 1. The in-vehicle communication system of Modification 1 does not include the monitoring device 10 for monitoring messages transmitted and received on the communication line 2 , and each ECU 130 connected to the communication line 2 monitors the messages. Each ECU 130 implements a determination processing unit 21, a discard processing unit 22, a notification processing unit 23, a clear processing unit 24, and a prohibition processing unit as functional modules in the form of software in the processing unit 131 by executing a predetermined program stored in a ROM or the like. 41 etc. The processing performed by these functional blocks is substantially the same as the processing performed by the monitoring device 10 and the ECU 30 in the first embodiment described above.

[0075] That is, each ECU 130 of Modification 1 judges whether or not the message transm...

Deformed example 2

[0079] Image 6 It is a block diagram showing the configuration of an in-vehicle communication system according to Modification 2. The in-vehicle communication system according to Modification 2 is configured such that the communication line 2 and the communication line 3 to which a plurality of ECUs 30 are connected are respectively connected to a gateway 210 , and the gateway 210 relays messages between the communication lines 2 and 3 . In the case of this configuration, the same monitoring function as that of the monitoring device 10 of the first embodiment described above can be provided to the gateway 210 .

[0080]The gateway 210 of Modification 2 includes a processing unit 211 , communication units 12 a and 12 b , and a storage unit 13 . The two communication units 12 a and 12 b are connected to the communication lines 2 and 3 , respectively, and transmit and receive messages with the ECU 30 via the connected communication lines 2 and 3 . The processing unit 211 trans...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a vehicle communication system which can prevent a communication line from being occupied by a repetitive unauthorized message transmission. This vehicle communication system, in which a plurality of ECUs are connected through a communication line, is provided with a monitoring device having: a determination processing unit which determines whether a message is authorized; a discard processing unit which discards an unauthorized message before the completion of transmission; a storage unit which stores the ID of a discarded message; and a notification processing unit which outputsan ACK signal indicating a reception completion when a message having an ID stored in the storage unit is received. The discard processing unit does not discard any messages with an ID stored in the storage unit. Each ECU stores, in the storage unit, the IDs assigned to messages on which a discard process has been performed by the monitoring device, and prohibits processing on the basis of messages with IDs stored in the storage unit.

Description

technical field [0001] The present invention relates to an in-vehicle communication system in which messages are sent and received by a plurality of communication devices connected to a common communication line. Background technique [0002] Conventionally, a plurality of ECUs (Electronic Control Units, Electronic Control Units) are mounted in a vehicle, and they are connected via a network such as CAN (Controller Area Network, Control Area Network). These plural ECUs exchange information via a network, and perform various processes. In recent years, the scale of the network in the vehicle tends to increase. As an attack on the network of such a vehicle, for example, an unauthorized program may be injected into the ECU. An ECU injected with an unauthorized program may transmit an unauthorized message to the network of the vehicle, and as a result, other ECUs connected to the network may malfunction or the like. [0003] Patent Document 1 proposes a communication system t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L29/08H04L12/40H04L29/14H04L69/40
CPCH04L12/40169H04L63/123H04L67/125H04W4/48H04L69/40H04L63/0227H04L63/00H04L65/40H04L12/40013H04L63/12H04L2012/40215H04L2012/40273
Inventor 井上雅之
Owner AUTONETWORKS TECH LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com