The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2011
Filed:
Aug. 27, 2007
Yoshikazu Isoyama, Yokkaichi, JP;
Yoshikazu Isoyama, Yokkaichi, JP;
Autonetworks Technologies, Ltd., Mie, JP;
Sumitomo Wiring Systems, Ltd., Mie, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A vehicle-mounted Local Area Network (LAN) system includes vehicle-mounted LANs in each of which an electronic control unit is connected to a communication line to send and receive messages. The LAN system also includes a relay connection unit that relays the messages between the vehicle-mounted LANs. Each electronic control unit has a reception port for transmitting a reception confirmation signal to the relay connection unit in response to a received message. The relay connection unit has a relay management device that determines, based on the presence or absence of the reception confirmation signal responsive to the message relayed to each of the vehicle-mounted LANs, whether or not a relay is required, and that then updates relay processing information stored in a storage device.