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:
Mar. 30, 2021
Filed:
Sep. 17, 2019
Denso Corporation, Kariya, JP;
Kenji Inazu, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A network switch provides an in-vehicle network, and includes a switch IC having multiple ports and a microcomputer. The switch IC includes: L2 and L3 receivers; first and second memories for storing MAC address and routing tables, respectively; and L2 and L3 processors. The L2 receiver determines whether a destination MAC address in a frame is a network switch address. The L2 processor determines a port corresponding to the destination MAC address based on the MAC address table when the destination MAC address is not the network switch address. The L3 receiver determines whether a transmission source IP address is registered in the routing table when the destination MAC address is the network switch address. The L3 processor determines an output port and another destination MAC address of a forwarding destination based on the routing table and a destination IP address when the transmission source IP address is registered.