US Patent Issued to TOYOTA JIDOSHA on Feb. 3 for "SDN system, SDN sub-controller, and method of controlling SDN system" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,728, issued on Feb. 3, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).

"SDN system, SDN sub-controller, and method of controlling SDN system" was invented by Yasuhiro Yamasaki (Nisshin, Japan), Hideki Goto (Okazaki, Japan) and Ikuyoshi Otake (Toyota, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of controlling an SDN system, an SDN sub-controller, and an SDN system is provided. The SDN controller sends a keepalive notification to the SDN switch and the SDN sub-controller. The SDN switch sends a switching request to the SDN sub-controller on condition that the keepalive notification cannot be received during a predetermined specif...