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:
Oct. 28, 2025
Filed:
Jun. 27, 2022
Autonetworks Technologies, Ltd., Yokkaichi, JP;
Sumitomo Wiring Systems, Ltd., Yokkaichi, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Tadashi Matsumoto, Yokkaichi, JP;
Kazuki Kitagawa, Yokkaichi, JP;
Kazuyuki Inoue, Yokkaichi, JP;
Yojiro Suyama, Osaka, JP;
Tatsuya Izumi, Osaka, JP;
Hideyuki Tanaka, Osaka, JP;
AutoNetworks Technologies, Ltd., Yokkaichi, JP;
Sumitomo Wiring Systems, Ltd., Yokkaichi, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A vehicle-mounted device stores delay time information of a first set and a second set. The first set includes a first transmission delay time from an external portion to a measurement reference position at a data reception time, and a second transmission delay time from an external portion to a measurement reference position at a data reception time in another device. The second set includes a third transmission delay time from a measurement reference position to an external portion at a data transmission time, and a fourth transmission delay time from a measurement reference position to an external portion at a data transmission time in the other device. A propagation delay time between the devices is measured by time synchronization information to and from the other device, the measured propagation delay time is corrected based on the stored delay time information, and time synchronization between the devices is performed.