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:
Sep. 04, 1984
Filed:
Oct. 21, 1982
Mitsuru Yamaura, Tokyo, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
In a protective relay system for an electric power system with relay devices at respective terminals, a synchronous signal is transmitted from each terminal upon occurrence of a fixed time relation with the clock signal subsequent to receipt of a synchronous signal from the opposite terminal. The synchronous signal is associated with time data indicating the relative time of receipt of the synchronous signal with reference to the occurrence of the clock signal. The time deviation of occurrence of the clock signal at each terminal with reference to occurrence of the clock signal at the opposite terminal is detected in accordance with the time data transmitted from the opposite terminal, the time point at which the synchronous signal from the opposite terminal is received, the time point at which the preceding transmission of the synchronous signal toward the opposite terminal took place and the clock signal at each terminal, and is used for phase-adjustment of the clock signal at each terminal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile