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:
Jul. 22, 1980
Filed:
Sep. 20, 1978
Applicant:
Inventors:
Teruhisa Fujino, Kawasaki, JP;
Fujio Osawa, Tama, JP;
Noriaki Nagao, Toshima, JP;
Shigeo Hanji, Musashino, JP;
Assignee:
Kabushiki Kaisha Koden Seisakusho, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
343103 ;
Abstract
A Loran receiving apparatus is repeatedly switched by the actuation of a display mode changeover means between the state of displaying a plurality of measured time differences on a display in a sequential order and the state of continuously displaying only one of the measured time differences. A Loran signal detector detects a phase code of an incoming Loran signal. The detected phase code is stored in N memory parts, each corresponding to the Loran signal repetition period. Coincidence of the outputs from the memory parts is detected as the presence of a correct Loran signal.