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:
Apr. 11, 2006
Filed:
Nov. 30, 2004
Kenji Oguma, Hitachi, JP;
Atsushi Kawabata, Hitachi, JP;
Korefumi Tashiro, Hitachi, JP;
Michio Fujiwara, Hitachinaka, JP;
Shinya Tanifuji, Hitachi, JP;
Kenji Oguma, Hitachi, JP;
Atsushi Kawabata, Hitachi, JP;
Korefumi Tashiro, Hitachi, JP;
Michio Fujiwara, Hitachinaka, JP;
Shinya Tanifuji, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A transmitter and receiver device used together with a control device provided on ground, which performs detection of a train, performs transmission and reception of a train detecting signal, and collates data added to a received train detection signal with predetermined data. A transmitter, to be connected to a track circuit, transmits a train detecting signal, to the track circuit, and a receiver, to be connected to the track circuit, receives the train detecting signal from the track circuit. The transmitter adds a first unique code to the train detecting signal transmitted from the control device provided on the ground and transmits the same to the track circuit. The receiver adds a second unique code to the train detecting signal which was the first unique code added thereto and received from the track circuit and transmits the same to the control device provided on the ground.