Patent ID: 7027901
Filing Date: 2006-04-11
Classification: B61L

Abstract:
1. A transmitter and receiver device which is 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, comprising: a transmitter, to be connected to a track circuit, which transmits a train detecting signal to the track circuit; and a receiver, to be connected to the track circuit, which receives the train detecting signal from the track circuit; wherein the transmitter adds a first unique code to the train detecting signal transmitted from said control device provided on the ground and transmits the same to the track circuit; and wherein the receiver adds a second unique code to the train detecting signal being added of the first unique code received from the track circuit and transmits the same to said control device provided on the ground.