Device for reducing the risk of transmission errors in an...

Details Device for reducing the risk of transmission errors in an... Device for reducing the risk of transmission errors in an...

G - Physics

01

S

343/17

G01S 13/74 (2006.01) B61L 25/04 (2006.01) G01S 13/75 (2006.01)

Patent

CA 1080331

Abstract of the Disclosure The invention relates to a device for reducing the risk of transmis- sion errors in an information-transmitting system, in which an interrogating unit emits an interrogating signal and a passive answering unit reflects the interrogating signal in a frequency-selective manner, in accordance with the information to be transmitted. The said invention is characterized by the following essential characteristics, Detecting devices determine the level of reception of the low-frequency portions of the reflected interrogating signal. A switching device switches through any information received at a higher level. The invention is mainly for use on railroads.

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