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. 26, 2005
Filed:
May. 03, 2001
Scot Stewart, Indialantic, FL (US);
Scot Stewart, Indialantic, FL (US);
GE Transportation Systems Global Signaling LLC, Melbourne, FL (US);
Abstract
An off-board communications system () for railway communications to and from a locomotive () and a central station (). A radio () utilizes multiple antennas () to broadcast a transmission signal () over parallel communications paths so to insure that a data sent from a locomotive () is complete. In one embodiment, the antennas () are selected to broadcast signals as a function of signal magnitude and phase weighting so to optimize transmissions directed at a remotely located receiver (). In another embodiment, antennas () broadcast at different frequencies, and with different modulation and broadcast protocols. A signal divider () such as a multiplexer divides the signal prior to transmission, and a signal recombining unit () recombines transmitted signals () at the receiving site. A performance/availability checker is employed to monitor transmission integrity.