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:
Mar. 07, 2000
Filed:
Feb. 07, 1997
Marc Heddebaut, Villeneuve D'Ascq, FR;
Jean Rioult, Villeneuve D'Ascq, FR;
Marion Berbineau, Villeneuve D'Ascq, FR;
Denis Duhot, Paris, FR;
GEC Alsthom Transport SA, Paris, FR;
Abstract
In an information transmission device and method for systems using radiating waveguides along which a mobile travels, an unmodulated carrier wave is injected into the radiating waveguide. Some of the energy of the unmodulated carrier wave is sampled locally along the radiating waveguide. A local modulation signal representing information addressed to the mobile modulates the unmodulated carrier wave. The modulated carrier wave is radiated to the mobile.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile