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:
Jan. 03, 2012
Filed:
Jan. 20, 2009
Gerhard F. Meyer, Oceanside, NY (US);
Richard A. Allshouse, Manassas, VA (US);
Robert B. Groves, Jr., Manassas, VA (US);
Gerhard F. Meyer, Oceanside, NY (US);
Richard A. Allshouse, Manassas, VA (US);
Robert B. Groves, Jr., Manassas, VA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A method for delivering and maintaining mandatory directives data from a central office server to an on-board system. Mandatory directives include the enforceable train control data required for a train operating on controlled track. The method enables the on-board system and the central server to exchange data in a vital manner, in part by checking for any inconsistency between i) the on-board system's data as previously transmitted and ii) the required data as represented by both a transmitted set of data identifiers and an associated error correction code.