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. 16, 2004
Filed:
Dec. 19, 2001
Brian J. Tillotson, Kent, WA (US);
Phillip R. Rotta, Kirkland, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A timing reference system is provided for correcting inaccuracies in an output of a crystal oscillator experienced by the crystal oscillator during use in a mobile platform. The system utilizes a three-axis accelerometer mounted adjacent to the crystal oscillator on a substrate for sensing the acceleration experienced by the crystal oscillator. An offset generator converts the acceleration measurements generated by the accelerometer to error correction signals. These error correction signals represent the offset values needed to compensate for crystal timing drift due to the acceleration acting on the crystal oscillator thereby allowing the system to produce a corrected timing reference signal.