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:
Oct. 28, 1997
Filed:
Jan. 16, 1996
John J James, Los Gatos, CA (US);
Precision Navigation, Inc., Mountain View, CA (US);
Abstract
A new tilt sensor system is disclosed which provides substantial temperature independence and is very inexpensive to build and to operate. The apparatus is made up of a first source of a first alternating signal having an output impedance Rs1 and a second source of a second alternating signal which is equal in magnitude and 180 degrees out of phase with the first alternating signal, with the source of the second alternating signal having an output impedance Rs2. Also included is a tilt sensor having a first input terminal coupled to receive the first alternating signal, a second input terminal coupled to receive the second alternating signal, and an output terminal which provides an output signal in response to the first alternating signal and the second alternating signal. In the preferred mode, the tilt sensor has an impedance G1 between the first terminal and the output terminal and an impedance G2 between the second terminal and the output terminal. In addition, Rs1=Rs2 and Rs1 is substantially smaller in magnitude than �G1+G2!.