SYNCHRO-TO-DIGITAL CONVERSION WITH WINDOWED PEAK DETECTION

Title:

SYNCHRO-TO-DIGITAL CONVERSION WITH WINDOWED PEAK DETECTION

Document Type and Number:

WIPO Patent Application WO1999035604

Kind Code:

A3

Abstract:

The present invention is directed to a method and apparatus which utilizes a software-based digital signal processing circuit to generate a signal which is representative of the status of a movable component. A preferred embodiment of the apparatus of the present invention includes a synchro which is connected to a movable component. An analog reference excitation may be applied to the synchro, and the synchro generates analog synchro signals which bear a relationship to the status of the movable component. The analog synchro signals are converted to digital synchro signals by a plurality of analog-to-digital converters. A digital reference signal and the digital synchro signals are provided to a software-based digital signal processing circuit which preferably corrects constant and time-varying errors in the digital synchro signals and generates a status signal which is representative of the status of the movable component. For instance, the status signal may represent the angular position of the movable component. A different embodiment of the status signal may represent the angular velocity of the movable component.

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Inventors:

GOODE JOSEPH WILLIAM III
SMITH JOHN R
ASHCRAFT KENNETH D

Application Number:

PCT/US1999/000469

Publication Date:

October 14, 1999

Filing Date:

January 08, 1999

Export Citation:

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Assignee:

ADVANCED DISPLAYS CORP (US)

International Classes:

G01B7/30; G06K1/00; H03M1/48; H03M1/64; G06K; (IPC1-7): H03M1/48; G01B7/30

Foreign References:

US5757560A	1998-05-26
US3618073A	1971-11-02
US5646496A	1997-07-08
US5034743A	1991-07-23
US4876655A	1989-10-24

Other References: