Patent · US Expired

Tracking device with a coil driven actuator and a sensor coil to determine a position of the actuator

US6167005A · kind A · utility

0Cited by

5References

8Claims

0Family size

Assignee

Deutsche Thomson-Brandt GmbH · DE

Inventors

Juergen Kaaden · Villingen, DE
Peter Mahr · Cochem, DE
Gerhard Reiner · Villingen-Schwenningen, DE

Key dates

Filing date	Sep 23, 1998
Grant date	Dec 26, 2000
Priority date	—
Expiry date	Sep 23, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG11B21/10
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a tracking device in which a position of a coil driven actuator is determined using a sensor coil. A reference signal 12 having a determined voltage and frequency is fed to a driven coil. A position of the coil driven actuator is proportional to a distance between the driving coil and the sensor coil. The sensor coil produces an alternating voltage induced by an alternating magnetic field emitted by the driving coil. The alternating voltage is used to determine the position of the actuator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.