Rotary drive for a data carrier

USRE38264E1 · kind E1 · reissue

Assignee

• Papst Licensing GmbH & Co. KG · DE

Inventor

• Helmut Hans · St. Georgen, DE

Key dates

• Filing date: Mar 26, 1997
• Grant date: Oct 7, 2003
• Expiry date: Mar 26, 2017

Classification

• Technology area (CPC —): General

Abstract

A data medium is driven by a brushless direct current more, and possesses control signals en a track which can be picked up by a sensing device and supplied to a switch arrangement for activation of the motor winding. The control signals on the track characterize at least those angular positions of the rotor with respect to the stator in which commutation is to be initiated.