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:
May. 08, 2007
Filed:
May. 03, 2006
Giuseppe Maiocchi, Capiago Intimiano, IT;
Ezio Galbiati, Agnadello, IT;
Michele Boscolo, Chioggia, IT;
Giuseppe Maiocchi, Capiago Intimiano, IT;
Ezio Galbiati, Agnadello, IT;
Michele Boscolo, Chioggia, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A method for sensing a back electromotive force induced in a winding of a voice coil electro-mechanical actuator controlled in a discontinuous mode by alternating conduction phases to off-phases includes sensing voltage at terminals of the winding during an off-phase The winding is driven during a conduction phase immediately preceding the off-phase to invert, during a final portion of the conduction phase before entering an off-phase, a direction of flow of the current through the winding.