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:
Sep. 04, 2007
Filed:
Sep. 29, 2005
Michele Boscolo, Chioggia, IT;
Michele Boscolo, Chioggia, IT;
STMicroelectronics S.r.l., Agrate Brianza (MI), IT;
Abstract
The present invention refers to a digital apparatus suitable for driving a load. The apparatus an input for receiving a voltage signal varied by an external disturbance and comprises means for sampling at least the external disturbance such as noise, and a driving circuit such as a pulse width modulator for driving the load with a suitable output voltage. The apparatus includes a control circuit suitable for generating digital commands representative of a desired output voltage of the apparatus. The apparatus also comprises digital correction circuit suitable for generating a correction signal on the basis of the difference between the value of the current sample and the value of the previous sample of at least the external disturbance. The output of the driving circuit is governed by the correction signal.