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:
Jul. 05, 2005
Filed:
Apr. 30, 2001
Gordon W. Roberts, Montreal West, CA;
Mohamed Hafed, Montreal, CA;
Sébastien Laberge, St-Augustin, CA;
Gordon W. Roberts, Montreal West, CA;
Mohamed Hafed, Montreal, CA;
Sébastien Laberge, St-Augustin, CA;
McGill University, Montreal, CA;
Abstract
An efficient technique for generating accurate on-chip DC reference voltages is based on filtering a digital pulse modulated sequence in order to extract its average value encoding a DC level, A passive on-chip filter is used for simplicity with an all-digital modulator implementation. Modulation is proposed using pulse-width and preferably pulse-density modulation methods. The latter has the advantage of using a significantly smaller filter which translates into a smaller implementation and faster operational settling times. Many digital pulse modulation generators are proposed.