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:
Nov. 09, 2010
Filed:
Oct. 08, 2008
Applicant:
Simone Ferri, Pogliano Milanese, IT;
Inventor:
Simone Ferri, Pogliano Milanese, IT;
Assignee:
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The circuit includes, upstream from a PWM quantizer, that is between the output of the sigma-delta modulator and the input of the PWM or PWM-like quantizer, a second or ancillary sigma-delta stage of any order and architecture, with the function of controlling the minimum dynamic of the sigma-delta modulator. This second sigma-delta stage is input with the output signal of the sigma-delta modulator summed to a signal corresponding to the difference between the input signal and the output signal of the second sigma-delta stage, delayed by a delay block.