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. 09, 1991
Filed:
Dec. 26, 1990
Applicant:
Inventors:
Robert C Ledzius, Austin, TX (US);
James S Irwin, Paige, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341143 ; 375 27 ;
Abstract
An analog signal is input to a converter where a feedback signal is subtracted to form an analog error signal. The analog error signal is then processed through a first quantizer to provide a course output bit. The difference between the input and output of the first quantizer is then processed through a second quantizer to provide a trim output bit. The two bits are combined and returned as the feedback signal and are provided to a decimation filter which will provide the digital output representation of the analog input.