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:
Feb. 25, 1992
Filed:
Aug. 13, 1990
Applicant:
Inventor:
Chih C Chang, Huntingdon Valley, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341153 ; 341165 ;
Abstract
An apparatus for converting the sum of m digital signals to an analog signal utilizing resistors and switches only. The operating time of the apparatus is the time required to pass the signal through a single switch. This invention can also be utilized in an A/D converter for converting the difference between an analog signal and several digital signals to a digital signal without using extra time to compute the subtraction.
Chang, Chih. (1992). D/a and a/d converters utilizing weighted impedances (U.S. Patent No. 5091728). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5091728
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile