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:
Apr. 18, 1989
Filed:
Oct. 02, 1987
Applicant:
Inventors:
Mike R Coleman, Beaverton, OR (US);
John J Ciardi, Beaverton, OR (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ;
U.S. Cl.
CPC ...
328114 ; 307479 ; 331 18 ; 328138 ;
Abstract
A digital signal synthesizer stores a representation of a desired analog signal in the form of digital samples. The digital samples are converted to an analog signal by a sample clock having a frequency greater than or equal to twice the bandwidth of the desired analog signal. The analog signal is band pass filtered to recover the desired analog signal.
Coleman, Mike. (1989). Digital signal synthesis using low frequency sampling clock (U.S. Patent No. 4823090). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4823090
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile