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:
Jun. 29, 1976
Filed:
May. 19, 1975
Applicant:
Inventor:
Daniel Clayton Harrington, Fridley, MN (US);
Assignee:
Control Data Corporation, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; G06G / ;
U.S. Cl.
CPC ...
235197 ; 2351935 ; 235194 ; 307229 ; 328145 ;
Abstract
A transistorized non-linear device is provided for converting input voltage signals to logarithmic current output signals and input current signals to exponential output voltage signals. This is performed using operational amplifiers having as the reference current for the computational element the collector current of a transistor which is operated with a near zero collector-base voltage. Square, square root, product and geometric mean functions are shown in circuits according to the invention.
Harrington, Daniel. (1976). Transistor power and root computing system (U.S. Patent No. 3967105). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3967105
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile