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. 27, 1993
Filed:
Apr. 30, 1991
Kwabena A Boahen, Pasadena, CA (US);
Andreas G Andreou, Baltimore, MD (US);
Philippe O Pouliquen, Potomac, MD (US);
Robert E Jenkins, Laurel, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
A two transistor current-controlled current conveyor (C4) circuit is provided which exploits the translinear properties of the MOS transistor in subthreshold and uses unidirectional current signals. As a result, the circuits of the invention achieve high functionality and integration density with very low power dissipation. Two C4 circuits connected to and communicating through a bidirectional junction circuit of the invention permit the transmission of independent, bidirectional signals. These circuits are useful for implementing synthetic neural systems such as associative memories and silicon retinas, such as winner-takes-all and pyramidal neuron circuits and the outer-plexiform layer of a retina.