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:
Sep. 11, 2001
Filed:
Feb. 29, 2000
Richard M. Lienau, Pecos, NM (US);
Pageant Technologies, Inc., Toronto, CA;
Abstract
A non-volatile RAM device is disclosed which utilizes a plurality of ferromagnetic bits (,) each surrounded by a coil of a write line (,) for directing the remnant polarity thereof is disclosed. The direction of magnetic remnance in each bit (,) is dictated by the direction of a current induced into write line (,). Further, a magneto sensor (,) comprising a magneto resistor (,) coupled to a pair of collectors (,&,) is placed approximate each bit (,). The magneto resistor (,) is coupled to a control circuit (,) for receiving current. The current passing across magneto resistor (,) is biased in a direction either right or left of the original current flow direction. The collectors are coupled to a pair of sense lines (,&,), which are in turn, coupled to a voltage differential amplifier (,). The collector in the direction of biased current flow, will receive a greater number of electrons than the other collector, and therefore have a greater negative charge. This voltage differential is conducted through the sense lines (,&,) to the voltage differential amplifier (,), where it is amplified and detected.