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. 10, 1990
Filed:
Feb. 17, 1988
Bertrand Gabillard, Paris, FR;
Jean-Noel Patillon, Paris, FR;
U.S. Philips Corp., New York, NY (US);
Abstract
This fast-access data storage circuit is made of a semiconductor material with a two-dimensional carrier gas between two of its layers. The material is rendered superconducting by a suitable choice of the temperature and magnetic field conditions. The circuit is formed by a plurality of memory cells, each of which is formed by two selection transistors, a semiconductor loop, ohmic contacts and a grid which is arranged on the loop and one of the contacts. The superconductivity reduces the access time. One selection controls the reading of data or the writing of a state '1' in the loop, while the other selection transistor controls the cancellation of the data and hence the writing of a state '0' by means of the grid arranged on the loop.