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:
Jan. 03, 2023
Filed:
Sep. 11, 2020
Tohoku University, Sendai, JP;
Canon Medical Systems Corporation, Otawara, JP;
Takahiro Hanyu, Sendai, JP;
Naoya Onizawa, Sendai, JP;
Akira Tamakoshi, Sendai, JP;
Hiroyuki Fujita, Toshima, JP;
Hitoshi Yamagata, Otawara, JP;
TOHOKU UNIVERSITY, Sendai, JP;
CANON MEDICAL SYSTEMS CORPORATION, Otawara, JP;
Abstract
A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.