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. 10, 2008
Filed:
Feb. 07, 2003
Katsutoshi Moriyama, Saga, JP;
Hironobu Mori, Nagasaki, JP;
Hisanobu Tsukazaki, Nagasaki, JP;
Sony Corporation, , JP;
Abstract
The object of the present invention is to provide a composite storage circuit capable of executing a writing operation and reading operation at high speed, and as the result of that, a semiconductor apparatus capable of realizing an instant-on function and an instant-off function is provided. The composite storage circuit is constituted of a volatile storage circuit and a non-volatile storage circuit connected in parallel, and the same information as storage information in the volatile storage circuit is stored in the non-volatile storage circuit. Moreover, as a power supply to the volatile storage circuit decreases, storage information in the volatile storage circuit is written in the non-volatile storage circuit. Further, after a power failure or a decreased power supply, storage information from the non-volatile storage circuit is returned to the volatile storage circuit upon restarting power feeding. Further, a semiconductor apparatus is constituted by having the composite storage circuit described above.