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:
Nov. 19, 1996
Filed:
Sep. 03, 1993
Hidenobu Gochi, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor data storage device includes both volatile and non-volatile semiconductor data storage elements and prevents erroneous writing of data and contention of data at the time of connection and disconnection of an external power source. When the external power source is connected to or disconnected from the semiconductor data storage device in accordance with a reset signal of a power control circuit detecting a voltage, a card enable signal line, an output enable signal line, and a write enable signal line are forcibly deactivated for a predetermined period of time by a delay circuit and gate circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile