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:
Feb. 24, 1998
Filed:
Aug. 28, 1995
Hiroshi Katsuta, Tokyo, JP;
NEC Corporation, , JP;
Abstract
An information processing apparatus with a write protection function for a target storage area is provided, which includes a holding section for a write enable flag for indicating whether writing is to be permitted to the target storage area, and a write control section for permitting an intended write operation to the target storage area when the write enable flag held by the holding section indicates the same is to be permitted. The apparatus further includes a setting section for setting the write enable flag in the holding section when a dummy write instruction is executed for a command address, and a resetting section for resetting the write enable flag in the holding section when the intended write operation to the target storage area is executed. The resetting section may further include a section for resetting the write enable flag in the holding section when a predetermined number of instructions or bus cycles are executed after the dummy write instruction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile