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. 15, 2002
Filed:
Feb. 18, 2000
Applicant:
Inventor:
Jean Bausch, München, DE;
Assignee:
Siemens Noxdorf Informationssysteme Aktiengesellschaft, Paderborn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/200 ; G06F 1/214 ;
U.S. Cl.
CPC ...
G06F 1/200 ; G06F 1/214 ;
Abstract
When there are write accesses to user pages in a data processing system that are marked as write-protected in a translation memory, the method checks, after an interrupt request, a corresponding page table entry and also whether there is an access with system authorization. If there is an access with system authorization, the write-protection is temporarily dropped until an operating mode changes from the system to a user. In order for the write-protection to be subsequently restored, control bits are used as indicators that are used to declare entries in the translation memory affected by the system accesses to be declared invalid.