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:
Jul. 21, 1998
Filed:
Dec. 13, 1994
Applicant:
Inventors:
Ralph Allen Lipe, Woodinville, WA (US);
Raymond J Chen, Bellevue, WA (US);
Michael A Schmidt, Redmond, WA (US);
Sankar Ramasubramanian, Redmond, WA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395681 ;
Abstract
An operating system for a computer system having a protection scheme with a plurality of privilege rings provides services for message broadcasting from applications at less privileged rings to virtual drivers at a most privileged ring, and from the virtual drivers to applications. The virtual drivers can perform user mode operations including message broadcasting as an application by synchronizing to a thread of a user mode message server at application time, and setting the thread's user mode context to perform the operations.