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:
May. 22, 2012
Filed:
Nov. 22, 2007
Mingtzong Lee, Redmond, WA (US);
Peter Wieland, Seattle, WA (US);
Nar Ganapathy, Redmond, WA (US);
Ulfar Erlingsson, San Francisco, CA (US);
Martin Abadi, Palo Alto, CA (US);
John Richardson, Sammamish, WA (US);
Mingtzong Lee, Redmond, WA (US);
Peter Wieland, Seattle, WA (US);
Nar Ganapathy, Redmond, WA (US);
Ulfar Erlingsson, San Francisco, CA (US);
Martin Abadi, Palo Alto, CA (US);
John Richardson, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A device driver includes a kernel stub and a user-mode module. The device driver may access device registers while operating in user-mode to promote system stability while providing a low-latency software response from the system upon interrupts. Upon receipt of an interrupt, the kernel stub may run an interrupt service routine and write information to shared memory. Control is passed to the user-mode module by a reflector. The user-mode module may then read the information from the shared memory to continue servicing the interrupt.