Patents by Inventor David Liping Xu

David Liping Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • User mode device driver interface
    Patent number: 7644413
    Abstract: A user mode device driver interface (UMDDI) is disclosed. The UMDDI is preferably implemented in Windows® NT® version 5.0 and similar systems. The UMDDI allows a device driver to execute in user-mode while the graphics engine (GRE) remains in kernel-mode. The UMDDI exists as a layer between the user-mode driver and GRE; from the perspective of GRE, it encapsulates the user-mode driver and makes it appear to be a normal kernel-mode driver. The UMDDI layer handles the kernel-to-user and user-to-kernel transitions, parameter validation, and management of the kernel-mode and user-mode data and objects.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: January 5, 2010
    Assignee: Microsoft Corporation
    Inventors: Gilman K. Wong, Lingyun Wang, Hock S. Lee, Kirk O. Olynyk, David Liping Xu, James Andrew Alan Goossen
  • User mode device driver interface for translating source code from the user mode device driver to be executed in the kernel mode or user mode
    Patent number: 6871350
    Abstract: A user mode device driver interface (UMDDI) is disclosed. The UMDDI is preferably implemented in Windows® NT® version 5.0 and similar systems. The UMDDI allows a device driver to execute in user-mode while the graphics engine (GRE) remains in kernel-mode. The UMDDI exists as a layer between the user-mode driver and GRE; from the perspective of GRE, it encapsulates the user-mode driver and makes it appear to be a normal kernel-mode driver. The UMDDI layer handles the kernel-to-user and user-to-kernel transitions, parameter validation, and management of the kernel-mode and user-mode data and objects.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: March 22, 2005
    Assignee: Microsoft Corporation
    Inventors: Gilman K. Wong, Lingyun Wang, Hock S. Lee, Kirk O. Olynyk, David Liping Xu, James Andrew Alan Goossen
  • User mode device driver interface
    Publication number: 20040216145
    Abstract: A user mode device driver interface (UMDDI) is disclosed. The UMDDI is preferably implemented in Windows® NT® version 5.0 and similar systems. The UMDDI allows a device driver to execute in user-mode while the graphics engine (GRE) remains in kernel-mode. The UMDDI exists as a layer between the user-mode driver and GRE; from the perspective of GRE, it encapsulates the user-mode driver and makes it appear to be a normal kernel-mode driver. The UMDDI layer handles the kernel-to-user and user-to-kernel transitions, parameter validation, and management of the kernel-mode and user-mode data and objects.
    Type: Application
    Filed: May 21, 2004
    Publication date: October 28, 2004
    Applicant: Microsoft Corporation
    Inventors: Gilman K. Wong, Lingyun Wang, Hock S. Lee, Kirk O. Olynyk, David Liping Xu, James Andrew Alan Goossen
  • USER MODE DEVICE DRIVER INTERFACE
    Publication number: 20020152331
    Abstract: A user mode device driver interface (UMDDI) is disclosed. The UMDDI is preferably implemented in Windows® NT® version 5.0 and similar systems. The UMDDI allows a device driver to execute in user-mode while the graphics engine (GRE) remains in kernel-mode. The UMDDI exists as a layer between the user-mode driver and GRE; from the perspective of GRE, it encapsulates the user-mode driver and makes it appear to be a normal kernel-mode driver. The UMDDI layer handles the kernel-to-user and user-to-kernel transitions, parameter validation, and management of the kernel-mode and user-mode data and objects.
    Type: Application
    Filed: December 15, 1998
    Publication date: October 17, 2002
    Inventors: GILMAN K. WONG, LINGYUN WANG, HOCK S. LEE, KIRK O. OLYNYK, DAVID LIPING XU, JAMES ANDREW ALAN GOOSSEN