Patent ID: 9058759
Filing Date: 2015-06-16
Classification: G06F,G09G

Abstract:
1. A virtual display driver system, compatible with Windows Display Driver Model (WDDM), for generating a virtual display for a computer system with a Windows operating system comprising: a PCI filter driver configured to force an enumeration of a virtual display device; a virtual display kernel mode driver configured to provide management of memory and resources for the virtual display device in a manner that simulates a physical display device, wherein management includes management of a shared video memory, wherein the virtual display kernel mode driver uses chained callbacks at increasing IRQ levels for simulating a physical display device interrupt; and a user mode driver configured to search the computer system for an available physical display device, obtain an instance of a physical display user mode driver, and use the physical display device through the physical display user mode driver as a surrogate renderer for the virtual display driver system.