Systems and methods for virtualizing graphics subsystems
CA 2528116 C · Owner: Microsoft Technology Licensing, Llc · Inventors: Blythe, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Systems and methods for applying virtual machines to graphics hardware are provided. In various embodiments of the invention while supervisory code runs on the CPU the actual graphics work items are run directly on the graphics hardware and the supervisory code is structured as a graphics virtual machine monitor. Application compatibility is retained using virtual machine monitor (VMM) technology to run a first operating system (OS) such as an original OS version, simultaneously with a second OS such as a new version OS, in separate virtual machines (VMs). VMM technology applied to host processors is extended to graphics processing units (GPUs) to allow hardware access to graphics …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 28, 2005 and granted March 17, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.