Shared surface hardware-sensitive composited video

US8634695B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Nimesh Amin · Seattle, US
• Akhil Kaza · Sammamish, US
• Fabian Toader · Sammamish, US
• Thomas W. Getzinger · Redmond, US
• Lucia Darsa · Clyde Hill, US
• Robert C. Aldinger · Seattle, US
• Andrew Dadi · Seattle, US

Key dates

• Filing date: Oct 27, 2010
• Grant date: Jan 21, 2014
• Expiry date: Jun 23, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N21/42653
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In a low-power device a runtime hands video capture and other markup language video objects to a video service, which renders them onto a shared surface. An application-specific compositor manipulates the shared surface, e.g., by texture wrapping or animation. A system compositor composites the manipulated shared surface with other data, such as rendered frames from other application-specific compositors and/or computer generated text. The device then displays the attendant rendered, manipulated, and composited video frames. In some cases, only a single copy of the shared surface is utilized. When the video object's shape, alignment, and opacity satisfy predetermined criteria, the video service renders the video object onto the shared surface using a hardware scaler; otherwise, rendering is done without using the hardware scaler.