Microsoft Technology Licensing, LLC

Microsoft Corporation

Andrei Baioura

Leonardo Esteban Blanco

Reiner Fink

Ivan J Leichtling

Joy Chik

Max Alan McMullen

Paul C David

Daniel Wood

Marcus J Andrews

Mikhail V Leonov

Zhigang Xu

Sriram Subramanian

Oreste Dorin Ungureanu

Gilles Khouzam

Bennett Sorbo

Matt Calkins

Vlad Alexandrov

Ameet Arun Chitre

Matthew W Calkins

Mohamed Sadek

Pawel Wiktor Olszta

Alice Tang

Deepali Bhagvat

Mary Luo

Sriya Sampath

Max Mcmullen

Marcus Andrews

Mikhail Leonov

Leonardo Blanco

To manage dynamic adjustment of the refresh rate of a computer display, the operating system defines at least two playback modes: one or more custom modes that can be selected by applications, and a standard mode which is a default setting for the system that can be expected by applications. The operating system provides an application programming interface that enables an application to request using a custom mode. If approved to use the custom mode, then the application presents frames for display based on the custom mode. The operating system stores timing data for each buffered frame indicating how to play the frame in both standard mode and the custom mode. If a transition back to the standard mode occurs, the operating system uses the timing data to properly present frames of video until the application stops generating frames of video in the custom mode.

Managing transitions of adaptive display rates for different video playback scenarios

A technique for generating content for a stereo 3D display buffer having both stereo 3D graphic objects and non-stereo 3D graphic objects that may be utilized to render stereo 3D content onto one or more windows of a display. The technique incorporates content from stereo 3D application frame buffers into a composition tree that represents the graphic objects in each window displayed on a computing device. At each refresh cycle, the composition tree is traversed to generate content for a stereo 3D display buffer that is then used to draw one or more windows onto a display.

Composing stereo 3D windowed content

A system that provides graphics commands that represent graphics or an image, to a consuming process. The graphics commands are represented by a visual tree which includes objects and resources describing the objects. The objects and resources are communicated to a composition engine that creates an analogous composition tree that is analogous to the visual tree. The composition tree is used to render the graphics or image.

High level graphics stream

Described is a method and system in which timing intervals are generated from clock properties, and used to interpolate values for smooth animation. A high-level component maintains a set of clocks related to animated objects and/or linear media in a scene graphs. The clocks correspond to clock properties received from an application program. The clocks are processed into event lists at the higher level, from which timing interval data is generated and passed to a low-level component. The low-level component, which generally operates at a faster rate than the high-level component, uses the timing interval data to rapidly calculate current values for an animated object. Interaction, such as to pause an animation or resume a paused animation, causes the high-level component to re-compute the event list and regenerate new animation intervals for affected clocks. The new animation intervals are passed and used by the lower-level component.

Multiple-level graphics processing with animation interval generation

A communications protocol is described that governs asynchronous exchange of data between a high level animation system and a low level animation system. The high level animation system has a variable, medium-frequency frame rate and is optimized for interactivity. The low level animation system has a constant, high frequency frame rate and is optimized for high refresh frame rate. The communications protocol includes messages that can be sent by the high-level animation system to the low-level animation system to designate an animation and how the animation is to change over a specified period of time. As a result, the low-level system can display the animation at the high refresh rate even if animation data is not received from the high-level system for every frame.

Communication protocol for synchronizing animation systems

Communication protocol for synchronizing animation

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Andrei Baioura