Microsoft Technology Licensing, LLC

Microsoft Corporation

Donald D Karlov

Erik Michael Geidl

Bodin Dresevic

Rudolph Balaz

Gilles Khouzam

Jeffrey West Pettiross

Sam J George

Wenbo Zhang

Federico Schliemann

Gregory Nicholas Hullender

Subha Bhattacharyay

Patrick M Haluptzok

John R Bennett

Leroy B Keely

Adrian James Garside

Marieke Watson Iwema

Shiraz M Somji

Tobiasz Alexander Zielinski

Joshua Clow

Robert A Dain

Ravi Soin

Bob Dain

Mike Harsh

Grady Leno

Ashraf A Michail

Michael John Hillberg

Gurpratap Virdi

Eldar Azerovich Musayev

Luis M Huapaya

Michael R Harsh

Thomas R Wick

Akshay Johar

Lawrence Wayne Olson

John Gossman

Alexander Gournares

Alexander G Gounares

Gregory Carl Hitchcock

Michael J Duggan

Greg D Schechter

Serge Smirnov

Tanya Matskewich

Weibing Zhan

Greg D Schechler

Serge Smimov

Erik M Geidl

Jeffrey W Pettiross

A system for video playback switching in response to changing network conditions. The system includes streaming, from a distribution device such as a server, respective index files for a low bit rate version and a high bit rate version of the video file, to remotely executing instantiations of a low bit rate media player and a high bit rate media. Playback of the video file is begun by the high bit rate media player receiving and playing the high bit rate version from the server. Upon an indication of impeded network conditions, a transition point is selected, wherein the transition point indicates where downloading of the high bit rate version stops and where downloading of the low bit rate version begins. The low bit rate media player is then positioned to begin playback at the transition point. The stream of the video file is then switched to the low bit rate player upon encountering the transition point.

System for adaptive video switching for variable network conditions

Described is a technology by which code, such as an untrusted web application hosted in a browser, provides content through an interface for playback by an application environment, such as an application environment running in a browser plug-in. Content may be in the form of elementary video, audio and/or script streams. The content is in a container that is unpackaged by the application code, whereby the content may be packaged in any format that the application understands, and/or or come from any source from which the application can download the container. An application environment component such as a platform-level media element receives information from an application that informs the application environment that the application is to provide media stream data for playback. The application environment requests media stream data (e.g., samples) from the application, receives them as processed by the application, and provides the requested media stream data for playback.

Media streams from containers processed by hosted code

A method for video playback switching in response to changing network conditions. The method includes accessing a server to retrieve respective index files for a low bit rate version and a high bit rate version of the video file, and instantiating a low bit rate media player and a high bit rate media. Playback of the video file is begun by the high bit rate media player streaming the high bit rate version from the server. Upon an indication of impeded network conditions, a transition point is selected, wherein the transition point indicates where downloading of the high bit rate version stops and where downloading of the low bit rate version begins. The low bit rate media player is then positioned to begin playback at the transition point. Playback of the video file is then switched to the low bit rate player upon encountering the transition point.

Adaptive video switching for variable network conditions

Among other things, one or more techniques and/or systems are disclosed for rendering a glyph. Rendering data for the glyph can be received, such as size, shape, color, etc., along with first sub-pixel position for initially rendering the glyph on a display. A first rendering quality can be identified for the first sub-pixel position and second rendering quality can be identified for a second sub-pixel position, which may comprise an alternate rendering position. A sub-pixel position shift can be selected for the glyph based at least upon a comparison of the first and second rendering qualities. The sub-pixel position shift can comprise a difference between the first sub-pixel position and the second sub-pixel position, where the second rendering quality is selected/preferable over the first rendering quality. The glyph can be rendered by applying the selected sub-pixel position shift.

Glyph rendering

Adaptive filtering techniques are set forth that improve video playback performance. A color similarity metric is computed for source pixels undergoing an image transform operation to determine color values of a target pixel location. The value of the color similarity metric defines what algorithm is used to determine the color values of the target pixel location from the source pixels. While the computation of the color similarity metric introduces additional instructions for each pixel, going against conventional wisdom, enormous performance savings by avoiding unnecessarily complex sets of interpolation instructions where a simpler instruction set suffices, outweighs any such cost from additional instructions.

Adaptive filtering for image transform processes

A transparent graphical user interface that overlays the user interfaces of other applications. The transparent user interface receives handwriting input and displays handwriting objects represented by handwriting input received in the area of the transparent handwriting interface. The transparent user interface of the invention can be expanded to include most of the display area of a computer, thereby allowing the user to write anywhere within the display area. This also allows the user to write multiple lines of text. Additionally, because the user interface is transparent, it allows the user to see the underlying graphical user interfaces for other applications, including applications that receive text recognized from the handwriting input written into the transparent handwriting interface. Further the transparent interface allows the user to interact with underlying graphical user interfaces.

Write anywhere tool

A method for dividing a display into zones at system initialization for tracking which zones have any pixels revised so that, when the time comes to update the display, only the zones requiring revision (that is, those zones in which any pixel has been revised) are copied from shadow memory to the frame buffer for display on the display device. The memory for tracking these zones can be allocated at initialization and held since it is relatively small. Consequently, a significant performance gain may be achieved by avoiding the shortcomings of the existing methods in the art notwithstanding the fact that some 'clean' pixels in each zone having even a single changed pixel are also rewritten to the frame buffer.

Systems and methods for updating a frame buffer based on arbitrary graphics calls

The values of each possible component output R, G, and B may be pre-computed for all values of each possible component input Y, U, and V. Each contribution of Y, U, and V input may then be loaded into a register and added in parallel, without overflow, resulting in a computationally inexpensive RGB output from a YUV input. In one embodiment, contributions of Y, U, and V to each of R, G, and B are retrieved from pre-computed tables. The YUV contributions for each value of R, G, and B are packed into three data elements and added together in parallel, resulting in a value for an RGB output.

Fast filtered YUV to RGB conversion

The present invention relates to storing electronic ink. Ink is stored in a data structure that permits later retrieval by applications. The ink includes stroke information and property information. Properties may be associated globally with the ink strokes and/or with each stroke individually. The disclosed embodiments include a data structure that supports ink for multiple applications. Using the disclosed storage system, method, and data structure, various applications may expand on ink to include additional attributes while permitting the ink to be used in applications not supporting the additional attributes. When encountering an unknown tag, the applications will skip past the end of the tag and its associated data to start reading the next tag.

Serial storage of ink and its properties

An improved system for managing user inputs and z-order in a graphic user interface (GUI) environment is disclosed. A GUI element may include a plurality of keys corresponding to keys on a typical keyboard, and may serve as a replacement for the keyboard. The system permits an application having an input focus to retain the input focus while inputs are received in the GUI element, and even transient user interface elements (e.g., menus) will remain displayed in those applications after the user inputs are entered. Input pen and mouse events may first be forwarded to the input area application, which may remove the events from the normal circulation, preventing other applications from learning of the events, and then post those events to the input panel application separately.

Method and apparatus for managing input focus and Z-order

Method and apparatus for managing input focus and z-order

The present invention provides for improving image clarity through sub-pixel positioning of the image in a grid space based on pixel homogeneity scores. The pixel homogeneity scores indicating the uniformity of state for sub-pixels produced from an over-sampling of the pixels within the grid space. A representation of an image (or at least a portion thereof) is positioned at various sub-pixel locations with in the grid space, and pixel homogeneity scores are calculated for the various locations. Based on a comparison of the pixel homogeneity scores, a position to display the image is chosen such that image rendering is optimized or at least improved.

Using pixel homogeneity to improve the clarity of images

Growing community of inventors

Woodinville, WA, United States of America

Donald D Karlov