Microsoft Technology Licensing, LLC

Microsoft Corporation

Geoffrey T Dunbar

Sohail Baig Mohammed

Kirt A Debique

Eric H Rudolph

James Morris Alkove

Alexandre Vicktorovich Grigorovitch

Rebecca Claire Weiss

Robin C B Speed

Sumedh N Barde

Adil Ahmed Sherwani

Brian D Crites

Patrick Nelson

Chadd B Knowlton

Thomas W Holcomb

Serge Smirnov

Brian Patrick Evans

Joseph Ternasky

Eduardo P Oliveira

Ming Ma

Chengyun Chu

William Crow

Reid Joseph Kuhn

Robin Speed

Chih-Lung Lin

Arun Upadhyaya Kishan

Glenn Frederick Evans

Daniel J Miller

Olivier Colle

Clifford Paul Strom

Mei Ling Wilson

Matthijs Arjan Gates

Gareth Alan Howell

Jonathan D Schwartz

Clifford P Van Dyke

Craig M Dowell

Stephen C Rowe

Michael Grier

Shafiq Rahman

Scott J Fierstein

Daniel Rosenstein

Richard D Prologo

Matthew C Howard

Eric Rudolph

Niranjan S Nayak

Dong Wei

Chaitanya Dutt Upadhyay

Rajesh A Deshpande

Pranavakumar Punniamoorthy

Xiqiang Zhi

C Alan Ludwig

Wei-Ge Chin

Chih-Iung Bruce Lin

Kirt Debique

Matthew L c/o Microsoft Corporation Howard

Rebecca C Weiss

Alexandre Grigorovitch

Sohail B Mohammed

A system and method for a media processor separates the functions of topology creation and maintenance from the functions of processing data through a topology. The system includes a control layer including a topology generating element to generate a topology describing a set of input multimedia streams, one or more sources for the input multimedia streams, a sequence of operations to perform on the multimedia data, and a set of output multimedia streams, and a media processor to govern the passing of the multimedia data as described in the topology and govern the performance of the sequence of multimedia operations on the multimedia data to create the set of output multimedia streams. The core layer includes the input media streams, the sources for the input multimedia streams, one or more transforms to operate on the multimedia data, stream sinks, and media sinks to provide the set of output multimedia streams.

Media foundation media processor

Media scrubbing using a media processor

A system for processing a media content comprising an application space, a media control mechanism operating in the application space, the media control mechanism controlling the operation of the system, a user interface adapted to provide input to the media control mechanism, a protected space distinct from the application space, and a protected media pipeline operating in the protected space, the protected media pipeline coupled to the media control mechanism, the protected media pipeline adapted to access the media content, process the media content, and output the media content.

Protected media pipeline

A method of establishing a protected environment within a computing device including validating a kernel component loaded into a kernel of the computing device, establishing a security state for the kernel based on the validation, creating a secure process and loading a software component into the secure process, periodically checking the security state of the kernel, and notifying the secure process when the security state of the kernel has changed.

Protected computing environment

An image container file has at least first and second multimedia streams (MSs). The first MS includes first image data representing an image. The second MS includes arbitrary data, which can for example, correspond to: a different representation of the same image; annotations to the first image data; second image data that together with the first image data form a new image with greater dynamic range, resolution, field of view or other attributes that can be derived from processing two or more independent images; or an executable file related to the first MS. The image container file can also include an extensible metadata to hold information describing one or more multimedia streams of the image container file. Further, the image container file may include DRM information to provide information related to obtaining a license to access encrypted data or verifying the authenticity of encrypted or unencrypted data.

Image file container

A stream of content has multiple sub-streams, where each sub-stream comprises a part of the content and is divisible into logical blocks bounded by intrinsic partitions. For each sub-stream, a specification of the logical blocks bounded by the intrinsic partitions is defined and the sub-stream is divided into the logical blocks bounded by the intrinsic partitions. Each divided logical block is encrypted and then divided into one or more portions to produce corresponding pieces of data, and each piece of data is placed into a data packet as a payload thereof. Each data packet is transmitted to a recipient thereof, and the recipient can retrieve the pieces of data from the payloads of the packets, reconstruct the encrypted logical blocks, and manipulate the sub-stream on a per-logical block basis without necessarily decrypting each encrypted logical block.

Encryption scheme for streamed multimedia content protected by rights management system

In a protected media path for delivering content from a source to a sink, a source authority (SOTA) on behalf of the source decides with regard to a policy corresponding to the content that a particular type of action with the content is to be refused, and provides a particular enabler to an application. The provided enabler includes information and methods necessary for the application to obtain data necessary to respond to the refusal. The application receives the enabler at an interface thereof and the interface applies a common interaction procedure to run the enabler to obtain the data necessary to respond to the refusal.

Protected media path and refusal response enabler

Media processing technologies

A timeline source is described. In an implementation, a method includes examining a plurality of nodes within a media timeline, where at least two of the nodes reference respective media. The media timeline is for exposure over an API. The media timeline is divided into one or more presentations. Each presentation describes rendering of the media for a particular interval of time.

Timeline source

Media processing methods, systems and application program interfaces (APIs) are described. In but one embodiment, a media engine component, also referred to as a media engine, provides a simple and unified way of rendering media from an origin to a destination of choice without requiring intimate knowledge about the underlying components, their connectivity and management. Clients of the media engine need not worry about how to render the particular media, but rather can simply focus on what media to render and where to render the media. In at least one embodiment, a media session is provided and is used by the media engine and provides a mechanism by which additional components are made transparent to the application and, in at least some embodiment, the media engine. In some embodiments, the media engine and media session provide a simple API for building, configuring, and manipulating a pipeline of components (e.g. media sources, transforms, and sinks) for media flow control between an origin and one or more destinations.

Media processing methods, systems and application program interfaces

A set of interfaces and data structures (i.e., a demultiplexer API) represents a demultiplexer of multimedia data. The data structure utilizes a number of fields, each containing an element of a command. In one embodiment, at least seven commands are formed for proper operation of the demultiplexer, including Initialize, SetPresentationDescriptor, GetPresentationDescriptor, GetPendingPresentationDescriptor, ProcessInput, ProcessOutput, and Flush commands. The demultiplexer API allows the consumer to use muxed stream data such as DV in a uniform manner to generate elementary stream data such as audio and video (compressed or uncompressed) and allows demultiplexers to be used as an independent component.

Demultiplexer application programming interface

A method is provided for a computing device to copy (burn) a playlist of tracks to a portable medium, where each track corresponds to a piece of digital content. At least one of the pieces of content is rights-management (RM) protected and accordingly is burned to the portable medium only in accordance with a corresponding digital license.

Playlist burning in rights-management context

Growing community of inventors

Kirkland, WA, United States of America

Geoffrey T Dunbar