Microsoft Technology Licensing, LLC

Sean Hayes

Robert Kilroy Hughes, Jr

Olivier Colle

James Charles Finger, Ii

Andrew Clinick

Peter J Torr

Andrew William Jewsbury

See-Mong Tan

An interactive multimedia presentation has a predetermined presentation play duration, a video content component (which may include video, audio, data, or any combination thereof), and an interactive content component. Methods and systems for playing the presentation include specifying a time when a particular media object is renderable. The time is specifiable using an application instruction that references either a first timing signal having a rate that is based on the play speed of the presentation, or a second timing signal having a continuous rate. One example of an application instruction usable as described above is an element associated with an XML data structure. An attribute of the element, such as the clock attribute, may be used to provide time values for the element that reference either timing signal. The attribute is used to maintain frame-accurate synchronization between the video and the interactive content components of the presentation.

Synchronization aspects of interactive multimedia presentation management

An interactive multimedia presentation playable by a presentation system includes a media content component and an interactive content component. The interactive content component includes one or more applications, which provide instructions for organizing, formatting, and synchronizing the presentation of interactive objects to a user. Prior to playing the interactive multimedia presentation, an entity responsible for authoring or publishing one or more of the applications is digitally identified and authenticated, or it is determined that the applications are unsigned. Prior to and/or during play of the interactive multimedia presentation, authorization for performing certain actions (such as executing certain application instructions, especially those that access functionality of the presentation system, computer-readable media, or external networks) is granted via a permission-based model. User input and application requests may be considered in determining whether an application is granted permission to perform certain actions.

Advanced content authentication and authorization

The present disclosure relates to providing timing references to multimedia objects that are reference by a separate document that contains elements that particular reference the multimedia objects. The elements are associated with other elements that may be part of another external document. The elements of the external document are grouped in time containers that describe when the elements are to be rendered, which describes when the elements of the separate document are to be rendered, and describes when the multimedia objects are to be rendered. Other documents may receive rendition timing from association with the separate document. An event listener element may be included in the external document that is responsive to events affecting elements in the separate document.

Time references for multimedia objects

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Bristol, United Kingdom

Sean Hayes