摘要:
A method and apparatus for combining video frame sequences with a video display of an interactive program guide (IPG). The apparatus comprises a plurality of compositors that combine background information, video frame sequences and program guide graphics into a single video frame sequence. The sequence is then digitally encoded to form an MPEG-like bitstream. The same background information and informational video is composited with a different program guide graphic to form another video sequence that is also encoded. A plurality of such sequences are produced with each sequence having a different program guide graphic. Each sequence is encoded and then multiplexed into a transport stream such that all the encoded sequences are transmitted to a subscriber's terminal using a single transport stream. As such, the subscriber can transition from one program guide to the next without interruption of the background or video display as the program guide graphic is changed.
摘要:
Techniques for transmitting multiple “slices” of information for a particular location of a user interface, which can be used to present more information to a viewer for a limited-size viewing area. Multiple slices can be associated with a particular slice location of a user interface. In a first slice delivery and presentation scheme, multiple slices for a particular location of an interactive program guide (IPG) page are transmitted from the head-end at different times, and the slices can be appropriately time stamped for presentation at the designated times. In a second scheme, multiple slices are concurrently transmitted for a particular location of an IPG page, and one of the multiple slices can be selected for processing and display. In a third scheme, one slice is transmitted for each slice location, and additional slices can be transmitted for a particular location upon receiving a request from the terminal.
摘要:
An apparatus for providing multiple session-based services at a terminal, an exemplary apparatus includes a memory configured to support a plurality of software layers including a service layer communicating with terminal resources via a root layer disposed therebetween; and a processor, for executing instructions associated with a plurality of service layer applications, a root layer application and a control mechanism; each of the service layer applications communicating with terminal resources to provide thereby a respective user interface; wherein the control mechanism selectively causing at least one of the service layer applications to enter an active state, the user interface associated with a service layer application being adapted in response to the service layer application entering the active state.
摘要:
Methods and apparatus are provided for multi-user communication of multimedia content including dividing a client's scene into a non-shared and shared parts. In a disclosed embodiment, the non-shared parts of a scene may be organized into one or more single-user nodes with which other clients cannot interact. The shared parts of the scene are organized into one or more multi-user group nodes. These multi-user group nodes enable multiple clients to access the same scene and to interact with its shared content. Each multi-user group node is an extension of a Group node. In addition to the functionality provided by a single-user group node, a multi-user group node wraps its children with control mechanisms required for supporting multi-user communication. These control mechanisms may be provided as boolean exposed fields that act as switches to control initiation of interaction, update control, privacy, and object accessibility. A client's scene may have multiple multi-user group nodes represented in hierarchical order or each representing a different part of a shared scene.
摘要:
Multi-user communication of multimedia content in a client-server system is provided by dividing a client's scene into non-shared and shared parts. In one embodiment, the non-shared parts of the scene are organized into one or more MPEG-4 Group nodes. The shared parts of the scene are organized into one or more multi-user group nodes, each of which is an extension of an MPEG-4 Group node. In addition to the functionality provided by an MPEG-4 Group node, a multi-user group node provides boolean exposed fields that act as switches to control initiation of interaction, update control, privacy, and object accessibility.