摘要:
The invention comprises devices and methods for processing multimedia data. Such methods can include obtaining at least one metric indicative of a difference for a selected frame and adjacent frames in a plurality of video frames, the metric comprising bi-directional motion information and luminance difference information, determining a shot event in the selected frame based on the at least one metric, and adaptively encoding the selected frame based on the shot event. An apparatus for processing a multimedia data can include a motion compensator configured to obtain metrics indicative of a difference between adjacent frames of a plurality of video frames, said metrics comprising bi-directional motion information and luminance information, a shot classifier configured to determine a shot event in the plurality of video frames based on said metrics, and an encoder configured to adaptively encode the plurality of frames based on the shot event.
摘要:
Methods and apparatus for service acquisition. In an aspect, a method is provided for service acquisition. The method includes generating one or more channel switch video (CSV) signals associated with one or more multimedia signals, encoding the CSV signals and the multimedia signals to produce error coded blocks, and encapsulating the error coded blocks into a multiplex signal. In an aspect, an apparatus is provided for service acquisition. The apparatus includes a source encoder configured to generate one or more channel switch video (CSV) signals associated with one or more multimedia signals, an error encoder configured to encode the CSV signals and the multimedia signals to produce error coded blocks, and a packer configured to encapsulate the error coded blocks into a multiplex signal.
摘要:
Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes obtaining content information of multimedia data, and encoding the multimedia data so as to align a data boundary with a frame boundary in a time domain, wherein said encoding is based on the content information. In another aspect, a method of processing multimedia data includes obtaining a content classification of the multimedia data, and encoding blocks in the multimedia data as intra-coded blocks or inter-coded blocks based on the content classification to increase the error resilience of the encoded multimedia data. Apparatus that can process multimedia data described in these methods are also disclosed.
摘要:
Methods and apparatus to process multimedia data enabling faster channel acquisitions, improved error recovery and improved efficiency. An encoder device encodes a first portion of multimedia data using inter-coding to generate a first version, and encodes the first portion of multimedia data using intra-coding to generate a second version. A decoder device receives a first version of a first portion of multimedia data, wherein the first version is inter-coded, receives a second version of the first portion of multimedia data, wherein the second version is intra-coded, and selectively decodes the first and second received versions.
摘要:
Media distribution systems may include methods and apparatus to perform memory management on a wireless devices configured to receive non-real time portions of media services. Such methods and apparatus may be based upon an allowable capacity of presentations storable in device memory, as well as on a required memory associated with each presentation in a media service. Such methods and apparatus allow a device to subscribe to a media service based upon sufficient available memory in the device to support the service.
摘要:
System for distributing content to support multiple customer service entities and content packagers. A method is provided for distributing content. The method comprises receiving BCS parameters that identify one or more content packagers that are associated with one or more BCS providers. The method also includes receiving packager parameters that describe one or more packages associated with the one or more content packagers. The method also includes generating system information that comprises the BCS parameters and the packager parameters, and transmitting the system information.
摘要:
Methods and apparatus for providing power efficient time management for mobile media. In an aspect, a method is provided that operates to provide time management for mobile media that is distributed over a network. The method includes receiving the mobile media comprising source video frames that are associated with a source time reference, and capturing a portion of the source video frames. The method also includes re-labeling the portion of the source video frames based on a system time reference to produce synchronized video frames, wherein the network provides communications based on the system time reference, and assembling a transmission frame that comprises the synchronized video frames.
摘要:
A method and an apparatus for converting multimedia data of a digital format to multimedia data of an analog format, such as NTSC or PAL is disclosed, multimedia synchronous digital multimedia interfaces may be supported in a similar manner. The digital format includes image data and timing data where the timing data includes presentation times stamp information for the image data and is compatible with a communication system in which the transmitter and receiver operate based on a global clock, such as a GPS clock.
摘要:
Conserving power for coded transmissions comprises ceasing to process parity packets once associated data packets are deemed correct or corrected. Once data packets are deemed correct or corrected, the receiving unit can shut off during the transmission of parity packets.
摘要:
System for providing hierarchical services in a data network. A method is provided for rendering hybrid presentations. The method includes caching one or more content items, and detecting a presentation event associated with a real-time service. The method also includes retrieving a selected content item from the one or more content items based on the presentation event, and rendering the selected content item.