摘要:
A method for processing a plurality of motion vectors is disclosed. The method includes determining a number of different block sizes in the video frame; and, performing a variable block size motion vector process if the number of different block sizes in the video frame is greater than one, the variable block size motion vector process comprising constructing a pyramid of motion vectors from the plurality of motion vectors, the pyramid having at least a first layer and a second layer of motion vectors, each of the first and second layers having a set of motion vectors based on a particular block size. An apparatus for performing the inventive method is also disclosed.
摘要:
This disclosure describes a number of techniques for processing multimedia data that can improve multi-program “picture-in-picture” viewing, particularly in a wireless mobile apparatus setting. In one example, a method includes receiving multiple channels of the multimedia data, decoding frames associated with two or more of the channels, presenting first frames of a first channel at a first frame rate, and presenting second frames of a second channel at a second frame rate while presenting the first frames, wherein the second frame rate is lower than the first frame rate. In another example, method includes receiving multiple channels of the multimedia data, receiving channel switch frames (CSFs) associated with the multiple channels, and simultaneously presenting the CSFs associated with two or more of the multiple channels to a user.
摘要:
As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user input data received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. The input data received at the wireless sink device can be a voice command.
摘要:
As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user inputs received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. As part of transmitting user input to the source device, the sink device can generate a data packet with a data packet header that includes a timestamp field, and the source device can process the data packet based on a timestamp in the timestamp field.
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:
The invention is directed to a method and apparatus for providing temporal scaling frames for use in digital multimedia. The method involves using a removable unidirectional predicted temporal scaling frame communication along with intra-coded frames and/or inter-coded frames. The method involves the ability to selectively remove the temporal scaling frame(s) from being transmitted or decoded in order to satisfy, for example, power limits, data rate limits, computational limits or channel conditions. Examples presented include encoders, transcoders and decoders where the decision to drop the removable temporal scaling frames could be made.
摘要:
This disclosure is directed to techniques for encoding and decoding transitional effects, i.e., visual video effects that are used to transition from a current scene of a multimedia sequence. According to the disclosed techniques, an encoding device detects a transitional effect associated with a multimedia sequence during the encoding of the multimedia sequence, and transmits information as part of an encoded multimedia sequence to identify the transitional effect associated with the encoded multimedia sequence to a decoder. The information may comprise metadata that can be used by the decoder to simulate or re-create the transitional effect. The decoder simulates a transitional effect in response to the information.
摘要:
This disclosure relates to techniques, devices, and systems for using a mobile electronic device to provide multimedia content. One example method of providing multimedia content includes receiving, at an Internet Protocol Multimedia Subsystem (IMS) enabled first electronic device, multimedia content from a content-providing electronic device via an IMS network, where the multimedia content has a first format. The method also includes converting, at the IMS-enabled first electronic device, the multimedia content from the first format to a second format that is different from the first format. The method further includes transmitting, from the IMS-enabled first electronic device to a second electronic device, the converted multimedia content in the second format, where the converted multimedia content is transmitted from the first electronic device to the second electronic device via a local network that is different from the IMS network.
摘要:
A multimedia device engaged in wireless transmission of content to a remote display may format graphical user interface content for the remote display. The device may also communicate with a human interface device such as a remote control. The remote control may send control information to the multimedia device to control the remote display.
摘要:
In one example, a method includes receiving a plurality of input signals at a multiplexer of a white space device, and generating, via the multiplexer, a multiplexed output signal that includes at least two of the plurality of input signals. The method also includes sensing whether a white space frequency is available for unlicensed use, and communicating the multiplexed output signal over the white space frequency via a transmitter of the white space device when the white space frequency is available for unlicensed use.