摘要:
The invention discloses a bi-directional prediction method for video coding/decoding. When bi-directional prediction coding at the coding end, firstly the given forward candidate motion vector of the current image block is obtained for every image block of the current B-frame; the backward candidate motion vector is obtained through calculation, and the candidate bi-directional prediction reference block is obtained through bi-directional prediction method; the match is computed within the given searching scope and/or the given matching threshold; finally the optimal matching block is selected to determine the final forward motion vector, and the backward motion vector and the block residual. The present invention achieves the object of bi-directional prediction by coding a single motion vector, furthermore, it will not enhance the complexity of searching for a matching block at the coding end, and may save amount of coding the motion vector and represent the motion of the objects in video more actually. The present invention realizes a new prediction coding type by combining the forward prediction coding with the backward.
摘要:
One illustrative method for use by a host server in pushing messages to a mobile communication device involves the steps of causing a message to be sent to a relay network for delivery to the mobile communication device through one of a plurality of wireless communication networks which are communicatively coupled to the relay network; receiving, from the relay network, a result message when the mobile communication device is unavailable to receive the message through the wireless communication network, the result message comprising a message identifier which uniquely corresponds to the message; maintaining storage of the message in memory accessible by the host server after the result message is received; receiving, from the relay network, a status message which indicates that the mobile communication device is available to receive the message when the mobile communication device is available to receive the message through the wireless communication device; and causing the message to be sent again to the relay network for delivery to the mobile communication device in response to receiving the status message. During the unavailability of the mobile device, the relay network refrains from maintaining storage of the message in memory of the relay network.
摘要:
A wireless telephony communications system includes at least one macro cell for communicating both voice and data with a mobile communications device across a first wireless link and at least one micro cell for communicating data with the mobile communications device across a second wireless communication link. Each micro cell communicates signaling information through the macro cell via a wireless link to a control element that manages the micro cells. Using a wireless link to communicate signaling between each micro cell and the control element in the UMTS system eliminates the need for a wired back haul link, thereby reducing access costs.
摘要:
In one embodiment, a scheme is provided for securing a personalized indicium assigned to a mobile communications device. Upon detecting at a network node that an address associated with the mobile communications device has changed, a challenge-and-response procedure is negotiated between the mobile communications device and the network node for authenticating the personalized indicium using a shared authentication key.
摘要:
An inspection system includes a source for emitting a light beam, a sensor for capturing images of a target area, and an optical system for splitting the light beam into a plurality of paths for illuminating the target area. The optical system arranged such that a 2D image and a 3D image of the target area have the same optical path length from the target area to the sensor.
摘要:
The disclosed embodiments relate to a method and apparatus for performing a pilot synchronization operation in a wireless communication system. The system may contain a plurality of sliding correlators that each receives a portion of a received correlation sequence and provides a partial correlation output. An absolute value block may take the absolute value of each partial correlation output. Circuitry may combine the absolute values of each of the partial correlation outputs to form a correlation output.
摘要:
A method and apparatus for improving performance in communication systems is provided. In one implementation, information is accessed indicating the quality of at least one communication channel. Based on the accessed information, a modulation scheme is indicated for sending data over the channel encoded with a rateless code. Various different information relating to the communication channel can be used to determine a quality metric for the channel.
摘要:
A method, a system, and a network device for obtaining cell reselection priority are disclosed. The method includes: The network obtains information for calculating priority; and the network determines a terminal-specific private priority list according to the information, and delivers the determined private priority list specific to the terminal through special signaling; or the terminal obtains all or part of the information for calculating priority from the network, and determines its private priority list according to the obtained information; or both the network and the terminal determine the terminal-specific private priority list according to the information.
摘要:
An apparatus comprising a processor configured to receive a video frame comprising a current block, wherein the current block comprises a plurality of original pixels, compute a plurality of reconstructed pixels based on the original pixels, and use an intra prediction mode to generate a set of prediction pixels based on a set of reconstructed pixels in the plurality of reconstructed pixels.
摘要:
A video processing apparatus with residue prediction includes a motion estimation/compensation unit to determine a matching block of a reference video frame, obtain a motion vector of a current block of a current video frame that is related to the matching block, and acquire neighboring reconstructed pixels adjacent to the current block and corresponding pixels adjacent to the matching block with the motion vector alignment. Additionally, a pseudo-residue generating unit is included and constructs pseudo residues according to the neighboring reconstructed pixels and the corresponding pixels, an arithmetic unit is included and generates first-order residues by subtracting the matching block from the current block, and a residue-predicting unit is included and derives second-order residues and corresponding information according to the pseudo residues and the first-order residues. Moreover, a post-processing unit is included and derives a reconstructed current block according to the second-order residues and its corresponding information.