1108 results about "Side information" patented technology

The apparatus for constructing a multi-channel output signal using an input signal and parametric side information, the input signal including the first input channel and the second input channel derived from an original multi-channel signal, and the parametric side information describing interrelations between channels of the multi-channel original signal uses base channels for synthesizing first and second output channels on one side of an assumed listener position, which are different from each other. The base channels are different from each other because of a coherence measure. Coherence between the base channels (for example the left and the left surround reconstructed channel) is reduced by calculating a base channel for one of those channels by a combination of the input channels, the combination being determined by the coherence measure. Thus, a high subjective quality of the reconstruction can be obtained because of an approximated original front / back coherence.

In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel of the original channels, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information. Since the channel side information only occupy a low number of bits, and since the decoder does not use dematrixing, an efficient and high quality multi-channel extension for stereo players and enhanced multi-channel players is obtained.

The apparatus for constructing a multi-channel output signal using an input signal and parametric side information, the input signal including the first input channel and the second input channel derived from an original multi-channel signal, and the parametric side information describing interrelations between channels of the multi-channel original signal uses base channels for synthesizing first and second output channels on one side of an assumed listener position, which are different from each other. The base channels are different from each other because of a coherence measure. Coherence between the base channels (for example the left and the left surround reconstructed channel) is reduced by calculating a base channel for one of those channels by a combination of the input channels, the combination being determined by the coherence measure. Thus, a high subjective quality of the reconstruction can be obtained because of an approximated original front / back coherence.

A method processes a multiview videos of a scene, in which each video is acquired by a corresponding camera arranged at a particular pose, and in which a view of each camera overlaps with the view of at least one other camera. Side information for synthesizing a particular view of the multiview video is obtained in either an encoder or decoder. A synthesized multiview video is synthesized from the of multiview videos and the side information. A reference picture list is maintained for each current frame of each of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list.

A intelligent backhaul radio have an advanced antenna system for use in PTP or PMP topologies. The antenna system provides a significant diversity benefit. Antenna configurations are disclosed that provide for increased transmitter to receiver isolation, adaptive polarization and MIMO transmission equalization. Adaptive optimization of transmission parameters based upon side information provided in the form of metric feedback from a far end receiver utilizing the antenna system is also disclosed.

A method for coding or decoding an audio signal combines the advantages of TNS processing and noise substitution. A time-discrete audio signal is initially transformed to the frequency domain in order to obtain spectral values of the temporal audio signal. Subsequently, a prediction of the spectral values in relation to frequency is carried out in order to obtain spectral residual values. Within the spectral residual values, areas are detected encompassing spectral residual values with noise properties. The spectral residual values in the noise areas are noise-substituted, whereupon information concerning the noise areas and noise substitution is incorporated into side information pertaining to a coded audio signal. Thus, considerable bit savings in case of transient signals can be achieved.

Method and apparatus for improving a user's ability to spell words correctly are provided. The method comprises: displaying a word list for user selection of a correctly spelled word; and displaying assistance information associated with the correctly spelled word. In one embodiment, the assistance information is selected from: one or more root words, one or more related words, and one or more memorization clues. The apparatus may comprise a signal bearing medium containing instructions of a computer program which, when executed by one or more processors, performs the method of the invention. Another embodiment of the apparatus comprises a computer system comprising one or more processors and memory configured to execute a computer program which, when executed, performs the method of the invention.

A method processes a multiview videos of a scene, in which each video is acquired by a corresponding camera arranged at a particular pose, and in which a view of each camera overlaps with the view of at least one other camera. Side information for synthesizing a particular view of the multiview video is obtained in either an encoder or decoder. A synthesized multiview video is synthesized from the multiview videos and the side information. A reference picture list is maintained for each current frame of each of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture.

In a closed-loop wireless communication system (200), channel-side information—such as CQI information, rank adaptation information or MIMO codebook selection information—is randomly or autonomously fed back to the transmitter (202) by having the receiver (206.i) initiate the feedback instead of using a scheduled feedback approach so that all receiving devices do not simultaneously feed back channel-side information to the transmitting device. The receiver (206.i) uses one or more antennas (209.i) to feed back channel-side information using data non-associated control multiplexing with uplink data and without uplink data, such as by using a contention-based physical channel or a synchronized random access channel.

Methods and systems for providing voice-mediated search capability to a mobile communications device involve receiving a signal from the mobile device that includes a representation of a spoken search request from a user of the mobile device, using speech recognition software to convert the search request into a text search request, extracting side information contained implicitly within the received signal, using the extracted side information to assign the user to a category, sending the text search request and the user category to content providers, receiving from the content providers content that is responsive to the text search request and the user category, and sending to the mobile device search results that are based on content from content providers. The methods and systems further involve sending searches and user categories to advertising providers, and sending advertisements returned by the advertising providers to the mobile device along with the search results.

A method of performing a surgical procedure on a patient is provided. The method typically comprises positioning a surgical work station of a robotically controlled surgical system and a patient on which a surgical procedure is to be performed in close proximity relative to each other, directing a field of view of an image capture device of the surgical work station at a surgical site on the patient, at which site the surgical procedure is to be performed, and introducing at least one robotically controlled surgical instrument on the surgical work station to the surgical site so that an end effector of the surgical instrument is within the field of view of the image capture device. The method typically further comprises displaying an image of the surgical site and the end effector on a display area of an image display at an operator control station of the surgical system. The image display is typically operatively connected to the image capture device so as to display, on the display area, the image of the surgical site and the end effector captured by the image capture device. The method can further include permitting an operator of the surgical system to manipulate a master control at the operator control station whilst viewing the image of the surgical site on the image display, the master control being operatively associated with the surgical instrument thereby to cause the end effector to move in response to manipulation of the master control so as to perform at least part of the surgical procedure on the patient at the surgical site. The method yet further typically comprises operatively linking the image display to a source of selectively accessible auxiliary information related to the surgical procedure to be performed, enabling the operator selectively to access the source of auxiliary information from the operator control station so as to forward the auxiliary information to the image display, causing the auxiliary information to be displayed across the display area of the image display in response to the operator selectively accessing the source of auxiliary information at the operator control station and enabling the operator selectively to move the auxiliary information when displayed on the image display relative to the image of the surgical site displayed on the image display. The master control is typically operatively linked with the source of auxiliary information, enabling the operator selectively to access the source of auxiliary information then including permitting the operator selectively to disassociate the master control from the surgical instrument and to use the master control to access the source of auxiliary information so as to enable the auxiliary information to be displayed on the display area of the image display.

In some embodiments, spatially realistic audio may be provided for a conference call. Voices from participants on the left side of a display, in a conference call, may be directed through audio on the left side of the display at the other conferencing system in the conference call (similarly for voices from the center and right side of the display). In some embodiments, two speakers may be used in the system to create synthesized stereo sound at a location specified by directional information received as side information along with the existing audio channel. The location may be determined by using beamforming with integrated microphones on a camera or speakerphone. In some embodiments, the audio signal and directional information may be sent in the form of a left audio channel and a right audio channel.

In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel of the original channels, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.

A prediction method, merged method, has been introduced in the enhancement layer of a multiple layer video coding. This merged method was designed to efficiently handle the prediction of the non moving parts in coding of the enhancement layer VOP or frame. All the information for this merged mode prediction is obtained from the base layer, and no additional side information is transmitted. This prediction mode when used together with combination of the existing forward mode, backward mode, and interpolated mode, can improve the coding efficiency for enhancement layer video coding, especially in low bit rate coding. The method can be used in most multiple layer video coding schemes, especially in spatial scalability video coding.

In a closed-loop wireless communication system (300), channel-side information—such as CQI information, rank adaptation information or MIMO codebook selection information—is fed back to the transmitter (310) in response to a start message (301) using a configurable or default time period or window by having the receiver (320) automatically terminate feedback upon expiration of the time period / window. The receiver (330) may continue or interrupt the feedback upon receipt of appropriate messaging (e.g., 306) from the transmitter (310).

An OFDM (Orthogonal Frequency Division Multiplexing) communication system that multiplexes data with a plurality of orthogonal sub-carrier frequencies, which includes a transmitter for converting a serial data stream into parallel data, and segmenting the parallel data into a plurality of blocks having a plurality of data blocks; inserting reference data having information representing a phase value and a position into which the reference symbol is inserted, into each of the segmented blocks; IFFT (Inverse Fast Fourier Transform)-transforming the respective blocks into time-based signals where sub-carrier frequencies are separately assigned to the data blocks; and determining phase factors of the IFFT-transformed time-based signals to reduce a peak-to-average power ratio (PAPR) where non-linear distortion occurs due to coincidence of phases of the data blocks IFFT-transformed with the sub-carrier frequencies, and phase-rotating the IFFT-transformed signals according to the determined phase factors before transmission.

Multiview videos are acquired by overlapping cameras. Side information is used to synthesize multiview videos. A reference picture list is maintained for current frames of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture. Alternatively, the depth images corresponding to the multiview videos of the input data, and this data are encoded as part of the bitstream depending on a SKIP type.

An information equipment remote operating system includes an operated-side information equipment and an operating-side information equipment. The operated-side information equipment includes a view region storing unit for storing view information regarding a view region correlated with an window, a screen information processing unit for generating an image to be displayed on an operating-side display unit as an initial state based on the view information, a communication unit, and a control information processing unit for operating an application. The operating-side information equipment includes a communication unit, a view region storing unit for storing the view information, a screen information processing unit for displaying images on multiple display regions in high to low display priority order, and a control information processing unit for transmitting application operating information to the operated-side information equipment.

Binaural rendering a multi-channel audio signal into a binaural output signal is described. The multi-channel audio signal has a stereo downmix signal into which a plurality of audio signals are downmixed, and side information having a downmix information, as well as object level information of the plurality of audio signals and inter-object cross correlation information. Based on a first rendering prescription, a preliminary binaural signal is computed from the first and second channels of the stereo downmix signal. A decorrelated signal is generated as an perceptual equivalent to a mono downmix of the first and second channels of the stereo downmix signal being, however, decorrelated to the mono downmix. Depending on a second rendering prescription, a corrective binaural signal is computed from the decorrelated signal and the preliminary binaural signal is mixed with the corrective binaural signal to obtain the binaural output signal.

Systems and methods are provided for performing transcoding in video communication system that use scalable video coding. The systems and methods can be used to transcode or convert input signals having certain characteristics into desired output signals having different characteristics requirements. The systems and methods are based on compressed domain processing, partial decoding-reencoding, or full decoding-reencoding with side information, depending on the specific characteristics of the input and desired output signals.

A method for generating a parametrically encoded audio signal, the method comprising: inputting a multi-channel audio signal comprising a plurality of audio channels; generating at least one combined signal of the plurality of audio channels; and generating one or more corresponding sets of side information including channel configuration information for controlling audio source locations in a synthesis of a binaural audio signal.

A method processes a multiview videos of a scene, in which each video is acquired by a corresponding camera arranged at a particular pose, and in which a view of each camera overlaps with the view of at least one other camera. Side information for synthesizing a particular view of the multiview video is obtained in either an encoder or decoder. A synthesized multiview video is synthesized from the multiview videos and the side information. A reference picture list is maintained for each current frame of each of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture.

According to various aspects of the present invention, a technique is described for improving load balancing of traffic in a data network using source-side related information embedded into the destination IP address field of packets received at a load balancing device. One aspect of the present invention relates to assigning more than one virtual IP address to a server cluster in order to enable different clients to select a virtual cluster address which corresponds to each clients' respective rights and / or profiles, and to use the selected virtual cluster address to access a desired site or service. Another aspect of the present invention relates to a mechanism which allows for load balancing operations to be implemented using source-side information which is embedded into the destination IP address of a packet header. In this way, load balancing decisions may be quickly performed at initial or early stages of a connection flow.

An audio decoder for decoding a multi-audio-object signal having an audio signal of a first type and an audio signal of a second type encoded therein is described, the multi-audio-object signal having a downmix signal and side information, the side information having level information of the audio signals of the first and second types in a first predetermined time / frequency resolution, and a residual signal specifying residual level values in a second predetermined time / frequency resolution, the audio decoder having a processor for computing prediction coefficients based on the level information; and an up-mixer for up-mixing the downmix signal based on the prediction coefficients and the residual signal to obtain a first up-mix audio signal approximating the audio signal of the first type and / or a second up-mix audio signal approximating the audio signal of the second type.

A method for decoding a multi-audio-object signal having audio signals of first and second types encoded therein, the multi-audio-object signal having a downmix signal and side information having level information of the audio signals of the first and second types in a first predetermined time / frequency resolution, the method including computing a prediction coefficient matrix C based on the level information; and up-mixing the downmix signal based on the prediction coefficients to obtain a first and / or a second up-mix audio signal approximating the audio signals of the first and second types, respectively, wherein up-mixing yields the first and / or second up-mix signals S1 and S2 from the downmix signal d according to a computation representable by(S1S2)=D-1{(1C)d+H},with “1” denoting—depending on the number of channels of d—a scalar, or an identity matrix, and D−1 being a matrix uniquely determined by a downmix prescription according to which the audio signals of the first and second types are downmixed into the downmix signal, and which is also included by the side information, and H being a term independent from d.

A method for synthesizing a binaural audio signal, the method comprising: inputting a parametrically encoded audio signal comprising at least one combined signal of a plurality of audio channels and one or more corresponding sets of side information describing a multi-channel sound image; and applying a predetermined set of head-related transfer function filters to the at least one combined signal in proportion determined by the corresponding set of side information to synthesize a binaural audio signal. A corresponding parametric audio decoder, parametric audio encoder, computer program product, and apparatus for synthesizing a binaural audio signal are also described.

Embodiments of a system and methodology are disclosed for aperiodic (i.e., non-periodic) feedback of channel-side information, such as channel rank information, to a base station by having the receiver / UE initiate the feedback instead of using a scheduled feedback approach. The autonomous feedback of channel-side information may use one of several different types of physical channel structures for uplink scheduling requests, such as those being discussed for inclusion in the emerging LTE platform standard.

A method of blockchain information encryption based on a complete homomorphic encryption method comprises: performing complete homomorphic encryption of a plaintext to be encrypted through an information encryption side and then performing signature; publishing a verification request to all the nodes in a network in public through adoption of an encrypted plaintext; respectively employing blockchain public keys by all the nodes to perform blockchain verification of the signature and an information receiving side, and employing complete homomorphic public keys to perform homomorphic encryptionoperation verification of the ciphertext; and after the verification passes, packing the information encryption side information, the information receiving side information and the ciphertext to generate an updated blockchain, performing broadcast of the network, and completing updating operation of the blockchain. The method provided by the invention greatly improve data safety and privacy of theblockchain technology, is more concise in the whole structure and effective, does not need to introduce a trusted third party and greatly extend and improve an original blockchain technology model, and only needs the smallest improvement to reach a secrecy effect.