Patent application number | Description | Published |
20080285559 | Method, Device And System For Implementing Multicast Connection Admission Control - Implementing multicast connection admission control is provided, and includes: calculating a currently remaining multicast support capability of a network-side functional unit upon receiving a program request initiated from a user; and admitting an access of the user when a support capability required for a program as requested by the user is below or equal to the currently remaining multicast support capability of the network-side functional unit. | 11-20-2008 |
20080288959 | MESSAGE SENDING METHOD, MESSAGE SENDING DEVICE AND MESSAGE TRANSMISSION SYSTEM - A message sending method is disclosed includes: receiving a message containing a plurality of requested programs, the plurality of requested programs being provided by a plurality of content service systems; separating the received message containing the plurality of requested programs into a plurality of sub-messages; and sending the separated plurality of sub-messages to corresponding ones of the plurality of content service systems. The invention also relates to a message sending device and a message transmission system. | 11-20-2008 |
20100275068 | Method, device and system for managing resources in networks - A method, device and system for managing resources in networks are provided, which relate to the field of data communication. The method includes the following steps. A resource manager (RM) sends a first request message according to a received resource request message, to request an access node (AN) to perform admission control. After receiving an admission control result indicating whether a resource requested by the resource request message is admitted, the RM sends a response message of the resource request message. Therefore, when multicast/unicast connection admission control (CAC) that supports shared bandwidth is realized, flow fusions of user line configuration between the AN and a broadband remote access system (BRAS, and policy distribution between a resource and admission control subsystem (RACS) and the BRAS are guaranteed; and sharing of bandwidth resources is realized to avoid waste of the bandwidth resources. | 10-28-2010 |
20110058550 | METHOD, APPARATUS AND SYSTEM FOR ALLOCATING IPTV RESOURCES - The present invention relates to the field of communications technologies, and discloses a method, an apparatus, and a system for allocating Internet Protocol Television (IPTV) resources to save bandwidth resources in the IPTV service. The method includes the following: a multicast access control entity allocates resources to a unicast access control entity through an intermediate network entity when unicast resources are not enough; and the unicast access control entity allocates resources to the multicast access control entity through the intermediate network entity when multicast resources are not enough. The present invention is primarily applicable to IPTV technologies. | 03-10-2011 |
Patent application number | Description | Published |
20090110006 | METHOD, APPARATUS AND SYSTEM FOR SENDING AND RECEIVING NOTIFICATION MESSAGES - A method, apparatus, and system for sending and receiving notification messages to synchronize notification messages with program streams accurately. The method for sending notification messages includes obtaining a notification message and a synchronization timestamp that are synchronous with a program, encapsulating the notification message into an RTP/RTCP packet corresponding to the synchronization timestamp, and sending the RTP/RTCP packet to a terminal. The method for decapsulating notification messages includes receiving an RTP/RTCP packet that carries a notification message and decapsulating the RTP/RTCP packet to obtain the notification message. Embodiments of the present disclosure synchronize a notification message with a program stream accurately by carrying the notification message in an RTP/RTCP packet. | 04-30-2009 |
20090113019 | METHOD AND APPARATUS FOR TRANSPORTING/RECEIVING NOTIFICATION MESSAGES VIA FILE DELIVERY OVER UNIDIRECTIONAL PROTOCOL - A method for transporting/receiving notification messages via File Delivery over Unidirectional Transport (FLUTE) includes: At the transmitting end, a server carries a notification content in a transport object and carries notification related information and a transport object identifier (TOI) of the transport object carrying the notification content in a first file description table (FDT), and then sends the first FDT and the transport object carrying the notification content in a FLUTE session; the receiving end obtains the notification related information and the TOI of the transport object carrying the notification content from the first FDT, and receives the transport object carrying the notification content according to the obtained related information and the TOI. A server for transporting notification messages via FLUTE, a FLUTE server, a content server and a terminal are also disclosed. With the present invention, the notification transport procedure is simpler and the reliability of notification transport is better. | 04-30-2009 |
20090132687 | METHOD, DEVICE AND SYSTEM FOR TRANSMITTING INITIALIZATION DATA FILE OF NOTIFICATION SERVICE - A method, a device, and a system for transmitting initialization data file of a notification service are provided. The method includes steps of encapsulating at least one initialization data file of a notification service in an initialization container; carrying an ID of the initialization container in a service acquisition fragment of an electronic service guide (ESG); and sending the ESG and the initialization container, and providing at least one data type for each initialization data file. The device is a communication device. The system is a communication system. Meanwhile, a method for initializing a notification application is also provided. Therefore, the initialization manner of a notification service is expanded, thereby realizing the distribution and acquisition of configuration files required by the notification service. | 05-21-2009 |
20100146561 | METHOD, TERMINAL AND SERVER FOR FINDING VISITED SERVICE PROVIDER - A method for finding a visited Service Provider (SP) disclosed herein includes: after accessing a network, a terminal obtains current network information; and obtains the visited SP information through the home SP information preset on the terminal and the current network information. A method for finding a visited SP disclosed herein includes: after receiving a visited SP information request sent by a terminal, an SP server searches for the current network information, obtains the visited SP information, and sends the visited SP information to the terminal. Accordingly, a terminal for finding a visited SP and an SP server are disclosed. Through the present invention, a roaming terminal may find the visited SP conveniently. | 06-10-2010 |
20120011549 | Method, Terminal and Server for Finding Visited Service Provider - A method for finding a visited Service Provider (SP) disclosed herein includes: after accessing a network, a terminal obtains current network information; and obtains the visited SP information through the home SP information preset on the terminal and the current network information. A method for finding a visited SP disclosed herein includes: after receiving a visited SP information request sent by a terminal, an SP server searches for the current network information, obtains the visited SP information, and sends the visited SP information to the terminal. Accordingly, a terminal for finding a visited SP and an SP server are disclosed. Through the present invention, a roaming terminal may find the visited SP conveniently. | 01-12-2012 |
20120066350 | PROGRAM RECOMMENDATION METHOD, TERMINAL DEVICE, AND NETWORK SYSTEM - Example embodiments provide a program recommendation mechanism that allows a user to recommend select portions of a media stream. For instance, one embodiment allows a terminal of a recommendation receiver to receive a recommendation message sent by a terminal of a recommendation originator, wherein the recommendation message includes a program identity (ID), an ID of a part of program stream recommended by the recommendation originator, or both. Further, an instruction message for instructing a media function (MF) server to deliver the part of program stream of the program is sent according to the program ID, the ID of the part of program stream, or both. Thereafter, the part of program stream delivered by the MF is received and played. | 03-15-2012 |
20130212231 | METHOD, APPARATUS AND SYSTEM FOR DYNAMIC MEDIA CONTENT INSERTION BASED ON HTTP STREAMING - Embodiments of the present invention disclose a method, an apparatus, and a system for dynamic media content insertion based on HTTP streaming, relating to the field of video technologies, and capable of implementing dynamic insertion of a customized media content. The dynamic media content is transmitted through HTTP streaming. The method includes: receiving, by a server, a request message that is sent by a client terminal and carries user information; screening out a target media content from locally stored media contents according to the user information; and sending the target media content to the client terminal so that the client terminal can play the target media content. Embodiments of the present invention are mainly applied to the process of dynamic media content insertion. When the client terminal watches a program through HTTP streaming, the customized insertion of the media content can be implemented. | 08-15-2013 |
20140032777 | METHOD, APPARATUS, AND SYSTEM FOR TRANSMITTING AND PROCESSING MEDIA CONTENT - A method, an apparatus, and a system are disclosed for transmitting and processing media content. The method includes: encapsulating at least one media sample and metadata thereof to generate a sub-media segment, where a plurality of the sub-media segments constitute one media segment; and each time one sub-media segment is generated, pushing the sub-media segment to a live streaming server such that the live streaming server, upon receiving the sub-media segment, pushes the sub-media segment to a client side for playing. The solutions according to embodiments of the present disclosure reduce the end-to-end delay and improve real-time performance of the media content processing. | 01-30-2014 |
Patent application number | Description | Published |
20130162532 | METHOD AND SYSTEM FOR GESTURE-BASED HUMAN-MACHINE INTERACTION AND COMPUTER-READABLE MEDIUM THEREOF - A method and system for gesture-based human-machine interaction and computer-readable medium are provided. The system includes a capturing module, a positioning module, and a transforming module. The method includes the steps of: capturing images from a user's video streams, positioning coordinates of three or more predetermined color blocks in the foreground, simulating movements of a mouse according to the coordinates of the first color block, and simulating click actions of the mouse according to the coordinates of the other color blocks. The embodiments according to the current disclosure position coordinates of a plurality of color blocks through processing the captured user's video streams, and simulate mouse actions according to the coordinates of the color blocks. Processing apparatuses like computers may be extended to facilitate gesture-based human-machine interactions through a very simple way, and a touch-sensitive interaction effect can be simulated, without the presence of a touch screen. | 06-27-2013 |
20140214401 | METHOD AND DEVICE FOR ERROR CORRECTION MODEL TRAINING AND TEXT ERROR CORRECTION - A computer-implemented method is performed at a device having one or more processors and memory storing programs executed by the one or more processors. The method comprises: selecting a target word in a target sentence; from the target sentence, acquiring a first sequence of words that precede the target word and a second sequence of words that succeed the target word; from a sentence database, searching and acquiring a group of words, each of which separates the first sequence of words from the second sequence of words in a sentence; creating a candidate sentence for each of the candidate words by replacing the target word in the target sentence with each of the candidate words; determining the fittest sentence among the candidate sentences according to a linguistic model; and suggesting the candidate word within the fittest sentence as a correction. | 07-31-2014 |
20140214406 | METHOD AND SYSTEM OF ADDING PUNCTUATION AND ESTABLISHING LANGUAGE MODEL - A method of processing information content based on a language model is performed at a computer, the method including the following steps: identifying a plurality of expressions in the information content that is queued to be processed; dividing the plurality of expressions into a plurality of characteristic units according to semantic features and predetermined characteristics associated with each of the plurality of characteristic units, each characteristic unit including a subset of the plurality of expressions and the predetermined characteristics at least including a respective integer number of expressions that are included in the characteristic unit; extracting, from the language model, a plurality of probabilities for a plurality of punctuation marks associated with each of the plurality of characteristic units; and in accordance with the extracted probabilities, associating a respective punctuation mark with each of the plurality of characteristic units included in the information content. | 07-31-2014 |
20140214416 | METHOD AND SYSTEM FOR RECOGNIZING SPEECH COMMANDS - A method of recognizing speech commands includes generating a background acoustic model for a sound using a first sound sample, the background acoustic model characterized by a first precision metric. A foreground acoustic model is generated for the sound using a second sound sample, the foreground acoustic model characterized by a second precision metric. A third sound sample is received and decoded by assigning a weight to the third sound sample corresponding to a probability that the sound sample originated in a foreground using the foreground acoustic model and the background acoustic model. The method further includes determining if the weight meets predefined criteria for assigning the third sound sample to the foreground and, when the weight meets the predefined criteria, interpreting the third sound sample as a portion of a speech command. Otherwise, recognition of the third sound sample as a portion of a speech command is forgone. | 07-31-2014 |
20140214417 | METHOD AND DEVICE FOR VOICEPRINT RECOGNITION - A method and device for voiceprint recognition, include: establishing a first-level Deep Neural Network (DNN) model based on unlabeled speech data, the unlabeled speech data containing no speaker labels and the first-level DNN model specifying a plurality of basic voiceprint features for the unlabeled speech data; obtaining a plurality of high-level voiceprint features by tuning the first-level DNN model based on labeled speech data, the labeled speech data containing speech samples with respective speaker labels, and the tuning producing a second-level DNN model specifying the plurality of high-level voiceprint features; based on the second-level DNN model, registering a respective high-level voiceprint feature sequence for a user based on a registration speech sample received from the user; and performing speaker verification for the user based on the respective high-level voiceprint feature sequence registered for the user. | 07-31-2014 |
20140214419 | METHOD AND SYSTEM FOR AUTOMATIC SPEECH RECOGNITION - An automatic speech recognition method includes at a computer having one or more processors and memory for storing one or more programs to be executed by the processors, obtaining a plurality of speech corpus categories through classifying and calculating raw speech corpus; obtaining a plurality of classified language models that respectively correspond to the plurality of speech corpus categories through a language model training applied on each speech corpus category; obtaining an interpolation language model through implementing a weighted interpolation on each classified language model and merging the interpolated plurality of classified language models; constructing a decoding resource in accordance with an acoustic model and the interpolation language model; and decoding input speech using the decoding resource, and outputting a character string with a highest probability as a recognition result of the input speech. | 07-31-2014 |
20140222417 | METHOD AND DEVICE FOR ACOUSTIC LANGUAGE MODEL TRAINING - A method and a device for training an acoustic language model, include: conducting word segmentation for training samples in a training corpus using an initial language model containing no word class labels, to obtain initial word segmentation data containing no word class labels; performing word class replacement for the initial word segmentation data containing no word class labels, to obtain first word segmentation data containing word class labels; using the first word segmentation data containing word class labels to train a first language model containing word class labels; using the first language model containing word class labels to conduct word segmentation for the training samples in the training corpus, to obtain second word segmentation data containing word class labels; and in accordance with the second word segmentation data meeting one or more predetermined criteria, using the second word segmentation data containing word class labels to train the acoustic language model. | 08-07-2014 |
20140236591 | METHOD AND SYSTEM FOR AUTOMATIC SPEECH RECOGNITION - A method of recognizing speech is provided that includes generating a decoding network that includes a primary sub-network and a classification sub-network. The primary sub-network includes a classification node corresponding to the classification sub-network. The classification sub-network corresponds to a group of uncommon words. A speech input is received and decoded by instantiating a token in the primary sub-network and passing the token through the primary network. When the token reaches the classification node, the method includes transferring the token to the classification sub-network and passing the token through the classification sub-network. When the token reaches an accept node of the classification sub-network, the method includes returning a result of the token passing through the classification sub-network to the primary sub-network. The result includes one or more words in the group of uncommon words. A string corresponding to the speech input is output that includes the one or more words. | 08-21-2014 |
20140236600 | METHOD AND DEVICE FOR KEYWORD DETECTION - An electronic device with one or more processors and memory trains an acoustic model with an international phonetic alphabet (IPA) phoneme mapping collection and audio samples in different languages, where the acoustic model includes: a foreground model; and a background model. The device generates a phone decoder based on the trained acoustic model. The device collects keyword audio samples, decodes the keyword audio samples with the phone decoder to generate phoneme sequence candidates, and selects a keyword phoneme sequence from the phoneme sequence candidates. After obtaining the keyword phoneme sequence, the device detects one or more keywords in an input audio signal with the trained acoustic model, including: matching phonemic keyword portions of the input audio signal with phonemes in the keyword phoneme sequence with the foreground model; and filtering out phonemic non-keyword portions of the input audio signal with the background model. | 08-21-2014 |
20140237576 | USER AUTHENTICATION METHOD AND APPARATUS BASED ON AUDIO AND VIDEO DATA - A computer-implemented method is performed at a server having one or more processors and memory storing programs executed by the one or more processors for authenticating a user from video and audio data. The method includes: receiving a login request from a mobile device, the login request including video data and audio data; extracting a group of facial features from the video data; extracting a group of audio features from the audio data and recognizing a sequence of words in the audio data; identifying a first user account whose respective facial features match the group of facial features and a second user account whose respective audio features match the group of audio features. If the first user account is the same as the second user account, retrieve the sequence of words associated with the user account and compare the sequences of words for authentication purpose. | 08-21-2014 |
20140350918 | METHOD AND SYSTEM FOR ADDING PUNCTUATION TO VOICE FILES - A method and system for adding punctuation to a voice file is disclosed. The method includes: utilizing silence or pause duration detection to divide a voice file into a plurality of speech segments for processing, the voice file includes a plurality of features units; identifying all features units that appear in the voice file according to every term or expression and semantics features of the every term or expression that form each of the plurality of speech segments; using a linguistic model to determine a sum of weight of various punctuation modes in the voice file according to all the feature units, the linguistic model is built upon semantics features of various parsed out terms or expressions from a body text of a spoken sentence according to a language library; and adding punctuations to the voice file based on the determined sum of weight of the various punctuation modes. | 11-27-2014 |
20140350934 | Systems and Methods for Voice Identification - Systems and methods are provided for voice identification. For example, audio characteristics are extracted from acquired voice signals; a syllable confusion network is identified based on at least information associated with the audio characteristics; a word lattice is generated based on at least information associated with the syllable confusion network and a predetermined phonetic dictionary; and an optimal character sequence is calculated in the word lattice as an identification result. | 11-27-2014 |
20140350939 | Systems and Methods for Adding Punctuations - Systems and methods are provided for adding punctuations. For example, one or more first feature units are identified in a voice file taken as a whole; the voice file is divided into multiple segments: one or more second feature units are identified in the voice file; a first aggregate weight of first punctuation states of the voice file and a second aggregate weight of second punctuation states of the voice file are determined, using a language model established based on word separation and third semantic features; a weighted calculation is performed to generate a third aggregate weight based on at least information associated with the first aggregate weight and the second aggregate weight; and one or more final punctuations are added to the voice file based on at least information associated with the third aggregate weight. | 11-27-2014 |
20140358539 | METHOD AND APPARATUS FOR BUILDING A LANGUAGE MODEL - A method includes: acquiring data samples; performing categorized sentence mining in the acquired data samples to obtain categorized training samples for multiple categories; building a text classifier based on the categorized training samples; classifying the data samples using the text classifier to obtain a class vocabulary and a corpus for each category; mining the corpus for each category according to the class vocabulary for the category to obtain a respective set of high-frequency language templates; training on the templates for each category to obtain a template-based language model for the category; training on the corpus for each category to obtain a class-based language model for the category; training on the class vocabulary for each category to obtain a lexicon-based language model for the category; building a speech decoder according to an acoustic model, the class-based language model and the lexicon-based language model for any given field, and the data samples. | 12-04-2014 |
20140379354 | METHOD, APPARATUS AND SYSTEM FOR PAYMENT VALIDATION - A method, apparatus and system for payment validation have been disclosed. The method includes: receiving a payment validation request from a terminal, wherein the payment validation request includes identification information and a current voice signal; detecting whether the identification information is identical to a pre-stored identification information; if identical: extracting voice characteristics associated with an identity information and a text password from the current voice signal; matching the current voice characteristics to a pre-stored speaker model; if successfully matched: sending an validation reply message to the terminal to indicate that payment request has been authorized. The validation reply message is utilized by the terminal to proceed with a payment transaction. The identity information identifies an owner's current voice signal, and the text password is indicated by the current voice signal. The method eliminates the requirement of the server sending a SMS message with a validation code to the terminal. | 12-25-2014 |
20150019214 | METHOD AND DEVICE FOR PARALLEL PROCESSING IN MODEL TRAINING - A method and a device for training a DNN model includes: at a device including one or more processors and memory: establishing an initial DNN model; dividing a training data corpus into a plurality of disjoint data subsets; for each of the plurality of disjoint data subsets, providing the data subset to a respective training processing unit of a plurality of training processing units operating in parallel, wherein the respective training processing unit applies a Stochastic Gradient Descent (SGD) process to update the initial DNN model to generate a respective DNN sub-model based on the data subset; and merging the respective DNN sub-models generated by the plurality of training processing units to obtain an intermediate DNN model, wherein the intermediate DNN model is established as either the initial DNN model for a next training iteration or a final DNN model in accordance with a preset convergence condition. | 01-15-2015 |
20150095032 | Keyword Detection For Speech Recognition - This application discloses a method implemented of recognizing a keyword in a speech that includes a sequence of audio frames further including a current frame and a subsequent frame. A candidate keyword is determined for the current frame using a decoding network that includes keywords and filler words of multiple languages, and used to determine a confidence score for the audio frame sequence. A word option is also determined for the subsequent frame based on the decoding network, and when the candidate keyword and the word option are associated with two distinct types of languages, the confidence score of the audio frame sequence is updated at least based on a penalty factor associated with the two distinct types of languages. The audio frame sequence is then determined to include both the candidate keyword and the word option by evaluating the updated confidence score according to a keyword determination criterion. | 04-02-2015 |
20150154955 | Method and Apparatus For Performing Speech Keyword Retrieval - A method and an apparatus are provided for retrieving keyword. The apparatus configures at least two types of language models in a model file, where each type of language model includes a recognition model and a corresponding decoding model; the apparatus extracts a speech feature from the to-be-processed speech data; performs language matching on the extracted speech feature by using recognition models in the model file one by one, and determines a recognition model based on a language matching rate; and determines a decoding model corresponding to the recognition model; decoding the extracted speech feature by using the determined decoding model, and obtains a word recognition result after the decoding; and matches a keyword in a keyword dictionary and the word recognition result, and outputs a matched keyword. | 06-04-2015 |
Patent application number | Description | Published |
20120299788 | Antenna based on a metamaterial and method for generating an operating wavelength of a metamaterial panel - The present invention relates to an antenna based on a metamaterial and a method for generating an operating wavelength of a metamaterial panel. The antenna comprises a radiation source, and a metamaterial panel capable of converging an electromagnetic wave and operating at a first wavelength. The metamaterial panel is adapted to convert the electromagnetic wave radiated from the radiation source into a plane wave and to enable the antenna to simultaneously operate at a second wavelength and a third wavelength which are smaller than the first wavelength and are different multiples of the first wavelength. The present invention further provides a method for generating an operating wavelength of a metamaterial panel for use in the aforesaid antenna. These improve the convergence performance and reduce the volume and size of the antenna. | 11-29-2012 |
20120307361 | Polarization converter made of meta material - A polarization converter made of metamaterial, including a base material and a number of artificial microstructures disposed on the base material. The artificial microstructures can influence the electric field vector of plane electromagnetic wave propagating in it. The electric field vector of the electromagnetic wave can be decomposed into two non-zero orthogonal components on one or more planes perpendicular to the incident direction of the electromagnetic wave, the orthogonal components can be parallel and perpendicular to the optical axis at the position where the artificial microstructure located. After the electromagnetic wave passing through the polarization converter made of metamaterial, the two orthogonal components have a phase difference Δθ different from before incidence, thereby achieving mutual conversion between the above electromagnetic wave polarization methods. The polarization converter made of metamaterial of the present invention is simple in structure, and can easily realize polarization conversion of electromagnetic waves. | 12-06-2012 |
20120326800 | Impedance Matching Component and Hybrid Wave-Absorbing Material - Embodiments of the present disclosure relate to an impedance matching component and a hybrid wave-absorbing material. The impedance matching component is disposed between a first medium and a second medium, and comprises a plurality of functional sheet layers. Impedances of the functional sheet layers vary continuously in a stacking direction of the functional sheet layers, with the impedance of a first one of the functional sheet layers being identical to that of the first medium and the impedance of a last one of the functional sheet layers being identical to that of the second medium. | 12-27-2012 |
20130002499 | Man-made composite material and man-made composite material antenna - The present invention relates to a man-made composite material and a man-made composite material antenna. The man-made composite material is disposed in a propagation direction of a plane electromagnetic wave and convert it into a spherical wave. Reverse extensions of the spherical wave intersect at a virtual focus. A line connecting the virtual focus to a point on the second surface of the man-made composite material and a line perpendicular to the man-made composite material form an angle θ therebetween, which uniquely corresponds to a curved surface in the man-made composite material. A set formed by points having the same angle θ forms a boundary of the curved surface to which the angle θ uniquely corresponds. Each point on the curved surface to which the angle θ uniquely corresponds has a same refractive index. Refractive indices of the man-made composite material increase gradually as the angle θ increases. | 01-03-2013 |
20130002500 | Metamaterial and metamaterial antenna - The present invention relates to a metamaterial and a metamaterial antenna. The metamaterial is disposed in a propagation direction of the electromagnetic waves emitted from a radiation source. A line connecting the radiation source to a point on a first surface of the metamaterial and a line perpendicular to the metamaterial form an angle θ therebetween, which uniquely corresponds to a curved surface in the metamaterial. Each point on the curved surface to which the angle θ uniquely corresponds has a same refractive index. Refractive indices of the metamaterial decrease gradually as the angle θ increases. The electromagnetic waves propagating through the metamaterial exits in parallel from a second surface of the metamaterial. The refraction, diffraction and reflection at the abrupt transition points can be significantly reduced in the present disclosure and the problems caused by interferences are eased, which further improves performances of the metamaterial and the metamaterial antenna. | 01-03-2013 |
20130002509 | Impedance matching component, metamaterial panel, converging component and antenna - An impedance matching component is disclosed. The impedance matching component is disposed on and closely attached to a first side surface of a function dielectric sheet. The impedance matching component comprises a first plurality of impedance matching layers, each of which has a refractive index distribution represented as follows: | 01-03-2013 |
20130027278 | Man-made composite material and man-made composite material antenna - The present invention relates to a man-made composite material. The man-made composite material is divided into a plurality of regions. A plane electromagnetic wave is incident on a first surface and exits in the form of a spherical wave from a second surface of the man-made composite material opposite to the first surface. Reverse extensions of the exiting electromagnetic wave intersect with each other at a virtual focus of the man-made composite material. A line connecting the virtual focus to a point on the top surface of the i | 01-31-2013 |
20130027782 | Man-made composite material and man-made composite material antenna - The present invention relates to a man-made composite material and a man-made composite material antenna. The man-made composite material is divided into a plurality of regions. An electromagnetic wave is incident on a first surface exits from a second surface of the man-made composite material opposite to the first surface. A line connecting a radiation source to a point on the bottom surface of the i | 01-31-2013 |
20130050058 | METAMATERIAL FOR DIVERGING AN ELECTROMAGNETIC WAVE - The present disclosure relates to a metamaterial for diverging an electromagnetic wave, which comprises at least one metamaterial sheet layer. Refractive indices of the metamaterial sheet layer are distributed in a circular form with a center of the metamaterial sheet layer, and the refractive indices remain unchanged at a same radius and increase gradually with the radius. The present disclosure changes electromagnetic parameters at each point of the metamaterial through punching or by attaching man-made microstructures so that the electromagnetic wave can be diverged after passing through the metamaterial. The metamaterial of the present disclosure features a simple manufacturing process and a low cost, and is easy to be implemented. Moreover, the metamaterial of the present disclosure has small dimensions and does not occupy a large space, so it is easy to miniaturize apparatuses made of the metamaterial of the present disclosure. | 02-28-2013 |
20130098673 | Metamaterial for deflecting an electromagnetic wave - A metamaterial for deflecting an electromagnetic wave is disclosed, which comprises a functional layer. The functional layer comprises a plurality of sheet layers parallel to each other, and each of the sheet layers comprises a sheet-like substrate and a plurality of man-made microstructures arranged in an array on the sheet-like substrate. The sheet-like substrate comprises a plurality of unit blocks, and each of the man-made microstructures and a corresponding one of the unit blocks occupied thereby form a unit cell. Refractive indices of the unit cells arranged in a first direction in each of the sheet layers decrease gradually. Each of the unit cells has an anisotropic electromagnetic parameter. Through use of the metamaterial of the present disclosure, deflection of the electromagnetic wave can be achieved. | 04-25-2013 |
20140292615 | METAMATERIAL ANTENNA - The disclosure relates to a metamaterial antenna, where the metamaterial antenna includes an enclosure, a feed, a first metamaterial that clings to an aperture edge of the feed, a second metamaterial that is separated by a preset distance from the first metamaterial and is set oppositely, and a third metamaterial that clings to an edge of the second metamaterial, where the enclosure, the feed, the first metamaterial, the second metamaterial, and the third metamaterial make up a closed cavity; and a central axis of the feed penetrates center points of the first metamaterial and the second metamaterial; and a reflection layer for reflecting an electromagnetic wave is set on surfaces of the first metamaterial and the second metamaterial, where the surfaces are located outside the cavity. | 10-02-2014 |
20140320360 | OFFSET FEED SATELLITE TELEVISION ANTENNA AND SATELLITE TELEVISION RECEIVER SYSTEM THEREOF - Disclosed is an offset feed satellite television antenna comprising a metamaterial panel ( | 10-30-2014 |
20140320361 | FRONT FEED MICROWAVE ANTENNA - A front feed microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, a second metamaterial panel, and a reflective panel affixed to the back of the first metamaterial panel. The electromagnetic wave is emitted via the first metamaterial panel, refracted by entering the second metamaterial panel, reflected by the reflective panel, and finally re-refracted by reentering the second metamaterial panel, then finally parallel-emitted. Employment of the principle of metamaterial for manufacturing the antenna allows the antenna to break away from restrictions of conventional concave lens shape, convex lens shape, and parabolic shape, thereby allowing the shape of the antenna to be panel-shaped or any shape as desired, while allowing for reduced thickness, reduced size, facilitated processing and manufacturing, reduced costs, and improved gain effect. | 10-30-2014 |
20150138029 | CASSEGRAIN-TYPE METAMATERIAL ANTENNA - A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector. | 05-21-2015 |
20150155635 | ANTENNA REFLECTOR PHASE CORRECTION FILM AND REFLECTOR ANTENNA - The disclosure relates to an antenna reflector phase correction film and a reflector antenna. The antenna reflector phase correction film includes a first substrate, a second substrate, and multiple artificial microstructures disposed between the first substrate and the second substrate, the artificial microstructures are wires made of electrically conductive materials, and an electromagnetic wave, emergent after being reflected by an antenna reflector attached with the antenna reflector phase correction film, has an equiphase surface. According to the disclosure, the antenna reflector phase correction film has specific refractive index distribution internally, so that a surface emergent phase of a reflector can be corrected after attaching onto a surface of a conventional reflector, a phase error caused due to installation or processing is improved, a complete flat emergent equiphase is obtained, and then a far-field performance (such as a higher gain) is improved. | 06-04-2015 |
Patent application number | Description | Published |
20090187400 | SYSTEM, METHOD AND MULTIPOINT CONTROL UNIT FOR PROVIDING MULTI-LANGUAGE CONFERENCE - A system for providing multi-language conference is provided. The system includes conference terminals and a multipoint control unit. The conference terminals are adapted to process a speech of a conference site, transmitting the processed speech to the multipoint control unit, process an audio data received from the multipoint control unit and output it. At least one of the conference terminals is an interpreting terminal adapted to interpret the speech of the conference according to the audio data transmitted from the multipoint control unit, process the interpreted audio data and output the processed audio data. The multipoint control unit is adapted to perform a sound mixing process of the audio data from the conference terminals in different sound channels according to language types, and then sends mixed audio data after the sound mixing process to the conference terminals. | 07-23-2009 |
20100039498 | CAPTION DISPLAY METHOD, VIDEO COMMUNICATION SYSTEM AND DEVICE - A caption display method in a video communication includes the following steps. A video communication is established. Speech signals of a speaker are recognized and converted to text signals. The text signals and picture video signals that need to be received by and displayed to other conference participators are superposed and encoded, and are sent through the video communication. A video communication system and device are also described. Users directly decode display pictures and character information corresponding to a speech. The method is simple, and a real-time performance is high. | 02-18-2010 |
20110261943 | Method, Device, and System for Processing Multi-Channel Audio Signals - A method for processing multi-channel audio signals includes receiving L channel audio signals from participating conference terminals, decoding the L channel audio signals, and determining N conference terminals whose audio signals are to be mixed from the participating conference terminals according to the data obtained through decoding; selecting an encoder as a common encoder from L−N encoders of the participating conference terminals except the N conference terminals whose audio signals are to be mixed, encoding decoded audio signals of the N conference terminals whose audio signals are to be mixed, and sending encoded data to conference terminals corresponding to the L−N encoders (indicating that the number of encoders is equal to the value of L minus N); and updating encoding status information of L−N−1 encoders except the common encoder to synchronize with encoding status information of the common encoder. | 10-27-2011 |
20110274293 | METHOD, DEVICE AND COMMUNICATION TERMINAL FOR ADJUSTING VOLUME ADAPTIVELY - The present invention relates to the field of communications technology, and more particularly, to a method, a device and a communication terminal for adjusting volume adaptively. The present invention discloses a method for adjusting volume adaptively, including: receiving an audio signal from a sound source; obtaining information about the sound source corresponding to the audio signal and input and output gain parameters corresponding to the information about the sound source; and adjusting input volume and output volume according to the input and output gain parameters. The present invention also discloses an adaptive volume adjusting device, comprising a receiving unit, an obtaining unit and an adjusting unit. In addition, the present invention discloses a communication terminal comprising the preceding device. The advantage of the present invention is to automatically adjust input volume and output volume so that the users can hear an ideal voice. | 11-10-2011 |
20130093837 | METHOD AND APPARATUS FOR PROCESSING AUDIO IN VIDEO COMMUNICATION - Embodiments of the present invention provide a method and an apparatus for processing audio in video communication. The method includes: acquiring audio data and audio source position information corresponding to the audio data in the video communication, and performing longitudinal-depth processing on the audio data according to the audio source position information. According to the embodiments of the present invention, the audio data and the audio source position information corresponding to the audio data in the video communication are acquired first, and then the longitudinal-depth processing is performed on the audio data according to the acquired audio source position information to make it be audio data that provides a longitudinal-depth feeling that matches the audio source position information, so that sounds generated by objects at different front/back positions can be distinguished in the video communication. | 04-18-2013 |