NIPPON TELEGRAPH AND TELEPHONE CORP. Patent applications |
Patent application number | Title | Published |
20140230375 | METHOD FOR PACKING CABLE - Provided is a method for packing a cable having a static friction coefficient of 0.15 or more and 0.50 or less, a dynamic friction coefficient of 0.10 or more and 0.40 or less and a bending rigidity of 60 gf or more and 350 gf or less. The method includes the steps of: (1) winding the cable into a figure-of-eight shape to form a cylindrical cable bundle, (2) winding a wrapping film as a restraining member, which restrains the cable bundle, around an outer circumferential portion of the cable bundle, (3) winding a wrapping film as a closing member which closes openings on both ends of the cable bundle, and (4) housing the cable bundle being wound with the restraining member and the closing member in a housing container. | 08-21-2014 |
20120173234 | VOICE ACTIVITY DETECTION APPARATUS, VOICE ACTIVITY DETECTION METHOD, PROGRAM THEREOF, AND RECORDING MEDIUM - The processing efficiency and estimation accuracy of a voice activity detection apparatus are improved. An acoustic signal analyzer receives a digital acoustic signal containing a speech signal and a noise signal, generates a non-speech GMM and a speech GMM adapted to a noise environment, by using a silence GMM and a clean-speech GMM in each frame of the digital acoustic signal, and calculates the output probabilities of dominant Gaussian distributions of the GMMs. A speech state probability to non-speech state probability ratio calculator calculates a speech state probability to non-speech state probability ratio based on a state transition model of a speech state and a non-speech state, by using the output probabilities; and a voice activity detection unit judges, from the speech state probability to non-speech state probability ratio, whether the acoustic signal in the frame is in the speech state or in the non-speech state and outputs only the acoustic signal in the speech state. | 07-05-2012 |
20120114168 | ELECTRONIC WATERMARK EMBEDDING METHOD, DEVICE, AND PROGRAM, AND ELECTRONIC WATERMARK DETECTING METHOD, DEVICE, AND PROGRAM - A digital watermark embedding apparatus for embedding embedding information into an input signal having dimensions equal to or greater than N(N is an integer equal to or greater than 2). The apparatus generates an embedding sequence based on the embedding information, generates an N−1-dimensional pattern based on the embedding sequence, generates an N-dimensional embedding pattern by modulating a periodic signal according to a value on the N−1-dimensional pattern, and superimposes the embedding pattern in the input signal and outputs it. A digital watermark detection apparatus measures a component of a predetermined periodic signal in a direction of a dimension of the input signal to obtain an N−1-dimensional pattern, obtains a detection sequence from values of the N−1 dimensional pattern, and detects the embedded digital watermark based on a size of correlation value between the detection sequence and an embedding sequence. | 05-10-2012 |
20120084235 | STRUCTURED PREDICTION MODEL LEARNING APPARATUS, METHOD, PROGRAM, AND RECORDING MEDIUM - A structured prediction model learning apparatus, method, program, and recording medium maintain prediction performance with a smaller amount of memory. An auxiliary model is introduced by defining the auxiliary model parameter set θ | 04-05-2012 |
20120070032 | ELECTRONIC WATERMARK EMBEDDING METHOD, DEVICE, AND PROGRAM, AND ELECTRONIC WATERMARK DETECTING METHOD, DEVICE, AND PROGRAM - A digital watermark embedding apparatus for embedding embedding information, as digital watermark, into an input signal having dimensions equal to or greater than N (N is an integer equal to or greater than 2) and a digital watermark detection apparatus for detecting the digital watermark are disclosed. The digital watermark embedding apparatus generates an embedding sequence based on embedding information, generates a N−1-dimensional pattern based on the embedding sequence, generates N-dimensional embedding pattern by modulating a periodic signal according to a value on the N−1-dimensional pattern, and superimposing the embedding pattern in the input signal and outputs it. The digital watermark detection apparatus measures a component of a predetermined periodic signal in a direction of a dimension of the input signal to obtain a N−1-dimensional pattern, obtains a detection sequence from values of the N−1 dimensional pattern, and detects embedded digital watermark based on a size of correlation value between the detection sequence and an embedding sequence. | 03-22-2012 |
20120045056 | CRYPTOGRAPHIC PROCESSING SYSTEM - It is aimed to implement a hierarchical predicate encryption (HPE) scheme. A cryptographic process is performed using dual vector spaces (dual distortion vector spaces (DDVS)) of a space V and a space V* paired through a pairing operation. An encryption device generates as a cipher vector a vector in the space V, the vector having transmission information embedded therein. A decryption device, using a predetermined vector in the space V* as a key vector, performs the pairing operation on the cipher vector generated by the encryption device and the key vector, to decrypt the cipher vector and to extract information concerning the transmission information. | 02-23-2012 |
20120027210 | CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD, ENCRYPTION APPARATUS, KEY GENERATION APPARATUS, DECRYPTION APPARATUS, CONTENT SERVER, PROGRAM, AND STORAGE MEDIUM - A cryptographic communication technology that is based on predicate encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a predicate encryption algorithm and predicate conversion rule information prescribing a conversion rule for converting predicate designation information to predicate information used in the predicate encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first predicate information from input information. The first attribute information or the first predicate information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second predicate information obtained from user information by using the other kind of conversion rule information. | 02-02-2012 |
20120027206 | INFORMATION GENERATION APPARATUS,METHOD, PROGRAM, AND RECORDING MEDIUM THEREFOR - Hierarchical cryptography expressed in a general semiordered structure other than a tree structure is implemented. In information generation, random numbers σ | 02-02-2012 |
20120027201 | ENCRYPTION APPARATUS, DECRYPTION APPARATUS, ENCRYPTION METHOD, DECRYPTION METHOD, SECURITY METHOD, PROGRAM, AND RECORDING MEDIUM - Security against CCA is improved without providing space for just improving the security against CCA in a ciphertext space. In encryption processing, a first ciphertext C | 02-02-2012 |
20110274165 | PARAMETER SELECTION METHOD, PARAMETER SELECTION APPARATUS, PROGRAM, AND RECORDING MEDIUM - Provided that a first segment is an earliest time segment included in a discrete time segment, and a second segment is a time segment subsequent to the first segment, a positive second-segment parameter that corresponds to a weakly monotonically increasing function value of an average amplitude of prediction residuals in a time segment including the second segment is used as a parameter for variable length coding of prediction residuals in the second segment. In addition, a value that corresponds to a weakly monotonically increasing function value of the sum of the second-segment parameter and a positive additional value that corresponds to an index representing the prediction effectiveness of time-series signals in the time segment including the second segment is used as a parameter for variable length coding of the prediction residual at a certain discrete time in the first segment. | 11-10-2011 |
20110273443 | SYSTEM AND A METHOD FOR THREE-DIMENSIONAL MODELING OF A THREE-DIMENSIONAL SCENE FEATURES - A method and a system for three-dimensional modeling of a three-dimensional scene features, are described. According to the present invention, a reference-image is captured from a known angle while an array of two-dimensional random patterns is projected onto a reference surface from another known angle. The reference image is turned in relation to the reference surface. Then, an image of the scene is captured while the array of two-dimensional random patterns is projected onto it from the same angles. By matching the patterns of these images and measuring the movement between the two projected patterns, the third dimension is computed using triangulation techniques. | 11-10-2011 |
20110254713 | ENCODING METHOD AND DECODING METHOD, AND DEVICES, PROGRAM AND RECORDING MEDIUM FOR THE SAME - Information that includes first information identifying integer quotients obtained by divisions using prediction residuals or integers not smaller than 0 that increase monotonically with increases in the amplitude of the prediction residuals, as dividends, and a separation parameter decided for a time segment corresponding to the prediction residuals or a mapped integer value of the separation parameter, as a modulus, and second information identifying the remainders obtained when the dividends are divided by the modulus is generated as a code corresponding to the prediction residuals, and each piece of side information that includes the separation parameter is subjected to variable length coding. | 10-20-2011 |
20110185171 | CERTIFICATE AUTHENTICATING METHOD, CERTIFICATE ISSUING DEVICE, AND AUTHENTICATION DEVICE - A terminal device | 07-28-2011 |
20110122948 | VIDEO SIGNAL GENERATION APPARATUS, VIDEO SIGNAL GENERATION METHOD, VIDEO SIGNAL GENERATION PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM RECORDING THE PROGRAM - A video signal generation apparatus for decoding a bit stream to generate a video signal, includes: a writing unit configured to write a flag value indicating whether a decoding target block has been coded by intra-coding or inter-coding in a specified bit position on one bit plane having a size the same as that of the decoding target block, to write information indicating a coding division form of the decoding target block in a specified common area on the one bit plane, and to write the coding information in a specified switch interpretation area on the one bit plane according to a data format conforming to the intra-coding if the decoding target block has been coded by intra-coding, and to write the coding information in the specified switch interpretation area according to a data format conforming to the inter-coding if the decoding target block has been coded by inter-coding; and a generation unit configured to generate a video signal by superimposing the one bit plane on a decoded image of the decoding target block. | 05-26-2011 |
20110074227 | ACCELERATION GENERATOR AND PSEUDO FORCE SENSE GENERATOR - An acceleration generator | 03-31-2011 |
20110061098 | AUTHENTICATION APPARATUS, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM IMPLEMENTING THE METHOD - For enabling single sign-on among applications, a linkage ID indicating connection between the authentication apparatus | 03-10-2011 |
20110044462 | SIGNAL ENHANCEMENT DEVICE, METHOD THEREOF, PROGRAM, AND RECORDING MEDIUM - The initial values of parameter estimates are set, including reverberation parameter estimates, which includes a regression coefficient used in a linear convolutional operation for calculating an estimated value of reverberation included in an observed signal, source parameter estimates, which includes estimated values of a linear prediction coefficient and a prediction residual power that identify the power spectrum of a source signal, and noise parameter estimates, which include noise power spectrum estimates. Then, the maximum likelihood estimation is used to alternately repeat processing for updating at least one of the reverberation parameter estimates and the noise parameter estimates and processing for updating the source parameter estimates until a predetermined termination condition is satisfied. | 02-24-2011 |
20110044405 | CODING METHOD, DECODING METHOD, APPARATUSES THEREOF, PROGRAMS THEREOF, AND RECORDING MEDIUM - A coding method with a small error is provided. In the coding method of the present invention, a normalization value obtained from an input signal is corrected for an error calculated from an input and output in vector quantization and is then quantized. The coding method includes a normalization stage of normalizing the input signal in accordance with the normalization value of the input signal, calculated in each frame; a dividing stage of dividing the normalized frame into divided input signal sequences in accordance with a predetermined rule; a vector quantization stage of applying vector quantization to the divided input signal sequences to generate a vector quantization index; and a normalization value correction stage of correcting the normalization value of the input signal for the error obtained from the input and output in the vector quantization stage. | 02-24-2011 |
20110038373 | PACKET TRANSMISSION METHOD AND PACKET TRANSMISSION DEVICE - A packet transfer method in a network apparatus that transfers packets is disclosed. In the packet transfer method, a sending side apparatus generates two copies of a send packet, provides a sequence number identifying the same sending sequence to each of the copied packets, provides an identifier corresponding to a send/receive pair to each of the copied packets to send the packets, and a receiving side apparatus receives each of the packets with two receiving units; recognizes the identifiers each corresponding to a send/receive pair; identifies packets having the same information and the sequence based on the sequence number when the identifiers are the same; selects one of the packets of the same sequence so as to send the packet downstream, and discards another packet, wherein, when only one of the packets of the same sequence arrives, the arriving packet is sent downstream. | 02-17-2011 |
20100298727 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A cuff including a base composed of a non-elastic member. The cuff further including an elastic member provided on one surface of the base. The cuff also including an air supplying pipe, where a pressing surface of the elastic member swells only on the one surface by supplying air from the air supplying pipe. | 11-25-2010 |
20100298722 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A living body information collecting apparatus with a part of the living body information collecting apparatus includes a shape composed of a cylinder, a cone, a prism, a pyramid, a truncated cone or a truncated pyramid. The living body information collecting apparatus further including a sensing part for collecting living body information. | 11-25-2010 |
20100298667 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A living body information detection circuit including a light-emitting element for irradiating a part of a living body with irradiating light. The living body information detection circuit further including a light-receiving element for receiving scattered light of the irradiating light scattered in the part of the living body to detect a pulse waveform. The living body information detection circuit also including a light shielding structure for limiting an angle of light entering the light-receiving element in front of the light-receiving element. | 11-25-2010 |
20100298666 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A living body information collecting system includes a portable terminal and a living body information collecting apparatus. The living body information collecting apparatus includes a sensing part for collecting living body information from an external auditory meatus. The living body information collecting apparatus further includes a drive control part for drive-controlling the sensing part and processing a signal from the sensing part. The living body information collecting apparatus also includes a transmission part for transmitting information processed by the drive control part. The portable terminal includes a terminal receive part for receive-processing information from the transmission part. The portable terminal also includes a display part for displaying information from the terminal receive part. | 11-25-2010 |
20100298665 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A living body information detection apparatus including a pair of arms opposed to each other. The apparatus including a spindle for connecting between the arms of the pair at each end of the arms. The apparatus further including a distance variable mechanism, provided in the spindle, for adjusting an interval between the other ends of the pair of arms. The apparatus also including a detection part, for detecting living body information, attached to the other end of at least one arm of the pair of arms on a side opposed to another arm. | 11-25-2010 |
20100292588 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A blood-pressure meter includes a frame part including a first arm and a second arm that are opposed to each other. The blood-pressure meter further including a pressure applying part provided on at least one of a side of the first arm opposed to the second arm and a side of the second arm opposed to the first arm. The blood-pressure meter also including a detection part for detecting a pulse wave. | 11-18-2010 |
20100292585 | LIVING BODY INFORMATION DETECTION APPARATUS AND BLOOD-PRESSURE METER - A living body information detection apparatus for detecting living body information at an auricle of a human body. The living body information detection apparatus having a shape that follows a cartilage of the auricle in a periphery of a concha auriculae. | 11-18-2010 |
20100218250 | NETWORK MONITORING APPARATUS, NETWORK MONITORING METHOD, AND NETWORK MONITORING PROGRAM - A traffic monitoring system ( | 08-26-2010 |
20100217990 | COMMUNICATION METHOD, RELAY SERVER DEVICE, PROGRAM, AND RECORDING MEDIUM - A first connection between a first terminal | 08-26-2010 |
20100215105 | MOTION SEARCH APPARATUS IN VIDEO CODING - In motion search using a PE array, a technique is provided for enabling high-speed calculation while avoiding bank conflict without increasing a memory for storing pixels outside the screen. When pieces of pixel data of a plurality of lines to be read from the memory | 08-26-2010 |
20100033030 | ACCELERATION GENERATOR AND PSEUDO FORCE SENSE GENERATOR - An acceleration generator | 02-11-2010 |
20090279598 | METHOD, APPARATUS, AND PROGRAM FOR ENCODING DIGITAL SIGNAL, AND METHOD, APPARATUS, AND PROGRAM FOR DECODING DIGITAL SIGNAL - A down sampler | 11-12-2009 |
20090147793 | PACKET COMMUNICATION NETWORK AND PACKET COMMUNICATION METHOD - A packet communication network is connected between a first external network and a second external network. The packet communication network includes a classifier, a parallel network that includes a plurality of physically or logically independent networks, and a multiplexing router. The classifier classifies a packet input from the first external network to one of the networks in the parallel network. Each of the networks in the parallel network transmits the packet to the multiplexing router. The multiplexing router multiplexes a packet received from the networks in the parallel network and outputs the multiplexed packet to the second external network. | 06-11-2009 |
20090074242 | ELECTRONIC WATERMARK EMBEDDING METHOD, DEVICE, AND PROGRAM, AND ELECTRONIC WATERMARK DETECTING METHOD, DEVICE, AND PROGRAM - A digital watermark embedding apparatus for embedding embedding information, as digital watermark, into an input signal having dimensions equal to or greater than N (N is an integer equal to or greater than 2) and a digital watermark detection apparatus for detecting the digital watermark are disclosed. The digital watermark embedding apparatus generates an embedding sequence based on embedding information, generates a N−1-dimensional pattern based on the embedding sequence, generates N-dimensional embedding pattern by modulating a periodic signal according to a value on the N−1-dimensional pattern, and superimposing the embedding pattern in the input signal and outputs it. The digital watermark detection apparatus measures a component of a predetermined periodic signal in a direction of a dimension of the input signal to obtain a N−1-dimensional pattern, obtains a detection sequence from values of the N−1 dimensional pattern, and detects embedded digital watermark based on a size of correlation value between the detection sequence and an embedding sequence. | 03-19-2009 |
20090073874 | RING-SHAPED REDUNDANT COMMUNICATION PATH CONTROL METHOD - In a ring redundant communication path control method, each of transfer apparatuses periodically transmits an inspection frame for inspecting a communication path, detects a failure of the communication path when the inspection frame is not received for a fixed time, transmits a non-arrival notification frame for notifying that the inspection frame has not arrived yet, and detects a failure of the communication path when the non-arrival notification frame is received. Each of the transfer apparatuses closes, when a failure is detection, a port in which the failure is detected, transmits an open command frame for commanding to open a normally closed port from the other port other than the closed port, transfers an open command frame when the open command frame is received, and opens the normally closed port when the other port other than the closed port in which the failure is detected, the port in which the open command frame is detected, or the other port configuring a ring redundant communication path same as that of the port is the normally closed port. | 03-19-2009 |
20090054552 | FIBER-REINFORCED COMPOSITE MATERIAL AND PROCESS FOR PRODUCING THE SAME - Disclosed is a highly transparent fiber-reinforced composite material including an assembly of cellulose fibers of 4 to 200 nm average fiber diameter impregnated with a matrix material so as to not only remedy the moisture absorbency attributed to cellulose fibers but also further improve transparency. There is provided a fiber-reinforced composite material including an assembly of cellulose fibers impregnated with a matrix material. In the fiber-reinforced composite material, hydroxyl groups of cellulose fibers are chemically modified through a reaction with one or more chemical modifiers selected from the group consisting of an acid, an alcohol, a halogenating reagent, an acid anhydride, and an isocyanate so that the ratio of a functional group introduced by the chemical modification is 5 to 40 percent by mole based on the hydroxyl groups of cellulose fibers before the chemical modification. The chemical modification of hydroxyl groups of cellulose fibers can reduce the hydrophilicity of cellulose fibers to thereby reduce the moisture absorbency of fiber-reinforced composite material. Further, the affinity between cellulose fibers and matrix material can be enhanced to thereby further improve transparency. | 02-26-2009 |
20080317115 | Video Encoding Method and Apparatus, Video Decoding Method and Apparatus, Programs Therefor, and Storage Media for Storing the Programs - A video encoding method for assigning a plurality of images to a plurality of GOPs and encoding images belonging to the GOPs as a video image. The method includes determining whether each image belonging to each GOP is to be encoded; encoding GOP encoding/non-encoding data for indicating whether encoded data of the image belonging to the relevant GOP is output; and encoding the image belonging to the relevant GOP when the encoded data of the image is output. Typically, it is determined whether an image generated by using one or more other GOPs without decoding the encoded data of the relevant GOP is closer to an original image of the relevant image in comparison with an image obtained by decoding the encoded data, so as to determine whether the image belonging to the relevant GOP is to be encoded. | 12-25-2008 |