Patents Assigned to Nippon Telegraph and Telephone Corp.
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Publication number: 20110044462Abstract: 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.Type: ApplicationFiled: March 5, 2009Publication date: February 24, 2011Applicant: Nippon Telegraph and Telephone Corp.Inventors: Takuya Yoshioka, Tomohiro Nakatani, Masato Miyoshi
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Patent number: 7894700Abstract: A holding member includes a flared tubular body and collectively holds a plurality of unused optical fibers provided with optical connectors within an optical distribution frame. The tubular body has a rectangular cross section and includes an elongated rectangular lower opening and an upper opening wider than the lower opening. A part of sidewalls of the tubular body is formed to serve as an openable cover. The cover is first opened; the optical fibers provided with the optical connectors are accommodated in the tubular body; and then the cover is closed.Type: GrantFiled: July 9, 2009Date of Patent: February 22, 2011Assignees: Fujikura Ltd., Nippon Telegraph & Telephone Corp.Inventors: Norihiro Momotsu, Kazuya Ogata, Katsuaki Suzuki, Shigenori Uruno, Arata Natsume
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Publication number: 20110038373Abstract: 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.Type: ApplicationFiled: October 28, 2010Publication date: February 17, 2011Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Ippei SHAKE, Mitsunori Fukutoku, Wataru Imajyuku, Katsuhiro Shimano
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Publication number: 20100298665Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji Higurashi, Kazunori Naganuma, Shouichi Sudo, Junichi Shimada, Kimihisa Aihara, Hiroshi Koizumi, Naoe Tatara, Shoichi Hayashida, Shinji Mino, Taisuke Oguchi, Osamu Tochikubo
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Publication number: 20100298667Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji HIGURASHI, Kazunori NAGANUMA, Shouichi SUDO, Junichi SHIMADA, Kimihisa AIHARA, Hiroshi KOIZUMI, Naoe TATARA, Shoichi HAYASHIDA, Shinji MINO, Taisuke OGUCHI, Osamu TOCHIKUBO
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Publication number: 20100298722Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji Higurashi, Kazunori Naganuma, Shouichi Sudo, Junichi Shimada, Kimihisa Aihara, Hiroshi Koizumi, Naoe Tatara, Shoichi Hayashida, Shinji Mino, Taisuke Oguchi, Osamu Tochikubo
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Publication number: 20100298666Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji HIGURASHI, Kazunori NAGANUMA, Shouichi SUDO, Junichi SHIMADA, Kimihisa AIHARA, Hiroshi KOIZUMI, Naoe TATARA, Shoichi HAYASHIDA, Shinji MINO, Taisuke OGUCHI, Osamu TOCHIKUBO
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Publication number: 20100298727Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji Higurashi, Kazunori Naganuma, Shouichi Sudo, Junichi Shimada, Kimihisa Aihara, Hiroshi Koizumi, Naoe Tatara, Shoichi Hayashida, Shinji Mino, Taisuke Oguchi, Osamu Tochikubo
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Publication number: 20100292585Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 18, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji Higurashi, Kazunori Naganuma, Shouichi Sudo, Junichi Shimada, Kimihisa Aihara, Hiroshi Koizumi, Naoe Tatara, Shoichi Hayashida, Shinji Mino, Taisuke Oguchi, Osamu Tochikubo
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Publication number: 20100292588Abstract: 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.Type: ApplicationFiled: July 30, 2010Publication date: November 18, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Yuji UENISHI, Eiji Higurashi, Kazunori Naganuma, Shouichi Sudo, Junichi Shimada, Kimihisa Aihara, Hiroshi Koizumi, Naoe Tatara, Shoichi Hayashida, Shinji Mino, Taisuke Oguchi, Osamu Tochikubo
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Publication number: 20100217990Abstract: A first connection between a first terminal 10 and a relay server device 30 is established when the relay server 30, having a connection standby function, is triggered by first connection establishment request information transmitted from the first terminal 10 having a connection establishment request function but not having the connection standby function. A second connection between a second terminal 20 and the relay server device 30 is established when the relay server 30 is triggered by second connection establishment request information transmitted from the second terminal 20 having the connection establishment request function. First endpoint information corresponding to the first connection and the identifier of the first terminal 10 are stored in association with each other in a memory 30g of the relay server device 30.Type: ApplicationFiled: May 28, 2008Publication date: August 26, 2010Applicant: Nippon Telegraph and Telephone Corp.Inventors: Tsuyoshi Abe, Makiko Aoyagi, Manabu Okamoto, Hiroki Itoh, Kenji Takahashi, Hiroyoshi Takiguchi
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Publication number: 20100218250Abstract: A traffic monitoring system (10) monitors traffics flowing through a network (100); when an abnormal traffic is detected, identifies an attack source network, a source of an attack, on the basis of attack source information indicating a source device from which the abnormal traffic is transmitted, which is obtained by an analysis of the abnormal traffic, and also identifies an attack destination network, a destination of the attack, on the basis of attack destination information indicating a destination device to which the abnormal traffic is to be transmitted, which is obtained by the analysis of the abnormal traffic; notifies an administrator of the attack source network of the attack source information by acquiring administrator information corresponding to the identified attack source network; and notifies an administrator of the attack destination network of the attack destination information by acquiring administrator information corresponding to the identified attack destination network.Type: ApplicationFiled: September 29, 2008Publication date: August 26, 2010Applicant: Nippon Telegraph and Telephone Corp.Inventors: Hideo Mori, Kazuaki Chikira
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Publication number: 20100215105Abstract: 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 3 (reference image memory 30) exist in a same bank, the conflict bank anticipatory read control unit 10 reads pixel data of a line in advance, and a read data holding circuit 20 holds the data until timing for inputting to a PE array unit 4. Accordingly, bank conflict can be avoided when reading pixel data from the memory 3, so that smooth pipeline processing by the PE array unit 4 can be realized.Type: ApplicationFiled: September 12, 2008Publication date: August 26, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Koyo Nitta, Hiroe Iwasaki, Jirou Naganuma
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Publication number: 20100033030Abstract: An acceleration generator 20 includes: a moving member (21, 25) that performs a periodic translational motion along a particular straight line; a first operating part (24) that applies a first force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line; and a second operating part (27) that applies a second force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line. The moving member performs a translational motion in which the acceleration thereof in the positive direction and the acceleration thereof in the negative direction are asymmetric in one period.Type: ApplicationFiled: January 24, 2007Publication date: February 11, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Tomohiro Amemiya, Hideyuki Andou, Tarou Maeda
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Publication number: 20090279598Abstract: A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unit 18 array converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.Type: ApplicationFiled: July 14, 2009Publication date: November 12, 2009Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Takehiro Moriya, Akio Jin, Kazunaga Ikeda, Takeshi Mori
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Publication number: 20090147793Abstract: 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.Type: ApplicationFiled: October 25, 2005Publication date: June 11, 2009Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Kazuhiro Hayakawa, Satoru Yoshida, Makoto Fukuda, Nobuo Shigeta, Kazuhiko Ogawa, Shin Hashimoto
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Publication number: 20090074242Abstract: 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.Type: ApplicationFiled: March 1, 2007Publication date: March 19, 2009Applicant: Nippon Telegraph and Telephone Corp.Inventors: Susumu Yamamoto, Takao Nakamura
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Publication number: 20090073874Abstract: 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.Type: ApplicationFiled: March 27, 2007Publication date: March 19, 2009Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.Inventors: Masahiro Maruyoshi, Muneyoshi Suzuki, Kunio Hato, Katsuya Minami
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Publication number: 20090054552Abstract: 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.Type: ApplicationFiled: January 31, 2006Publication date: February 26, 2009Applicants: Kyoto University, Nippon Telegraph and Telephone Corp., Pioneer Corporation, Mitsubishi Chemical Corporation, Rohm Co., Ltd.Inventors: Hiroyuki Yano, Masaya Nogi, Fumiaki Nakatsubo, Shinsuke Ifuku
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Publication number: 20080317115Abstract: 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.Type: ApplicationFiled: September 30, 2005Publication date: December 25, 2008Applicant: Nippon Telegraph and Telephone CorpInventors: Masaki Kitahara, Hideaki Kimata