Patents Assigned to Nara Institute of Science and Technology
  • Publication number: 20110003979
    Abstract: The present invention has been created to provide a near infrared high emission rare-earth complex having an excellent light-emitting property in the near infrared region. The near infrared high emission rare-earth complex of the present invention is characterized in that its structure is expressed by the following general formula (1): where Ln(III) represents a trivalent rare-earth ion; n is an integer equal to or greater than three; Xs represent either the same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand.
    Type: Application
    Filed: February 26, 2009
    Publication date: January 6, 2011
    Applicants: National University Corporation Nara Institute of Science and Technology, National University Corporation Shizuoka University
    Inventors: Yasuchika Hasegawa, Hideki Kawai, Tsuyoshi Kawai
  • Publication number: 20100296665
    Abstract: A In a noise suppression apparatus, an extractor extracts a noise component from an audio signal. A stationary noise estimator estimates stationary noise included in the noise component. A first noise suppressor removes a spectrum of the stationary noise from a spectrum of the audio signal to an extent determined by a subtraction factor. A non-stationary noise estimator estimates a spectrum of non-stationary noise by subtracting the spectrum of the stationary noise from the spectrum of the noise component. A factor setter generates a filtering factor for emphasizing a target sound component contained in the audio signal from the spectrum of the non-stationary noise. A second noise suppressor performs a filtering process using the filtering factor on the audio signal after processing of the first noise suppressor.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicants: Nara Institute of Science and Technology National University Corporation, Yamaha Corporation
    Inventors: Yohei ISHIKAWA, Yu Takahashi, Hiroshi Saruwatari, Kazunobu Kondo
  • Publication number: 20100278885
    Abstract: A solution containing a C70 cyclodextrin complex and a solution containing a lipid that is capable of forming a liposome are mixed together at a temperature in a range of 10° C. to 45° C. This produces a C70-incorporated liposome which keeps a physical property that the C70 fullerene originally has, and is stably solubilized in a polar solvent. Hence, the present invention provides a C70-incorporated liposome which keeps a physical property that the C70 fullerene originally has, and which is stably solubilized in a polar solvent, a production method of the same, and a use of the same.
    Type: Application
    Filed: February 6, 2008
    Publication date: November 4, 2010
    Applicant: National University Corporation Nara Institute of Science and Technology
    Inventors: Atsushi Ikeda, Jun-ichi Kikuchi
  • Publication number: 20100267072
    Abstract: Singar is identified as a novel molecule, whose expression is varied before and after the polarization of a nerve cell, and occurs in the tip of an elongating axon, called a growth cone, which is important for the formation or elongation of an axon. Singar is expressed specifically in the brain and the amount of Singar expression is largely increased in an individual during periods where the formation of axons is increased. It is observed that Singar is highly enriched in the growth cone at the tip of an axon. When the expression of Singar is inhibited in nerve cells in culture, the formation of multiple axons is induced. Thus, the inhibition of Singar can induce axon formation. Therefore, by inhibiting the expression or activity of Singar, it becomes possible to induce or promote the formation or elongation of an axon in a nerve cell.
    Type: Application
    Filed: October 26, 2006
    Publication date: October 21, 2010
    Applicants: National University Corporation Nara Institute of Science and Technology, Kazusa DNA Research Institute
    Inventors: Naoyuki Inagaki, Tatsuya Mori, Osamu Ohara, Takahiro Nagase
  • Patent number: 7813544
    Abstract: An estimation device estimates a hidden state of an estimation subject from an observable state in a manner of a time series. The observable state is observed from the hidden state of the estimation subject under a procedure that has a hierarchical structure, which includes the hidden state of the estimation subject, the observable state, and an intermediate hidden state therebetween. The estimation device includes an estimation subject hidden state predicting means, an intermediate hidden state predicting means based on the state transition structure of the hidden state of the estimation subject, an intermediate hidden state likelihood observing means, an intermediate hidden state estimating means, an estimation subject hidden state likelihood observing means, estimation subject hidden state estimating means, an intermediate hidden state predicting means based on the state transition structure of the intermediate hidden state, and the mixing means.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: October 12, 2010
    Assignees: Denso Corporation, National University Corporation Nara Institute of Science and Technology
    Inventors: Naoki Fukaya, Mikio Shimizu, Shin Ishii, Tomohiro Shibata, Takashi Bando
  • Patent number: 7804764
    Abstract: The transmitter of one embodiment of the present invention includes: a S/P section for converting original serial data to parallel data which will correspond to a plurality of subcarriers; and a second IFFT section for converting the parallel data from the frequency domain to the time domain. The transmitter includes, between the S/P section and the second IFFT section, a first IFFT section for modulating the plurality of subcarriers using elements of a matrix derived from an expression for Inverse Discrete Fourier Transform involving time domain signal levels and frequency domain signal levels. The configuration enables CI and PO-CI to be implemented on transmitters and receivers with a simple configuration.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: September 28, 2010
    Assignees: National University Corporation Nara Institute of Science and Technology, Sky Perfect JSAT Corporation
    Inventors: Takao Hara, Anwar Khoirul, Kiyotake Ando
  • Patent number: 7796242
    Abstract: In one embodiment of the present invention, an information identification device, an information identification method, and an information identification system each of which can maintain a high security level and which can be used for a long time without any restrictions on use conditions are realized. An ID identification system includes: an ID identifying medium containing a rare-earth complex; and an ID identification device for identifying identification information corresponding to the rare-earth complex.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: September 14, 2010
    Assignees: National University Corporation, Nara Institute of Science and Technology
    Inventors: Yasuchika Hasegawa, Tsuyoshi Kawai
  • Patent number: 7778430
    Abstract: A microphone is installed on a surface of the skin immediately below the mastoid of a human to implement a sound sampling method including sampling at least one of a non-audible murmur, a whisper, or an audible sound. The microphone includes a condenser microphone portion having a pair of diaphragm electrodes and a contact portion which has an acoustic impedance close to the acoustic impedance of soft tissues in a body of a speaker, which is stuck tightly to the condenser microphone portion with no intervening air space, and which conducts an input speech from a skin surface of the speaker to the condenser microphone.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: August 17, 2010
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Yoshitaka Nakajima, Makoto Shozakai, Sakae Fujimaki
  • Patent number: 7771977
    Abstract: Disclosed is a protein selected from: (1) a protein comprising the amino acid sequence of SEQ ID NO: 1 in the Sequence Listing; (2) a protein comprising the amino acid sequence of SEQ ID NO: 1 in the Sequence Listing with the deletion, addition, insertion and/or substitution of one or more amino acid residues, and having an alkane polyol dehydrogenase activity; or (3) a protein comprising an amino acid sequence having 80% or more identity with the amino acid sequence of SEQ ID NO: 1 in the Sequence Listing, and having an alkane polyol dehydrogenase activity. Also disclosed is a process for producing an alcohol, a ketone, an optically-active alcohol, dihydroxyacetone or a derivative thereof, using the protein.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: August 10, 2010
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Keiko Onodera, Yoshiki Tani
  • Patent number: 7767808
    Abstract: A porphyrin/phthalocyanine dimer represented by the following Formula (A-1) and a tetramer represented by the following Formula (A-2) (where R1, R2 and R3 may be the same or different, and each represents a hydrogen atom or an alkyl or alkyloxy group; M1 and M2 may be the same or different, and each represents two protons or a bivalent or trivalent metal ion; X1 represents a single bond or an alkylene group; X represents —O—, —S—, >NR101 (where R101 represents H or alkyl group), CH2, or a single bond; Y represents 2H, ?O or ?S; m is an integer of 0 to 4; Z represents a five- or six-membered nitrogen-containing coordinating heteroaromatic ring group; provided that the multiple substituent groups represented by the same character may be the same or different.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: August 3, 2010
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Yoshiaki Kobuke, Akiharu Satake, Kazuya Ogawa
  • Patent number: 7728893
    Abstract: Each pixel cell (12) of an image sensor (10) is made of a 4-Tr structure, in which only one Tr for resetting a column (X) is so added to an ordinary 3-Tr APS as to reset only an arbitrary pixel selectively, thereby to confine the pixel size. When a pixel signal is to be read, the period, for which the pixel signals composing an ordinary image of one frame are read, is finely divided so that the pixel signals of the pixels receiving an ID light for the period are read out bit by bit and repeatedly. At this time, for only the column being read, an electric current is fed to a read amplifier in the pixel cell (12) or a variable gain amplifier in an output unit (14), thereby to suppress the power consumption. As a result, a lower power consumption and a higher pixel formation can be attained in an image pickup device for picking up an image and for acquiring the ID information of a light beacon existing in the image pickup range.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: June 1, 2010
    Assignees: Japan Science and Technology Agency, National University Corporation Nara Institute of Science and Technology
    Inventors: Keiichiro Kagawa, Yuki Maeda, Jun Ohta
  • Patent number: 7715723
    Abstract: In a system for data communication between an information terminal to be operated by a user and remote communication nodes, the present invention intends to suppress the power consumption of the information terminal. For that purpose, communication nodes 2, 3 and 4 each emit diffuse light carrying a pilot signal blinking at a low frequency to notify the presence of the communication node and an ID signal belonging to a higher frequency range, the ID signal containing inherent address etc. for identifying each communication node. A mobile phone 1 as the information terminal captures an image and processes the image data to detect the pilot signal of each communication node. Then, determining the position of each node and setting a limited range for reading the pixels around that position, the mobile phone 1 reads the detection signals of the pixels within the limited range at high speed and obtains identification information.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: May 11, 2010
    Assignees: Japan Science and Technology Agency, National University Corporation Nara Institute of Science and Technology
    Inventors: Keiichiro Kagawa, Yuki Maeda, Jun Ohta
  • Patent number: 7655923
    Abstract: A mesh (M) having an ellipsoid shape or a shape close to the ellipsoid shape is attached to an electrode (EL1) among electrodes (EL1 to ELn). Voltages of the later-stage electrodes (EL2 to ELn) are appropriately set. With this arrangement, a local negative spherical aberration generated by the mesh (M) is cancelled out with a positive spherical aberration. This optimizes an electric field distribution. As a result, this realizes an electrostatic lens whose acceptance angle is extended to about ±60°.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: February 2, 2010
    Assignees: National University Corporation Nara Institute of Science and Technology, Jeol, Ltd.
    Inventors: Hiroshi Daimon, Hiroyuki Matsuda, Makoto Kato, Masato Kudo
  • Publication number: 20100019127
    Abstract: After resetting the potential VPD of the photodiode (11) to the predetermined potential VRST, light is incident onto the photodiode (11) for a predetermined period to decrease the VPD corresponding to the amount of the incident light. After that, a declivous ramp voltage VRAMP is applied to the source terminal of the first MOS transistor (12) which is a common-source amplifier for reading out the VPD. When the voltage difference between the gate and source of the MOS transistor (12) exceeds a threshold voltage, the MOS transistor is turned on and the output suddenly decreases. If a signal having a pulse width from the starting point of the sweep of the ramp voltage to the sudden lowering point of the output is generated, the pulse width depends on the amount of the incident light. With the signal readout of this PWM method, it is possible to lower the power consumption while a wide dynamic range is maintained, and to downsize the picture cells to achieve a higher number of picture cells.
    Type: Application
    Filed: June 6, 2006
    Publication date: January 28, 2010
    Applicant: National University Corporation Nara Institute of Science and Technology
    Inventors: Keiichiro Kagawa, Jun Ohta
  • Publication number: 20100008520
    Abstract: A noise suppression estimation device calculates a noise index value which varies according to kurtosis of a frequence distribution of magnitude of a sound signal before or after suppression of the noise component, the noise index value indicating a degree of occurrence of musical noise after suppression of the noise component in a frequency domain. For example, the noise suppression estimation device calculates first kurtosis of a frequence distribution of magnitude of the sound signal before suppression of the noise component, calculates second kurtosis of a frequence distribution of magnitude of the sound signal after suppression of the noise component, and calculates the noise index value from the first kurtosis and the second kurtosis.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Applicants: Yamaha Corporation, Nara Institute of Science and Technology National University Corporation
    Inventors: Hiroshi SARUWATARI, Yoshihisa Uemura, Kazunobu Kondo
  • Patent number: 7642401
    Abstract: We prepared a transgene comprising human HB-EGF precursor cDNA, as a diphtheria toxin receptor gene, at the downstream of an insulin promoter, and introduced this transgene into a mouse fertilized egg, to produce a transgenic mouse of the present invention. In this mouse, human HB-EGF precursors are expressed specifically in islet beta cells, and by injection of diphtheria toxin, islet beta cells are selectively destroyed, resulting in that the mouse shows diabetes two or three days after the injection. This mouse can be utilized in screening and development of new medicines and therapy protocols for diabetes.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: January 5, 2010
    Assignees: National University Corporation Nara Institute of Science and Technology, University of Geneva
    Inventors: Kenji Kohno, Pedro Herrera, Virginie Nepote
  • Patent number: 7628938
    Abstract: The present invention provides a photochromic compound that is colored when irradiated with visible light and quickly faded when set in a dark place. The photochromic compound according to the present invention is expressed by the following general formula (I): where each of A1, A2 and A3 is a five-member rings forming a 6?-electron system, the three rings being identical, partially identical or totally different from each other, and each ring may have a substituent; B1 and B2 are functional groups, each having an atomic number of five or larger, including a ring compound, and bonded to the 2-carbon of each of A2 and A3, respectively; and R1, R2 and R3 are substituents identical to or different from each other. This compound is highly colorable and durable even when it is dispersed into plastic macromolecular materials. Therefore, it is suitable as a dye material for sunglasses or similar products.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: December 8, 2009
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Tsuyoshi Kawai, Takuya Nakajima, Shigekazu Kawai
  • Patent number: 7601941
    Abstract: Disclosed is a method for evaluating the performance of a solar cell which comprises a silicon semiconductor as the main component. This method comprises a current introduction step for introducing a direct current into a solar cell element constituting the solar cell in the forward direction, and an emission sensing step for sensing emission characteristics of the light emitted from the solar cell element due to the current introduction step. By this method, the photoelectric conversion performance of a solar cell can be simply and accurately evaluated without requiring large-sized equipment.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: October 13, 2009
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventor: Takashi Fuyuki
  • Patent number: 7591166
    Abstract: A tactile sensor of an embodiment of the present invention includes: a sensing section having an elastic member at a portion which contacts a measurement target; an image acquiring section for acquiring as image information the state of a contact surface of the measurement target and the elastic member, before and after application of an external force tangential to the contact surface; a deformation analyzing section for analyzing deformation information of the contact surface, based on the image information acquired by the image acquiring section; an external force detecting section for detecting the external force applied tangential to the contact surface; and an estimating section for estimating a slippage margin between the measurement target and the elastic member, based on (I) the deformation information of the contact surface, which information acquired by the deformation analyzing section, (II) the external force detected by the external force detecting section, and (III) an object constant of the el
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: September 22, 2009
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Jun Ueda, Yutaka Ishida, Tsukasa Ogasawara
  • Publication number: 20090216510
    Abstract: A mobile node simulator (100) includes: a behavior simulator section (140) for simulating behaviors of a plurality of mobile nodes in accordance with a behavior model, the behavior model being definable by a user; and a network simulator section (120) for simulating a communication on a network including the plurality of mobile nodes. A network application (180) targeted for an evaluation of a simulation is implemented on the network simulator section (120). The network simulator section (120) is configured to output an output from the network application (180) to the behavior simulator section (140) at each simulation time t. The behavior simulator section (140) is configured to be capable of changing a behavior of at least one of the plurality of mobile nodes in accordance with the behavior model in response to the output from the network application (180).
    Type: Application
    Filed: August 30, 2005
    Publication date: August 27, 2009
    Applicants: Osaka University, Nara Institute of Science and Technology
    Inventors: Teruo Higashino, Hirozumi Yamaguchi, Keiichi Yasumoto