Patents by Inventor Hideyuki Matsuura
Hideyuki Matsuura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240120996Abstract: An optical transmitter includes: an optical modulator of a Mach-Zehnder type using an InP-based material; a bias controller configured to control a DC bias applied to the optical modulator; a monitor configured to monitor output light of the optical modulator to generate a monitor signal; and a corrector configured to correct a gain of the monitor signal in a direction in which wavelength dependency of insertion loss of the optical modulator is compensated according to a wavelength at a preceding stage of bias control by the bias controller.Type: ApplicationFiled: August 1, 2023Publication date: April 11, 2024Applicant: Fujitsu LimitedInventors: Hideyuki MATSUURA, Kosuke KOMAKI, Hidetoshi SATO, Katsutoshi ISHIDOU
-
Publication number: 20220151985Abstract: An immunostimulator that comprises a compound represented by general formula I (wherein n stands for an integer of 4-12) or a pharmacologically acceptable salt thereof as an active ingredient.Type: ApplicationFiled: March 26, 2020Publication date: May 19, 2022Inventors: Keima ABE, Hiroshi NISHIOKA, Sho TAKANO, Makiko TAKAHASHI, Hideyuki MATSUURA
-
Patent number: 10370880Abstract: A main body case is provided with an opening and closing lid supported in an openable and closable manner by a spindle at one end portion thereof as well as slidably attached in a direction orthogonal to a length direction of the spindle; a pair of unlocking knobs slidably arranged along a front surface of the opening and closing lid; and a locking portion formed on a main body case side that puts the opening and closing lid in a locked state by locking a step portion on a free end portion side of the opening and closing lid by sliding operating the opening and closing lid in one direction in a state where the opening and closing lid is closed.Type: GrantFiled: October 29, 2015Date of Patent: August 6, 2019Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventors: Akira Masuda, Hideyuki Matsuura, Yoshihiko Naito
-
Patent number: 9871596Abstract: An optical receiver including: a digital filter that performs spectral shaping on a signal; an analyzer that analyzes a spectrum waveform of the signal; a determiner that determines, based on an analysis result by the analyzer, whether the spectrum waveform of the signal is a Nyquist waveform on the basis of a Nyquist first reference; and a controller that stops the spectral shaping of the signal to be performed by the digital filter when the spectrum waveform of the signal is not the Nyquist waveform as a result of the determination by the determiner, and controls a filter coefficient of the digital filter based on the spectrum waveform of the signal when the spectrum waveform of the signal is the Nyquist waveform as the result of the determination by the determiner.Type: GrantFiled: July 1, 2016Date of Patent: January 16, 2018Assignee: FUJITSU LIMITEDInventors: Daijiro Tanaka, Hideyuki Matsuura, Osamu Takeuchi, Takeshi Hoshida
-
Publication number: 20170041080Abstract: An optical receiver including: a digital filter that performs spectral shaping on a signal; an analyzer that analyzes a spectrum waveform of the signal; a determiner that determines, based on an analysis result by the analyzer, whether the spectrum waveform of the signal is a Nyquist waveform on the basis of a Nyquist first reference; and a controller that stops the spectral shaping of the signal to be performed by the digital filter when the spectrum waveform of the signal is not the Nyquist waveform as a result of the determination by the determiner, and controls a filter coefficient of the digital filter based on the spectrum waveform of the signal when the spectrum waveform of the signal is the Nyquist waveform as the result of the determination by the determiner.Type: ApplicationFiled: July 1, 2016Publication date: February 9, 2017Applicant: FUJITSU LIMITEDInventors: Daijiro Tanaka, Hideyuki MATSUURA, Osamu Takeuchi, Takeshi Hoshida
-
Publication number: 20160143166Abstract: A main body case is provided with an opening and closing lid supported in an openable and closable manner by a spindle at one end portion thereof as well as slidably attached in a direction orthogonal to a length direction of the spindle; a pair of unlocking knobs slidably arranged along a front surface of the opening and closing lid; and a locking portion formed on a main body case side that puts the opening and closing lid in a locked state by locking a step portion on a free end portion side of the opening and closing lid by sliding operating the opening and closing lid in one direction in a state where the opening and closing lid is closed.Type: ApplicationFiled: October 29, 2015Publication date: May 19, 2016Inventors: Akira MASUDA, Hideyuki MATSUURA, Yoshihiko NAITO
-
Patent number: 9163254Abstract: An object of the present invention is to identify sequence features of the 5? UTR, which are involved in changes in the translational state of plants under environmental stresses, and to provide a recombinant DNA molecule, an expression vector, a transformant, and the like, having the above sequence features.Type: GrantFiled: August 19, 2010Date of Patent: October 20, 2015Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Ko Kato, Shigehiko Kanaya, Hideyuki Matsuura, Shinya Takenami, Tatsuya Nosho, Yuhki Kubo, Kiyotaka Ueda
-
Patent number: 9098199Abstract: A data receiver includes a writing unit that receives transmission data including live data and excessive data for adjusting a signal length to store the live data in a storage unit, an AND circuit that generates a first signal indicating the positions of the live data and the excessive data in the signal length of the transmission data, a signal converting unit that generates a second signal indicating positions at which positions of the excessive data in the first signal are rearranged at certain intervals in the signal length, a digital phase locked loop (DPLL) unit that smoothes the positions of the live data in the second signal to generate a third signal indicating the timing to read the live data in the signal length, and a reading unit that reads the live data stored in the storage unit by using the third signal.Type: GrantFiled: September 3, 2013Date of Patent: August 4, 2015Assignee: FUJITSU LIMITEDInventors: Hideyuki Matsuura, Hironobu Hongou
-
Publication number: 20140140460Abstract: A data receiver includes a writing unit that receives transmission data including live data and excessive data for adjusting a signal length to store the live data in a storage unit, an AND circuit that generates a first signal indicating the positions of the live data and the excessive data in the signal length of the transmission data, a signal converting unit that generates a second signal indicating positions at which positions of the excessive data in the first signal are rearranged at certain intervals in the signal length, a digital phase locked loop (DPLL) unit that smoothes the positions of the live data in the second signal to generate a third signal indicating the timing to read the live data in the signal length, and a reading unit that reads the live data stored in the storage unit by using the third signal.Type: ApplicationFiled: September 3, 2013Publication date: May 22, 2014Applicant: FUJITSU LIMITEDInventors: Hideyuki MATSUURA, HIRONOBU HONGOU
-
Publication number: 20120273247Abstract: A coaxial cable includes an inner conductive wire, an insulating layer, an outer conductor layer, and a shielding conductor. The insulating layer covers the outer circumference of the inner conductive wire. The outer conductor layer covers the outer circumference of the insulating layer and includes an opening that exposes a part of the insulating layer. The shielding conductor is slidably attached to the outer circumference of the outer conductor layer and is configured to shield at least a part of the opening while sliding on the circumference of the outer conductor layer so as to increase or decrease the area of the insulating layer exposed from the opening.Type: ApplicationFiled: February 3, 2012Publication date: November 1, 2012Applicant: FUJITSU LIMITEDInventor: Hideyuki MATSUURA
-
Publication number: 20120174256Abstract: An object of the present invention is to identify sequence features of the 5? UTR, which are involved in changes in the translational state of plants under environmental stresses, and to provide a recombinant DNA molecule, an expression vector, a transformant, and the like, having the above sequence features.Type: ApplicationFiled: August 19, 2010Publication date: July 5, 2012Inventors: Ko Kato, Shigehiko Kanaya, Hideyuki Matsuura, Shinya Takenami, Tatsuya Nosho, Yuhki Kubo, Kiyotaka Ueda
-
Publication number: 20090302956Abstract: An atomic oscillator includes a light source, a first coil initiating the light source to emit light, a resonance cell having enclosed atoms absorbing light from the light source, a second coil adjusting the resonant frequency of the atoms in the resonance cell, a resonator supplying the microwave of a predetermined frequency to the resonance cell, a control circuit generating a control voltage corresponding to a light absorption amount in the resonance cell according to the microwave frequency, and an oscillator having an output signal frequency controlled to the resonant frequency by the control voltage, wherein the first and second coils and the resonator are formed of a conductor pattern on a rigid-flexible substrate having a rigid portion and a flexible portion, and the flexible portion is wound on the periphery of the light source and the resonance cell, and connected to a connector disposed on the rigid portion.Type: ApplicationFiled: February 19, 2009Publication date: December 10, 2009Applicant: FUJITSU LIMITEDInventor: Hideyuki Matsuura
-
Publication number: 20070244009Abstract: The present invention provides an agent for inhibiting bolting induction and/or floral-bud differentiation in plants and the method for inhibiting the bolting induction and/or floral differentiation of plants using the above-mentioned agent for inhibiting bolting induction and/or floral-bud differentiation in plants. Theobroxide or its analog is used as the agent for inhibiting bolting induction and/or floral-bud differentiation in plants. The agent for inhibiting bolting induction and/or floral-bud differentiation in plants is applied under a plant's bolting induction and/or floral differentiation condition, and controls the bolting induction and/or floral differentiation of the plant. In the case of long-day plants, such as spinach, wherein their bolting induction and floral differentiation occur under a long-day condition, spraying on plants is done under the corresponding long-day condition.Type: ApplicationFiled: July 5, 2005Publication date: October 18, 2007Applicant: National University Corporation Hokkaido UniversitInventors: Teruhiko Yoshihara, Hideyuki Matsuura, Kousaku Takahashi
-
Patent number: 7145403Abstract: The present invention relates to a static magnetic field applying structure for use in an atomic oscillator in which plural sets of magnetic field generating means are provided with spacing interposed among them, and a resonance cell is disposed in a space between the magnetic field generating means. The object of the present invention is to realize the static magnetic field applying structure which can be small-sized and produced at a low cost.Type: GrantFiled: April 23, 2004Date of Patent: December 5, 2006Assignee: Fujitsu LimitedInventors: Hideyuki Matsuura, Akira Kikuchi, Ken Atsumi
-
Patent number: 6985043Abstract: A compact atomic oscillator with improved frequency stability. A voltage-controlled oscillator generates an oscillation signal based on a given control voltage, and a modulator modulates it with a low-frequency signal. A phase-locked loop (PLL) upconverts the modulated oscillation signal directly to a first frequency in atomic resonance frequency band. The first frequency is an integer multiple of the oscillation signal. A frequency synthesizer produces a second frequency specified by a frequency setting unit, and a mixer combines the first and second frequencies to produce an RF signal for driving an atomic resonator. The amount of discharge lamp light passing through the atomic resonator depends on the difference between RF signal frequency and atomic resonance frequency. This quantity is measured as a resonance detection signal, and a frequency controller applies it to synchronous detection to produce a control voltage for the voltage-control oscillator.Type: GrantFiled: March 30, 2004Date of Patent: January 10, 2006Assignee: Fujitsu LimitedInventors: Ken Atsumi, Hideyuki Matsuura, Akira Kikuchi
-
Publication number: 20050128014Abstract: The present invention relates to a static magnetic field applying structure for use in an atomic oscillator in which plural sets of magnetic field generating means are provided with spacing interposed among them, and a resonance cell is disposed in a space between the magnetic field generating means. The object of the present invention is to realize the static magnetic field applying structure which can be small-sized and produced at a low cost.Type: ApplicationFiled: April 23, 2004Publication date: June 16, 2005Inventors: Hideyuki Matsuura, Akira Kikuchi, Ken Atsumi
-
Publication number: 20050068115Abstract: A compact atomic oscillator with improved frequency stability. A voltage-controlled oscillator generates an oscillation signal based on a given control voltage, and a modulator modulates it with a low-frequency signal. A phase-locked loop (PLL) upconverts the modulated oscillation signal directly to a first frequency in atomic resonance frequency band. The first frequency is an integer multiple of the oscillation signal. A frequency synthesizer produces a second frequency specified by a frequency setting unit, and a mixer combines the first and second frequencies to produce an RF signal for driving an atomic resonator. The amount of discharge lamp light passing through the atomic resonator depends on the difference between RF signal frequency and atomic resonance frequency. This quantity is measured as a resonance detection signal, and a frequency controller applies it to synchronous detection to produce a control voltage for the voltage-control oscillator.Type: ApplicationFiled: March 30, 2004Publication date: March 31, 2005Inventors: Ken Atsumi, Hideyuki Matsuura, Akira Kikuchi
-
Patent number: 6812800Abstract: In an atomic oscillator of an optical pumping system, a slot line resonator, as a microwave resonator, is arranged in a portion where atoms are excited. The slot line resonator forms a microstrip line inputting microwaves so as to be orthogonal to a slot line with a dielectric substrate being sandwiched therebetween. A container in which the atoms are enclosed is mounted on the slot line resonator, and the slot line resonator and the container are covered with a metallic case having a pumping light passage hole and a photo element.Type: GrantFiled: September 27, 2002Date of Patent: November 2, 2004Assignee: Fujitsu LimitedInventors: Hideyuki Matsuura, Ken Atsumi, Yoshito Koyama, Minoru Sakai
-
Patent number: 6801091Abstract: An oscillator controller which optimizes key circuit parameters of an excitation circuit according to the operating condition of a discharge lamp. An excitation circuit energizes a discharge lamp to produce a light beam for pumping atoms, as part of a mechanism of atomic resonance detection. The operation of the excitation circuit is monitored by a start-up voltage monitor, which asserts a voltage monitoring signal when the excitation circuit's start-up voltage is reached. A light amount monitor receives a resonance detection signal from a light sensing device to check the amount of light before and after the discharge lamp lights up. The resultant light amount monitoring signal indicates this information. Based on the two monitoring signals, a bias voltage selector selects an appropriate bias voltage that varies circuit parameters of the excitation circuit.Type: GrantFiled: December 10, 2002Date of Patent: October 5, 2004Assignee: Fujitsu LimitedInventors: Ken Atsumi, Hideyuki Matsuura, Yoshifumi Nakajima, Yoshito Koyama
-
Patent number: D991896Type: GrantFiled: April 21, 2021Date of Patent: July 11, 2023Assignee: Audio-Technica CorporationInventors: Hideyuki Matsuura, Yoshiya Watanabe, Jumpei Okamoto