Patents by Inventor Atsushi Yokoyama
Atsushi Yokoyama 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).
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Publication number: 20050065696Abstract: A brake device includes an actuator which is provided on a wheel side of a vehicle having a suspension, the actuator generates a braking force by being electrically driven. A drive controller is also provided for receiving a signal regarding the braking force from a vehicle motion controller and sensors, and driving the actuator accordingly. To reduce the number of high cost bending wires necessary to communicate between the sensors, the drive controller and the vehicle motion controller, the drive controller and the sensors are attached to the actuator side (unspring-mass).Type: ApplicationFiled: October 5, 2004Publication date: March 24, 2005Inventors: Atsushi Yokoyama, Takaomi Nishigaito, Yuzo Kadomukai, Masanori Ichinose, Kenichiro Matsubara, Toshio Manaka, Nobuyuki Ueki
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Patent number: 6854813Abstract: An electrically driven brake device includes a plurality of brake actuators for generating braking force when driven electrically, a power supply source for storing electric energy and supplying power to the brake actuators, a power source line for connecting the power supply source and the brake actuators, and a power breaker at a position of the power source line at which the brake actuators can be insulated and separated into at least two systems.Type: GrantFiled: January 17, 2002Date of Patent: February 15, 2005Assignee: Hitachi, Ltd.Inventors: Atsushi Yokoyama, Takaomi Nishigaito, Yuzo Kadomukai, Masanori Ichinose, Kenichiro Matsubara, Nobuyuki Ueki, Toshio Manaka
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Publication number: 20050004991Abstract: A communication terminal for providing broadcast communication using electronic mail via a network. The communication terminal includes a storing unit configured to store an entry including a mail address and a function mode corresponding to the mail address in an electronic directory, a determining unit configured to determine, based on the entry in the electronic directory, a function mode of a receiver communication terminal, and a transmitting unit configured to transmit image information in a form of broadcast mail to the receiver communication terminal when the determined function mode is a first mode, and to transmit image information in a form of individual mail to the receiver communication terminal when the determined function mode is a second mode.Type: ApplicationFiled: June 16, 2004Publication date: January 6, 2005Inventor: Atsushi Yokoyama
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Publication number: 20040239590Abstract: An ALIS system PDP apparatus in which a reduction in the variation in luminance due to ringing has been reduced is disclosed. In an ALIS system PDP apparatus, X (first) electrodes and Y (second) electrodes are arranged in such a way that the X electrodes and the Y electrodes, whose path length, which is the length of each of the signal paths of a sustain discharge pulse from the X and Y electrode to sustain drive circuits, is longer or shorter than that of the peripheral X and Y electrodes, do not exist densely. Specifically, the order of arrangement of the odd and even X sustain drive circuits is reversed to that of odd and even Y sustain drive circuits.Type: ApplicationFiled: March 10, 2004Publication date: December 2, 2004Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Ken Kumakura, Yoshikazu Kanazawa, Hideaki Ohki, Takashi Fujisaki, Atsushi Yokoyama
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Patent number: 6826496Abstract: Circuitry for detecting tonal signals, each of which has a particular nature in the frequency or time domain, while distinguishing them from each other. A rough frequency analyzer roughly analyzes an input signal in an entire frequency band with lower accuracy in the frequency or time domain, thereby roughly distinguishing the tonal signals. Detectors, each of which is associated with a subband occupied by a particular target tonal signal, detect the attribute of the power variation of the target tonal signal with respect to time with higher accuracy in the direction of the frequency or time domain to thereby finely identify the target tonal signal. A controller selectively enables and disables the detectors in accordance with the results from the detectors. One of the detectors is enabled which is selected under the control of the controller.Type: GrantFiled: November 28, 2001Date of Patent: November 30, 2004Assignee: Oki Electric Industry Co., Ltd.Inventors: Nobuyuki Yamaguchi, Hiromi Aoyagi, Atsushi Yokoyama, Kazuyoshi Akie
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Publication number: 20040212250Abstract: An electrically driven brake device includes a plurality of brake actuators for generating braking force when driven electrically, a power supply source for storing electric energy and supplying power to the brake actuators, a power source line for connecting the power supply source and the brake actuators, and a power breaker at a position of the power source line at which the brake actuators can be insulated and separated into at least two systems.Type: ApplicationFiled: May 20, 2004Publication date: October 28, 2004Inventors: Atsushi Yokoyama, Takaomi Nishigaito, Yuzo Kadomukai, Masanori Ichinose, Kenichiro Matsubara, Nobuyuki Ueki, Toshio Manaka
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Patent number: 6810316Abstract: A brake device includes an actuator which is provided on a wheel side of a vehicle having a suspension, the actuator generates a braking force by being electrically driven. A drive controller is also provided for receiving a signal regarding the braking force from a vehicle motion controller and sensors, and driving the actuator accordingly. To reduce the number of high cost bending wires necessary to communicate between the sensors, the drive controller and the vehicle motion controller, the drive controller and the sensors are attached to the actuator side (unspring-mass) and the drive controllercommunicates with the vehicle motion controller provided on the vehicle body side (spring-mass) of the vehicle by bidirectional multiplex communication.Type: GrantFiled: February 7, 2002Date of Patent: October 26, 2004Assignee: Hitachi, Ltd.Inventors: Atsushi Yokoyama, Takaomi Nishigaito, Yuzo Kadomukai, Masanori Ichinose, Kenichiro Matsubara, Toshio Manaka, Nobuyuki Ueki
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Patent number: 6801653Abstract: The invention provides an image processing apparatus and method as well as a medium by which a corresponding point can be found out and matching between images can be performed with a higher degree of accuracy. A template deformation section produces a plurality of deformed templates by linear interpolation from a template inputted thereto from a template setting section and inputs the deformed templates to a plurality of matching operation sections. The matching operation sections use an image of an epipolar line from among reference images stored in image memories and the deformed templates to perform template matching on the epipolar line. Selection sections determine one of the deformed templates which exhibits the highest similarity degree from results of the template matching and determine coordinate values then as a parallax.Type: GrantFiled: July 27, 2000Date of Patent: October 5, 2004Assignee: Sony CorporationInventors: Weiguo Wu, Teruyuki Ushiro, Takayuki Yoshigahara, Atsushi Yokoyama
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Patent number: 6800827Abstract: A method for laser-assisted separation and enrichment of silicon isotopes such as 28Si, 29Si and 30Si on the basis of infrared multiple-photon dissociation of silicon halides represented by Si2F6, wherein the silicon halides are irradiated synchronously with multiple infrared pulsed laser beams at different wavelengths.Type: GrantFiled: August 7, 2002Date of Patent: October 5, 2004Assignees: Japan Atomic Energy Research Institute, Nuclear Development CorporationInventors: Atsushi Yokoyama, Hironori Ohba, Masashi Hashimoto, Takemasa Shibata, Shigeyoshi Arai, Takeshi Ishii, Akio Ohya
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Patent number: 6799161Abstract: A speech coding apparatus having a speech input unit for receiving input speech, a speech coding rate selector for selecting an appropriate speech coding rate according to the power of the input speech, a speech analyzer for processing the input speech to estimate a transfer function of the speaker's oral cavity, and a speech coding unit forming a synthesis filter based on the transfer function of the oral cavity. The speech coding unit also codes an excitation signal of the synthesis filter on the basis of an estimation result supplied by the speech analyzer. A gain suppressor interposed between the speech input unit and the speech coding unit suppresses the gain of a signal supplied from the speech input unit to the speech coding unit during an unvoiced period according to information from the speech coding rate selector.Type: GrantFiled: January 15, 2002Date of Patent: September 28, 2004Assignee: Oki Electric Industry Co., Ltd.Inventor: Atsushi Yokoyama
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Publication number: 20040160122Abstract: A power-supply unit for automobiles, connected to an electrically-driven brake device which generates braking forces by being electrically driven, an electric generator capable of generating braking forces for a vehicle by power generation, and a storage device for storing electric power, the power-supply unit comprising a first power supply line for connecting the electric generator with the storage device, a second power supply line for connecting the first power supply line with the electrically-driven brake device, and power-source connection means provided on the second power supply line and have interrupting function.Type: ApplicationFiled: July 29, 2003Publication date: August 19, 2004Inventors: Atsushi Yokoyama, Kenichiro Matsubara, Takaomi Nishigaito, Nobuyuki Ueki, Toshio Manaka
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Patent number: 6747410Abstract: A discharge type display apparatus for displaying images through discharges in a discharge gas enclosed in discharge spaces of the apparatus. The discharge gas is a mixed gas including at least Xe, He and Ne. A mixed ratio of He to Ne in the gas mixture is set approximately for 50% in volume at most.Type: GrantFiled: August 24, 1999Date of Patent: June 8, 2004Assignee: Hitachi, Ltd.Inventors: Atsushi Yokoyama, Keizo Suzuki, Takahisa Mizuta, Akitsuna Yuhara, Masaji Ishigaki
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Patent number: 6744441Abstract: A texture picture with a highest resolution is selected among a plurality of pictures taken from different points of view for each patch surface, and texture mapping is carried out by pasting a texture picture selected for a patch surface on the patch surface. Then, processing is carried out to correct differences in concentration, which are caused by differences in beam-source condition, between pictures or between patch surfaces. As the correction processing, inter-frame picture-concentration-value correction, inter-patch texture-picture-shift correction and inter-patch boundary concentration smoothing correction are performed to allow texture mapping with a high picture quality to be carried out to produce a three-dimensional picture having a high quality. It is thus possible to provide a texture mapping technique capable of producing a three-dimensional picture having a high picture quality.Type: GrantFiled: July 3, 2001Date of Patent: June 1, 2004Assignee: Sony CorporationInventors: Weiguo Wu, Atsushi Yokoyama, Hiroyuki Sato
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Patent number: 6728614Abstract: A power supply system for a vehicle is provided which is able to supply an electric brake apparatus with necessary power even if an abnormal condition occurs in a battery or a conductor which is connected to the electric brake apparatus. A relay control unit 12 normally brings a relay 11 in a state in which its input terminal is connected to an A terminal 13. This causes a generator 50 or main battery 20 to supply an electric brake apparatus 100 with power via first and second power supply lines 40 and 41 and charges an auxiliary battery 21. If an abnormal condition occurs at main and auxiliary batteries 20 and 21, main and auxiliary power supply lines 30 and 31, first and second power supply lines 40 and 41, the relay control unit 12 brings the relay 21 into a state in which its input terminal is connected to A or B terminal 13 or 14 in response to the abnormal condition.Type: GrantFiled: June 13, 2003Date of Patent: April 27, 2004Assignee: Hitachi, Ltd.Inventors: Kenichiro Matsubara, Atsushi Yokoyama, Toshio Manaka, Nobuyuki Ueki
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Publication number: 20040013245Abstract: The voice storage device of the invention includes a storage means that stores a voice signal, and a voice compression means that compresses the voice signal requiring a re-coding compression, of the voice signal stored in the storage means, in accordance with a compression degree and a significance of the voice signal.Type: ApplicationFiled: July 15, 2003Publication date: January 22, 2004Applicant: Oki Electric Industry Co., Ltd.Inventor: Atsushi Yokoyama
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Publication number: 20030233179Abstract: A power supply system for a vehicle is provided which is able to supply an electric brake apparatus with necessary power even if an abnormal condition occurs in a battery or a conductor which is connected to the electric brake apparatus. A relay control unit 12 normally brings a relay 11 in a state in which its input terminal is connected to an A terminal 13. This causes a generator 50 or main battery 20 to supply an electric brake apparatus 100 with power via first and second power supply lines 40 and 41 and charges an auxiliary battery 21. If an abnormal condition occurs at main and auxiliary batteries 20 and 21, main and auxiliary power supply lines 30 and 31, first and second power supply lines 40 and 41, the relay control unit 12 brings the relay 21 into a state in which its input terminal is connected to A or B terminal 13 or 14 in response to the abnormal condition.Type: ApplicationFiled: June 13, 2003Publication date: December 18, 2003Inventors: Kenichiro Matsubara, Atsushi Yokoyama, Toshio Manaka, Nobuyuki Ueki
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Publication number: 20030218580Abstract: A method for driving a PDP is disclosed, and is capable of suppressing an erroneous discharge during an address discharge and sustain discharge and of preventing deterioration in image quality, comprising: a reset period for initialization; an address period having a first half of the address period in which one of odd-numbered and even-numbered second electrodes are first scanned sequentially, and address pulses are applied to third electrodes, and a subsequent second half of the address period in which others of the odd-numbered and the even-numbered second electrodes are scanned sequentially, and address pulses are applied to the third electrodes; and a sustain discharge period in which sustain discharges are caused to occur, wherein the potential difference between the second electrode and the third electrode in the second half of the address period is set to a value larger than the potential difference between the second electrode and the third electrode in the first half of the address electrode.Type: ApplicationFiled: January 31, 2003Publication date: November 27, 2003Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Atsushi Yokoyama, Yoshikazu Kanazawa, Satoru Nishimura
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Patent number: 6637836Abstract: The solenoid current increases at low temperatures and decreases at high temperatures because the modulus of elasticity of an elastically deformable valve body and the slide resistance of an elastically deformable seal member vary with temperatures. Therefore the solenoid current for opening the valve mechanism from a closed position is required to be changed with low and high temperatures. To supply the solenoid current necessary for opening the valve mechanism without directly measuring the temperature, the solenoid current (the boost starting current leaning value) indicated when the pressure varies with the opening of the valve mechanism is recorded at the time of pressure-increasing, and thereafter when the valve mechanism is opened again after the closing of the valve mechanism, the solenoid current computed on the basis of the pressure-increase starting current learning value thus recorded is supplied.Type: GrantFiled: September 25, 2001Date of Patent: October 28, 2003Assignee: Hitachi, Ltd.Inventors: Satoru Kuragaki, Tokuji Yoshikawa, Atsushi Yokoyama, Toshio Manaka
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Patent number: 6608441Abstract: A plasma display panel has a good productivity of partition formation and air exhaustion process and realizes a bright and stable display. A discharge gas is filled in a gap between two substrates. A mesh-patterned partition is arranged on the inner surface of one of the substrates for dividing the gap into plural squares corresponding to a cell arrangement. The partition has low portions forming a mesh-like air path that travels through all of the gas-filled space enclosed by the partition, in a plan view.Type: GrantFiled: February 8, 2001Date of Patent: August 19, 2003Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Yasuhiko Kunii, Masayuki Shibata, Yoshimi Kawanami, Kenichi Yamamoto, Atsushi Yokoyama, Yusuke Yajima, Shinji Kanagu, Yasuhiro Wakabayashi, Akihiro Fujimoto, Toshiyuki Nanto
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Publication number: 20030105624Abstract: A speech coding rate selector includes: a speech input unit for receiving an input speech; a short-term power arithmetic unit for computing the power of an input speech at a predetermined time unit; an ambient noise power estimating unit for estimating the power of an ambient noise superimposed on an input speech; a rate selection threshold value arithmetic unit for computing a group of power threshold values for selecting a speech coding rate; a power comparator for selecting one appropriate rate from among a plurality of speech coding rates; an ambient noise property inferring unit for inferring the property of an ambient noise superimposed on an input speech; and a comparison power corrector for correcting an output value of the short-term power arithmetic unit if an ambient noise, the property of which has been inferred by the ambient noise property inferring unit, proves to exhibit a considerable time-dependent change in power.Type: ApplicationFiled: January 15, 2002Publication date: June 5, 2003Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventor: Atsushi Yokoyama