Patents by Inventor Yoshitaka Uchida

Yoshitaka Uchida 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: 20060209855
    Abstract: A relay unit capable of inquiring of a DNS comprises: an inquiry section which transfers an acquisition request of a transmission destination terminal address, sent from a transmission source terminal, to the DNS, and acquires the transmission destination terminal address and a transmission destination label corresponding to the transmission destination terminal address and transmission destination terminal; a label creation section which creates a unique relay label; a label storage section which correlates the created relay label to the acquired transmission destination terminal address and transmission destination label, and stores thus obtained label; a label transmission section which transmits the relay label and a private address of the relay unit to the transmission source terminal; and a determination section which, if a packet containing the relay label is received from the transmission source terminal, determines that the transmission destination terminal address and transmission destination label
    Type: Application
    Filed: February 8, 2006
    Publication date: September 21, 2006
    Applicant: NTT DoCoMo, Inc.
    Inventors: Yoshitaka Uchida, Norihiro Ishikawa
  • Publication number: 20050236224
    Abstract: A microphone assembly fitted to a panel of a vehicle-mounted control module, provided with a housing for housing a microphone and having an opening section on a surface facing the panel, and a holding case for holding the housing so as to be capable of pivoting, and when inserted into a receptacle provided in the panel the housing pivots so as to seal the opening section to the panel.
    Type: Application
    Filed: December 9, 2004
    Publication date: October 27, 2005
    Inventors: Seiichiro Mizoguchi, Yoshitaka Uchida
  • Publication number: 20050153835
    Abstract: Disclosed is a reforming-catalyst composition, which comprises nickel oxide and lanthanum oxide as a catalytic material for inducing a reaction between stream and either one of methane, natural gas and town gas to produce a hydrogen-containing gas. The nickel oxide and lanthanum oxide are formed as a perovskite-structured compound partly or in their entirety. The reforming-catalyst composition may include an oxide consisting of either one of alumina, silica and zirconia, on which the perovskite-structured compound is formed to serve as a catalyst carrier. Further, the reforming-catalyst composition may include nickel or ruthenium supported by aforesaid catalyst carrier consisting of the perovskite-structured compound. The reforming-catalyst composition of the present invention allows highly concentrated hydrogen to be produced at a low S/C ratio in steam reforming of methane, natural gas or town gas, while maintaining catalytic activity over a long time-period.
    Type: Application
    Filed: March 28, 2003
    Publication date: July 14, 2005
    Inventors: Yoshitaka Uchida, Keigo Tsujimoto
  • Patent number: 6366603
    Abstract: A spread spectrum communication system including a transmission side for transmitting a frame-structured transmission signal containing at least one preamble (having information on a transmission destination) and data subsequent to the preamble(s) while spread-spectrum-modulating the transmission signal with a PN code, and a reception side having a correlator for performing correlation between the PN code of the transmission signal and a reference PN code and a PN code generator for generating the reference PN code. At the reception side, the PN code of the preamble of the transmission signal and the reference PN code are correlated with each other to obtain correlation peaks, and the periodicity of the correlation peaks is detected and a prescribed number of correlation peaks is counted, thereby identifying the transmission signal as being addressed to the receiver.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: April 2, 2002
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Takeshi Hashimoto, Katsuo Onozaki
  • Patent number: 6237341
    Abstract: A boiler scale collecting device enables collecting and recovery of most boiler scale particulates (p) in a steam flow line (f) in a steam pipe (02) extending from a power generation steam boiler to an inlet (01′) of a power generation steam turbine (01). The steam pipe (02), of constant inner diameter (d), extends from the boiler side to the inlet (01′) of the steam turbine (01), and turns at direction turning portion (e) from a vertical steam pipe (02′) to a lateral steam pipe (02″) near the inlet (01″) of the steam turbine (01). The vertical steam pipe (02′) is elongated beyond the direction turning portion (e) to form an elongated portion (02′a) having a lower end (02″a). The direction turning portion (e), including the vertical steam pipe (02′) and the lateral steam pipe (02″), and the elongated portion (02′a) are made in an integral unit of forged steel.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: May 29, 2001
    Assignees: Kyushu Electric Power Company, Mitsubishi Heavy Industries, Ltd.
    Inventors: Masami Koike, Yoshitaka Uchida, Akihiro Sato, Eisaku Nakashima, Toshihiro Sato, Keishi Suga, Masaharu Takada, Mutsuo Kuragasaki
  • Patent number: 6035111
    Abstract: According to the present invention, using a computer aided design system for designing semiconductor integrated circuits wherein a plurality of logic cells forming a circuit net are disposed on a semiconductor chip according to a net list specifying a connection pattern assigned among input and output terminals of a plurality of logic cells and a wiring length connecting the terminals.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: March 7, 2000
    Assignees: Fujitsu Limited, Fujitsu VLSI Limited
    Inventors: Rieko Suzuki, Kiyoshi Saida, Kazushige Itazu, Eiji Fujine, Yoshihiro Kamiya, Yoshitaka Uchida, Takako Murakami, Teruhisa Tsuyuki, Kazunori Kawazoe, Takeshi Shimazaki, Yukimi Nishiwaki
  • Patent number: 5618744
    Abstract: According to the present invention, using a computer aided design system for designing semiconductor integrated circuits wherein a plurality of logic cells forming a circuit net are disposed on a semiconductor chip according to a net list specifying a connection pattern assigned among input and output terminals of a plurality of logic cells and a wiring length connecting the terminals.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: April 8, 1997
    Assignees: Fujitsu Ltd., Fujitsu VLSI Ltd.
    Inventors: Rieko Suzuki, Kiyoshi Saida, Kazushige Itazu, Eiji Fujine, Yoshihiro Kamiya, Yoshitaka Uchida, Takako Murakami, Teruhisa Tsuyuki, Kazunori Kawazoe, Takeshi Shimazaki, Yukimi Nishiwaki
  • Patent number: 5574754
    Abstract: A sliding correlator for initial synchronization and tracking of a SS (Spread Spectrum)-modulated signal containing a transmitted pseudo noise (PN) code, digitizes the received signal, and attempts to correlate the PN code in the received signal with a locally generated reference PN code. Initial synchronization employs correlation with three reference PN codes, an early, center and late channel. When correlation is found between the transmitted PN code and one of the reference PN codes, the three reference PN codes are shifted to align the center channel with the correlated channel and to displace the early and late channel reference PN codes to one side and the other of the center channel. In one embodiment, the displacement is one-third chip, and in another embodiment, the displacement is one-half chip.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: November 12, 1996
    Assignee: Clarion Co., Ltd.
    Inventors: Takao Kurihara, Yoshitaka Uchida, Masahiro Hamatsu
  • Patent number: 5291515
    Abstract: On the transmitter side, data to be transmitted are converted into a plurality of parallel data sets by a serial-parallel converter 101 and spread spectrum modulation is effected by means of PN code generators 105 and selectors 102. Each of the modulated outputs is delayed by a delaying circuit 103 with reference to a sounder channel and the phase thereof. The output thus delayed and the output of the sounder channel are added by an adder 104 to be multiplexed and transmitted.On the receiver side, correlation between a received signal and a reference signal is formed by a correlator 201 to obtain a correlation pulse from the correlation output thus obtained. Data demodulation is effected by means of a sounder detecting circuit 209, a sampling pulse generating circuit 210 and an information detecting circuit 211, starting from this correlation pulse.According to the structure described above, in SS communication, data demodulation can be effected with a high efficiency by using a single correlator.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: March 1, 1994
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Mamoru Endo, Masahiro Hamatsu, Shigeo Akazawa
  • Patent number: 5228055
    Abstract: On the transmitter side of a spread spectrum communication device according to the present invention, transmission date are converted into a plurality of parallel data sets by a serial-parallel convertor and spread-spectrum-modulation is effected by means of PN code generators and selectors. Different modulated outputs are delayed by delay devices, using a sounder channel and the phase thereof as a reference. The delayed outputs and the output of the sounder channel are added by an adder, multiplexed and transmitted.On the receiver side correlation of a received signal with a reference signal is formed by a correlator and a correlation pulse is obtained from the correlation output. Data are reproduced by means of a sounder detecting circuit, a sampling pulse generating circuit and an information detecting circuit.In this way data reproduction can be effected with a high efficiency by means of a single correlator.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: July 13, 1993
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Mamoru Endo, Masahiro Hamatsu, Shigeo Akazawa
  • Patent number: 5204877
    Abstract: In a spread spectrum modulating device according to the present invention transmission data are converted into parallel data by a serial-parallel converting circuit, which are held by a latch circuit and assign upper digit addresses.Lower digit addresses in the memory are assigned by a counter.Parallel data outputted by the memory are converted into analogue signals by a D/A converter, which analogue signals are multiplied by a carrier by a multiplier to obtain a spread spectrum signal.Owing to the construction described above, a simple and small scale construction can be realized for the spread spectrum modulating device.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: April 20, 1993
    Assignee: Clarion Co., Ltd.
    Inventors: Mamoru Endo, Yoshitaka Uchida
  • Patent number: 5195105
    Abstract: A spread spectrum receiver is disclosed, in which influences of narrow band disturbing waves are reduced by converting the output of a correlator into base band information and removing frequency components from DC to about 1/.tau. from the conversion output thus obtained, .tau. being the gate delay time of the correlator.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: March 16, 1993
    Assignee: Clarion Co., Ltd.
    Inventors: Takeshi Hashimoto, Yoshitaka Uchida
  • Patent number: 5168508
    Abstract: A spread spectrum receiver is disclosed, in which a spread spectrum received signal is separated into at least 3 frequency band channels; signal components in the different channels are compared in the magnitude; and the signal components in the different frequency bands are combined after having attenuated greater ones, in order to eliminate interference waves from the inputted signal.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: December 1, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Kenju Iwasaki, Yoshitaka Uchida
  • Patent number: 5148413
    Abstract: A device according to the present invention comprises a variable notch filter, a PN code generator, a VCO and a convolver. The frequency is swept within the band of the convolver by the VCO after having stopped operations of the variable notch filter and the PN code generator and the output of the convolver at this time is detected. When the output thus detected exceeds a threshold, a detected signal is sent to the variable notch filter to control the notch part thereof so as to correspond to disturbing wave to remove the disturbing wave from a received signal. Since the convolver is used not only for a correlator but also for a disturbing wave detector, the construction can be simple and cheap.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: September 15, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Mamoru Endo, Yoshitaka Uchida
  • Patent number: 5144641
    Abstract: A multiplex communication device by the spread spectrum communication system is disclosed, in which a reference signal and a plurality of information signals are multiplexed to be transmitted after having spreading-modulated each of them, and data demodulation for the plurality of information signals is effected on the basis of a correlation-demodulated reference signal by executing correlation operation of this multiplexed received signal with a reference signal by means of a single correlator.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: September 1, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Shigeo Akazawa, Yoshitaka Uchida
  • Patent number: 5144639
    Abstract: A spread-spectrum communication system uses a PN code which ensures that the side lobe of a self-correlation function represents zero on both parts of a sender and a receiver.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: September 1, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Takeshi Hashimoto
  • Patent number: 5138632
    Abstract: A correlation pulse generating circuit uses a delay circuit for delaying an output of an absolute value detecting circuit corresponding to an A/D-converted output of a correlation spike, so that amplitude information of a current correlation spike can be used for detection of the correlation spike.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: August 11, 1992
    Assignee: Clarion Co., Ltd.
    Inventor: Yoshitaka Uchida
  • Patent number: 5132985
    Abstract: A spread spectrum receiver has first and second correlators which each compare a received signal with a respective reference signal. The output of each correlator is routed through a respective band pass filter and a respective AGC amplifier to a respective detector circuit which converts the output of the amplifier into a respective base band signal. The ouput of each detector circuit is supplied to a respective peak value detecting and holding section, which detects and holds for a predetermined time period peak values from the associated detector circuit. Each peak value detecting and holding circuit supplies the peak value currently held therein through a respective low pass filter which serves as an integrator to a data comparing section and to an adding section. The adding section adds the two peak values, and supplies the sum to control inputs of each of the AGC amplifiers for purposes of gain control.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: July 21, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Takeshi Hashimoto, Yoshitaka Uchida
  • Patent number: 5081644
    Abstract: A spread spectrum communication (SSC) receiving device is disclosed, in which a received signal consisting of an SSC signal in the SSC signal band and disturbance wave is divided into an upper side band and a lower side band; electric powers of the signal in the upper side band and the signal in the lower side band are compared with each other; and the SSC signal in the upper side band or in the lower side band, where there exists no disturbance wave, is outputted according to the result of the comparison.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: January 14, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Takeshi Hashimoto
  • Patent number: 4965759
    Abstract: A correlation pulse generator used in a receiver of a spread spectrum communication system comprises peak hold circuit for holding peak values of positive and negative correlation spikes, threshold setting circuits for generating thresholds based on the peak values, and a comparing circuit for comparing the threshold with a correlation spike to generate a correlation pulse, so that when a level difference exists between positive and negative correlation spike levels of a correlation output, their peaks can be held independently, and thresholds based on the peaks can be generated independently.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: October 23, 1990
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Masahiro Hamatsu, Masaharu Mori