Patents by Inventor Takahide Terada
Takahide Terada 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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Patent number: 9209519Abstract: An electromagnetic wave propagation apparatus has a planar propagation medium including a planar conductor, a first planar dielectric, a planar mesh conductor, and a second planar dielectric being overlaid on each other in order; at least one electromagnetic wave input port for the planar propagation; a power supply station that supplies the planar propagation medium with an electromagnetic wave via at least one electromagnetic wave input port; and at least one power receiving apparatus for a second planar dielectric of the planar propagation medium that includes an electromagnetic wave interface and a power receiving circuit. A dielectric board has multiple conductor patterns as the electromagnetic wave interface. At least one connection means is between the conductor pattern and the power receiving circuit. At least one short-circuit means between the conductor patterns is at an end of the conductor pattern.Type: GrantFiled: July 12, 2012Date of Patent: December 8, 2015Assignee: HITACHI, LTD.Inventors: Hiroshi Shinoda, Takahide Terada, Kazunori Hara
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Patent number: 9148232Abstract: In order to provide a communication system which performs a communication while maintaining high voltage insulation, a control circuit which is operated at a low voltage, and a controlled circuit which is operated at a high voltage are connected through a propagation layer having a waveguide structure, thereby performing a communication. In particular, a displacement current (surge current) flows between a high voltage circuit and a low voltage circuit due to a potential fluctuation which occurs in the high voltage circuit A surge current protection circuit is provided, and applying an input which is out of rating to the communication module and the low voltage circuit due to such a surge current is prevented.Type: GrantFiled: December 27, 2010Date of Patent: September 29, 2015Assignee: Hitachi, Ltd.Inventors: Keisuke Yamamoto, Hiroshi Shinoda, Takahide Terada, Junichi Sakano, Kohei Onda
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Publication number: 20150008767Abstract: Provided is an insulated transmission medium which transmits electromagnetic energy between circuits having different reference potentials and has high insulation reliability. In order to realize the insulated transmission medium with a low loss, a small size, and a low cost, the insulated transmission medium according to the present invention is an insulated transmission medium which transmits the electromagnetic energy between a first circuit having a first reference potential and a second circuit having a second reference potential.Type: ApplicationFiled: March 30, 2012Publication date: January 8, 2015Inventors: Hiroshi Shinoda, Takahide Terada, Kazunori Hara
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Publication number: 20140354417Abstract: An electromagnetic wave propagation medium 1 extends in the propagation direction of an electromagnetic wave and has an electromagnetic wave propagation space sandwiched between conductors in the direction perpendicular to the electromagnetic wave propagation direction. A base unit 2 and multiple terminals 3 are placed on the electromagnetic wave propagation medium 1. When the position of a terminal 3 is detected, the base unit 2 transmits a position detection signal through the electromagnetic wave propagation medium 1 to the terminal 3. This position detection signal is attenuated more heavily during its propagation through the electromagnetic wave propagation medium 1 than a communication signal for use in normal communication is. The signal strength of the position detection signal drops as it moves away from the base unit 2. Hence the position of each terminal 3 can be detected based on the signal strength of the position detection signal received by each terminal 3.Type: ApplicationFiled: December 9, 2011Publication date: December 4, 2014Applicant: Hitachi, Ltd.Inventors: Takahide Terada, Hiroshi Shinoda, Kazunori Hara
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Patent number: 8892033Abstract: A wireless power transmission system includes a receiver and a transmitter. The transmitter includes: a power transmission unit that transmits power; a power adjustment unit that adjusts power to be transmitted; and a communication unit. The receiver includes: a power receiving unit that receives power; a power detection unit that detects the received power; a power storage unit that stores the received power; and a communication unit. The power to be transmitted is adjusted on the basis of power transmission efficiency and the remaining energy storage level. The power transmission efficiency is the ratio between the transmitted power and the received power.Type: GrantFiled: December 8, 2011Date of Patent: November 18, 2014Assignee: Hitachi, Ltd.Inventors: Takahide Terada, Hiroshi Shinoda, Keisuke Yamamoto
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Publication number: 20140167882Abstract: An electromagnetic wave propagation device includes multiple planar propagation media each formed by laminating at least one planar conductor and at least one planar dielectric, multiple transceivers for transmitting and receiving information among electronic apparatuses, and a first interface for transmitting and receiving the electromagnetic wave between the transceivers and the planar propagation media. Planar dielectric spacers are provided for isolating the multiple planar propagation media from one another. The planar propagation medium is disposed to have an overlapped part with at least the other of the planar propagation media so that an obverse face of the medium and a reverse face of the other medium are at least partially overlapped with each other. The planar conductor is provided with an electromagnetic wave linking unit at the overlapped part that transmits and receives the electromagnetic wave between the planar propagation media.Type: ApplicationFiled: July 11, 2011Publication date: June 19, 2014Applicant: HITACHI, LTD.Inventors: Hiroshi Shinoda, Takahide Terada, Kazunori Hara
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Publication number: 20140079963Abstract: The entire voltage of batteries is transmitted to a higher-ranking controller as information. The higher-ranking controller gives a discharge instruction or the like to a lower-ranking controller having a voltage higher than those of the other controllers. Thus, voltage variation of the respective batteries is balanced.Type: ApplicationFiled: August 22, 2013Publication date: March 20, 2014Applicant: Hitachi, Ltd.Inventors: Takashi TAKEUCHI, Masahiro MIURA, Takahide TERADA
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Publication number: 20130236189Abstract: In order to provide a communication system which performs a communication while maintaining high voltage insulation, a control circuit which is operated at a low voltage, and a controlled circuit which is operated at a high voltage are connected through a propagation layer having a waveguide structure, thereby performing a communication. In particular, a displacement current (surge current) flows between a high voltage circuit and a low voltage circuit due to a potential fluctuation which occurs in the high voltage circuit A surge current protection circuit is provided, and applying of an input which is out of rating to the communication module and the low voltage circuit due to such a surge current is prevented.Type: ApplicationFiled: December 27, 2010Publication date: September 12, 2013Inventors: Keisuke Yamamoto, Hiroshi Shinoda, Takahide Terada, Junichi Sakano, Kohei Onda
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Publication number: 20130229240Abstract: When a wavelength of an electromagnetic wave in an electromagnetic wave propagation space (4) is ?, and n is an integer, in a case where a first conductive layer (2) and a second conductive layer (3) are short-circuited in a first end surface (7b), the more distant an electromagnetic wave output interface (6) is from an electromagnetic wave input interface (5), the closer to a distance of ?/4+n·?/2 from the first end surface (7b) which is short-circuited the electromagnetic wave output interface is installed, and, in a case where the first conductive layer (2) and the second conductive layer (3) are not short-circuited in the first end surface (7b), the more distant the electromagnetic wave output interface (6) is from the electromagnetic wave input interface (5), the closer to a distance of n·?/2 from the first end surface (7b) which is not short-circuited the electromagnetic wave output interface is installed.Type: ApplicationFiled: March 14, 2011Publication date: September 5, 2013Inventors: Takahide Terada, Hiroshi Shinoda, Kazunori Hara
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Publication number: 20130147573Abstract: The disclosed electromagnetic wave transmission medium prevents electromagnetic leakage during high-power electromagnetic wave transmission. The sheet-form electromagnetic wave transmission medium is configured from a first mesh conductor used in transmission of electromagnetic waves having a first power; and a second mesh conductor used in transmission of electromagnetic waves having a second power. By using two mesh conductors, when said sheet-form electromagnetic wave transmission medium is used, the conduction density of the surface region where electromagnetic waves are extracted to be used for power supply assumes a coarser state than that of the other surface region.Type: ApplicationFiled: July 29, 2011Publication date: June 13, 2013Applicant: Hitachi, Ltd.Inventors: Keisuke Yamamoto, Hiroshi Shinoda, Takahide Terada
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Publication number: 20130014981Abstract: An electromagnetic wave propagation apparatus includes: a planar propagation medium including a planar conductor, a first planar dielectric, a planar mesh conductor, and a second planar dielectric being overlaid on each other in order; at least one electromagnetic wave input port provided for the planar propagation medium; a power supply station that supplies the planar propagation medium with an electromagnetic wave as electric power or information through the electromagnetic wave input port; and at least one power receiving apparatus provided for a second planar dielectric of the planar propagation medium and includes an electromagnetic wave interface and a power receiving circuit. A dielectric board is provided with multiple conductor patterns as the electromagnetic wave interface. At least one connection means is provided between the conductor pattern and the power receiving circuit. At least one short-circuit means between the conductor patterns is provided at an end of the conductor pattern.Type: ApplicationFiled: July 12, 2012Publication date: January 17, 2013Inventors: Hiroshi SHINODA, Takahide TERADA, Kazunori HARA
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Publication number: 20120217813Abstract: A storage battery system in which multiple storage battery modules are connected in series and such that deteriorated storage battery modules may be made replaceable without causing dielectric breakdown. The storage battery system is one that has multiple storage battery modules connected in series and has a mechanism of, when the storage battery module is detached, disconnecting power source line connected to the storage battery modules after disconnecting communication line connected to the storage battery modules.Type: ApplicationFiled: December 12, 2011Publication date: August 30, 2012Applicant: Hitachi, Ltd.Inventors: Takashi Takeuchi, Takahide Terada, Kenichi Osada
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Publication number: 20120149307Abstract: A wireless power transmission system includes a receiver and a transmitter. The transmitter includes: a power transmission unit that transmits power; a power adjustment unit that adjusts power to be transmitted; and a communication unit. The receiver includes: a power receiving unit that receives power; a power detection unit that detects the received power; a power storage unit that stores the received power; and a communication unit. The power to be transmitted is adjusted on the basis of power transmission efficiency and the remaining energy storage level. The power transmission efficiency is the ratio between the transmitted power and the received power.Type: ApplicationFiled: December 8, 2011Publication date: June 14, 2012Applicant: Hitachi, LtdInventors: Takahide Terada, Hiroshi Shinoda, Keisuke Yamamoto
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Patent number: 8054913Abstract: Power switches of circuits at respective stages of a low noise amplifier, demodulators, low-pass filers, variable gain amplifiers, and analog-to-digital converters are controlled to be off by an operation control unit in a non-reception period of an impulse signal. An increase in power consumption due to the adoption of an active filter or a variable gain amplifier is compensated for by a reduction in power consumption through intermittent operations of the circuits at the respective stages according to on and off control of the power switches.Type: GrantFiled: July 13, 2007Date of Patent: November 8, 2011Assignee: Renesas Electronics CorporationInventor: Takahide Terada
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Patent number: 7869548Abstract: In an ultra-wideband receiver for receiving discontinuous pulse signals and for demodulating the receive signals, an amplifier amplifies signals received, and a demodulator demodulates the amplified signals. A controller controls the demodulator and the amplifier based on the signals demodulated by the demodulator. The controller sends a signal to the amplifier to activate the amplifier only when the signals are received in order to decrease the power consumption in the amplifier. Further, the demodulator demodulates the amplified signals by generating a plurality of single pulses as template pulses, multiplies the amplified signals with the plurality of signal pulses, and integrates the multiplied signals to obtain demodulated data.Type: GrantFiled: January 27, 2005Date of Patent: January 11, 2011Assignee: Semiconductor Technology Academic Research CenterInventors: Takahide Terada, Shingo Yoshizumi, Tadahiro Kuroda
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Publication number: 20080069183Abstract: Power switches of circuits at respective stages of a low noise amplifier, demodulators, low-pass filers, variable gain amplifiers, and analog-to-digital converters are controlled to be off by an operation control unit in a non-reception period of an impulse signal. An increase in power consumption due to the adoption of an active filter or a variable gain amplifier is compensated for by a reduction in power consumption through intermittent operations of the circuits at the respective stages according to on and off control of the power switches.Type: ApplicationFiled: July 13, 2007Publication date: March 20, 2008Inventor: Takahide TERADA
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Publication number: 20070288995Abstract: To provide compact, low power consumption authenticating devices and authentication target device, and capable of simultaneous communication for acquiring an identifier, and acquiring distance information.Type: ApplicationFiled: April 17, 2007Publication date: December 13, 2007Inventors: Takahide Terada, Akira Maeki, Masayuki Miyazaki
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Publication number: 20050213635Abstract: In an ultra-wideband receiver for receiving discontinuous pulse signals and for demodulating the receive signals, an amplifier amplifies signals received, and a demodulator demodulates the amplified signals. A controller controls the demodulator and the amplifier based on the signals demodulated by the demodulator. The controller sends a signal to the amplifier to activate the amplifier only when the signals are received in order to decrease the power consumption in the amplifier. Further, the demodulator demodulates the amplified signals by generating a plurality of single pulses as template pulses, multiplies the amplified signals with the plurality of signal pulses, and integrates the multiplied signals to obtain demodulated data.Type: ApplicationFiled: January 27, 2005Publication date: September 29, 2005Applicant: Semiconductor Technology Academic Research CenterInventors: Takahide Terada, Shingo Yoshizumi, Tadahiro Kuroda