Patents by Inventor Kimitake Utsunomiya
Kimitake Utsunomiya 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: 10923962Abstract: In a non-contact power feeding system which is formed with a power transmission device having a power transmission-side resonant circuit including a power transmission-side coil and a power reception device having a power reception-side resonant circuit including a power reception-side coil and which can transmit and receive power by a magnetic field resonance method, when the power is transmitted, the power transmission device monitors the amplitude of a current flowing through the power transmission-side coil. Then, when a current amplitude detection value (VmFOD) falls outside a predetermined normal range, it is determined that a foreign object is present, and thus the power transmission is stopped.Type: GrantFiled: July 5, 2016Date of Patent: February 16, 2021Assignee: ROHM CO., LTD.Inventors: Yoshihiro Ikefuji, Akihiro Okui, Kimitake Utsunomiya
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Publication number: 20180205255Abstract: In a non-contact power feeding system which is formed with a power transmission device having a power transmission-side resonant circuit including a power transmission-side coil and a power reception device having a power reception-side resonant circuit including a power reception-side coil and which can transmit and receive power by a magnetic field resonance method, when the power is transmitted, the power transmission device monitors the amplitude of a current flowing through the power transmission-side coil. Then, when a current amplitude detection value (VmFOD) falls outside a predetermined normal range, it is determined that a foreign object is present, and thus the power transmission is stopped.Type: ApplicationFiled: July 5, 2016Publication date: July 19, 2018Applicant: Rohm Co., Ltd.Inventors: Yoshihiro IKEFUJI, Akihiro OKUI, Kimitake UTSUNOMIYA
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Publication number: 20120176085Abstract: A remote wireless driving charger includes: a transmitter; a primary side resonance capacitor connected to the transmitter; a primary coil which is connected to the primary side resonance capacitor and is tuned to be resonant with the primary side resonance capacitor in a predetermined power carrier frequency band; a secondary coil embedded in a portable device; and a secondary side resonance capacitor which is connected to the secondary coil and is tuned to be resonant with the secondary coil in the predetermined power carrier frequency band. Radioactive inductance components as micro loops of the primary coil and the secondary coil are cancelled out by the non-radioactive primary side resonance capacitor and secondary side resonance capacitor through an electromagnetic coupling between the primary coil and the secondary coil, and the portable device is remotely and wirelessly charged.Type: ApplicationFiled: January 4, 2012Publication date: July 12, 2012Applicant: ROHM CO., LTD.Inventors: Jun IIDA, Kimitake UTSUNOMIYA
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Publication number: 20120170323Abstract: A charging AC adaptor includes: a first diode bridge connected to an AC terminal; a chopper controller connected to the first diode bridge; an insulating air core transformer connected to the chopper controller; a second diode bridge connected to a secondary side of the insulating air core transformer; a DC output terminal connected to the second diode bridge; and a common connection cable connected to the DC output terminal. The charging AC adaptor is connectable to a portable device via the common connection cable.Type: ApplicationFiled: January 4, 2012Publication date: July 5, 2012Applicant: ROHM CO., LTD.Inventors: Jun IIDA, Hiroyuki HATANO, Kimitake UTSUNOMIYA
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Patent number: 7333155Abstract: A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation circuit includes an I, Q demodulation and a post Nyquist filter.Type: GrantFiled: June 5, 2003Date of Patent: February 19, 2008Assignee: RfStream CorporationInventors: Takatsugu Kamata, Kimitake Utsunomiya
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Patent number: 7327406Abstract: A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.Type: GrantFiled: October 16, 2002Date of Patent: February 5, 2008Assignee: RFStream CorporationInventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20070229716Abstract: A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.Type: ApplicationFiled: January 30, 2007Publication date: October 4, 2007Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20070165143Abstract: A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.Type: ApplicationFiled: January 30, 2007Publication date: July 19, 2007Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20070126937Abstract: A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal to an intermediate frequency (IF) television signal that has a low fundamental frequency. In one embodiment, the SAWF filter performs the SAW filter function on the IF television signal. In another embodiment, the SAWF filter performs the SAW filter function at baseband. An IF processor for processing the IF television signal to generate a video television signal and an audio television signal is disclosed.Type: ApplicationFiled: January 30, 2007Publication date: June 7, 2007Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Patent number: 7199844Abstract: A television demodulator circuit, for use in a television receiver, generates baseband video and audio outputs from a television signal, such as an intermediate frequency television signal. The I, Q demodulator circuit mixes the television signal with an in-phase (“I”) local oscillator signal and a quadrature phase (“Q”) local oscillator signal at the tuned frequency to generate baseband I and Q signals. The baseband I and Q signals are input to low pass filters and a Nyquist slope filter. The Nyquist slope filter generates, for the baseband I and Q signals, a Nyquist slope response and attenuates channels adjacent to the tuned television channel. The Nyquist slope filter comprises a transfer function with at least two zero crossings, so as to provide a notch filter response for attenuation of a television channel adjacent to the tuned television channel.Type: GrantFiled: September 30, 2002Date of Patent: April 3, 2007Assignee: RfStream CorporationInventors: Kimitake Utsunomiya, Takatsugu Kamata
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Patent number: 7116961Abstract: An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filter has two sub-circuits, wherein the first sub-circuit produces the imaginary component of the transfer function, and the second sub-circuit produces the real component of the transfer function. The first sub-circuit receives the Q signal, and the second sub-circuit receives the I signal. In one embodiment, to create the fractional transfer function, a multi-feedback looped integrator is used.Type: GrantFiled: May 29, 2003Date of Patent: October 3, 2006Assignee: RfStream CorporationInventors: Takatsugu Kamata, Kimitake Utsunomiya
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Patent number: 7102465Abstract: An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The inductors and capacitors are selectively enabled so as to configure an LC filter with at least one inductor from the L bank and at least one capacitor from the C bank. A combination of inductors and capacitors are selected through the semiconductor switches so as to maximize a Q factor for the LC filter.Type: GrantFiled: January 21, 2005Date of Patent: September 5, 2006Assignee: RfStream CorporationInventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20050190013Abstract: An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The inductors and capacitors are selectively enabled so as to configure an LC filter with at least one inductor from the L bank and at least one capacitor from the C bank. A combination of inductors and capacitors are selected through the semiconductor switches so as to maximize a Q factor for the LC filter.Type: ApplicationFiled: January 21, 2005Publication date: September 1, 2005Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20050143039Abstract: An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filter has two sub-circuits, wherein the first sub-circuit produces the imaginary component of the transfer function, and the second sub-circuit produces the real component of the transfer function. The first sub-circuit receives the Q signal, and the second sub-circuit receives the I signal. In one embodiment, to create the fractional transfer function, a multi-feedback looped integrator is used.Type: ApplicationFiled: May 29, 2003Publication date: June 30, 2005Inventors: Takatsugu Kamata, Kimitake Utsunomiya
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Patent number: 6882245Abstract: An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The inductors and capacitors are selectively enabled so as to configure an LC filter with at least one inductor from the L bank and at least one capacitor from the C bank. A combination of inductors and capacitors are selected through the semiconductor switches so as to maximize a Q factor for the LC filter.Type: GrantFiled: October 15, 2002Date of Patent: April 19, 2005Assignee: RF Stream CorporationInventors: Kimitake Utsunomiya, Takatsugu Kamata
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Patent number: 6750734Abstract: A receiver, such as a television receiver, tunes an inductive (“L”) and capacitive (“C”) filter based on a desired frequency. The LC filter includes a plurality of inductors, configured in at least one inductive (“L”) bank, and a plurality of capacitors configured in at least one capacitive (“C”) bank. The inductors are selectively enabled for the LC filter by an N code, and the capacitors are selectively enabled for the LC filter by an M code. The receiver uses a functional comparator to compare offset, capacitive, inductive and frequency values to tune the LC filter. Techniques for tuning the LC filter for operation in the VHF and UHF bands are disclosed.Type: GrantFiled: October 15, 2002Date of Patent: June 15, 2004Assignee: Ukom, Inc.Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20040095513Abstract: A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation circuit includes an I, Q demodulation and a post Nyquist filter.Type: ApplicationFiled: June 5, 2003Publication date: May 20, 2004Inventors: Takatsugu Kamata, Kimitake Utsunomiya
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Publication number: 20030227343Abstract: A receiver, such as a television receiver, tunes an inductive (“L”) and capacitive (“C”) filter based on a desired frequency. The LC filter includes a plurality of inductors, configured in at least one inductive (“L”) bank, and a plurality of capacitors configured in at least one capacitive (“C”) bank. The inductors are selectively enabled for the LC filter by an N code, and the capacitors are selectively enabled for the LC filter by an M code. The receiver uses a functional comparator to compare offset, capacitive, inductive and frequency values to tune the LC filter. Techniques for tuning the LC filter for operation in the VHF and UHF bands are disclosed.Type: ApplicationFiled: October 15, 2002Publication date: December 11, 2003Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20030227354Abstract: An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The inductors and capacitors are selectively enabled so as to configure an LC filter with at least one inductor from the L bank and at least one capacitor from the C bank. A combination of inductors and capacitors are selected through the semiconductor switches so as to maximize a Q factor for the LC filter.Type: ApplicationFiled: October 15, 2002Publication date: December 11, 2003Inventors: Kimitake Utsunomiya, Takatsugu Kamata
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Publication number: 20030223017Abstract: A television demodulator circuit, for use in a television receiver, generates baseband video and audio outputs from a television signal, such as an intermediate frequency television signal. The I, Q demodulator circuit mixes the television signal with an in-phase (“I”) local oscillator signal and a quadrature phase (“Q”) local oscillator signal at the tuned frequency to generate baseband I and Q signals. The baseband I and Q signals are input to low pass filters and a Nyquist slope filter. The Nyquist slope filter generates, for the baseband I and Q signals, a Nyquist slope response and attenuates channels adjacent to the tuned television channel. The Nyquist slope filter comprises a transfer function with at least two zero crossings, so as to provide a notch filter response for attenuation of a television channel adjacent to the tuned television channel.Type: ApplicationFiled: September 30, 2002Publication date: December 4, 2003Inventors: Kimitake Utsunomiya, Takatsugu Kamata