Patents by Inventor Atsuhito Terao
Atsuhito Terao 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: 20220252399Abstract: A composite sensor includes an angular velocity sensor that detects angular velocity about three axes independent of one another, a first acceleration sensor that detects acceleration in directions of these three axes, a second acceleration sensor that is disposed at a position away from the first acceleration sensor and detects acceleration in a direction of at least one axis, and a computation unit that corrects the angular velocity detected by the angular velocity sensor based on the accelerations detected by the first acceleration sensor and the second acceleration sensor.Type: ApplicationFiled: January 20, 2020Publication date: August 11, 2022Inventors: Atsuhito TERAO, Naoyuki TAKESUE, Masanori SEKIGUCHI
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Publication number: 20180236668Abstract: A carrier device includes a work part having a loading surface configured to have an object placed thereon, a base being movable, a support part supporting the work part movably with respect to the base, a detector provided at one of the work part and the base, and a controller, the detector is configured to detect a gravitational acceleration and a linear acceleration applied thereto. The controller is configured to control the support part so as to tilt the work part and linearly move the work part with respect to the base based on the gravitational acceleration and the linear acceleration. This carrier device prevents the object from falling down on the loading surface even while moving.Type: ApplicationFiled: October 26, 2016Publication date: August 23, 2018Inventors: TAKESHI UEMURA, ATSUHITO TERAO, KOUMEI FUJITA
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Patent number: 7555281Abstract: A level comparator supplied with oscillation signal of local oscillator for comparing the signal level of oscillation signal with a certain predetermined threshold value, and a driving section interposed between the output of level comparator and a control section are provided. When the level comparator recognized that the signal level exceeded the threshold value, it puts the driving section into operation for bringing the control section into action.Type: GrantFiled: September 13, 2006Date of Patent: June 30, 2009Assignee: Panasonic CorporationInventors: Takashi Umeda, Atsuhito Terao, Motoyoshi Kitagawa
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Publication number: 20090104885Abstract: A mixing device includes a mixing circuit and a ring oscillation circuit. The mixing circuit includes “M” mixers connected to the input terminal of the mixing device at one input. The ring oscillation circuit includes (2×M) inverters connected in series in a ring shape. The other input of the K-th mixer where “K” is a natural number of 1 to “M” balance-inputs an oscillation signal which is phase-shifted by (?K?/M) radian and outputted from the K-th inverter and an oscillation signal which is phase-shifted by (?(M+K)?/M) radian and outputted from the (M+K)th inverter. Between the output of the K-th mixer and the output terminal is provided a phase shifter having a phase shift amount of (?2?+K?/M) radian.Type: ApplicationFiled: July 6, 2007Publication date: April 23, 2009Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Atsuhito Terao
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Patent number: 7480496Abstract: A high-frequency receiver and a portable device using the same receiver are proposed for reducing power consumption. Image interference determiner (44) determines whether or not image interference exists at the present position in a desirable channel to be received, which channel is obtained by a receiving section (39) or a GPS receiver (43). Power supply control circuit (47) switches mixer (49) from an image rejection mixer to a double balance mixer when determiner (44) determines no image interference involves. This mechanism allows mixer (49) to work as the double balance mixer circuit during the reception of channels free from image interference, so that a mixer consuming less power is achievable. When mixer (49) works as the image rejection mixer circuit, image interference can be reduced.Type: GrantFiled: August 15, 2005Date of Patent: January 20, 2009Assignee: Panasonic CorporationInventors: Masaaki Noda, Atsuhito Terao, Sanae Asayama
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Patent number: 7418247Abstract: A radio-frequency (RF) receiver includes an input terminal for receiving RF signals in a first frequency band and a second frequency band lower than the first frequency band, a first tuned filter allowing a signal of a passing frequency in the RF signal in the first frequency band to pass through the filter, a local oscillator, a frequency divider for frequency-dividing a signal output from the local oscillator, a first mixer operable to convert the signal output from the first tuned filter into a signal of an intermediate frequency, a second tuned filter allowing a signal of a passing frequency of the RF signal in the second frequency band to pass through the filter, a second mixer operable to convert the signal output from the second tuned filter into a signal of the intermediate frequency, and a phase-locked-loop (PLL) circuit operable to control an oscillation frequency of the local oscillator and the passing frequencies of the first tuned filter and the second tuned filter.Type: GrantFiled: January 25, 2007Date of Patent: August 26, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Koji Nakatsuji, Masanori Suzuki, Atsuhito Terao
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Patent number: 7231192Abstract: A high frequency receiver of the present invention has a mixer of which one input part is connected to an output part of a filter and the other input part is connected to an output part of a frequency-variable local oscillator, and an output terminal connected to an output part of the mixer. The mixer is an image rejection mixer. The filter has a moderated damping characteristic in a frequency where the image rejection mixer reduces an image. Therefore, a high performance filter is not required, and hence a low price is realized.Type: GrantFiled: October 30, 2003Date of Patent: June 12, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masanori Suzuki, Koji Nakatsuji, Sanae Asayama, Atsuhito Terao, Kazutoshi Sato
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Publication number: 20070123186Abstract: A radio-frequency (RF) receiver includes an input terminal for receiving RF signals in a first frequency band and a second frequency band lower than the first frequency band, a first tuned filter allowing a signal of a passing frequency in the RF signal in the first frequency band to pass through the filter, a local oscillator, a frequency divider for frequency-dividing a signal output from the local oscillator, a first mixer operable to convert the signal output from the first tuned filter into a signal of an intermediate frequency, a second tuned filter allowing a signal of a passing frequency of the RF signal in the second frequency band to pass through the filter, a second mixer operable to convert the signal output from the second tuned filter into a signal of the intermediate frequency, and a phase-locked-loop (PLL) circuit operable to control an oscillation frequency of the local oscillator and the passing frequencies of the first tuned filter and the second tuned filter.Type: ApplicationFiled: January 25, 2007Publication date: May 31, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Koji Nakatsuji, Masanori Suzuki, Atsuhito Terao
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Patent number: 7215938Abstract: A radio-frequency (RF) receiver includes an input terminal for receiving RF signals in a first frequency band and a second frequency band lower than the first frequency band, a first tuned filter allowing a signal of a passing frequency in the RF signal in the first frequency band to pass through the filter, a local oscillator, a frequency divider for frequency-dividing a signal output from the local oscillator, a first mixer operable to convert the signal output from the first tuned filter into a signal of an intermediate frequency, a second tuned filter allowing a signal of a passing frequency of the RF signal in the second frequency band to pass through the filter, a second mixer operable to convert the signal output from the second tuned filter into a signal of the intermediate frequency, and a phase-locked-loop (PLL) circuit operable to control an oscillation frequency of the local oscillator and the passing frequencies of the first tuned filter and the second tuned filter.Type: GrantFiled: October 12, 2004Date of Patent: May 8, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Koji Nakatsuji, Masanori Suzuki, Atsuhito Terao
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Publication number: 20070060094Abstract: A level comparator supplied with oscillation signal of local oscillator for comparing the signal level of oscillation signal with a certain predetermined threshold value, and a driving section interposed between the output of level comparator and a control section are provided. When the level comparator recognized that the signal level exceeded the threshold value, it puts the driving section into operation for bringing the control section into action.Type: ApplicationFiled: September 13, 2006Publication date: March 15, 2007Inventors: Takashi Umeda, Atsuhito Terao, Motoyoshi Kitagawa
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Patent number: 7184733Abstract: An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator (56) of a high frequency receiving device, and the oscillation frequency changing means, in each frequency band received, changes the oscillation frequency characteristic of local oscillator (56) in relation to the tuning voltage supplied from PLL circuit (78), and operates in accordance with the frequency characteristic of tuning filter (52, 54, 62, 64) to obtain an oscillation signal varied just by a predetermined frequency, thereby making it possible to receive broadband channels of continuous VHF broadcast band and UHF broadcast band.Type: GrantFiled: June 24, 2004Date of Patent: February 27, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Koji Nakatsuji, Atsuhito Terao, Yoshihide Tabata, Hideji Takami, Masanori Suzuki, Hirochika Kashima
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Patent number: 7085547Abstract: A mixer circuit can suppress image interfering signals and interfering signals related to higher harmonic component of an oscillator. Using the mixer circuit, it is possible to provide a high-frequency signal receiver which maintains good signal receiving condition. This mixer circuit comprises a plurality of mixers, oscillators, a plurality of oscillator phase shifters which serve to phase-shift the output of the oscillators and supply the output to the mixers, and a plurality of intermediate frequency phase shifters which serve to phase-shift the output of the mixers. The high-frequency signal receiver comprises at least a pre-filter and the mixer circuit.Type: GrantFiled: November 25, 2003Date of Patent: August 1, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sanae Asayama, Atsuhito Terao
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Patent number: 7076230Abstract: A radio frequency apparatus comprising a printed circuit board mounting an electronic component including a coil as an inductance element, a metal frame body covering this printed circuit board and connected to the ground, a lid formed integrally with the frame body, covering the inductance element mounting side of the frame body, and a leg formed by cutting and bending from the lid, having a width nearly same as the width of the coil, in which the leg is disposed closely to the coil.Type: GrantFiled: October 15, 2003Date of Patent: July 11, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Nakatsuji, Hiroyuki Yamada, Noriko Asano, legal representative, Masanori Suzuki, Atsuhito Terao, Hiromasa Asano, deceased
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Publication number: 20060046678Abstract: A high-frequency receiver and a portable device using the same receiver are proposed for reducing power consumption. Image interference determiner (44) determines whether or not image interference exists at the present position in a desirable channel to be received, which channel is obtained by a receiving section (39) or a GPS receiver (43). Power supply control circuit (47) switches mixer (49) from an image rejection mixer to a double balance mixer when determiner (44) determines no image interference involves. This mechanism allows mixer (49) to work as the double balance mixer circuit during the reception of channels free from image interference, so that a mixer consuming less power is achievable. When mixer (49) works as the image rejection mixer circuit, image interference can be reduced.Type: ApplicationFiled: August 15, 2005Publication date: March 2, 2006Inventors: Masaaki Noda, Atsuhito Terao, Sanae Asayama
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Patent number: 6944431Abstract: An electronic tuner has an input terminal, a mixer receiving the signal fed into the input terminal, a matching circuit connected to an output of the mixer, a band-pass filter connected to an output of this matching circuit, an intermediate-frequency (IF) amplifier connected to an output of the band-pass filter, and an output terminal receiving output of the IF amplifier. These circuits are composed of balanced circuits and connected by balanced lines. The mixer has a high output impedance. For the matching circuit, the impedance of the matching circuit at the band-pass filter side is equal to the impedance of the band-pass filter at the matching circuit side. This structure can realize an electronic tuner having low power consumption.Type: GrantFiled: January 17, 2003Date of Patent: September 13, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masanori Suzuki, Atsuhito Terao, Sanae Asayama
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Publication number: 20050079839Abstract: A radio-frequency (RF) receiver includes an input terminal for receiving RF signals in a first frequency band and a second frequency band lower than the first frequency band, a first tuned filter allowing a signal of a passing frequency in the RF signal in the first frequency band to pass through the filter, a local oscillator, a frequency divider for frequency-dividing a signal output from the local oscillator, a first mixer operable to convert the signal output from the first tuned filter into a signal of an intermediate frequency, a second tuned filter allowing a signal of a passing frequency of the RF signal in the second frequency band to pass through the filter, a second mixer operable to convert the signal output from the second tuned filter into a signal of the intermediate frequency, and a phase-locked-loop (PLL) circuit operable to control an oscillation frequency of the local oscillator and the passing frequencies of the first tuned filter and the second tuned filter.Type: ApplicationFiled: October 12, 2004Publication date: April 14, 2005Inventors: Sanae Asayama, Koji Nakatsuji, Masanori Suzuki, Atsuhito Terao
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Publication number: 20050032492Abstract: An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator (56) of a high frequency receiving device, and the oscillation frequency changing means, in each frequency band received, changes the oscillation frequency characteristic of local oscillator (56) in relation to the tuning voltage supplied from PLL circuit (78), and operates in accordance with the frequency characteristic of tuning filter (52, 54, 62, 64) to obtain an oscillation signal varied just by a predetermined frequency, thereby making it possible to receive broadband channels of continuous VHF broadcast band and UHF broadcast band.Type: ApplicationFiled: June 24, 2004Publication date: February 10, 2005Inventors: Sanae Asayama, Koji Nakatsuji, Atsuhito Terao, Yoshihide Tabata, Hideji Takami, Masanori Suzuki, Hirochika Kashima
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Publication number: 20040142673Abstract: The present invention provides a mixer circuit which can suppress image interfering signals and interfering signals related to higher harmonic component of an oscillator. Using the mixer circuit, it is possible to provide a high-frequency signal receiver which maintains good signal receiving condition. This mixer circuit comprises a plurality of mixers, oscillators, a plurality of oscillator phase shifters which serve to phase-shift the output of the oscillators and supply the output to the mixers, and a plurality of intermediate frequency phase shifters which serve to phase-shift the output of the mixers. The high-frequency signal receiver comprises at least a pre-filter and the mixer circuit.Type: ApplicationFiled: November 25, 2003Publication date: July 22, 2004Inventors: Sanae Asayama, Atsuhito Terao
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Publication number: 20040130666Abstract: A high frequency receiver of the present invention has a mixer of which one input part is connected to an output part of a filter and the other input part is connected to an output part of a frequency-variable local oscillator, and an output terminal connected to an output part of the mixer. The mixer is an image rejection mixer. The filter has a moderated damping characteristic in a frequency where the image rejection mixer reduces an image. Therefore, a high performance filter is not required, and hence a low price is realized.Type: ApplicationFiled: October 30, 2003Publication date: July 8, 2004Inventors: Masanori Suzuki, Koji Nakatsuji, Sanae Asayama, Atsuhito Terao, Kazutoshi Sato
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Publication number: 20040121811Abstract: A radio frequency apparatus comprising a printed circuit board mounting an electronic component including a coil as an inductance element, a metal frame body covering this printed circuit board and connected to the ground, a lid formed integrally with the frame body, covering the inductance element mounting side of the frame body, and a leg formed by cutting and bending from the lid, having a width nearly same as the width of the coil, in which the leg is disposed closely to the coil.Type: ApplicationFiled: October 15, 2003Publication date: June 24, 2004Inventors: Koji Nakatsuji, Hiroyuki Yamada, Hiromasa Asano, Masanori Suzuki, Atsuhito Terao, Noriko Asano