Patents by Inventor Hiroshi Tanimoto
Hiroshi Tanimoto 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: 20050106550Abstract: An age assessment apparatus capable of assessing a substantial age of an examinee from various active degrees is provided.Type: ApplicationFiled: November 4, 2004Publication date: May 19, 2005Applicant: Feel Fine Kabushiki KaishaInventors: Junichi Hayashi, Norie Tanahashi, Masahiro Terabe, Takashi Kondou, Hiroshi Tanimoto
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Patent number: 6817474Abstract: A magnetic metal removing device for color sorting apparatus includes a hollow feeding roll. Within a hollow portion of the feeding roll, a magnet is arranged such that it closely opposes to a part of an inner surface of the hollow feeding roll to form a magnetic force active surface on the corresponding outer surface of the feeding roll. Magnetic metal mixed in raw granular objects is attracted on the magnetic force active surface. The magnetic forced active surface changes to a magnetic force inactive surface as the feeding roll rotates. The magnetic metal caught on the feeding roll is released from the magnetic forced inactive surface and colleted by a collecting device.Type: GrantFiled: December 3, 2002Date of Patent: November 16, 2004Assignee: Satake CorporationInventors: Norimasa Ikeda, Hiroshi Tanimoto
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Publication number: 20040170376Abstract: An orthogonal demodulating section converts the frequency of received signals to the lower range in batch after rejecting an image band thereof by an RF filter. An image rejecting section rejects the image band of the orthogonally converted output. It allows an enough image rejecting degree to be obtained. An A/D converter section converts the whole range into a digital signal and an orthogonal demodulating section demodulates a desirable channel by means of digital processing. Then, a channel selecting section selects and outputs the desirable channel. It then allows wide-bands to be received in batch, flexible processing to be achieved by the digital processing and an enough image rejecting degree to be obtained.Type: ApplicationFiled: February 9, 2004Publication date: September 2, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hiroshi Tsurumi, Hiroshi Yoshida, Shoji Otaka, Hiroshi Tanimoto
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Patent number: 6714604Abstract: An orthogonal demodulating section converts the frequency of received signals to the lower range in batch after rejecting an image band thereof by an RF filter. An image rejecting section rejects the image band of the orthogonally converted output. It allows an enough image rejecting degree to be obtained. An A/D converter section converts the whole range into a digital signal and an orthogonal demodulating section demodulates a desirable channel by means of digital processing. Then, a channel selecting section selects and outputs the desirable channel. It then allows wide-bands to be received in batch, flexible processing to be achieved by the digital processing and an enough image rejecting degree to be obtained.Type: GrantFiled: June 27, 2000Date of Patent: March 30, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Tsurumi, Hiroshi Yoshida, Shoji Otaka, Hiroshi Tanimoto
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Publication number: 20030127366Abstract: A magnetic metal removing device for color sorting apparatus includes a hollow feeding roll. Within a hollow portion of the feeding roll, a magnet is arranged such that it closely opposes to a part of an inner surface of the hollow feeding roll to form a magnetic force active surface on the corresponding outer surface of the feeding roll. Magnetic metal mixed in raw granular objects is attracted on the magnetic force active surface. The magnetic forced active surface changes to a magnetic force inactive surface as the feeding roll rotates. The magnetic metal caught on the feeding roll is released from the magnetic forced inactive surface and colleted by a collecting device.Type: ApplicationFiled: December 3, 2002Publication date: July 10, 2003Inventors: Norimasa Ikeda, Hiroshi Tanimoto
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Patent number: 6498929Abstract: A receiver having a function of a direct current offset, and including a receiving section for receiving a radio frequency signal, an analog signal processing section for amplifying, band-converting and frequency-converting an analog signal inputted from the receiving section, and an AD converting section for converting an output of the analog signal processing section from an analog signal to a digital signal. Also included is a digital signal processing section for processing the digital signal converted by the DC converting section.Type: GrantFiled: June 23, 1997Date of Patent: December 24, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Tsurumi, Hiroshi Yoshida, Tetsuro Itakura, Takafumi Yamaji, Akira Yasuda, Takashi Ueno, Hiroshi Tanimoto, Ryuichi Fujimoto, Hiroshi Horiguchi
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Patent number: 6477360Abstract: A frequency converter includes a multiplying circuit, a load circuit, and an output buffer circuit. The multiplying circuit is arranged to multiply an RF signal and an LO signal and output a difference frequency signal with a frequency, which is the difference between the frequencies of the two signals, from its output terminal. The load circuit is arranged to connect the output terminal of the multiplying circuit to a power supply. The output buffer circuit is arranged to have an input terminal connected to the output terminal of the multiplying circuit, and an output terminal for outputting a signal to the next stage. A notch circuit for removing an undesired signal frequency component is combined in the load circuit. The notch circuit has an impedance characteristic in which the impedance is abruptly reduced to provide a valley point at the undesired signal frequency.Type: GrantFiled: March 6, 2000Date of Patent: November 5, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Osamu Watanabe, Takafumi Yamaji, Hiroshi Tanimoto, Shoji Otaka
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Patent number: 6381449Abstract: A frequency converter including a mixer circuit which inputs a local oscillation signal and a radio-frequency input signal modulated for communication of information, and performs frequency conversion. A buffer amplifier is higher than a desired signal frequency band, and has a low-pass passage characteristic of cut-off frequency lower than an adjacent channel carrier frequency.Type: GrantFiled: June 22, 1999Date of Patent: April 30, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Yamaji, Tetsuro Itakura, Hiroshi Tanimoto
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Patent number: 6346804Abstract: There is disclosed an impedance conversion circuit called a regulated cascode circuit in which a parasitic capacity deteriorating frequency characteristics is reduced during operation up to about several hundreds of megahertz or higher frequencies. In the impedance conversion circuit comprising two regulated cascode circuits in which active elements and reverse amplifiers are interconnected with a feedback applied thereto, a capacity element is disposed between a control end of one active element and an output end of the other active element.Type: GrantFiled: June 22, 2001Date of Patent: February 12, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Ueno, Tetsuro Itakura, Hiroshi Tanimoto
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Publication number: 20010054888Abstract: There is disclosed an impedance conversion circuit called a regulated cascode circuit in which a parasitic capacity deteriorating frequency characteristics is reduced during operation up to about several hundreds of megahertz or higher frequencies. In the impedance conversion circuit comprising two regulated cascode circuits in which active elements and reverse amplifiers are interconnected with a feedback applied thereto, a capacity element is disposed between a control end of one active element and an output end of the other active element.Type: ApplicationFiled: June 22, 2001Publication date: December 27, 2001Inventors: Takashi Ueno, Tetsuro Itakura, Hiroshi Tanimoto
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Patent number: 6057723Abstract: By disposing the first filter circuit and the second filter circuit whose connection structures are the same and whose element values are different on an integrated circuit, a phase shifter with output signals whose frequency characteristics and errors of phase shift characteristics equally vary can be accomplished.Type: GrantFiled: January 12, 1998Date of Patent: May 2, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Yamaji, Hiroshi Tanimoto
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Patent number: 5995819Abstract: A frequency converter includes: a signal synthesizer element for inputting first and second input signals to synthesize these signals and for outputting a synthesized signal, from which noises even times as large as the frequency of the second input signal are removed; an amplitude limitation amplifier element, composed of a differential amplifier circuit, for amplifying the synthesized signal outputted from the signal synthesizer element to output an amplified signal having a constant amplitude; and a filter for inputting the amplified signal outputted from the amplitude limitation amplifier element, to remove an unnecessary signal component to produce an output a baseband signal including only a desired signal component.Type: GrantFiled: November 22, 1996Date of Patent: November 30, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Yamaji, Osamu Watanabe, Hiroshi Tanimoto, Tetsuro Itakura, Shoji Otaka, Ryuichi Fujimoto
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Patent number: 5994656Abstract: A color sorting machine sorts particles of different colors from raw material such as cereal grains or the like. The machine has a down chute descending towards a front side of the machine for letting raw material particles flow down linearly, a photoelectric detection device which subjects the raw material particles jumped out of the down chute to light and discriminates different-color particles in accordance with difference in reflected light, and a nozzle device which injects air to and blows off the different-color particles. The injection nozzle device is situated on the rear side of the machine with respect to a coming-down locus of raw material particles from the down chute and close to the coming-down locus. The sorting machine further comprises a dust collecting device which is situated on the front side of the machine with respect to the coming-down locus of the raw material.Type: GrantFiled: December 5, 1997Date of Patent: November 30, 1999Assignee: Satake CorporationInventors: Satoru Satake, Takafumi Ito, Hiroshi Tanimoto
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Patent number: 5990737Abstract: A balanced amplifier includes first and second multi-input single-ended output differential amplifiers having matched characteristics and a feedback circuit. The feedback circuit connects differential input terminals and output terminals of the first and second multi-input single-ended output differential amplifiers so that all of the differential input terminals of the first and second multi-input single-ended output differential amplifiers are virtually shorted.Type: GrantFiled: April 28, 1998Date of Patent: November 23, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Zdzislaw Czarnul, Hiroshi Tanimoto, Tetsuro Itakura
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Patent number: 5943637Abstract: A noise analyzing apparatus includes an input unit for inputting a structure of an autonomous system, parameter values and analysis conditions, a periodic steady-state solution calculating unit for calculating a periodic steady-state solution of the autonomous system, a noise source adding unit for adding a noise source to a periodic linear time-variant system obtained by linearizing the autonomous system around the periodic steady-state solution, a time-variant transfer function calculating unit for calculating, for each noise source, a time-variant transfer function of the periodic linear time-variant system to which noise sources are added, a reflected component calculating unit for adding power of a time-variant transfer function reflected to a frequency to be observed, and an output unit for outputting as a result of analysis relating to noise based on results of calculations by the above-described calculating units.Type: GrantFiled: December 26, 1996Date of Patent: August 24, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Makiko Okumura, Hiroshi Tanimoto
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Patent number: 5890058Abstract: In an FDNR type active filter fabricated on an integrated circuit, an FDNR circuit is provided wherein one ends of a first capacitor and an impedance element are connected to an inverted input of an operational amplifier, one ends of the impedance element and a second capacitor are connected to an output end of the operational amplifier, and the other ends of the first and second capacitors are connected to each other. To the impedance element, resistors are connected in series. To the connecting end of the resistors, one end of another resistor is connected, the other end thereof being grounded in an alternating current form. The capacity value of the second capacitor is greater than that of the first capacitor.Type: GrantFiled: September 18, 1996Date of Patent: March 30, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Ueno, Tetsuro Itakura, Hiroshi Tanimoto
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Patent number: 5809408Abstract: A gain switching circuit comprises first and second gain stages connected in parallel between the input terminal and the output terminal, and a control unit for allowing the first and second gain stages to be selectively operative, wherein the first and second gain stages respectively include input sections in which input impedance values viewed from the input terminal are substantially equal to each other, and output sections in which output impedance values viewed from the output terminal are substantially equal to each other. By this configuration, a gain switching circuit and a radio apparatus using such a gain switching circuit adapted so that input/output impedance does not fluctuate are provided without implementing switching between gain stages.Type: GrantFiled: September 8, 1995Date of Patent: September 15, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Ryuichi Fujimoto, Hiroshi Tanimoto
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Patent number: 5756942Abstract: A vibration-damping section with sound absorbing material includes a sound proof panel, sound absorbing material fixed on one surface thereof and vibration damping material stuck on the top surface or the bottom surface of the sound proof panel one surface of the sound absorbing material which is the opposite side of the sound proof panel can be covered with a porous panel, if necessary, and moreover a joint is provided for hanging and connecting sections for closely connecting themselves one another in a width direction.Type: GrantFiled: October 17, 1996Date of Patent: May 26, 1998Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Toshimitsu Tanaka, Nobuteru Hayashi, Syunichi Umemoto, Kenji Iwai, Hiroshi Tanimoto, Akio Sugimoto
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Patent number: 5736840Abstract: A local signal of a predetermined frequency is supplied to an input terminal of a local signal input section. The local signal is applied to a control input terminal of a variable current supply and, in accordance with the local signal, a current is output from a variable current supply and sent to a phase-shifting section. The phase-shifting section includes two resonance circuits each comprised of a capacitor and inductor. The two resonance circuits are connected in parallel with a linear element constituting the local signal input section to output first and second output signals of the same frequency as that of the local signal and whose phases are shifted by a predetermined amount. The respective output signals of the phase-shifting section are output to a next stage through a signal output section comprised of two sets each of a current supply and transistor.Type: GrantFiled: April 1, 1996Date of Patent: April 7, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Shoji Otaka, Hiroshi Tanimoto
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Patent number: RE36861Abstract: A differential amplifier with improved linearity. The amplifier includes a circuit comprised of two emitter-coupled pairs, each pair being formed by two transistors, with connections between corresponding collectors, and constant voltage sources for producing offsets between corresponding bases of the emitter-coupled pairs. The improved linearity is achieved by obtaining outputs as sums of collector currents with offsets. The emitter areas of the transmitters can be of the minimum size available. This feature, when combined with the use of emitter-followers as the constant voltage sources, enable the differential amplifier to achieve a high S/N ratio, a good high-frequency characteristic, a high direct current gain, and a high-speed operation capability along with the improved linearity. In addition, the linearity is further improved by using additional diodes connected to the transistors.Type: GrantFiled: March 8, 1999Date of Patent: September 12, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Mikio Koyama, Hiroshi Tanimoto