Patents by Inventor Hiromitsu Nakano
Hiromitsu Nakano 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: 20240096241Abstract: A display apparatus (100) includes a shelf tag attachment member (102) being fixed to a front end surface of a product shelf S, and a shelf tag (101) having a display surface (103). The shelf tag (101) is attached to the shelf tag attachment member (102) via a rotation axis A, and is rotatable in a predetermined direction in which the display surface (103) is turned upward. A lower end of the shelf tag (101) is located below a lower surface LS of the product shelf S and a lower end of the shelf tag attachment member (102) in a vertical direction.Type: ApplicationFiled: November 5, 2021Publication date: March 21, 2024Applicants: NEC Corporation, NEC Platforms, Ltd.Inventors: Hiroki Sugegaya, Akihiko Onita, Shunsuke Tsuda, Benny Goh, Hiromitsu Nakano, Kunihiro Akaba, Kazuhiko Oda
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Publication number: 20240013683Abstract: A shelf tag attachment apparatus (100) includes an electronic shelf tag (101), and a shelf tag holding portion (103) for holding the electronic shelf tag (101). The electronic shelf tag (101) includes, on each of an upper end and a lower end, a groove portion (105) extending in a left-right direction, and the shelf tag holding portion (103) includes a protrusion portion (115) that projects downwards and upwards, and that fits into each of the upper groove portion (105) and a lower groove portion (105). At least one combination of a combination of the upper groove portion (105) and the protrusion portion (115) that fits into the groove portion (105), and a combination of the lower groove portion (105) and the protrusion portion (115) that fits into the groove portion (105) is discretely provided.Type: ApplicationFiled: July 29, 2021Publication date: January 11, 2024Applicants: NEC Corporation, NEC Platforms, Ltd.Inventors: Kunihiro Akaba, Hiromitsu Nakano, Akihiko Onita, Shunsuke Tsuda, Hiroki Sugegaya
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Publication number: 20230276956Abstract: A shelf tag attachment apparatus (100) includes a shelf tag holding portion (103) for holding an electronic shelf tag (101), and a support member (102) that supports the shelf tag holding portion rotatably about a rotation axis P extending in a left-right direction of the electronic shelf tag (101). The shelf tag holding portion (103) includes a bearing portion for rotating about the rotation axis P relative to the support member (102). The support member (102) includes an arm portion (110) that is provided with a shaft portion (112), and that sandwiches the bearing portion from the left-right direction. The shelf tag holding portion (103) includes a stopper (130) that contacts the arm portion (110), and thereby locks in such a way that a display surface (104) of the electronic shelf tag (101) does not rotate beyond a previously determined range in a direction to face downwards.Type: ApplicationFiled: July 29, 2021Publication date: September 7, 2023Applicants: NEC Corporation, NEC Platforms, Ltd.Inventors: Kunihiro Akaba, Hiromitsu Nakano, Akihiko Onita, Shunsuke Tsuda, Hiroki Sugegaya
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Publication number: 20140233109Abstract: A method and device is described for compensating ambient temperature dependent magnification and focus change of a zoom lens system, whereby an ambient temperature compensation structure cooperates with a rotational ring and an optical-element adjusting member such that a phase variation between the rotational ring and the optical-element adjusting member in response to an ambient temperature change is compensated and whereby the phase variation characterizes an optical property of the zoom lens system such as magnification or focus.Type: ApplicationFiled: September 30, 2011Publication date: August 21, 2014Applicant: BARCO N.V.Inventors: Hiromitsu Nakano, Daniel Lambot, Koen Van Belle
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Publication number: 20040252285Abstract: A projection device, wherein light (12) emitted from a light source system (1), is split in different colors (13-14-15), in particular primary colors, and subsequently is transmitted to respective light valves, said light source system (1) comprising:Type: ApplicationFiled: March 11, 2004Publication date: December 16, 2004Inventors: Richard Lang, Hiromitsu Nakano, Johan Richard Fornier
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Patent number: 6020715Abstract: A motor driving power supplying section obtains an output voltage by switching-controlling a predetermined voltage outputted from a main power supply and smoothing a voltage thus switching-controlled. A driving transistor group includes a plurality of driving transistors, for supplying electric power based on the output voltage of the motor driving power supplying section to the motor driving coils of multiple phases. A commutation control section supplies conduction switching signals to the driving transistor group so as to switch successive conduction states of the motor driving coils. An output control section controls the output voltage of the motor driving power supplying section so that a collector-emitter voltage of at least one of the plurality of driving transistors included in the driving transistor group has a predetermined value.Type: GrantFiled: November 1, 1993Date of Patent: February 1, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Yasohara, Toshiki Tsubouchi, Hiromitsu Nakano, Toshiaki Seima
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Patent number: 5760359Abstract: In a motor control apparatus for controlling a rotational position of a motor, a rotation detector detects the rotational position of the motor, and outputs first and second detection signals having phases corresponding to a detected rotational position of the motor and different from each other, and a position detecting circuit detects a rotational position in a unit which is less than one cycle of the first and second detection signals based on the first and second detection signals, and outputs a rotational position signal representing a detected rotational position. Further, a motor controller compares the rotational position signal with a reference position signal representing a reference rotational position of the motor to obtain a position error, and controls the rotational position of the motor so that the position error is minimized.Type: GrantFiled: July 25, 1996Date of Patent: June 2, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiromitsu Nakano, Kenichi Kishimoto, Tomohiro Inoue
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Patent number: 5402024Abstract: With a view to reduce vibrations generated by a motor and improve resistance to heat, reliability and vibration isolation properties without increasing the cost or the number of manufacturing steps in a rotor for a permanent-magnet motor, a rotor core is formed of an outer peripheral portion by which the permanent magnet is fixed, and a central portion by which a shaft is fixed, a clearance is provided between the outer peripheral portion and the central portion, and the outer peripheral portion is connected to the central portion by means of a plurality of fastening members. Thus, a rotor having excellent vibration isolation properties can be obtained. Since the rotor core is formed of laminated iron plates on which the outer peripheral portion, the central portion and the fastening members are all formed as one piece, resistance to heat, reliability and the vibration isolation properties can be enhanced without increasing the cost or the number of manufacturing steps.Type: GrantFiled: March 31, 1993Date of Patent: March 28, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akihiko Watanabe, Sotomitsu Maeda, Hiroshi Dohi, Muneo Yamamoto, Yukio Honda, Hiromitsu Nakano, Masahiro Yasohara, Hisataka Kato
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Patent number: 5300866Abstract: A drive apparatus for use in a brushless motor with a rotor and a drive coil assembly. The drive apparatus comprises an energization-state instruction circuit for generating an energization-state instruction signal instructing an energization state of the drive coil assembly on the basis of the position detection signal indicative of a position of the rotor and an energization switching circuit for outputting an energization switching signal to successively switch the energization state of the drive coil assembly in accordance with the energization-state instruction signal and a duty control signal. A power circuit is coupled to a direct-current voltage source and is responsive to the energization switching signal so as to energize the drive coil assembly by means of a direct-current voltage from the direct-current voltage source in accordance with the energization switching signal therefrom.Type: GrantFiled: July 8, 1992Date of Patent: April 5, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Yasohara, Hiroyuki Oku, Hiromitsu Nakano, Hiroshi Dohi, Muneo Yamamoto
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Patent number: 5122715Abstract: A brushless motor driving device includes a plurality of motor driving coils and a plurality of driving transistors, coupled to the motor driving coils, for periodically supplying an electric power to the motor driving coils. A power supply switching circuit is provided for generating a power supply switching signal for driving the motor driving coils on the basis of a frequency signal corresponding to an oscillation frequency of a voltage controlled oscillator. A phase difference detector is provided for detecting a difference between the power supply switching signal and a counterelectromotive voltage generated in the motor driving coils during a period in which no electric power is supplied to the motor driving coils. The phase difference detected by the phase different detector circuit is used to control the oscillation frequency of the voltage controlled oscillator.Type: GrantFiled: July 19, 1989Date of Patent: June 16, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshitsugu Kimura, Masahiro Yasohara, Hiromitsu Nakano
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Patent number: 4983894Abstract: In a system for driving a brushless motor having motor drive coils connected to respective drive transistors, voltages induced in the drive coils when the motor is rotating are continuously detected to produce energization switching signals to be applied to the drive transistors, thereby switching over energization of the drive coils, so that the motor can be continuously driven at optimum energization timing regardless of its rotational speed. Further, when a rotational direction command signal is applied to a forward-backward switching circuit to instruct the motor to rotate in the backward rotational direction while the motor is rotating in the forward rotational direction, torque of the opposite direction is produced to change the rotational direction of the motor.Type: GrantFiled: January 24, 1990Date of Patent: January 8, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Oku, Masahiro Yasohara, Hiromitsu Nakano
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Patent number: 4970445Abstract: The present invention relates to a drive device for a brushless motor utilizing no position detector for detecting the position of a movable element of the motor.The drive device comprises a phase controlled loop for controlling an output of a voltage controlled oscillator (40) by supplying an electric power to motor driving coils (1, 2, 3), detecting the difference in phase between the power supply waveforms thereof and a counterrelectromotive force of the motor driving coils during a power supply interrupting period with the use of a phase difference detector (20) and inputting a detected phase difference signal to the voltage controlled oscillator (40), an oscillation frequency initializing means (70) and a driving transistor interrupting circuit (80).Type: GrantFiled: June 22, 1989Date of Patent: November 13, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshitsugu Kimura, Masahiro Yasohara, Hiromitsu Nakano
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Patent number: 4958948Abstract: A system for driving a brushless motor comprises motor drive coils belonging to a plurality of phases respectively, a plurality of pairs of drive transistors connected to the drive coils respectively, a distribution circuit for sequentially distributing drive-coil energization switching signals to the plural drive transistors respectively, a slope synthesizer for smoothing leading and trailing slope portions of the drive-coil energization switching signals so as to apply the smoothed energization switching signals to the drive transistors respectively through the distribution circuit, a voltage-controlled oscillator for supplying a signal having a suitable frequency as an input to the slope synthesizer, a phase error detector for detecting the phase difference between counter-electromotive voltages induced in the drive coils and the drive-coil energization switching signals in a driver-coil energization pause period, and an error amplifier for amplifying the output signal of the phase error detector and applyType: GrantFiled: October 3, 1989Date of Patent: September 25, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiaki Seima, Susumu Yamamoto, Hiromitsu Nakano
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Patent number: 4900993Abstract: A phase difference between a counter-electromotive voltage induced in a driving coil and a voltage which is applied to the driving coil is detected by comparison of a terminal voltage of the driving coil and a reference voltage. A frequency of a voltage-control oscillator which controls switching of the voltage applied to the driving coil is varied by an output signal made by the comparison, and the phase difference is controlled to be reduced to zero.Type: GrantFiled: June 16, 1988Date of Patent: February 13, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Yasohara, Yoshitsugu Kimura, Hiromitsu Nakano
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Patent number: 4780651Abstract: A speed control apparatus for a motor, wherein the counter-electromotive voltage is detected with great precision even when the counter-electromotive voltage to be caused from the motor driving coils is small or the ambient temperature is changed. The voltages corresponding to the detection voltages are turned into speed signals. The emitter resistance of the driving transistor, which is the cause of the torque reduction, can be removed, and uneven rotation, uneven torque is reduced. The speed control apparatus provides a composite voltage of driving coil voltages that are converted by an inversion amplifier. The voltage corresponding to the composite voltage provides the speed signal. This voltage is transferred to the driving coils and precise speed control is produced without a reduction in the controllable maximum torque or the starting torque.Type: GrantFiled: May 13, 1987Date of Patent: October 25, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiromitsu Nakano, Masahiro Yasohara
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Patent number: 4742281Abstract: A speed control apparatus for a DC motor operable with a low voltage battery has a reference voltage generating circuit capable of operable with a low voltage such as 1 V and is settable for output voltage and for temperature coefficient independently each other and has a differential amplifier which is operable with a very small input voltage and capable of operable with such a low voltage.Type: GrantFiled: November 8, 1985Date of Patent: May 3, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiromitsu Nakano, Mitsuru Yamane, Isao Yoshida
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Patent number: 4477752Abstract: A speed control apparatus for DC motor (1), comprises a bridge circuit formed by the winding of the motor (1), a resistor (2) series thereto, and two resistors (3 and 4). Therein, a reference voltage (E.sub.r) is produced by dividing a voltage V.sub.ref of a constant voltage circuit (20) by a divider network (21+22). The voltage difference this reference voltage (E.sub.r) and a voltage produced across the detection output terminals "a" and "b" which is proportional to a counter electromotive force (E.sub.a) of the DC motor (1) is amplified by a differential amplifier (23+24). A current mirror circuit is formed by transistors (16), (17) and (18). The first transistor (16) regulated of its collector current (I.sub.r) by a constant current circuit (19) controls collector current of the second transistor (17), which controls input current of the constant voltage circuit (20).Type: GrantFiled: March 1, 1982Date of Patent: October 16, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiromitsu Nakano, Isao Yoshida
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Patent number: D597519Type: GrantFiled: February 27, 2008Date of Patent: August 4, 2009Assignee: NEC Infrontia CorporationInventors: Tetsuo Nakano, Makoto Nakayama, Motomasa Igarashi, Hiromitsu Ogura, Masafuku Akatsu, Eiichi Taniguchi, Hiromitsu Nakano, Takeshi Suzuki, Takayuki Izumo, Masaki Kato, Takashi Matsuda
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Patent number: D656119Type: GrantFiled: May 28, 2010Date of Patent: March 20, 2012Assignee: NEC Infrontia CorporationInventors: Eiichi Taniguchi, Hiromitsu Nakano, Chiaki Terao, Takashi Matsuda
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Patent number: D853981Type: GrantFiled: September 13, 2017Date of Patent: July 16, 2019Assignee: NEC PLATFORMS, LTD.Inventors: Hiromitsu Nakano, Katsufumi Matsuura, Wataru Kuwajima, Masakatsu Takizawa, Yasuhito Nagaki, Takayuki Yoshimoto