Patents by Inventor Masayoshi Nakamura
Masayoshi Nakamura 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: 8511033Abstract: A beam-column connection structure is formed, after installing a continued beam member to a predetermined position, by connecting and fixing lateral beam members, to side faces of an end portion of the continued beam member using a drift pin while connection grooves are fitted to side face connection metal fittings which are attached to the end portion, connecting an extension beam member to the end portion of the continued beam member using a drift pin while a connection groove formed at an end face of the extension beam member is fitted to the end face connection metal fitting, and connecting and fixing column members, to the upper face and lower face of the end portion of the continued beam member using a drift pin while fitting holes, formed at end faces of the column members, are fitted to the top end side portions of column connection pole-like fittings.Type: GrantFiled: May 21, 2012Date of Patent: August 20, 2013Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura
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Publication number: 20130125497Abstract: A beam-column connection structure is formed, after installing a continued beam member to a predetermined position, by connecting and fixing lateral beam members, to side faces of an end portion of the continued beam member using a drift pin while connection grooves are fitted to side face connection metal fittings which are attached to the end portion, connecting an extension beam member to the end portion of the continued beam member using a drift pin while a connection groove formed at an end face of the extension beam member is fitted to the end face connection metal fitting, and connecting and fixing column members, to the upper face and lower face of the end portion of the continued beam member using a drift pin while fitting holes, formed at end faces of the column members, are fitted to the top end side portions of column connection pole-like fittings.Type: ApplicationFiled: May 21, 2012Publication date: May 23, 2013Applicants: KANAI CO., LTD., Sumitomo Forestry Co., Ltd.Inventors: Yoshinobu KUMAKAWA, Junichi IMAI, Kunio KANAI, Masayoshi NAKAMURA
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Patent number: 8289075Abstract: A class-D amplifier for generating from an input signal a digital signal for driving a load, includes an output limit instruction generating section that detects that the digital signal falls outside a limit range and that outputs an output limit instruction signal, an attenuation instruction pulse generating section that includes an integrator for integrating the output limit instruction signal and that outputs a periodical attenuation instruction pulse having pulse width corresponding to an integrated value in the integrator, an attenuating section provided in an input path for the input signal and that attenuates the input signal based on the attenuation instruction pulse, and a mute control section that controls the integrated value in the integrator independently of the output limit instruction signal to control an amount of the attenuation of the attenuating section applied to the input signal.Type: GrantFiled: September 14, 2010Date of Patent: October 16, 2012Assignee: Yamaha CorporationInventors: Tatsuya Kishii, Moritaka Iyoda, Hirotoshi Tsuchiya, Toshio Maejima, Masayoshi Nakamura, Masato Miyazaki, Akihisa Himeno
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Patent number: 8289071Abstract: A charge pump includes a switching circuit which is interposed among first and second output capacitors, a flying capacitor, and an input power supply; and a control unit which controls the switching circuit. The charge pump is operated in an operation mode including a high-voltage outputting mode, a low-voltage outputting mode, and a relay mode. The control unit controls the switching circuit so that respective charging voltages of the first and second capacitors that are charged in the high-voltage outputting mode are gradually lowered. The control unit changes the operation mode of the charge pump by relay transition from the high-voltage outputting mode through the relay mode to the low-voltage outputting mode when a voltage lower command is given during a period when the operation mode of the charge pump is in the high-voltage outputting mode.Type: GrantFiled: September 15, 2010Date of Patent: October 16, 2012Assignee: Yamaha CorporationInventors: Masato Miyazaki, Hirotaka Kawai, Tatsuya Kishii, Masayoshi Nakamura, Ken Makino
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Publication number: 20120117062Abstract: There is provided an information collecting system capable of collecting general information. An accusation information collecting system 1 is constituted by accusation information providing terminals 2 to be used by accusers, a management server 3 and accusation information browsing terminals 5 to be used by accusation information browsing persons. The accusation information providing terminal 2 has an accusation information transmitting unit 11 for transmitting accusation information to the management server 3 via the Internet 4.Type: ApplicationFiled: July 29, 2010Publication date: May 10, 2012Inventors: Harukazu Suematsu, Masayoshi Nakamura
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Patent number: 8159305Abstract: An amplifying device includes a selecting section that selects one of a first power source potential and a second power source potential which are different from each other, a potential generating circuit that generates a third power source potential from the power source potential selected by the selecting section, an amplifier that operates with supply of the first power source potential and the third power source potential, and a controlling circuit that variably controls a target to be selected by the selecting section in accordance with at least one of an amplitude of a signal on an input side of the amplifier, an amplitude of a signal on an output side of the amplifier, and the third power source potential.Type: GrantFiled: September 15, 2010Date of Patent: April 17, 2012Assignee: Yamaha CorporationInventors: Tatsuya Kishii, Hirotoshi Tsuchiya, Masayoshi Nakamura, Masato Miyazaki, Akihisa Himeno
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Patent number: 7952966Abstract: A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector (1) in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit (2) for outputting at least a pair of arithmetic signals from the output of the photoelectric detector (1); a phase comparator (4) for detecting a phase difference between the output signals of the arithmetic unit (2); an absolute value detector (8) for detecting an absolute value of the output signal of the phase comparator (4); a level detector (9) for generating a signal that indicates whether or not a convergence position of the light spot is located off an information track by detecting a predetermined number of times or more the output signal of the absolute value detector (8) has become larger than a predetermined value; a sensitivity detector (10) for detecting and outputting the sensitivity of the level detector (9) by observing the outType: GrantFiled: November 16, 2007Date of Patent: May 31, 2011Assignee: Panasonic CorporationInventors: Masayoshi Nakamura, Akihiko Nishioka, Yasuo Nakata
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Publication number: 20110068866Abstract: An amplifying device includes a selecting section that selects one of a first power source potential and a second power source potential which are different from each other, a potential generating circuit that generates a third power source potential from the power source potential selected by the selecting section, an amplifier that operates with supply of the first power source potential and the third power source potential, and a controlling circuit that variably controls a target to be selected by the selecting section in accordance with at least one of an amplitude of a signal on an input side of the amplifier, an amplitude of a signal on an output side of the amplifier, and the third power source potential.Type: ApplicationFiled: September 15, 2010Publication date: March 24, 2011Applicant: Yamaha CorporationInventors: Tatsuya Kishii, Hirotoshi Tsuchiya, Masayoshi Nakamura, Masato Miyazaki, Akihisa Himeno
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Publication number: 20110068856Abstract: A charge pump includes a switching circuit which is interposed among first and second output capacitors, a flying capacitor, and an input power supply; and a control unit which controls the switching circuit. The charge pump is operated in an operation mode including a high-voltage outputting mode, a low-voltage outputting mode, and a relay mode. The control unit controls the switching circuit so that respective charging voltages of the first and second capacitors that are charged in the high-voltage outputting mode are gradually lowered. The control unit changes the operation mode of the charge pump by relay transition from the high-voltage outputting mode through the relay mode to the low-voltage outputting mode when a voltage lower command is given during a period when the operation mode of the charge pump is in the high-voltage outputting mode.Type: ApplicationFiled: September 15, 2010Publication date: March 24, 2011Inventors: Masato Miyazaki, Hirotaka Kawai, Tatsuya Kishii, Masayoshi Nakamura, Ken Makino
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Publication number: 20110063027Abstract: A class-D amplifier for generating from an input signal a digital signal for driving a load, includes an output limit instruction generating section that detects that the digital signal falls outside a limit range and that outputs an output limit instruction signal, an attenuation instruction pulse generating section that includes an integrator for integrating the output limit instruction signal and that outputs a periodical attenuation instruction pulse having pulse width corresponding to an integrated value in the integrator, an attenuating section provided in an input path for the input signal and that attenuates the input signal based on the attenuation instruction pulse, and a mute control section that controls the integrated value in the integrator independently of the output limit instruction signal to control an amount of the attenuation of the attenuating section applied to the input signal.Type: ApplicationFiled: September 14, 2010Publication date: March 17, 2011Applicant: Yamaha CorporationInventors: Tatsuya Kishii, Moritaka Iyoda, Hirotoshi Tsuchiya, Toshio Maejima, Masayoshi Nakamura, Masato Miyazaki, Akihisa Himeno
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Publication number: 20100034062Abstract: A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector (1) in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit (2) for outputting at least a pair of arithmetic signals from the output of the photoelectric detector (1); a phase comparator (4) for detecting a phase difference between the output signals of the arithmetic unit (2); an absolute value detector (8) for detecting an absolute value of the output signal of the phase comparator (4); a level detector (9) for generating a signal that indicates whether or not a convergence position of the light spot is located off an information track by detecting a predetermined number of times or more the output signal of the absolute value detector (8) has become larger than a predetermined value; a sensitivity detector (10) for detecting and outputting the sensitivity of the level detector (9) by observing the outType: ApplicationFiled: November 16, 2007Publication date: February 11, 2010Applicant: PANASONIC CORPORATIONInventors: Masayoshi Nakamura, Akihiko Nishioka, Yasuo Nakata
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Patent number: 7362667Abstract: In an optical information reproduction apparatus having optical beam sources having at least two types of wavelengths, an object lens may be damaged by colliding with an information recording medium while driving a focus servo, which is caused by a fake signal generated due to an incompatibility of the wavelength in use with the information recording medium. To solve such a problem, in case the type of the information recording medium is unrecognizable and a focus servo is led in by using the optical beam source having the first wavelength, the focus servo is led in by using the second focus servo lead-in unit which is driven by an output of a near focus point detection unit during an operation of a second focus search unit which renders the object lens move away from the information recording medium.Type: GrantFiled: November 12, 2004Date of Patent: April 22, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Emi Kitano, Masayoshi Nakamura, Yoshiyasu Nakayama, Yasuo Ueda
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Patent number: 7292130Abstract: A fusible link adapted to be connected to a battery terminal and a compact and thin battery fuse unit that contains the fusible link and battery terminal. The link, formed by punching out an electrically conductive metallic plate, includes an input side connecting-section, an output side connecting-section, a fusible section having a narrow width and provided between the input and output side connecting-sections, and a resin section enclosing the fusible section. Coupling portions between the fusible section and the input and output side connecting-sections are molded in the resin section. The input and output side connecting-sections are arranged on the angled positions with respect to the fusible section. The fusible link and a battery terminal connected to the input side connecting-section of the fusible link are contained in a casing so that arc portions of the battery terminal are exposed from the casing. The arc portions engage a battery post.Type: GrantFiled: October 27, 2004Date of Patent: November 6, 2007Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Shunji Taga, Masayoshi Nakamura
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Patent number: 7075866Abstract: A clock extracting device of a disc reproducing apparatus includes an information read-out member for reading information signals from a disklike information recording medium; a voltage control oscillator; a phase comparator; a frequency comparator; a speed sensor for detecting the frequency of the output of the voltage control oscillator at a reference clock so as to output a speed signal; a gain command unit for designating a loop gain of a clock extracting circuit in accordance with the speed signal outputted from the speed sensor; a charge pump which discharges or draws electric current in accordance with outputs of the phase comparator and the frequency comparator and changes over an output current value in accordance with a gain command of the gain command unit; and a series circuit of a resistor and a capacitor, wherein the gain command unit issues the gain command such that the loop gain of the clock extracting circuit secures a desired operating point in accordance with a read rate of the informationType: GrantFiled: November 9, 2001Date of Patent: July 11, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Nakamura, Emi Kitano
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Publication number: 20050116805Abstract: A fusible link provides a fusible link adapted to be connected to a battery terminal and a compact and thin battery fuse unit that contains the fusible link and battery terminal. The link, formed by punching out an electrically conductive metallic plate, includes an input side connecting-section, an output side connecting-section, a fusible section having a narrow width and provided between the input and output side connecting-sections, and a resin section enclosing the fusible section. Coupled portions between the fusible section and the input and output side connecting-sections are molded in the resin section. The input and output side connecting-sections are arranged on the angled positions with respect to the fusible section. The fusible link and a battery terminal connected to the input side connecting-section of the fusible link are contained in a casing so that arc portions of the battery terminal are exposed from the casing. The arc portions engage a battery post.Type: ApplicationFiled: October 27, 2004Publication date: June 2, 2005Applicant: SUMITOMO WIRING SYSTEMS, LTD.Inventors: Shunji Taga, Masayoshi Nakamura
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Patent number: 6634892Abstract: An electrical connector housing includes a first shell carrying connector mounts, fuse mounts and relay mounts. A second shell comprises second connector mounts, and fitted to the first shell. The electrical connector housing contains a connector circuitry module, a fuse circuitry module, a relay circuitry module and a printed board. The connector circuitry module includes connector-connecting circuitry formed of a first bus bar stack and a flexible printed board, while the fuse circuitry module includes fuse-connecting circuitry formed of a second bus bar stack. Likewise, the relay circuitry module includes relay-connecting circuitry formed of a third bus bar stack.Type: GrantFiled: August 6, 2001Date of Patent: October 21, 2003Assignee: Sumitomo Wiring Systems, Ltd.Inventor: Masayoshi Nakamura
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Patent number: 6552274Abstract: A wire laying plate assembly includes a plurality of synthetic resin insulating plates (25-27). Bosses (46-48) project from at least one of the insulating plates (24-26). At least one other of the insulating plates (25-27) is formed with boss-escaping portions (55-57) for accommodating leading ends (49-51) of the bosses (46-48) formed on different insulating plates (24-26). The boss-escaping portions (55-57) gradually become deeper from their outer peripheries toward their centers. Busbars (28-31) are arranged between the insulating plates (24-27). The busbars (29-31) are formed with insertion holes (52-54). The busbars (29-31) are secured to the insulating plates (24-27) by inserting the bosses (46-48) through the insertion holes (52-54) and crimping them. In this way, a wire laying plate assembly (19) is assembled.Type: GrantFiled: November 14, 2000Date of Patent: April 22, 2003Assignee: Sumitomo Wiring Systems, Ltd.Inventor: Masayoshi Nakamura
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Publication number: 20020057633Abstract: A clock extracting device of a disc reproducing apparatus, comprising: an information read-out member for reading information signals from a disklike information recording medium; a voltage control oscillator; a phase comparator for comparing a phase of the information signals read by the information read-out member and a phase of an output of the voltage control oscillator; a frequency comparator for comparing a frequency of the information signals read by the information read-out member and a frequency of the output of the voltage control oscillator; a speed sensor for detecting the frequency of the output of the voltage control oscillator at a reference clock so as to output a speed signal; a gain command unit for designating a loop gain of a clock extracting circuit in accordance with the speed signal outputted from the speed sensor; a charge pump which discharges or draws electric current in accordance with outputs of the phase comparator and the frequency comparator and changes over an output current vaType: ApplicationFiled: November 9, 2001Publication date: May 16, 2002Inventors: Masayoshi Nakamura, Emi Kitano
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Patent number: D700506Type: GrantFiled: December 29, 2011Date of Patent: March 4, 2014Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura
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Patent number: D708935Type: GrantFiled: December 29, 2011Date of Patent: July 15, 2014Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura