Patents by Inventor Tetsuro Hashimoto
Tetsuro Hashimoto 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: 11971355Abstract: A fluorescence observation apparatus according to an embodiment of the present technology includes a stage, an excitation section, and a spectroscopic imaging section. The stage is capable of supporting a fluorescently stained pathological specimen. The excitation section irradiates the pathological specimen on the stage with a plurality of line illuminations of different wavelengths, the plurality of line illuminations being a plurality of line illuminations situated on different axes and parallel to a certain-axis direction. The spectroscopic imaging section includes at least one imaging device capable of separately receiving pieces of fluorescence respectively excited with the plurality of line illuminations.Type: GrantFiled: April 25, 2023Date of Patent: April 30, 2024Assignee: Sony Group CorporationInventors: Hirokazu Tatsuta, Gakuji Hashimoto, Tetsuro Kuwayama
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Publication number: 20240067171Abstract: A brake light activation determining device has a processor configured to detect decrease in the speed of a vehicle ahead, which is located ahead of one's own vehicle, based on output information from a sensor that acquires information relating to the vehicle ahead, to discriminate whether the brake light of the vehicle ahead is activated based on an image representing the vehicle ahead, and to determine that the vehicle ahead is braking, when it has been discriminated that the brake light of the vehicle ahead has been activated, when the speed decrease timing at which reduction in the speed of the vehicle ahead has been detected and the activation timing at which brake light activation by the vehicle ahead was discriminated are synchronized for the vehicle ahead.Type: ApplicationFiled: July 19, 2023Publication date: February 29, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryusuke KURODA, Hitoshi KAMADA, Tetsuro SUGIURA, Daisuke HASHIMOTO
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Patent number: 10608534Abstract: A control circuit of a DC/DC converter includes: a driver turning on a switching transistor and turning off a rectifying transistor in on state, turning off the switching transistor and turning on the rectifying transistor in off state, and turning off the switching transistor and turning off the rectifying transistor in high impedance state; and a switching controller controlling the on state, the off state and the high impedance state, wherein the switching controller repeats a process including: transitioning to the off state when predetermined condition is satisfied in the on state; transitioning to the high impedance state with zero-cross of coil current flowing into an inductor as trigger in the off state; measuring variable time per cycle and transitioning to the off state with time-up as trigger; and transitioning to the on state when feedback voltage corresponding to output voltage of the DC/DC converter decreases to lower threshold voltage.Type: GrantFiled: August 23, 2018Date of Patent: March 31, 2020Assignee: ROHM CO., LTD.Inventors: Osamu Yanagida, Tetsuro Hashimoto
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Patent number: 10389339Abstract: A slew rate control device for controlling a slew rate, includes: a setting part configured to set a voltage value used to determine the slew rate; and a control part configured to control the slew rate, based on the voltage value set by the setting part, so that the slew rate becomes slower as an output voltage of a power supply approaches from a transition starting voltage to a target voltage.Type: GrantFiled: April 13, 2017Date of Patent: August 20, 2019Assignee: ROHM CO., LTD.Inventors: Tetsuro Hashimoto, Tsutomu Ishino
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Publication number: 20190068058Abstract: A control circuit of a DC/DC converter includes: a driver turning on a switching transistor and turning off a rectifying transistor in on state, turning off the switching transistor and turning on the rectifying transistor in off state, and turning off the switching transistor and turning off the rectifying transistor in high impedance state; and a switching controller controlling the on state, the off state and the high impedance state, wherein the switching controller repeats a process including: transitioning to the off state when predetermined condition is satisfied in the on state; transitioning to the high impedance state with zero-cross of coil current flowing into an inductor as trigger in the off state; measuring variable time per cycle and transitioning to the off state with time-up as trigger; and transitioning to the on state when feedback voltage corresponding to output voltage of the DC/DC converter decreases to lower threshold voltage.Type: ApplicationFiled: August 23, 2018Publication date: February 28, 2019Inventors: Osamu YANAGIDA, Tetsuro HASHIMOTO
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Publication number: 20170346402Abstract: A pulse modulator generates a pulse signal, such that an output signal of a DC/DC converter approaches a target value. When a detection value of a coil current of the DC/DC converter crosses a threshold for zero crossing, a reverse flow detection circuit asserts a reverse flow detection signal and turns off a synchronous rectification transistor of the DC/DC converter. An optimizer controls an operation parameter of the reverse flow detection circuit, on the basis of a cycle of the pulse signal.Type: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Tsutomu ISHINO, Tetsuro HASHIMOTO
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Publication number: 20170317667Abstract: A slew rate control device for controlling a slew rate, includes: a setting part configured to set a voltage value used to determine the slew rate, and a control part configured to control the slew rate, based on the voltage value set by the setting part, so that the slew rate becomes slower as an output voltage of a power supply approaches from a transition starting voltage to a target voltage.Type: ApplicationFiled: April 13, 2017Publication date: November 2, 2017Inventors: Tetsuro HASHIMOTO, Tsutomu ISHINO
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Publication number: 20110080989Abstract: A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.Type: ApplicationFiled: December 15, 2010Publication date: April 7, 2011Applicant: ROHM CO., LTD.Inventors: Tetsuro HASHIMOTO, Akihito ITO, Yoshikazu SASAKI, Isao YAMAMOTO
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Patent number: 7884578Abstract: A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.Type: GrantFiled: May 17, 2007Date of Patent: February 8, 2011Assignee: Rohm Co., Ltd.Inventors: Tetsuro Hashimoto, Isao Yamamoto
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Patent number: 7876144Abstract: A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.Type: GrantFiled: May 9, 2007Date of Patent: January 25, 2011Assignee: Rohm Co., Ltd.Inventors: Tetsuro Hashimoto, Akihito Ito, Yoshikazu Sasaki, Isao Yamamoto
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Patent number: 7843172Abstract: A battery charging controller according to the present invention controls battery charging in response to a charging-control signal sent from a CPU, and includes an starting controller which is started upon a detection of an insertion of an AC adapter, and which then starts a regulator at a predetermined timing by using a regulator control signal. The regulator is started upon a detection of the regulator control signal, and thereafter starts the CPU by using an starting signal. The CPU is started upon a detection of the starting signal.Type: GrantFiled: May 25, 2007Date of Patent: November 30, 2010Assignee: ROHM Co., Ltd.Inventors: Tetsuro Hashimoto, Isao Yamamoto, Yoshikazu Sasaki
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Patent number: 7768247Abstract: An under voltage lock out circuit which monitors an input voltage and executes a predetermined sequence when the input voltage satisfies a predetermined condition may include a voltage comparison unit which compares the input voltage and a predetermined threshold voltage, and outputs a comparison signal; a logic circuit which receives the comparison signal output from the voltage comparison unit and a start-up signal instructing start-up of an equipment mounted with the under voltage lock out circuit, and asserts a sequence control signal when start-up is instructed by the start-up signal in a state the input voltage is higher than the threshold voltage; and a sequence circuit which executes a predetermined sequence when the sequence control signal is asserted, wherein the predetermined threshold voltage is switched according to the sequence control signal.Type: GrantFiled: December 29, 2008Date of Patent: August 3, 2010Assignee: Rohm Co., Ltd.Inventors: Yoshikazu Sasaki, Tetsuro Hashimoto, Isao Yamamoto
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Publication number: 20090108827Abstract: An under voltage lock out circuit which monitors an input voltage and executes a predetermined sequence when the input voltage satisfies a predetermined condition may include a voltage comparison unit which compares the input voltage and a predetermined threshold voltage, and outputs a comparison signal; a logic circuit which receives the comparison signal output from the voltage comparison unit and a start-up signal instructing start-up of an equipment mounted with the under voltage lock out circuit, and asserts a sequence control signal when start-up is instructed by the start-up signal in a state the input voltage is higher than the threshold voltage; and a sequence circuit which executes a predetermined sequence when the sequence control signal is asserted, wherein the predetermined threshold voltage is switched according to the sequence control signal.Type: ApplicationFiled: December 29, 2008Publication date: April 30, 2009Applicant: ROHM CO., LTD.Inventors: Yoshikazu SASAKI, Tetsuro HASHIMOTO, Isao YAMAMOTO
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Patent number: 7486064Abstract: A voltage comparison unit compares a battery voltage with a predetermined threshold voltage, and outputs a comparison signal. A sequence circuit receives the comparison signal and a start-up signal instructing start-up of equipment mounted with a UVLO circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal in a state the battery voltage is higher than the threshold voltage. A voltage control unit switches the threshold voltage based on the comparison signal and the start-up signal.Type: GrantFiled: May 7, 2007Date of Patent: February 3, 2009Assignee: Rohm Co., Ltd.Inventors: Yoshikazu Sasaki, Tetsuro Hashimoto, Isao Yamamoto
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Publication number: 20080001574Abstract: A battery charging controller according to the present invention controls battery charging in response to a charging-control signal sent from a CPU, and includes an starting controller which is started upon a detection of an insertion of an AC adapter, and which then starts a regulator at a predetermined timing by using a regulator control signal. The regulator is started upon a detection of the regulator control signal, and thereafter starts the CPU by using an starting signal. The CPU is started upon a detection of the starting signal.Type: ApplicationFiled: May 25, 2007Publication date: January 3, 2008Inventors: Tetsuro Hashimoto, Isao Yamamoto, Yoshikazu Sasaki
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Publication number: 20070296377Abstract: A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.Type: ApplicationFiled: May 17, 2007Publication date: December 27, 2007Inventors: Tetsuro Hashimoto, Isao Yamamoto
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Publication number: 20070263419Abstract: A voltage comparison unit compares a battery voltage with a predetermined threshold voltage, and outputs a comparison signal. A sequence circuit receives the comparison signal and a start-up signal instructing start-up of equipment mounted with a UVLO circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal in a state the battery voltage is higher than the threshold voltage. A voltage control unit switches the threshold voltage based on the comparison signal and the start-up signal.Type: ApplicationFiled: May 7, 2007Publication date: November 15, 2007Inventors: Yoshikazu Sasaki, Tetsuro Hashimoto, Isao Yamamoto
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Publication number: 20070262805Abstract: A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.Type: ApplicationFiled: May 9, 2007Publication date: November 15, 2007Inventors: Tetsuro Hashimoto, Akihito Ito, Yoshikazu Sasaki, Isao Yamamoto
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Patent number: 6967469Abstract: A battery is charged by using in series a constant-voltage DC power supply with current limit function and a constant voltage circuit which has a differential comparator circuit and whose current limit value is variable. Following a period of charging with the current of current limit value by the constant-voltage DC power supply, a period is provided in correspondence with the state of charging of the battery, for charging with a current limit value of the constant voltage circuit which is smaller than that current limit value. The detection of the charging state of the battery is effected by a comparison between a current value of a current source of a differential comparator circuit and a differential output of that differential comparator circuit. It enables to reduce electric power consumed by the control transistor of the constant voltage circuit and to reduce the allowable loss required for the control transistor.Type: GrantFiled: November 6, 2003Date of Patent: November 22, 2005Assignee: Rohm Co, Ltd.Inventors: Isao Yamamoto, Tetsuro Hashimoto, Hiroyuki Ishikawa, Shigekane Matsui
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Publication number: 20040095095Abstract: A battery is charged by using in series a constant-voltage DC power supply with current limit function and a constant voltage circuit which has a differential comparator circuit and whose current limit value is variable. Following a period of charging with the current of current limit value by the constant-voltage DC power supply, a period is provided in correspondence with the state of charging of the battery, for charging with a current limit value of the constant voltage circuit which is smaller than that current limit value. The detection of the charging state of the battery is effected by a comparison between a current value of a current source of a differential comparator circuit and a differential output of that differential comparator circuit. It enables to reduce electric power consumed by the control transistor of the constant voltage circuit and to reduce the allowable loss required for the control transistor.Type: ApplicationFiled: November 6, 2003Publication date: May 20, 2004Applicant: ROHM CO., LTD.Inventors: Isao Yamamoto, Tetsuro Hashimoto, Hiroyuki Ishikawa, Shigekane Matsui