Patents by Inventor Tadata Hatanaka
Tadata Hatanaka 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: 10033275Abstract: A DC-DC converter module includes a module substrate on which switching transistors and a controller IC chip are mounted, stud terminals mounted on a surface of the module substrate, and an inductor attached to the stud terminals such that the inductor faces the module substrate. In a plan view, the switching transistors are arranged within an area where the inductor overlaps the module substrate, whereas at least a portion of the controller IC chip is arranged outside the area.Type: GrantFiled: February 2, 2016Date of Patent: July 24, 2018Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takuya Ishii, Atsushi Kitagawa, Tadata Hatanaka
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Publication number: 20160164417Abstract: A DC-DC converter module includes a module substrate on which switching transistors and a controller IC chip are mounted, stud terminals mounted on a surface of the module substrate, and an inductor attached to the stud terminals such that the inductor faces the module substrate. In a plan view, the switching transistors are arranged within an area where the inductor overlaps the module substrate, whereas at least a portion of the controller IC chip is arranged outside the area.Type: ApplicationFiled: February 2, 2016Publication date: June 9, 2016Inventors: Takuya ISHII, Atsushi KITAGAWA, Tadata HATANAKA
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Patent number: 8653863Abstract: The sawtooth wave generation circuit includes: a switch circuit configured to switch a connection state thereof between a first connection state, in which a current from a current source is flowed from a first terminal of the output capacitor to a second terminal of the output capacitor, and a second connection state, in which a current from the current source is flowed from the second terminal of the output capacitor to the first terminal of the output capacitor; a switch control circuit configured such that, in each connection state of the switch circuit, if an output voltage has reached a predetermined threshold which is set in relation to an intermediate voltage, the switch control circuit controls the switch circuit to switch the connection state to the other connection state at least during a part of a predetermined period thereafter.Type: GrantFiled: July 24, 2013Date of Patent: February 18, 2014Assignee: Panasonic CorporationInventors: Tadata Hatanaka, Takuya Ishii
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Publication number: 20130307594Abstract: The sawtooth wave generation circuit includes: a switch circuit configured to switch a connection state thereof between a first connection state, in which a current from a current source is flowed from a first terminal of the output capacitor to a second terminal of the output capacitor, and a second connection state, in which a current from the current source is flowed from the second terminal of the output capacitor to the first terminal of the output capacitor; a switch control circuit configured such that, in each connection state of the switch circuit, if an output voltage has reached a predetermined threshold which is set in relation to an intermediate voltage, the switch control circuit controls the switch circuit to switch the connection state to the other connection state at least during a part of a predetermined period thereafter.Type: ApplicationFiled: July 24, 2013Publication date: November 21, 2013Applicant: PANASONIC CORPORATIONInventors: Tadata HATANAKA, Takuya ISHII
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Patent number: 7737688Abstract: The magnetic field detecting apparatus is provided with: a magnetic field detecting unit for outputting one of two signals having different potential levels from each other in response to a perpheral magnetic field; an energizing control unit for producing a periodic energizing control signal indicative of timing at which the magnetic field detecting unit is energized by employing a clock signal and another signal obtained by frequency-dividing, or frequency-multiplying the clock signal, and for supplying the produced energizing control signal to the magnetic field detecting unit; a first inverting unit for inverting the potential level of the output signal of the magnetic field detecting unit; and an energizing time period control unit for supplying a time period control signal to the energizing control unit, the time period control signal controlling the time period of the energizing control signal in response to the potential level of the output signal of the magnetic field detecting unit, and the potentiaType: GrantFiled: July 30, 2008Date of Patent: June 15, 2010Assignee: Panasonic CorporationInventors: Takuya Tomida, Tadata Hatanaka, Shigeo Masai
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Publication number: 20090033324Abstract: The magnetic field detecting apparatus is provided with: a magnetic field detecting unit for outputting one of two signals having different potential levels from each other in response to a perpheral magnetic field; an energizing control unit for producing a periodic energizing control signal indicative of timing at which the magnetic field detecting unit is energized by employing a clock signal and another signal obtained by frequency-dividing, or frequency-multiplying the clock signal, and for supplying the produced energizing control signal to the magnetic field detecting unit; a first inverting unit for inverting the potential level of the output signal of the magnetic field detecting unit; and an energizing time period control unit for supplying a time period control signal to the energizing control unit, the time period control signal controlling the time period of the energizing control signal in response to the potential level of the output signal of the magnetic field detecting unit, and the potentiaType: ApplicationFiled: July 30, 2008Publication date: February 5, 2009Inventors: Takuya Tomida, Tadata Hatanaka, Shigeo Masai
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Patent number: 7459887Abstract: A voltage detection circuit detects an input voltage in first and second periods to average by using a switch circuit and a sampling circuit. At this time, the input voltage of the second period is added to the input voltage of the first period so that a polarity of variations is opposite, the variations being in relative errors of a plurality of resistors for dividing the input voltage, in input offset voltages of a voltage amplifier for amplifying an inputted minute voltage, and in input offset voltages of a comparator for comparing an amplified voltage value with a certain level.Type: GrantFiled: October 26, 2005Date of Patent: December 2, 2008Assignee: Panasonic CorporationInventor: Tadata Hatanaka
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Publication number: 20060113969Abstract: A voltage detection circuit detects an input voltage in first and second periods to average by using a switch circuit and a sampling circuit. At this time, the input voltage of the second period is added to the input voltage of the first period so that a polarity of variations is opposite, the variations being in relative errors of a plurality of resistors for dividing the input voltage, in input offset voltages of a voltage amplifier for amplifying an inputted minute voltage, and in input offset voltages of a comparator for comparing an amplified voltage value with a certain level.Type: ApplicationFiled: October 26, 2005Publication date: June 1, 2006Inventor: Tadata Hatanaka
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Patent number: 7049812Abstract: A magnetic field sensor including an amplifier and a magnetic field element for outputting a two-phase signal according to an applied magnetic field strength. Polarities of the two phases of the signal are mutually opposite. The amplifier amplifies the signal and outputs a resulting voltage across a pair of output terminals, which are connected to both ends of a condenser. A switch makes a connection between one of the output terminals and one end of the condenser. The switch closes in a first phase of the two-phase signal and opens in a second phase. A comparator inputting voltage across both ends of the switch converts the result of the comparison, based on a predetermined voltage, into a binary output signal.Type: GrantFiled: April 21, 2004Date of Patent: May 23, 2006Assignee: Matsushita Electric Industrial Co., LtdInventors: Jun-ichiro Hara, Tadata Hatanaka
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Patent number: 6861839Abstract: A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.Type: GrantFiled: April 19, 2004Date of Patent: March 1, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jun-ichiro Hara, Tadata Hatanaka
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Publication number: 20040196033Abstract: A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.Type: ApplicationFiled: April 19, 2004Publication date: October 7, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Jun-ichiro Hara, Tadata Hatanaka
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Publication number: 20040196034Abstract: A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.Type: ApplicationFiled: April 21, 2004Publication date: October 7, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Jun-ichiro Hara, Tadata Hatanaka
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Patent number: 6794863Abstract: The present invention provides a magnetic sensor with a simple configuration which detects a magnetic field strength of both polarities and which consumes a small amount of power.Type: GrantFiled: November 13, 2003Date of Patent: September 21, 2004Assignee: Matsushta Electric Industrial Co., Ltd.Inventor: Tadata Hatanaka
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Patent number: 6777932Abstract: A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.Type: GrantFiled: March 20, 2001Date of Patent: August 17, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jun-ichiro Hara, Tadata Hatanaka
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Publication number: 20040130317Abstract: The present invention provides a magnetic sensor with a simple configuration which detects a magnetic field strength of both polarities and which consumes a small amount of power.Type: ApplicationFiled: November 13, 2003Publication date: July 8, 2004Inventor: Tadata Hatanaka
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Patent number: 6727684Abstract: A magnetic field sensor includes: a Hall element; a voltage amplifier for amplifying an output voltage from the Hall element so as to output an amplified signal; a voltage comparison circuit for receiving the amplified signal; a switch circuit provided between the voltage amplifier and the voltage comparison circuit for inverting a polarity of the amplified signal; and a latch circuit for holding an output signal from the voltage comparison circuit. The voltage comparison circuit inverts a polarity of a hysteresis voltage that determines a reference value of a magnetic field intensity in response to a first synchronizing signal, which triggers a detection of a magnetic field, and a second synchronizing signal following the first synchronizing signal.Type: GrantFiled: July 10, 2002Date of Patent: April 27, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Tadata Hatanaka
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Publication number: 20030205996Abstract: An inexpensive and precise magnetic field sensor which comprises a Hall element and an amplifier is provided.Type: ApplicationFiled: March 20, 2001Publication date: November 6, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Jun-Ichiro Hara, Tadata Hatanaka
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Publication number: 20030020470Abstract: A magnetic field sensor includes: a Hall element; a voltage amplifier for amplifying an output voltage from the Hall element so as to output an amplified signal; a voltage comparison circuit for receiving the amplified signal; a switch circuit provided between the voltage amplifier and the voltage comparison circuit for inverting a polarity of the amplified signal; and a latch circuit for holding an output signal from the voltage comparison circuit. The voltage comparison circuit inverts a polarity of a hysteresis voltage that determines a reference value of a magnetic field intensity in response to a first synchronizing signal, which triggers a detection of a magnetic field, and a second synchronizing signal following the first synchronizing signal.Type: ApplicationFiled: July 10, 2002Publication date: January 30, 2003Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventor: Tadata Hatanaka