Patents by Inventor Kazuya Omagari
Kazuya Omagari 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: 8242770Abstract: A voltage sensing device with which high-precision voltage sensing is possible without acquiring a unique correction constant for each device. A pair of voltage input nodes NCk and NCk-1 are selected from n+1 voltage input nodes NC0-NCn in switch part 10, and the selected voltage input nodes NCk and NCk-1 are connected to inspection input nodes NA and NB. Here, voltage input nodes NCk and NCk-1 and inspection input nodes NA and NB are connected in two types of patterns of different polarity (forward connection, reverse connection) under the control of control part 50, and digital data S30 for the two sensed voltage signals S20 generated in the two types of connection patterns is input to sensed data processing part 40. With sensed data processing part 40, sensed voltage data S40 that represents the potential difference between voltage input nodes NCk and NCk-1 is generated according to the difference in the two sensed voltage signals S20.Type: GrantFiled: September 3, 2009Date of Patent: August 14, 2012Assignee: Texas Instruments IncorporatedInventors: Toru Tanaka, Akio Ogura, Kazuya Omagari, Nariaki Ogasawara
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Cell voltage abnormality detector and cell voltage monitoring device for a multi-cell series battery
Patent number: 8154253Abstract: A circuit for detecting battery cell abnormalities in a multi-cell series battery for effectively and quickly detecting abnormalities with a simple, small circuit that provides improved reliability, safety and service life of the multi-cell series battery. In the voltage monitoring device 12, immediately after the start of the monitoring cycle of any battery cell BTi, cell voltage abnormality detector 14 checks whether cell voltage Vi is outside of the normal operating range. The cell voltage abnormality detector 14 has: a group of selection switches 18 for selecting any battery cell BT of multi-cell series battery 10 and retrieving its voltage to first and second monitoring terminals A, B; cell voltage/monitoring current converter 20; monitoring current/monitoring voltage converter 22; comparison/evaluation circuit 24; evaluation signal output circuit 26 and abnormality detection controller 28.Type: GrantFiled: September 12, 2008Date of Patent: April 10, 2012Assignee: Texas Instruments IncorporatedInventor: Kazuya Omagari -
Patent number: 8120209Abstract: A voltage sensing device with which high-precision voltage sensing is possible without the need to obtain a unique correction constant for each device. A pair of voltage input nodes NCk and NCk-1 is selected from voltage input nodes NC0-NCn in switch part 10, and they are connected to sensing input nodes NA and NB in two types of patterns with different polarity (forward connection, reverse connection). Sensing input nodes NA and NB are held at reference potential Vm by voltage sensing part 20, and current Ina and Inb corresponding to the voltage at voltage input nodes NCk and NCk-1 flows to input resistors RIk and RIk-1. Currents Ina and Inb are synthesized at different ratios in voltage sensing part 20, and sensed voltage signal S20 is generated according to the synthesized current Ic. Sensed voltage data S40 with low error is generated according to the difference between the two sensed voltage signals S20 generated in the two connection patterns.Type: GrantFiled: September 3, 2009Date of Patent: February 21, 2012Assignee: Texas Instruments IncorporatedInventors: Toru Tanaka, Akio Ogura, Kazuya Omagari, Nariaki Ogasawara
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Publication number: 20100090540Abstract: A voltage sensing device with which high-precision voltage sensing is possible without the need to obtain a unique correction constant for each device. A pair of voltage input nodes NCk and NCk-1 is selected from voltage input nodes NC0-NCn in switch part 10, and they are connected to sensing input nodes NA and NB in two types of patterns with different polarity (forward connection, reverse connection). Sensing input nodes NA and NB are held at reference potential Vm by voltage sensing part 20, and current Ina and Inb corresponding to the voltage at voltage input nodes NCk and NCk-1 flows to input resistors RIk and RIk-1. Currents Ina and Inb are synthesized at different ratios in voltage sensing part 20, and sensed voltage signal S20 is generated according to the synthesized current Ic. Sensed voltage data S40 with low error is generated according to the difference between the two sensed voltage signals S20 generated in the two connection patterns.Type: ApplicationFiled: September 3, 2009Publication date: April 15, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Toru Tanaka, Akio Ogura, Kazuya Omagari, Nariaki Ogasawara
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Publication number: 20100052656Abstract: A voltage sensing device with which high-precision voltage sensing is possible without acquiring a unique correction constant for each device. A pair of voltage input nodes NCk and NCk-1 are selected from n+1 voltage input nodes NC0-NCn in switch part 10, and the selected voltage input nodes NCk and NCk-1 are connected to inspection input nodes NA and NB. Here, voltage input nodes NCk and NCk-1 and inspection input nodes NA and NB are connected in two types of patterns of different polarity (forward connection, reverse connection) under the control of control part 50, and digital data S30 for the two sensed voltage signals S20 generated in the two types of connection patterns is input to sensed data processing part 40. With sensed data processing part 40, sensed voltage data S40 that represents the potential difference between voltage input nodes NCk and NCk-1 is generated according to the difference in the two sensed voltage signals S20.Type: ApplicationFiled: September 3, 2009Publication date: March 4, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Toru Tanaka, Akio Ogura, Kazuya Omagari, Nariaki Ogasawara
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CELL VOLTAGE ABNORMALITY DETECTOR AND CELL VOLTAGE MONITORING DEVICE FOR A MULTI-CELL SERIES BATTERY
Publication number: 20090179650Abstract: A circuit for detecting battery cell abnormalities in a multi-cell series battery for effectively and quickly detecting abnormalities with a simple, small circuit that provides improved reliability, safety and service life of the multi-cell series battery. In the voltage monitoring device 12, immediately after the start of the monitoring cycle of any battery cell BTi, cell voltage abnormality detector 14 checks whether cell voltage Vi is outside of the normal operating range. The cell voltage abnormality detector 14 has: a group of selection switches 18 for selecting any battery cell BT of multi-cell series battery 10 and retrieving its voltage to first and second monitoring terminals A, B; cell voltage/monitoring current converter 20; monitoring current/monitoring voltage converter 22; comparison/evaluation circuit 24; evaluation signal output circuit 26 and abnormality detection controller 28.Type: ApplicationFiled: September 12, 2008Publication date: July 16, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventor: Kazuya Omagari -
Patent number: 7375515Abstract: A magnetic sensor circuit supplying an excitation current to an MI device, and having a detection signal supplied thereto corresponding to a magnetic field intensity from the MI device based on the excitation current. The magnetic sensor circuit includes a pulse current supplying circuit supplying a pulse current to the MI device; a sample-and-hold circuit maintaining an approximately peak value of the detection signal and outputting a hold signal; and a temperature compensation part compensating temperature characteristics of the magnetic sensor circuit with respect to the hold signal. The sample-and-hold circuit may include a switching circuit and a holding capacitor. The switching circuit may have an opening/closing control signal supplied thereto based on timing of the pulse current.Type: GrantFiled: December 23, 2005Date of Patent: May 20, 2008Assignee: Ricoh Company, Ltd.Inventors: Kazuya Omagari, Masaki Mori
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Publication number: 20060158182Abstract: A magnetic sensor circuit supplying an excitation current to an MI device, and having a detection signal supplied thereto corresponding to a magnetic field intensity from the MI device based on the excitation current, the magnetic sensor circuit includes a pulse current supplying circuit supplying a pulse current to the MI device; a sample-and-hold circuit maintaining an approximately peak value of the detection signal and outputting a hold signal; and a temperature compensation part compensating temperature characteristics of the magnetic sensor circuit with respect to the hold signal.Type: ApplicationFiled: December 23, 2005Publication date: July 20, 2006Inventors: Kazuya Omagari, Masaki Mori