Patents by Inventor Kazuyasu Nawa
Kazuyasu Nawa 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: 8368356Abstract: A battery pack detachably connectable to an equipment body to supply power to the equipment body, the battery pack including a battery cell, a microcomputer for communicating with the equipment body, a connection terminal connected to the microcomputer, a positive power supply input terminal connected to a cathode of the battery cell; and a negative power supply input terminal connected to an anode of the battery cell. After the power of the equipment body is turned on, the microcomputer alternately sends to the equipment body by serial communication via the connection terminal information to be used in authentication processing executed by the equipment body and information to be used in a battery residual quantity count executed by the equipment body. After the authentication processing is complete, the microcomputer sends to the equipment body information to be used in updating the battery residual quantity count executed by the equipment body.Type: GrantFiled: July 16, 2009Date of Patent: February 5, 2013Assignee: Sony CorporationInventors: Ryoichi Nakashima, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Patent number: 7864065Abstract: A battery pack detachably connectable to an equipment body to supply power to the equipment body, the battery pack including a battery cell, a microcomputer for communicating with the equipment body, a connection terminal connected to the microcomputer, a positive power supply input terminal connected to a cathode of the battery cell; and a negative power supply input terminal connected to an anode of the battery cell. After the power of the equipment body is turned on, the microcomputer alternately sends to the equipment body by serial communication via the connection terminal information to be used in authentication processing executed by the equipment body and information to be used in a battery residual quantity count executed by the equipment body. After the authentication processing is complete, the microcomputer sends to the equipment body information to be used in updating the battery residual quantity count executed by the equipment body.Type: GrantFiled: February 26, 2008Date of Patent: January 4, 2011Assignee: Sony CorporationInventors: Ryoichi Nakashima, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Patent number: 7619536Abstract: The present invention is directed to a battery residual quantity display method for performing display of battery residual quantity of a battery pack mounted at an electronic equipment and serving to supply power to the electronic equipment.Type: GrantFiled: February 20, 2006Date of Patent: November 17, 2009Assignee: Sony CorporationInventors: Ryoichi Nakashima, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Publication number: 20090280396Abstract: A battery pack detachably connectable to an equipment body to supply power to the equipment body, the battery pack including a battery cell, a microcomputer for communicating with the equipment body, a connection terminal connected to the microcomputer, a positive power supply input terminal connected to a cathode of the battery cell; and a negative power supply input terminal connected to an anode of the battery cell. After the power of the equipment body is turned on, the microcomputer alternately sends to the equipment body by serial communication via the connection terminal information to be used in authentication processing executed by the equipment body and information to be used in a battery residual quantity count executed by the equipment body. After the authentication processing is complete, the microcomputer sends to the equipment body information to be used in updating the battery residual quantity count executed by the equipment body.Type: ApplicationFiled: July 16, 2009Publication date: November 12, 2009Applicant: Sony CorporationInventors: Ryoichi NAKASHIMA, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Patent number: 7495416Abstract: A battery pack which stably implements a protection function of a secondary battery mainly under software control and reduces a circuit installation area and parts costs. The battery pack has a discharge current cutoff means and a charge current cutoff means for selectively cutting off discharge and charge currents of the secondary battery. The battery pack has a protection process means for controlling operations of the discharge current cutoff means and the charge current cutoff means in accordance with an inter-electrode voltage between positive and negative electrodes of the secondary battery. The battery pack executes an initialization process for the protection process means at a timing when a power supply voltage supplied to the protection process means reaches lowest voltage to start the protection process means.Type: GrantFiled: November 12, 2004Date of Patent: February 24, 2009Assignees: Sony Corporation, Maxim Japan Co., Ltd.Inventors: Hideyuki Sato, Ryuji Nakamichi, Yukio Tsuchiya, Kazuyasu Nawa
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Publication number: 20080266126Abstract: The present invention is directed to a battery residual quantity display method for performing display of battery residual quantity of a battery pack mounted at an electronic equipment and serving to supply power to the electronic equipment.Type: ApplicationFiled: February 20, 2006Publication date: October 30, 2008Applicant: SONY CORPORATIONInventors: Ryoichi Nakashima, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Patent number: 7425814Abstract: The temperature of a battery cell measured by a temperature measurement means is stored into a measured temperature history storage means for storing a history of temperature. An in-cell temperature inference means extracts a minimum temperature from the history of a predetermined time from the measured temperature history storage means, and infers the minimum temperature as a current temperature within the battery cell. A remaining power calculation means calculates remaining battery power based on the inferred temperature within the battery cell. Instead of directly using the measured temperature for the calculation of the remaining battery power, the inferred temperature within the battery cell is used, whereby even if the measured temperature rises rapidly, it is possible to prevent the phenomenon instantaneous increase of the calculated remaining battery power.Type: GrantFiled: November 8, 2004Date of Patent: September 16, 2008Assignee: Sony CorporationInventors: Yukio Tsuchiya, Hideyuki Sato, Kazuyasu Nawa
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Publication number: 20080150477Abstract: A battery pack detachably connectable to an equipment body to supply power to the equipment body, the battery pack including a battery cell, a microcomputer for communicating with the equipment body, a connection terminal connected to the microcomputer, a positive power supply input terminal connected to a cathode of the battery cell; and a negative power supply input terminal connected to an anode of the battery cell. After the power of the equipment body is turned on, the microcomputer alternately sends to the equipment body by serial communication via the connection terminal information to be used in authentication processing executed by the equipment body and information to be used in a battery residual quantity count executed by the equipment body. After the authentication processing is complete, the microcomputer sends to the equipment body information to be used in updating the battery residual quantity count executed by the equipment body.Type: ApplicationFiled: February 26, 2008Publication date: June 26, 2008Applicant: Sony CorporationInventors: Ryoichi NAKASHIMA, Hideyuki Sato, Yukio Tsuchiya, Kazuyasu Nawa
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Patent number: 7064522Abstract: The present invention is to provide a display for a secondary battery in response to the status thereof. For this end, the secondary battery is provided with the display section including LEDs and the switch. If the switch is operated while the secondary battery is being exhibited in a shop, displays to give an image what happens after purchase of the secondary battery are preformed in the display section. Such displays differ from each other in the charging mode and the discharging mode of the secondary battery. For example, in the charging mode, LEDs are sequentially lighted to indicate that the secondary battery is being charged. Additionally, by controlling the LEDs based on the timing calculated from the charging current magnitude through the secondary battery, it is possible to indicate such information if the charging is approaching to the final stage.Type: GrantFiled: December 8, 2003Date of Patent: June 20, 2006Assignee: Sony CorporationInventors: Kazuyasu Nawa, Yukio Tsuchiya, Hideyuki Sato, Hisashi Aoki, Tatsuya Yamazawa
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Publication number: 20050189919Abstract: The temperature of a battery cell measured by a temperature measurement means is stored into a measured temperature history storage means for storing a history of temperature. An in-cell temperature inference means extracts a minimum temperature from the history of a predetermined time from the measured temperature history storage means, and infers the minimum temperature as a current temperature within the battery cell. A remaining power calculation means calculates remaining battery power based on the inferred temperature within the battery cell. Instead of directly using the measured temperature for the calculation of the remaining battery power, the inferred temperature within the battery cell is used, whereby even if the measured temperature rises rapidly, it is possible to prevent the phenomenon instantaneous increase of the calculated remaining battery power.Type: ApplicationFiled: November 8, 2004Publication date: September 1, 2005Inventors: Yukio Tsuchiya, Hideyuki Sato, Kazuyasu Nawa
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Publication number: 20050127879Abstract: It is aimed at providing a battery pack which stably implements a protection function of a secondary battery mainly under software control and reduces a circuit installation area and parts costs. The battery pack has a discharge current cutoff means and a charge current cutoff means for selectively cutting off discharge and charge currents of the secondary battery. The battery pack has a protection process means for controlling operations of the discharge current cutoff means and the charge current cutoff means in accordance with an inter-electrode voltage between positive and negative electrodes of the secondary battery. The battery pack executes an initialization process for the protection process means at a timing (T42) when a power supply voltage supplied to the protection process means reaches lowest voltage Vpor to start the protection process means.Type: ApplicationFiled: November 12, 2004Publication date: June 16, 2005Inventors: Hideyuki Sato, Ryuji Nakamichi, Yukio Tsuchiya, Kazuyasu Nawa
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Publication number: 20040164715Abstract: The present invention is to provide a display for a secondary battery in response to the status thereof. For this end, the secondary battery is provided with the display section including LEDs and the switch. If the switch is operated while the secondary battery is being exhibited in a shop, displays to give an image what happens after purchase of the secondary battery are preformed in the display section. Such displays differ from each other in the charging mode and the discharging mode of the secondary battery. For example, in the charging mode, LEDs are sequentially lighted to indicate that the secondary battery is being charged. Additionally, by controlling the LEDs based on the timing calculated from the charging current magnitude through the secondary battery, it is possible to indicate such information if the charging is approaching to the final stage.Type: ApplicationFiled: December 8, 2003Publication date: August 26, 2004Inventors: Kazuyasu Nawa, Yukio Tsuchiya, Hideyuki Sato, Hisashi Aoki, Tatsuya Yamazawa