Patents by Inventor Yasuyuki Kanai
Yasuyuki Kanai 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: 9195560Abstract: A device includes a retrieval unit that retrieves information regarding usage conditions including operating time periods indicating extents of utilizing corresponding plural functions included in a mobile station by a user; a storing unit that stores, for each of operating mode of the mobile station, average consumed current values for the corresponding plural functions; a calculating unit that calculates, for each of the operating modes, a battery usable time period by calculating an added value, the added value being obtained by adding a product of the average consumed current value for one of the functions and the operating time period of the one of the functions over the plural functions, and by dividing a capacity value of a battery included in the mobile station by the added value; and a display unit that displays the battery usable time periods to the user.Type: GrantFiled: January 13, 2012Date of Patent: November 24, 2015Assignee: NTT DOCOMO, INC.Inventors: Naoji Nomura, Yasuyuki Kanai
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Patent number: 8996324Abstract: A battery-state monitoring apparatus includes: a secondary battery 200 supplying an electric power to portable equipment 300; and an operation processing part 50 that can detect a battery state of the secondary battery 200 in a detection mode to detect the battery state of the secondary battery 200, the operation processing part using the secondary battery 200 as a power source, wherein the battery-state monitoring apparatus includes a start-up current detecting part 31 detecting a start-up of the portable equipment 300, and wherein the operation processing part 50 waits for a detection of the battery state in a standby mode in which power consumption is smaller than the detection mode until the start-up is detected by the start-up current detecting part 31, and, on the other hand, the operation processing part 50 detects, by intermittently performing a temporary return from the standby mode to the detection mode, the battery state of the secondary battery in a return period during which the return is made.Type: GrantFiled: July 7, 2009Date of Patent: March 31, 2015Assignees: Mitsumi Electric Co., Ltd., NTT DOCOMO, INC.Inventors: Yoshihide Majima, Mitsuhiro Takahashi, Kazuhiko Takeno, Haruo Uemura, Yasuyuki Kanai, Takayuki Kanai
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Patent number: 8847543Abstract: A secondary battery charging system includes a secondary battery charging device and a power generation device that generates a charging current. The secondary battery charging device controls the charging a secondary battery, which has a protection timer that counts a first elapsed time from a start of charging. The secondary battery charging device includes a charging switch that controls a supply of the charging current, a time management timer portion that counts a second elapsed time starting from a point at which the charging switch becomes conductive and performs a charging stop determination and that counts a third elapsed time starting from a point at which the charging switch is cut off and performs a charging start determination, and a charging control portion that causes the charging switch to be conductive or cut off based on results of the charging stop determination and the charging start determination.Type: GrantFiled: February 13, 2012Date of Patent: September 30, 2014Assignee: NTT DoCoMo, Inc.Inventors: Shigeki Yagi, Hirokazu Serita, Mitsuharu Chiba, Hiroyuki Konishi, Akiko Asahata, Yasuyuki Kanai, Takayuki Kanai, Naoji Nomura
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Patent number: 8749204Abstract: A battery condition detector configured to detect a micro short circuit of a rechargeable battery is disclosed. The battery condition detector includes a processing part configured to calculate the remaining capacity and the full-charge capacity of a rechargeable battery 200 and to determine the micro short circuit of the rechargeable battery 200 by detecting an overcharge of the rechargeable battery 200 based on a charged capacity charged during the charging of the rechargeable battery 200, the remaining capacity calculated at a calculation time immediately before the start of the charging, and the full-charge capacity calculated before the start of the charging; and a communications part 70 configured to output a signal according to the determination result of the processing part 50.Type: GrantFiled: September 9, 2009Date of Patent: June 10, 2014Assignees: Mitsumi Electric Co., Ltd., NTT DoCoMo, Inc.Inventors: Yoshihide Majima, Keiichi Kitamura, Kazuhiko Takeno, Yasuyuki Kanai, Haruo Uemura
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Publication number: 20130173947Abstract: A device includes a retrieval unit that retrieves information regarding usage conditions including operating time periods indicating extents of utilizing corresponding plural functions included in a mobile station by a user; a storing unit that stores, for each of operating mode of the mobile station, average consumed current values for the corresponding plural functions; a calculating unit that calculates, for each of the operating modes, a battery usable time period by calculating an added value, the added value being obtained by adding a product of the average consumed current value for one of the functions and the operating time period of the one of the functions over the plural functions, and by dividing a capacity value of a battery included in the mobile station by the added value; and a display unit that displays the battery usable time periods to the user.Type: ApplicationFiled: January 13, 2012Publication date: July 4, 2013Applicant: NTT DOCOMO, INC.Inventors: Naoji Nomura, yasuyuki Kanai
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Publication number: 20120206086Abstract: A secondary battery charging system includes a secondary battery charging device and a power generation device that generates a charging current. The secondary battery charging device controls the charging a secondary battery, which has a protection timer that counts a first elapsed time from a start of charging. The secondary battery charging device includes a charging switch that controls a supply of the charging current, a time management timer portion that counts a second elapsed time starting from a point at which the charging switch becomes conductive and performs a charging stop determination and that counts a third elapsed time starting from a point at which the charging switch is cut off and performs a charging start determination, and a charging control portion that causes the charging switch to be conductive or cut off based on results of the charging stop determination and the charging start determination.Type: ApplicationFiled: February 13, 2012Publication date: August 16, 2012Inventors: Shigeki Yagi, Hirokazu SERITA, Mitsuharu CHIBA, Hiroyuki KONISHI, Akiko ASAHATA, Yasuyuki KANAI, Takayuki KANAI, Naoji NOMURA
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Publication number: 20120121952Abstract: A battery status detecting device, the battery status detecting device being configured to detect a status of a rechargeable battery which powers an electronic device, the battery status detecting device includes a capacity degradation rate calculating part configured to calculate a capacity degradation rate of the rechargeable battery; an internal resistance value calculating part configured to calculate an internal resistance value of the rechargeable battery; a determining part configured to determine necessity of exchange of the rechargeable battery based on the capacity degradation rate calculated by the capacity degradation rate calculating part and the internal resistance value calculated by the internal resistance value calculating part; and an outputting part configured to output a signal corresponding to a determination result of the determining part, wherein the determining part determines that the exchange of the rechargeable battery is necessary in a case where one of or both of the capacity degrType: ApplicationFiled: August 28, 2009Publication date: May 17, 2012Inventors: Yoshihide Majima, Kazuhiko Takeno, Yasuyuki Kanai, Haruo Uemura
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Publication number: 20110187329Abstract: A battery condition detector configured to detect a micro short circuit of a rechargeable battery is disclosed. The battery condition detector includes a processing part configured to calculate the remaining capacity and the full-charge capacity of a rechargeable battery 200 and to determine the micro short circuit of the rechargeable battery 200 by detecting an overcharge of the rechargeable battery 200 based on a charged capacity charged during the charging of the rechargeable battery 200, the remaining capacity calculated at a calculation time immediately before the start of the charging, and the full-charge capacity calculated before the start of the charging; and a communications part 70 configured to output a signal according to the determination result of the processing part 50.Type: ApplicationFiled: September 9, 2009Publication date: August 4, 2011Applicants: MITSUMI ELECTRIC CO., LTD., NTT DOCOMO, INC.Inventors: Yoshihide Majima, Keiichi Kitamura, Kazuhiko Takeno, Yasuyuki Kanai, Haruo Uemura
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Publication number: 20110119005Abstract: A battery-state monitoring apparatus includes: a secondary battery 200 supplying an electric power to portable equipment 300; and an operation processing part 50 that can detect a battery state of the secondary battery 200 in a detection mode to detect the battery state of the secondary battery 200, the operation processing part using the secondary battery 200 as a power source, wherein the battery-state monitoring apparatus includes a start-up current detecting part 31 detecting a start-up of the portable equipment 300, and wherein the operation processing part 50 waits for a detection of the battery state in a standby mode in which power consumption is smaller than the detection mode until the start-up is detected by the start-up current detecting part 31, and, on the other hand, the operation processing part 50 detects, by intermittently performing a temporary return from the standby mode to the detection mode, the battery state of the secondary battery in a return period during which the return is made.Type: ApplicationFiled: July 7, 2009Publication date: May 19, 2011Applicants: MITSUMI ELECTRIC CO., LTD., NTT DOCOMO, INC.Inventors: Yoshihide Majima, Mitsuhiro Takahashi, Kazuhiko Takeno, Haruo Uemura, Yasuyuki Kanai, Takayuki Kanai
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Publication number: 20110112782Abstract: A battery status detection device for detecting the status of a secondary battery 200 supplying power to a mobile device 300 includes a voltage detection unit 20 detecting voltages of the secondary battery 200; a current detection unit 30 detecting charge/discharge currents of the secondary battery 200; an arithmetic processing unit 50 calculating an internal resistance value of the secondary battery 200 based on a voltage difference between the voltages detected by the voltage detection unit 20 before and after the start of charging the secondary battery 200 and a current difference between the charge/discharge currents detected by the current detection unit 30 before and after the start of charging the secondary battery 200 and determining whether the secondary battery 200 is degraded based on the calculated internal resistance value; and a communication processing unit 70 outputting a signal indicating the determination result of the arithmetic processing unit 50.Type: ApplicationFiled: July 7, 2009Publication date: May 12, 2011Applicants: MITSUMI ELECTRIC CO., LTD, NTT DOCOMOInventors: Yoshihide Majima, Kazuhiko Takeno, Haruo Uemura, Yasuyuki Kanai, Takayuki Kanai
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Patent number: 7449866Abstract: A booster circuit generates a boosted output by boosting a low voltage output supplied as a target to be boosted and feeds back a part of the boosted output, an output by the booster circuit itself, to the booster circuit as operation energy. An auxiliary booster circuit outputs start-up energy generated based on a low voltage output to the booster circuit as start-up energy that is necessary for starting up the booster circuit.Type: GrantFiled: October 26, 2007Date of Patent: November 11, 2008Assignee: Nippon Telegraph and Telephone CorporationInventors: Yasuyuki Kanai, Masato Mino, Satoshi Matsumoto, Kazuya Akiyama, Kousuke Katsura, Junichi Ohwaki, Satoshi Nakayama
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Patent number: 7345458Abstract: A booster circuit generates a boosted output by boosting a low voltage output supplied as a target to be boosted and feeds back a part of the boosted output, an output by the booster circuit itself, to the booster circuit as operation energy. An auxiliary booster circuit outputs start-up energy generated based on a low voltage output to the booster circuit as start-up energy that is necessary for starting up the booster circuit.Type: GrantFiled: July 7, 2004Date of Patent: March 18, 2008Assignee: Nippon Telegraph and Telephone CorporationInventors: Yasuyuki Kanai, Masato Mino, Satoshi Matsumoto, Kazuya Akiyama, Kousuke Katsura, Junichi Ohwaki, Satoshi Nakayama
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Publication number: 20080062729Abstract: A booster circuit generates a boosted output by boosting a low voltage output supplied as a target to be boosted and feeds back a part of the boosted output, an output by the booster circuit itself, to the booster circuit as operation energy. An auxiliary booster circuit outputs start-up energy generated based on a low voltage output to the booster circuit as start-up energy that is necessary for starting up the booster circuit.Type: ApplicationFiled: October 26, 2007Publication date: March 13, 2008Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyuki Kanai, Masato Mino, Satoshi Matsumoto, Kazuya Akiyama, Kousuke Katsura, Junichi Ohwaki, Satoshi Nakayama
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Publication number: 20060152200Abstract: A booster circuit generates a boosted output by boosting a low voltage output supplied as a target to be boosted and feeds back a part of the boosted output, an output by the booster circuit itself, to the booster circuit as operation energy. An auxiliary booster circuit outputs start-up energy generated based on a low voltage output to the booster circuit as start-up energy that is necessary for starting up the booster circuit.Type: ApplicationFiled: July 7, 2004Publication date: July 13, 2006Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuyuki Kanai, Masato Mino, Satoshi Matsumoto, Kazuya Akiyama, Kousuke Katsura, Junichi Ohwaki, Satoshi Nakayama
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Patent number: 4802831Abstract: A compressor has stationary and orbiting scroll members formed thereon with spiral wraps engaged with each other to define compression chambers which, when the orbiting scroll member is moved relative to the stationary scroll member, are radially inwardly moved while decreasing their volumes. Each scroll member is composed of a metallic base scroll member having a spiral wrap formed on one side and a coating layer of a resin compound formed on the said side of the scroll member, including the surfaces of the wrap. The coating layer is molded by placing the base scroll member in a mold cavity with a space left between the said side of the base scroll member and a mold part and by injecting the resin compound into the space.Type: GrantFiled: April 13, 1987Date of Patent: February 7, 1989Assignee: Hitachi, Ltd.Inventors: Kazutaka Suefuji, Aizo Kaneda, Yasuyuki Kanai, Shozo Nakamura, Tetsuya Arata, Katsuaki Kikuchi, Takao Senshu, Kimiaki Nakakado, Eiji Maeda, Sadatsohi Minakawa