[특허]Electronic watch

[미국특허] Electronic watch 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G04B-001/00
출원번호	US-0043911 (1998-03-31)
우선권정보	JP-0004480 (1997-01-14)
국제출원번호	PCT/JP97/02671 (1997-07-31)
§371/§102 date	19980331 (19980331)
국제공개번호	WO-9806013 (1998-02-12)
발명자 / 주소	Nagata Yoichi,JPX Hiraishi Hisato,JPX
출원인 / 주소	Citizen Watch Co., Ltd., JPX
대리인 / 주소	Armstrong, Westerman, Hattori, McLeland & Naughton
인용정보	피인용 횟수 : 33 인용 특허 : 5

초록 ▼

An electronic watch is provided with an electric power generator for generating electric energy by external energy, electric power charger for charging the electric energy generated by the electric power generator, a watch driving system comprising a watch driving circuit and a time display sub-system, operated by electric energy supplied by the electric power charger, a stored electric power detector for detecting an amount of electric energy charged in the electric power charger, and a controller. Operation of at least the time display sub-system of the watch driving system is suspended when the amount of electric energy stored as detected by the stored electric power detector falls below a preset standard value, and thereafter, operation of the suspended portion of the watch driving system is resumed upon detecting conditions for reactivation, such operation being continued at least for a period when preset conditions are met. Thus, when the electronic watch is put to use again after it is left unused for a long time, the watch driving system does not come to a stop immediately after resumption of operation of time display, ensuring stable display of time.

대표청구항 ▼

[ What is claimed is:] [1.] An electronic watch comprising:an electric power generator for generating electric energy by external energy;electric power storage means for storing the electric energy generated by the electric power generator;a watch driving system comprising a watch driving circuit and a time display sub-system, operated by electric energy supplied by the electric power storage means;a stored electric power detector for detecting an amount of electric energy stored in the electric power storage means; anda controller whereby operation of at least the time display sub-system of the watch driving system is suspended when the amount of electric energy stored as detected by the stored electric power detector falls below a preset standard value, and thereafter, operation of the suspended portion of the watch driving system is resumed upon detecting conditions for reactivation, such operation being continued at least for a period when preset conditions are met;said preset standard value having a margin of safety to enable the watch driving system to be driven for a short while.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

Shoji Hideyuki (Tokyo JPX) Usui Kazufumi (Tokyo JPX), Electronic equipment with solar cell.
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Ohtawa Shuzi (Tokyo JPX), Electronic timepiece driven by a plurality of stepping motors and powered by a solar cell.
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Kamiwaki Osamu (Suwa JPX) Onishi Wataru (Suwa JPX), Electronic wristwatch including auxiliary power supply.
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Frantz Richard J. (Cheshire CT), Optional alarm and battery backup system for a talking timepiece.
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Beyers ; Jr. ; Billy Wesley, Timekeeping apparatus with power line dropout provisions.
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이 특허를 인용한 특허 (33) 인용/피인용 타임라인 분석

Martin, Jean-Claude; Guanter, Jean-Charles, Analogue electronic watch having a device for resetting the time following a power shortage.
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Kawaguchi, Takashi; Kitahara, Joji; Okeya, Makoto, Drive control apparatus, electronic apparatus, method of controlling drive of electronic apparatus, drive control program, and recording medium.
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Okeya Makoto,JPX ; Yabe Hiroshi,JPX, Electronic apparatus and control method for electronic apparatus.
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Godat, Yves, Electronic circuit controlling the operation of peripheral members of the watch.
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Fujisawa, Teruhiko; Okeya, Makoto, Electronic device and control method for electronic device.
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Nagahama, Reiko; Mukaiyama, Keiichi, Electronic device having power generation function, control method of electronic device having power generation function, and portable electronic device having power generation function, and control method of portable electronic device having power generation function.
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Okeya Makoto,JPX ; Fujisawa Teruhiko,JPX ; Yabe Hiroshi,JPX ; Kitahara Joji,JPX ; Kojima Hiroyuki,JPX ; Shimura Noriaki,JPX, Electronic equipment and control method for electronic equipment.
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Aoki, Nobuhiro, Electronic timepiece.
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Fujita,Kenji; Murakami,Akiyoshi; Higuchi,Haruhiko; Funahashi,Motoki, Electronic timepiece.
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Kasuo, Tomoo; Ochiai, Fumiaki, Electronic timepiece.
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Nagata, Yoichi, Electronic timepiece.
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Shinji Nakamiya JP; Teruhiko Fujisawa JP; Sho Matsuzaki JP, Electronic timepiece and method for controlling the same.
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Kamiyama, Yasuo; Murakami, Tomomi; Mafune, Masao; Nagata, Yoichi, Electronic timepiece having power generating function.
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Kitahara, Joji, Electronic timepiece with generator function.
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Ichikawa, Masakazu; Kitazawa, Isao; Sakuyama, Masao; Okigami, Tomio, Electronic timepiece, information processing device, method of displaying charged condition of secondary cell, and computer product.
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Kim, Hyung Jong; Kim, Jong Hwan, Mobile terminal and method for controlling charging thereof.
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Shimizu, Hiroshi; Sakumoto, Kazumi; Ogasawara, Kenji; Yamamoto, Kosuke; Honmura, Keishi; Manaka, Saburo; Takakura, Akira, Power consumption control device, timepiece device, electronic device, power consumption control method, power consumption control program.
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Nagata Yoichi,JPX, Power generating system.
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Kawahara, Hisashi; Higuchi, Haruhiko, Rechargeable electronic watch and driving method of rechargeable electronic watch.
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Ninomiya, Masaya, Semiconductor device and electronic timepiece.
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Park, Jung-Hoon, Semiconductor device and system including the same.
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Lee, Doyoung; Kim, Yongsin; Park, Hyorim, Smart watch and control method for the same.
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Lee, Doyoung; Kim, Yongsin; Park, Hyorim, Smart watch and control method for the same.
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Lee, Doyoung; Kim, Yongsin; Park, Hyorim, Smart watch and control method for the same.
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Manaka, Saburo; Takakura, Akira; Ogasawara, Kenji; Sakumoto, Kazumi; Kamiyama, Shotaro; Honmura, Keishi; Yamamoto, Kosuke; Shimizu, Hiroshi, Stepping motor control circuit and analogue electronic watch.
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O'Neill,Terrence J.; Gollnick,Robin W.; Bihler,Roland W., Time keeping system with automatic daylight savings time adjustment.
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Okeya,Makoto, Time measurement device and method of controlling the time measurement device.
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Pikula, Michael A.; Gollnick, Robin W.; O'Neill, Terrence J., Wireless synchronous time system.
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Pikula,Michael A.; Gollnick,Robin W.; O'Neill,Terrence J., Wireless synchronous time system.
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Pikula,Michael A.; Gollnick,Robin W.; O'Neill,Terrence J., Wireless synchronous time system.
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Pikula,Michael A.; Gollnick,Robin W.; O'Neill,Terrence J., Wireless synchronous time system.
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Pikula,Michael A.; Gollnick,Robin W.; O'Neill,Terrence J., Wireless synchronous time system.
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Abbott,Mark A.; Cayo, Jr.,Jerald M.; Thompson,Darrel L.; Brykowski,Derek J.; O'Neill,Terrence J.; Stoffer,James F., Wireless synchronous time system with solar powered transceiver.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Electronic watch 원문보기