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1. 发明专利

JP2004132854A System for detecting position of electric timepiece 有权
公开(公告)号：JP2004132854A
公开(公告)日：2004-04-30
申请号：JP2002298163
申请日：2002-10-11
申请人： Citizen Watch Co Ltd , シチズン時計株式会社
发明人： FUKUDA MASAMI , IGARASHI SEIKI , KOMINE SHINICHI
IPC分类号： G01D5/24 , G04C3/00
摘要： PROBLEM TO BE SOLVED: To enhance the reliability of a system for detecting the position of an electric timepiece.
SOLUTION: This system for detecting the position of the electric timepiece comprises a transmission circuit which outputs a plurality of transmission signals from a plurality of output signals of an oscillation frequency dividing circuit, a means which contains a plurality of transmission electrodes transmitting the transmission signals, a rotating body and a reception electrode, and modulates the transmission signals, a reception circuit which inputs the modulation signal of the means received by the reception electrode and outputs the reception signal. The transmission electrodes and the reception electrode are arranged so as to be opposed to the almost entire periphery of the rotating plane of the rotating body.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2003035788A Electronic timepiece and its drive method 审中-公开
标题翻译：电子计时器及其驱动方法
公开(公告)号：JP2003035788A
公开(公告)日：2003-02-07
申请号：JP2001222438
申请日：2001-07-24
申请人： Citizen Watch Co Ltd , シチズン時計株式会社
发明人： KITAZAWA ISAO , SAKUYAMA MASAO , ICHIKAWA MASAKAZU , IGARASHI SEIKI , KIHARA HIROYUKI , MURAKAMI EIKI
IPC分类号： G04G19/00 , G04C10/00 , G04C10/04 , G04G99/00 , G04G1/00
摘要： PROBLEM TO BE SOLVED: To prevent a controller (CPU) from falling in malfunction state of microcomputer by making driving the power consumption to exceed accumulated power in the case that the controller (CPU) drives an hour and minute hands drive part from a forced microcomputer stopping state of output voltage in a power save 2 state (PS2).
SOLUTION: In the power save 2 state (SP2), the controller 121 detects the output voltage of a secondary battery 113 or primary battery 213 with a voltage detection means 114. In the case of the output voltage of 1.25 V or less, the controller 121 switches the state of the electronic timepiece to a power save 1 state (PS1).
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了防止控制器（CPU）在控制器（CPU）从强制微型计算机驱动小时和分针驱动部件的情况下通过使驱动功率消耗超过累积功率来使微处理器的故障状态下降省电状态（PS2）中输出电压的停止状态。解决方案：在节电2状态（SP2）中，控制器121利用电压检测装置114检测二次电池113或一次电池213的输出电压。在输出电压为1.25V以下的情况下，控制器 121将电子表的状态切换到省电1状态（PS1）。

3. 发明专利

JP2000009865A ELECTRONIC CLOCK WITH POWER GENERATOR 失效
公开(公告)号：JP2000009865A
公开(公告)日：2000-01-14
申请号：JP17437598
申请日：1998-06-22
申请人： CITIZEN WATCH CO LTD
发明人： SUGANO FUMIO , SATO KOICHI , IGARASHI SEIKI
IPC分类号： G04G19/06 , G04C10/00 , G04G19/00 , G04G99/00 , G04G1/00
摘要： PROBLEM TO BE SOLVED: To reduce the time until normal handling of a needle is performed by prohibiting the passage of all drive pulses and stopping the drive of a step motor when a drive judgment circuit judges as non-rotation when a control circuit is passing a drive pulse for a low voltage with the maximum energy. SOLUTION: When a power supply voltage is equal to or less than 1.15 V, the voltage of a secondary power supply 13 drops due to charge shortage. When it becomes 1.15 V or less, this conditions is detected by a power supply voltage detection circuit 14 and a rotation judgment signal is sent from a drive judgment circuit 18 to a control circuit 15. The control circuit 15 prohibits the passage of a normal drive pulse and allows the passage of a drive pulse for a low voltage, instead. The drive pulse for a low voltage is a rapid pulse for every two seconds which is different in handling of a needle from a normal drive pulse, namely a two-second needle-handling pulse, and a user can detect that a voltage has dropped from the needle handling state of a second needle. Further, when the control circuit 15 is allowing the drive pulse for low voltage with the maximum energy to pass, it prohibits the passage of all drive pulses if the drive judgment circuit 18 judges to be non-rotation.

4. 发明专利

JPH11258365A ELECTRONIC WATCH 失效
公开(公告)号：JPH11258365A
公开(公告)日：1999-09-24
申请号：JP6508598
申请日：1998-03-16
申请人： CITIZEN WATCH CO LTD
发明人： SATO KOICHI , SUGANO FUMIO , IGARASHI SEIKI
IPC分类号： G04C3/14 , G04C3/00 , G04C10/04
摘要： PROBLEM TO BE SOLVED: To obtain an electronic watch where it is easy to find even a small second band is making an alarm motion by moving the hand for alarming by a first pulse. and a second pulse that is outputted to a specific range value from the output of the first pulse. SOLUTION: An electronic watch is provided with an alarm function by the abnormal movement of a small second hand 1, and the abnormal movement of clock hands is made by a first pulse and a second pulse that is outputted in 250 ms or more and less than 1 second from the first pulse. The small second hand 1 is first located at the position of the small second hand 1a. Then, the small hand 1 moves to the position of a small second hand 1b by the first pulse. After that, the small second hand 1 moves to the position of a small second hand 1c by the second pulse that is outputted 250 ms later. Therefore, the small second hand seems to stop at the position of the small second hand 1b momentarily while the small second hand 1 moves from the position of the small second hand 1a to that of the small second hand 1c for a user, thus informing the user of the advance of 2 seconds due to the small second hand 1.

5. 发明专利

JPH0755961A SOLAR CELL CLOCK 失效
公开(公告)号：JPH0755961A
公开(公告)日：1995-03-03
申请号：JP6752494
申请日：1994-04-06
申请人： CITIZEN WATCH CO LTD
发明人： SASE MASAHIRO , ICHIKAWA SHINGO , IGARASHI SEIKI
IPC分类号： G04C10/02 , G04G19/00 , G04G99/00 , H01L31/04 , G04G1/00
摘要： PURPOSE:To obtain a solar cell clock which enables charging of a capacitor of a large capacity even under a low illuminance and of which the driving characteristic of a motor is stable. CONSTITUTION:In a solar cell clock equipped with a capacitor 3 of a large capacity and a capacitor 11 of a small capacity, a time division signal preparing circuit is provided and the capacitor 3 of the large capacity and the capacitor 11 of the small capacity are charged alternately by a division signal when re-irradiation of light is started after the capacitor 3 of the large capacity finishes discharge, while a motor is driven in the state of the capacitor 11 of the small capacity being cut off from a solar cell 1, at the time of a quick start. Accordingly, the capacitor 3 of the large capacity can be charged even under a low illuminance and, besides, the driving characteristic of the motor is made stable.

6. 发明专利

JPH0359492A HAND TYPE WORLD WATCH 失效
公开(公告)号：JPH0359492A
公开(公告)日：1991-03-14
申请号：JP19556789
申请日：1989-07-28
申请人： CITIZEN WATCH CO LTD
发明人： SUZUKI NORITOSHI , CHO TAKASHI , SASE MASAHIRO , IGARASHI SEIKI
IPC分类号： G04C3/14 , G04C3/00
摘要： PURPOSE:To display the time and date of an area by a simple indicating mechanism by specifying an area mark on a dial with an area indication hand and controlling displays of a day and a time by the movement of the hand with the relation between its direction and the international date line. CONSTITUTION:An area is specified with the area indication hand 204 among marks of respective areas which are displayed on the dial 201 and have respec tive local standard times and the time and date of the area are displayed with a dual hand 205 and a day hand 206 for a world time display. At this time, respective hands 204 - 206 are driven by stepping motors which have driving circuits respectively and the numbers of signals driving the hands 204 and 205 are counted to store their positions in a counting means. Then a discriminating circuit means judges in which direction the hands 204 and 205 reach specific positions and a control circuit advances the hand 205 in a corresponding direc tion and advances the hand 206 by one day when the hand 204 passes on the international date line.

7. 发明专利

JP2010203782A Radio wave correction watch 有权
标题翻译：无线电波校正手表
公开(公告)号：JP2010203782A
公开(公告)日：2010-09-16
申请号：JP2009046421
申请日：2009-02-27
申请人： Citizen Holdings Co Ltd , Citizen Watch Co Ltd , シチズンホールディングス株式会社 , シチズン時計株式会社
发明人： HASUMI TAKAYUKI , SAJO KATSUYUKI , YASOOKA TADASHI , IGARASHI SEIKI , KUSUNOKI KOICHI
IPC分类号： G04C3/00 , G04R20/00 , G04R20/08 , G04R20/10 , G04R60/12 , G04R60/14
摘要： PROBLEM TO BE SOLVED: To provide a radio wave correction watch efficiently arranging a plurality of components in a limited narrow space inside an outer case, while reducing an influence of reception noise on its antenna. SOLUTION: In the radio wave correction watch, a battery 27 and a second motor 24b whose frequency of driving for driving a second hand and a minute hand is the highest are arranged near a winding stem 26, and the antenna 21 is arranged on the opposite side of the winding stem 26 with respect to the center part of the outer case 2. Inside a region surrounded by the second motor 24b, the battery 27, and the antenna 21, and near the periphery of the region, a first to fourth gear trains 25a, 25b, 25c, and 25d, and first, third and fourth motors 24a, 24c, and 24d other than the second motor 24b are arranged. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种无线电波校正表，在外部壳体内有限的窄空间内有效地布置多个分量，同时减少其天线上的接收噪声的影响。解决方案：在无线电波校正表中，在上条柄杆26附近布置有用于驱动秒针和分针的驱动频率最高的电池27和第二电动机24b，并且天线21被布置在相对于外壳2的中心部分的相对侧上。在由第二电动机24b，电池27和天线21包围的区域内，并且在该区域的周边附近的第一到第四齿轮系25a，25b，25c和25d，以及除了第二电动机24b之外的第一，第三和第四电动机24a，24c和24d。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2004163128A Position detecting system for electric timepiece 审中-公开
公开(公告)号：JP2004163128A
公开(公告)日：2004-06-10
申请号：JP2002326388
申请日：2002-11-11
申请人： Citizen Watch Co Ltd , シチズン時計株式会社
发明人： FUKUDA MASAMI , IGARASHI SEIKI , KOMINE SHINICHI
IPC分类号： G01D5/24 , G04C3/00
摘要： PROBLEM TO BE SOLVED: To actualize a position detecting system for an electric timepiece, slim-structured, needing little electricity to work, and having high reliability.
SOLUTION: This system comprises a plurality of transmission electrodes 12 and 13 formed on a printed circuit board 8 for transmitting transmission signals, a reception electrode 11 formed on the same circuit board 8, a detection wheel 5 having a communication electrode 6 disposed opposite to the transmission electrodes 12 and 13 and to the reception electrode 11, and an IC 10 including a position detecting circuit for receiving a communication signal induced in the communication electrode 6 as a reception signal by the reception electrode 11, inputting the reception signal thereinto to perform phase-comparison with a reference signal, and detecting an angular rotating position of a wheel train.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2004037280A Position detection system of electric timepiece 有权
公开(公告)号：JP2004037280A
公开(公告)日：2004-02-05
申请号：JP2002195391
申请日：2002-07-04
申请人： Citizen Watch Co Ltd , シチズン時計株式会社
发明人： FUKUDA MASAMI , KOMINE SHINICHI , IGARASHI SEIKI
IPC分类号： G01D5/24 , G04C3/00
摘要： PROBLEM TO BE SOLVED: To enhance the reliability of a position detection system of an electric timepiece.
SOLUTION: The position detection system is provided with a transmitting circuit which outputs two or more sinusoidal transmission signals from the two or more output signals of an oscillating and frequency dividing circuit, a signal modulating means which comprises two or more transmitting electrodes for transmitting the two or more transmission signals, a rotator, and a receiving electrode, and modulates the two or more transmission signals, a receiving circuit which receives as an input, a signal modulated by the signal modulating means and received by the receiving electrode and outputs a received signal, a reference signal shaping circuit which shapes the two or more transmission signals of the transmitting circuit and outputs a reference signal, and a detection circuit which detects information on the mechanical position of the rotor of the signal modulating means by comparing the received signal of the receiving circuit with the reference signal of the reference signal shaping circuit.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003255061A ELECTRIC CLOCK 审中-公开
公开(公告)号：JP2003255061A
公开(公告)日：2003-09-10
申请号：JP2002056936
申请日：2002-03-04
申请人： CITIZEN WATCH CO LTD
发明人： MOROKAWA SHIGERU , FUKUDA MASAMI , KOMINE SHINICHI , IWAKURA YOSHIKI , IGARASHI SEIKI
IPC分类号： G01D5/245 , G04C3/00
摘要： PROBLEM TO BE SOLVED: To solve the problems wherein conventional systems, such as a mechanical contact switch structure and a position detection mechanism by an optical sensor have the problems of the restriction of arrangement space, increased energy consumption, wear resistance properties, detection resolution, costs, and the like, even though an electric clock requiring the detection of the position of a clock wheel train, such as the correction of the deviation of the display clock of a precision clock such as a radio-controlled clock and an annual rate clock, and the automatic correction of the end of a month in a calender. SOLUTION: A plurality of transmission lines for simultaneously transmitting a plurality of AC electric fields through a wheel train are formed inside a clock. The position information of the wheel train is extracted from a change, in the propagation characteristics of a plurality of transmission line. Then, the position of a mechanical wheel train is subjected to electrical detection control, thus performing synchronization control of a mechanical closing mechanism by a low-power electric clocking mechanism. As an actual example, a signal having different phase and frequency is outputted from transmission electrodes 41 and 42, while pinching the toothed wheel of a detection wheel 43 made of metal having a hole 45. A modulated combined signal is received by a reception electrode 44 depending on the presence or absence of the hole 45, and the position of the detection wheel 43 is detected from the information. COPYRIGHT: (C)2003,JPO

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