公开(公告)号：EP0952500A4

公开(公告)日：2004-09-29

申请号：EP98954791

申请日：1998-11-20

申请人： SEIKO EPSON CORP

发明人： OKEYA MAKOTO ,  FUJISAWA TERUHIKO ,  YABE HIROSHI ,  KITAHARA JOJI ,  KOJIMA HIROYUKI ,  SHIMURA NORIAKI

IPC分类号： G04C10/00 ,  G04G19/12 ,  G04G99/00 ,  G04G1/00

CPC分类号： G04G19/12 ,  G04C10/00 ,  Y10T307/799 ,  Y10T307/858

摘要： A portable electronic device is provided with a carried-state detector which detects whether or not the device is being carried. Wasteful power consumption of the device when not in use can be reduced by shifting the operation of the device from a normal operation mode to a power saving mode while the device is not being carried, namely, while the user does not use the device. The power consumption of an electronic device (timer) incorporating a power generator which generates electric power by converting first energy (motion, pressure, and heat) into second energy, namely, electrical energy, is reduced by detecting whether or not the power generator generates electric power, namely, whether or not the device is being carried by means of a power generation detecting circuit and by shifting the operation of the device to a power saving mode when the no-power generating time of the equipment exceeds a prescribed period of time. Therefore, an electronic device (timer) whose energy consumption can be reduced without giving any inconvenience to the user by shifting the operation of the device to the power saving mode when the device is not carried by the user or when the power generator of the device does not generate electric power even while the device is being carried by the user.

公开(公告)号：EP1055980A4

公开(公告)日：2005-01-19

申请号：EP99959797

申请日：1999-12-14

申请人： SEIKO EPSON CORP

发明人： OKEYA MAKOTO ,  SHIMURA NORIAKI ,  KITAHARA JOJI ,  KOJIMA HIROYUKI ,  YABE HIROSHI

IPC分类号： G04C3/14 ,  G04G19/08 ,  G04C3/00 ,  G04C10/04 ,  G04G19/00

CPC分类号： G04C3/143 ,  G04G19/08

摘要： An electronic device having a plurality of motors do not cause drop of the power supply voltage and large difference in hand driving timings even when the motors are operated. When the electronic device is an electronic watch having a second motor for driving a second hand and an hour/minute hand motor for driving an hour/minute hand, and when a second auxiliary pulse signal is outputted to the second motor at the driving timing of the second hand, detection of the magnetic field around the hour/minute motor and detection of the rotation of the hour/minute motor are not performed at and after the driving timing of the hour/minute hand. An hour/minute auxiliary pulse signal is outputted to the hour/minute motor to drive the second hand and the hour/minute hand.

公开(公告)号：EP0932250A4

公开(公告)日：2004-04-07

申请号：EP98936735

申请日：1998-08-11

申请人： SEIKO EPSON CORP

发明人： KOJIMA HIROYUKI ,  SHIMURA NORIAKI ,  KITAHARA JOJI

IPC分类号： G04C3/14 ,  G04C9/08 ,  H02P8/00 ,  H02P8/02

CPC分类号： H02P8/02 ,  G04C3/14 ,  G04C3/143

摘要： An electronic device in which the fast forwarding of a stepper motor is performed as in a time measuring instrument and which is provided with a detecting coil wound coaxially with a rotor driving coil to detect a reversely induced voltage appearing at the detecting coil with a detection circuit and, after a driving pulse is supplied, detect the rotation of the rotor by detecting the first peak on the same polarity side as that of the first appearing driving pulse. Driving pulses can be supplied at a high speed while confirming the rotation of the rotor by supplying the next pulse at the detecting timing of the rotation. Therefore, fast forwarding of the stepper motor can be stably accelerated without causing incorrect drive of the hands.

摘要翻译： 如时间测量仪器那样进行步进电动机的快进的电子设备，该电子设备具备与转子驱动线圈同轴地卷绕的检测线圈，利用检测电路检测出现在检测线圈上的反向感应电压 并且在提供驱动脉冲之后，通过检测与第一次出现的驱动脉冲相同极性侧的第一峰值来检测转子的旋转。 通过在旋转的检测定时提供下一个脉冲，在确认转子的旋转的同时可以高速提供驱动脉冲。 因此，可以稳定地加速步进电机的快进，而不会导致手的错误驱动。