公开(公告)号：US20170060096A1

公开(公告)日：2017-03-02

申请号：US15244178

申请日：2016-08-23

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Kazumi SAKUMOTO ,  Kotaro WATANABE ,  Minoru SANO

IPC: G04C3/14 ,  G04G3/00

CPC classification number: G04G19/12

Abstract: An electronic timepiece which can reduce currents flowing in a pull-down resistor or a pull-up resistor when a crown switch is turned on includes a first switch that is connected to a signal line, a second switch, and a one-shot pulse signal generation circuit. The first switch is inserted into the signal line. One end of the second switch is connected to the signal line on a rear stage of the first switch. The other end of the second switch is connected to a power source. The one-shot pulse signal generation circuit generates a one-shot pulse signal by using a reference clock signal. The second switch is controlled by the one-shot pulse signal.

Abstract translation: 当冠状开关接通时，可以减少在下拉电阻或上拉电阻中流动的电流的电子钟表包括连接到信号线，第二开关和单触发脉冲信号的第一开关 一代电路。 第一个开关插入信号线。 第二开关的一端连接到第一开关的后级上的信号线。 第二开关的另一端连接到电源。 单触发脉冲信号产生电路通过使用参考时钟信号产生单触发脉冲信号。 第二个开关由单触发脉冲信号控制。

公开(公告)号：US20160094206A1

公开(公告)日：2016-03-31

申请号：US14865694

申请日：2015-09-25

Applicant: Seiko Instruments Inc.

Inventor： Minoru SANO

IPC: H03K3/0231 ,  H03K3/014 ,  H03K5/24

CPC classification number: H03K3/0231 ,  H03K3/014 ,  H03K5/24

Abstract: Provided is a CR oscillator circuit that achieves a small occupied area and good oscillation frequency accuracy while having small current consumption. The CR oscillator circuit includes: a reference voltage circuit configured to switch and output a reference voltage; a first constant current source configured to charge a capacitor; a second constant current source configured to discharge the capacitor; a voltage comparator configured to compare voltages of the reference voltage circuit and the capacitor; and a logic circuit. The logic circuit is configured to switch between the reference voltage circuit and the constant current source simultaneously in response to an output signal of the voltage comparator.

Abstract translation: 提供了一种CR振荡器电路，其具有小的占用面积和良好的振荡频率精度，同时具有小的电流消耗。 CR振荡电路包括：参考电压电路，被配置为开关并输出参考电压; 配置为对电容器充电的第一恒流源; 配置成使电容器放电的第二恒流源; 电压比较器，被配置为比较所述参考电压电路和所述电容器的电压; 和逻辑电路。 逻辑电路被配置为响应于电压比较器的输出信号同时在参考电压电路和恒定电流源之间切换。