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Electronic clock and control method for electronic clock

A technology of electronic clocks and control circuits, applied in clocks, power circuits, electric mechanical clocks, etc., can solve the problem of reducing current consumption and achieve the effect of reducing current consumption

Active Publication Date: 2019-04-16
SEIKO INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the techniques described in Patent Document 1 and Patent Document 2, since the driving voltage used in normal hand movement and fast-forward hand movement is a constant voltage, the current consumption of an analog electronic timepiece can only be reduced to a value based on this constant voltage. value

Method used

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  • Electronic clock and control method for electronic clock
  • Electronic clock and control method for electronic clock
  • Electronic clock and control method for electronic clock

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no. 1 Embodiment approach

[0038] figure 1 It is a block diagram showing the configuration of the electronic timepiece 1 of the first embodiment. and, figure 2 It is a schematic sectional view of the electronic timepiece 1 of this embodiment.

[0039] In addition, the electronic timepiece 1 of the present embodiment is an analog electronic timepiece that displays time in an analog manner using hands.

[0040] Such as figure 1 As shown, the electronic timepiece 1 is composed of an oscillation circuit 101, a frequency division circuit 102, a control circuit 103, a solar panel 104, a secondary battery 105, a power supply voltage detection circuit 106, a constant voltage circuit 107, a fast-forward pulse generator 108, A normal travel pulse generator 109 , an auxiliary drive pulse generator 110 , a motor 111 , a rotation detection determination circuit 112 , an input unit 113 , a dial 121 , an hour hand 122 , a minute hand 123 , and a second hand 124 . Hereinafter, unless any one of the hour hand 122 ,...

no. 2 Embodiment approach

[0128] In the first embodiment, an example was described in which the control circuit uses the battery voltage to drive normal travel, and the voltage value of the battery voltage (hereinafter also referred to as the battery voltage value) is higher than a constant voltage (for example, 2.3V). Fast forwarding is performed using the battery voltage when the battery voltage value is lower than the constant voltage value (hereinafter also referred to as a constant voltage value), and fast forwarding is performed at a low voltage when the battery voltage value is equal to or lower than the constant voltage value. In this embodiment, an example will be described in which the control circuit controls normal travel and fast forward using two threshold values ​​for the battery voltage value.

[0129] Figure 8 It is a block diagram showing the configuration of the electronic timepiece 1A of this embodiment. Such as Figure 8 As shown, the electronic timepiece 1A is composed of: an o...

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Abstract

The present invention provides an electronic timepiece and a control method for the electronic timepiece, which can reduce current consumption in an analog electronic timepiece that uses normal movement and fast-forward movement for timing. The electronic timepiece has: a solar power supply; a constant voltage circuit that generates a constant voltage using power supplied from the solar power supply; and a control circuit that drives rotation at a first hand speed and a second hand speed faster than the first hand speed The body performs timing, and the control circuit selects in the following way: in the case of the first hand speed, the voltage of the solar power supply is used to drive the rotating body, and in the case of the second hand speed, the voltage between the constant voltage and the solar power At least one of the voltages drives the rotating body.

Description

technical field [0001] The invention relates to an electronic clock and a control method for the electronic clock. Background technique [0002] There are analog electronic timepieces that display the time on a dial using hands. Among analog electronic timepieces, there are also analog electronic timepieces having a timer function and a stopwatch function. In such an analog electronic timepiece, when the hands are returned to their initial positions in time correction, chronograph function, or stopwatch function, fast-forwarding of the hands is performed. And, in the analog electronic timepiece, the hands are driven by the stepping motor in the forward rotation direction and the opposite reverse rotation direction. In addition, the normal rotation direction is a clockwise rotation direction. In addition, the hands include: an hour hand that rotates once in 12 hours, a minute hand that rotates once in 60 minutes, a second hand that rotates once per minute, and a function h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04C9/08G04C10/00
CPCG04C9/08G04C10/00G04G19/08G04G19/10G04C10/02G04G19/00G04G3/00G04G17/02G04G19/06
Inventor 山本幸祐高仓昭小笠原健治小山和宏佐久本和实前泽保井桥朋宽松本亚弓
Owner SEIKO INSTR INC