公开(公告)号：US20220057752A1

公开(公告)日：2022-02-24

申请号：US17445304

申请日：2021-08-17

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Shoichiro Morita ,  Riko Tsuboi ,  Daisuke Yamada ,  Hiroyuki Takahashi

IPC: G04B19/02 ,  G04B19/04 ,  G04C10/04

Abstract: A reciprocating display mechanism performing predetermined display by reciprocating a hand within a fixed area includes a hand capable of reciprocating within the fixed area, a hand driving wheel that drives the hand and includes a wheel, a transmission wheel that rotates the hand driving wheel by engaging with a tooth of the wheel, and a biasing member that biases the hand in one direction of the reciprocating, wherein the wheel includes an angle area corresponding to the fixed area and a region adjacent to the angle area, the angle area provided with teeth and a part of the region adjacent to the angle area provided with an idle region in which the transmission wheel idles, and the one direction biasing by the biasing member is a direction in which the tooth adjacent to the idle region engages with the transmission wheel when the idle region faces the transmission wheel.

公开(公告)号：US12204283B2

公开(公告)日：2025-01-21

申请号：US17445304

申请日：2021-08-17

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Shoichiro Morita ,  Riko Tsuboi ,  Daisuke Yamada ,  Hiroyuki Takahashi

IPC: G04B19/02 ,  G04B19/04 ,  G04C10/04

Abstract: A reciprocating display mechanism performing predetermined display by reciprocating a hand within a fixed area includes a hand capable of reciprocating within the fixed area, a hand driving wheel that drives the hand and includes a wheel, a transmission wheel that rotates the hand driving wheel by engaging with a tooth of the wheel, and a biasing member that biases the hand in one direction of the reciprocating, wherein the wheel includes an angle area corresponding to the fixed area and a region adjacent to the angle area, the angle area provided with teeth and a part of the region adjacent to the angle area provided with an idle region in which the transmission wheel idles, and the one direction biasing by the biasing member is a direction in which the tooth adjacent to the idle region engages with the transmission wheel when the idle region faces the transmission wheel.

公开(公告)号：US11226593B2

公开(公告)日：2022-01-18

申请号：US16496473

申请日：2018-03-28

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Makoto Watanabe ,  Katsuyoshi Aihara ,  Daisuke Matsuoh ,  Daisuke Yamada ,  Ryutaro Uemura

IPC: G04C9/00 ,  G04B19/04

Abstract: An analog electronic watch includes watch's internal time, and controls rotation of a group of indicators based on the watch's internal time. A terminal appliance stops the rotation of the group of indicators, generates an image of the indicators and the dial plate with an imaging unit, detects current display positions of the group of indicators in identification areas as part of the image of the indicators and the dial plate, generates current display time information based on the current display positions, and generates display time correction information based on a difference between the current display time information and the watch's internal time information. The analog electronic watch corrects the display positions of the group of indicators based on the display time correction information. There are provided an analog electronic watch system and an analog electronic watch that can reduce a time required for display time correction.