Invention Grant
- Patent Title: Time measurement device
- Patent Title (中): 时间测量装置
-
Application No.: US14692111Application Date: 2015-04-21
-
Publication No.: US09563176B2Publication Date: 2017-02-07
- Inventor: Takashi Kawaguchi , Katsuaki Karasawa , Hideyuki Arai
- Applicant: SEIKO EPSON CORPORATION , CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP2014-089327 20140423
- Main IPC: G04F8/00
- IPC: G04F8/00 ; G04F7/08

Abstract:
A time measurement device includes: a higher-digit indication hand that is configured to indicate a higher digit of a measured time; a lower-digit indication hand that is configured to reciprocate and indicate a lower digit of the measured time on a forward route and on a return route; a first drive unit that is configured to drive the higher-digit indication hand; a second drive unit that is configured to drive the lower-digit indication hand; a time counter that is configured to measure a time; a first drive controller that is configured to control the first drive unit to drive the higher-digit indication hand based on the measured time measured by the time counter; and a second drive controller that is configured to control the second drive unit to drive the lower-digit indication hand based on the measured time measured by the time counter, the second drive controller reciprocating the lower-digit indication hand at a predetermined period, and the first drive controller moving the higher-digit indication hand at a time interval equal to or less than a half of the predetermined period.
Public/Granted literature
- US20150309479A1 TIME MEASUREMENT DEVICE Public/Granted day:2015-10-29
Information query