Timekeeping device

Horology: time measuring systems or devices – Time interval – Electrical or electromechanical

Reexamination Certificate

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Details

C368S110000

Reexamination Certificate

active

11656508

ABSTRACT:
A timekeeping device enables easily knowing how much playing time has passed and can automatically keep track of time added to compensate for stoppage time. The timekeeping device1has a input unit2, a display unit3, an alarm unit5, and a control unit4. The control unit4has a timekeeping unit41including a first timer41A and a second timer41B, a input control unit42, a timekeeping control unit43, a display control unit44, a alarm control unit45, and memory46. The alarm unit5outputs a first alarm when the second timer41B is keeping time and the time kept by the first timer41A reaches a preset time setting. When the second timer is not keeping time and the time kept by the first timer reaches the preset time, the alarm unit5outputs the second alarm.

REFERENCES:
patent: 4505595 (1985-03-01), Rose et al.
patent: 4637732 (1987-01-01), Jones et al.
patent: 4657405 (1987-04-01), Nakazawa
patent: 4769797 (1988-09-01), Murakami
patent: 6144620 (2000-11-01), dePoortere
patent: 6603711 (2003-08-01), Calace
patent: 7218216 (2007-05-01), Uehran
patent: 2004/0008589 (2004-01-01), McMillan et al.
patent: 2005/0135196 (2005-06-01), Rund
patent: 2003-344568 (2003-12-01), None

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