Horology: time measuring systems or devices – Chronological – With power monitor
Patent
1997-11-20
1999-11-02
Miska, Vit
Horology: time measuring systems or devices
Chronological
With power monitor
368204, G04B 900, G04B 100
Patent
active
059783184
ABSTRACT:
A timepiece device mechanism for indicating the restart of pointer movements after recharging following a halt condition. The timepiece device includes a display for displaying time information wherein the display is driven by a display-drive. A termination-detector monitors the operation of the display and outputs a termination detection signal when detecting a halt of the display. A storage unit receives and holds the termination detection signal and outputs a termination-storage signal in response thereto. A power supply outputs a voltage and a power-supply-voltage detector detects the voltage-level output of the power supply and outputs a power-supply-voltage detection signal when the voltage is greater than or equal to a first reference voltage that is higher than a movement-start voltage. A modulation signal generator receives the termination storage signal and power-supply-voltage detection signal and outputs a modulation signal when the power-supply-voltage detection signal is output while the termination-storage signal is being input to the modulation-signal generator. The display-drive receives the modulation signal and performs modulated driving of the display in response thereto.
REFERENCES:
patent: 3998043 (1976-12-01), Tamaru et al.
patent: 4223522 (1980-09-01), Nomura et al.
patent: 4262349 (1981-04-01), Sekiya et al.
patent: 4398832 (1983-08-01), Maire et al.
patent: 4714352 (1987-12-01), Ganter
patent: 5446702 (1995-08-01), Mossuz et al.
Kawaguchi Takashi
Kubota Masaru
Miska Vit
Seiko Epson Corporation
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