Title:
DATA TRANSMISSION/RECEPTION SYSTEM OF ELECTRONIC TIMEPIECE
Document Type and Number:
WIPO Patent Application WO/1994/016366
Kind Code:
A1
Abstract:
A data reception system of an analog electronic timepiece comprising a data transmitter for generating data signals and an electronic timepiece functioning also as a coil for driving hands and receiving the data signals from the data transmitter. The timepiece is provided with timing signal generation means for generating a timing signal, while the data transmitter is provided with timing signal reception means for receiving the timing signal outputted from the hand driving coil so that the data transmitter can transmit the data signals in synchronism with the timing signal received. Transmission/reception can be made under a normal operation state without stopping the timepice at the time of functional operations. Accordingly, there is no longer need of time setting after completion of the functional operations.
Inventors:
SAKUYAMA MASAO (JP)
Application Number:
PCT/JP1993/001930
Publication Date:
July 21, 1994
Filing Date:
December 28, 1993
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
SAKUYAMA MASAO (JP)
SAKUYAMA MASAO (JP)
International Classes:
G04G21/04; G04G21/06; G04R20/26; G04R60/02; (IPC1-7): G04C11/02; G04D7/12; G04C3/02
Foreign References:
| JPS5489672A | 1979-07-16 | |||
| JPS57201886A | 1982-12-10 | |||
| JPH0210189A | 1990-01-12 | |||
| JPH03218494A | 1991-09-26 |
Other References:
See also references of EP 0635771A4
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