Electronic watch transmitting/receiving system
AssigneeCitizen Watch Co., Ltd.
InventorsHaruhiko Higuchi, Akiyoshi Murakami
Life of this patent
Estimating the term…
Abstract
A data transmitting/receiving system is configured so as to send data to an analog-type watch, without the need to make direct electrical contact thereto and without influencing the drive of the hands of the watch. When a timing signal that is sent from the watch is received, a data transmitting unit performs transmission. The watch does not receive data at other times, and this receiving operation is performed intermittently.
Claims34
A data transmitting/receiving system which is configured by an electronic watch and a data transmittal unit, separate from the watch, which generates a data signal, a coil within said electronic watch being used by a data receiving means of said electronic watch to receive the data signal from said data transmitting unit, said electronic watch having a timing signal generation means, which generates a timing signal, and said data transmitting unit having a timing signal receiving means that receives a timing signal which is output from said timing signal generation means, said data transmitting unit transmitting the data signal to said electronic watch in coordination with a received timing signal, and said data receiving means in said electronic watch intermittently receiving data which is sent from said data transmitting unit in a time duration during which predetermined data is transmitted from said data transmitting unit.
A data transmitting/receiving system including an electronic watch, said system comprising:
- an electric watch having a timing signal generation means for generating a timing signal;
- and
- a data transmitting unit, separate from the electric watch, which generates a data signal,
- said system being so configured that said data signal generated from said data transmitting unit is transmitted to said electric watch and received by a data receiving means of said electric watch utilizing a coil within said electric watch;
- wherein said data transmitting unit has a timing signal receiving means that receives a timing signal which is output from said timing signal generation means while said data transmitting unit transmits the data signal to said electric watch in coordination with a received timing signal, and said data receiving means in said electric watch receives said data signal which is sent from said data transmitting unit only at predetermined intervals which corresponds to intervals during which said data signal is sent from said data transmitting unit, and further wherein said data receiving means stops further reception of data when the lack of data output from said data transmitting unit verified at a first data receiving timing within a present one of said intervals.
A data transmitting/receiving system of an electronic watch having a data transmitting unit that generates a data signal and a data receiving means that receives said data signal from said data transmitting unit, utilizing a coil within said electronic watch, said electronic watch comprising a timing signal generation means that generates a timing signal, said data transmitting unit further being provided with:
- a timing signal receiving means that receives the timing signal that is output from said coil, so that said data transmitting unit transmits a data signal in synchronization with said received timing signal;
- a receiving coil for receiving the timing signal;
- and
- a transmitting coil for transmitting data;
- and further wherein said transmitting coil has a reactance that is smaller than reactance of said receiving coil.
Dependencies are inferred from the claim text.