Electronic wristwatch having dialing tone generator
First Claim
Patent Images
1. A dialing tone generator-equipped electronic wristwatch comprising:
- oscillator circuit means for producing an oscillator frequency signal having a frequency of about 32 KHz;
time-measuring means for frequency-dividing the oscillator frequency signal from said oscillator circuit means, to obtain time information;
display means for displaying the time information obtained by said time-measuring means;
multiplier means for multiplying the oscillator frequency signal of about 32 KHz, to derive a multiplier reference signal;
memory means for storing a plurality of telephone number data of the dialing numbers;
selection operation switch means for selecting desired telephone number data from said plurality of telephone number data in the memory means; and
dialing tone signal generating means which, upon receipt of the telephone number data thus selected and a multiplier reference signal, frequency-divides the multiplier reference signal and delivers an output dialing tone signal corresponding to the telephone number data.
0 Assignments
0 Petitions
Accused Products
Abstract
A wristwatch equipped with a dialing tone generator employs a low-frequency oscillator as a reference signal oscillator. The reference signal is frequency-divided into first and second frequency-divided signals, the first frequency-divided signal being used to produce a low-frequency tone signal, the second frequency-divided signal being used to produce a high-frequency tone signal. Both these tone signals are rectangular waveforms which are filtered in corresponding low-pass filters, to output first and second sine-wave signals, which are then synthesized with each other to produce a desired dialing tone.
-
Citations
10 Claims
-
1. A dialing tone generator-equipped electronic wristwatch comprising:
-
oscillator circuit means for producing an oscillator frequency signal having a frequency of about 32 KHz; time-measuring means for frequency-dividing the oscillator frequency signal from said oscillator circuit means, to obtain time information; display means for displaying the time information obtained by said time-measuring means; multiplier means for multiplying the oscillator frequency signal of about 32 KHz, to derive a multiplier reference signal; memory means for storing a plurality of telephone number data of the dialing numbers; selection operation switch means for selecting desired telephone number data from said plurality of telephone number data in the memory means; and
dialing tone signal generating means which, upon receipt of the telephone number data thus selected and a multiplier reference signal, frequency-divides the multiplier reference signal and delivers an output dialing tone signal corresponding to the telephone number data. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A dialing tone generator-equipped electronic wristwatch, comprising:
-
oscillator circuit means for producing an oscillation signal having a predetermined frequency; dividing means for outputting a reference frequency signal, including means for frequency-dividing said oscillation signal of said predetermined frequency to produce said reference frequency signal; display means for displaying time information based on said reference frequency signal; multiplier means for multiplying the oscillator frequency signal having said predetermined frequency, to provide a multiplier reference signal; memory means for storing a plurality of telephone number data corresponding to telephone numbers to be dialed; selection operation switch means for selecting desired telephone number data from said plurality of telephone number data in said memory means;
andialing tone signal generating means responsive to the selected telephone number data and said multiplier reference signal, for frequency-dividing said multiplier reference signal and for delivering an output dialing tone signal corresponding to the telephone number data. - View Dependent Claims (7, 8, 9, 10)
-
Specification