US4864604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic wristwatch having dialing tone generator
Assignee: Casio Computer Co Ltd
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Filing: 1988-04-21
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Granted: 1989-09-05
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Expires: 2008-04-21
Abstract
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.
Inventors
- 👤 Toshiharu Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:27
CPC Classifications
G; G04; G04G; G04G13/00; H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/275; H04M1/30; H04M1/50; H04M1/505
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
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.
Claim 2
Dependent Claim
144 words
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.
Claim 3
Dependent Claim
32 words
An electronic wristwatch as claimed in claim 1, wherein telephone number data stored in said memory means is composed of area code number data, local call number data, and division code data.
Claim 4
Dependent Claim
79 words
An electronic wristwatch as claimed in claim 1, wherein telephone number data stored in said memory means is composed of area code number data and local call number data, and said selection operation switch means includes first switch means for supplying both of the area code number data and local call number data to said dialing tone signal generating means and second switch means for supplying only the local call number data to said dialing tone signal generating means.
Claim 5
Dependent Claim
55 words
An electronic wristwatch as claimed in claim 3, wherein said first switch means operates at a predetermined time interval after a push button type external operation switch is operated for the first time, and said second switch means operates when said push button type external operation switch is operated again within said predetermined time interval.
Claim 6
Dependent Claim
31 words
An electronic wristwatch according to claim 1, further including display control means for switchingly displaying, on said display means, telephone number data which is selected by said selection operation switch means.
Claim 7
Dependent Claim
150 words
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; an dialing 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.
Claim 8
Dependent Claim
150 words
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; an dialing 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.
Claim 9
Dependent Claim
36 words
An electronic wristwatch as claimed in claim 6, wherein said memory means is adapted to store said telephone number data in the form of area code number data, local call number data, and division code data.
Claim 10
Dependent Claim
84 words
An electrode wristwatch as claimed in claim 6, wherein said memory means is adapted to store said telephone number data in the form of area code number data and local call number data, and said selection operation switch means includes first switch means for supplying both of the area code number data and the local call number data to said dialing tone signal generating means, and second switch means for supplying only the local call number data to said dialing tone signal generating means.
Claim 11
Dependent Claim
60 words
An electronic wristwatch as claimed in claim 8, wherein said first switch means is adapted to operate in a predetermined time interval after an external push button type operation switch is operated a first time, and said second switch means is adapted to operate when the external push button type operation switch is operated again within said predetermined time interval.
Claim 12
Dependent Claim
30 words
An electronic wristwatch according to claim 6, including display control means for successively displaying on said display means, telephone number data that is selected by said selection operation switch means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |