Patent US3818368A successfully refreshed from Google Patents.
US3818368A
Expired / Lapsed
US
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Plural oscillator system for generating simultaneous pairs of sequential tones
Assignee: Individual
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Filing: 1973-02-28
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Granted: 1974-06-18
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Expires: 1993-02-28
Abstract
Abstract A first oscillator is rendered operative by a pulse to produce a first tone of limited duration. A second oscillator has frequency determining elements which are sequentially coupled in circuit by a sequence of pulses applied to the second oscillator, to produce a sequence of second tones in time coincidence with the first tone.
Inventors
- 👤 K Wycoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:51
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In a communication single side-band transmitter, the combination comprising a first oscillator for generating a first tone, first means for producing a first pulse of limited duration, said first oscillator being coupled to said first means and responsive to said first pulse to produce said first tone for the duration of said first pulse, a second oscillator having frequency-determining elements and being operative to produce second tones having frequencies respectively in accordance with the frequency-determining elements in circuit with said second oscillator, second means for producing a sequence of a plurality of second pulses respectively of limited durations, said second oscillator being coupled to said second means and responsive to said second pulses to produce a sequence of a plurality of second tones respectively for the durations of said second pulses, means coupled to the outputs of said first and second oscillators for combining the tones therefrom and thereby provide a sequence of a plurality of second tones and a continuous first tone simultaneously with said plurality of second tones.
Claim 2
Dependent Claim
170 words
In a communication single side-band transmitter, the combination comprising a first oscillator for generating a first tone, first means for producing a first pulse of limited duration, said first oscillator being coupled to said first means and responsive to said first pulse to produce said first tone for the duration of said first pulse, a second oscillator having frequency-determining elements and being operative to produce second tones having frequencies respectively in accordance with the frequency-determining elements in circuit with said second oscillator, second means for producing a sequence of a plurality of second pulses respectively of limited durations, said second oscillator being coupled to said second means and responsive to said second pulses to produce a sequence of a plurality of second tones respectively for the durations of said second pulses, means coupled to the outputs of said first and second oscillators for combining the tones therefrom and thereby provide a sequence of a plurality of second tones and a continuous first tone simultaneously with said plurality of second tones.
Claim 3
Dependent Claim
42 words
In the communication single side-band transmitter of claim 1, said second means being operable to produce a sequence of two second pulses and said second oscillator being operative in response to said second pulses to produce a sequence of two second tones.
Claim 4
Dependent Claim
42 words
In the communication single side-band transmitter of claim 1, said first tone and the first of said second tones commencing at substantially the same time, and said first tone and the last of said second tones terminating at substantially the same time.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |