Patent US3659059A successfully refreshed from Google Patents.
US3659059A
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US
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Method and apparatus for suppressing and substituting signals
Assignee: Individual
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Filing: 1969-07-07
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Granted: 1972-04-25
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Expires: 1989-07-07
Abstract
Abstract A method and apparatus for progressively suppressing a primary electronic signal, and for substituting a secondary electronic signal for said suppressed primary signal, in response to a tone control frequency. The secondary signal and tone control frequency may both be recorded on a common magnetic tape which may be selectively played at preselected discrete time intervals.
Inventors
- 👤 Leon H Ivy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:38
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
111 words
A method of suppressing a primary signal and of substituting a secondary signal for said suppressed primary signal, comprising generating a primary signal during an indeterminate time interval, generating a tone control signal at an increasing frequency during a first preselected discrete portion of said indeterminate interval and at a constant preselected frequency during a subsequent second preselected discrete portion of said indeterminate interval, gradually suppressing said primary signal according to said increasing frequency during said first preselected portion of said indeterminate interval, generating a secondary signal during said second discrete portion beginning with and during such suppression of said primary signal, and substituting said secondary signal for said primary signal.
Claim 2
Independent Claim
111 words
A method of suppressing a primary signal and of substituting a secondary signal for said suppressed primary signal, comprising generating a primary signal during an indeterminate time interval, generating a tone control signal at an increasing frequency during a first preselected discrete portion of said indeterminate interval and at a constant preselected frequency during a subsequent second preselected discrete portion of said indeterminate interval, gradually suppressing said primary signal according to said increasing frequency during said first preselected portion of said indeterminate interval, generating a secondary signal during said second discrete portion beginning with and during such suppression of said primary signal, and substituting said secondary signal for said primary signal.
Claim 3
Dependent Claim
46 words
The method described in claim 1, including the steps of terminating said secondary signal at the expiration of said second time portion reducing the frequency of said tone control signal upon said termination of said secondary signal, and replacing said terminated signal with said primary signaL.
Claim 4
Dependent Claim
20 words
The method described in claim 2, wherein said primary signal is gradually restored following discontinuance of said tone control frequency.
Claim 5
Independent Claim
175 words
A system for suppressing a primary signal in favor of a secondary signal, comprising primary signalling means for continually generating a primary signal, tape deck means for generating a secondary signal during a first discrete time interval and a tone control frequency during a second discrete time interval commencing prior to and extending through said first interval, power means for producing a supply of power to said primary signalling means, rotatable motor means for driving said tape deck means, normally-open relay means for connecting said motor means to said power means, timer means for providing an actuating pulse to close said relay means for the duration of said actuating pulse, tone sensitive means responsive to said tone control frequency for generating a first control voltage signal functionally related in magnitude to the frequency of said tone control frequency and a second control signal for keeping said relay means closed after expiration of said actuating pulse, and fader means responsive to said first control voltage for opposing said primary signal generated by said primary signalling means.
Claim 6
Independent Claim
175 words
A system for suppressing a primary signal in favor of a secondary signal, comprising primary signalling means for continually generating a primary signal, tape deck means for generating a secondary signal during a first discrete time interval and a tone control frequency during a second discrete time interval commencing prior to and extending through said first interval, power means for producing a supply of power to said primary signalling means, rotatable motor means for driving said tape deck means, normally-open relay means for connecting said motor means to said power means, timer means for providing an actuating pulse to close said relay means for the duration of said actuating pulse, tone sensitive means responsive to said tone control frequency for generating a first control voltage signal functionally related in magnitude to the frequency of said tone control frequency and a second control signal for keeping said relay means closed after expiration of said actuating pulse, and fader means responsive to said first control voltage for opposing said primary signal generated by said primary signalling means.
Claim 7
Dependent Claim
38 words
The system described in claim 4, wherein said tone control frequency is functionally dependent on the rotational velocity of said motor means, and wherein said first control voltage is functionally dependent in magnitude on said tone control frequency.
Claim 8
Dependent Claim
32 words
The system described in claim 5, wherein said system further includes utilization means interconnected to receive said primary signal from said fader means and said secondary signal from said tape deck means.
Claim 9
Dependent Claim
78 words
The system described in claim 6, wherein said fader means includes first circuit means for receiving said primary signal from said primary signalling means, second circuit means for transmitting said received primary signal to said utilization means, and third circuit means for receiving and putting said first control voltage into opposition to said primary signal at a magnitude great enough to block said primary signal from said utilization means when said motor means attains a predetermined rotational velocity.
Claim 10
Dependent Claim
22 words
The system described in claim 7, wherein said first time interval commences after said motor means has attained said predetermined rotational velocity.
Claim 11
Dependent Claim
140 words
A switching system for suppressing a primary signal in favor of a secondary signal, comprising a primary signal means for generating a primary signal, a secondary signal means for generating a tone control signal during a first discrete time interval and a secondary signal during a second discrete time interval commencing after the beginning of said first time interval, said secondary signal means further generating said tone control signal at an increased frequency during the period between said first and second discrete intervals and at a constant preselected frequency throughout said second discrete time interval, and a control means responsive to said tone control signal for gradually suppressing said primary signal as a function of said increasing frequency of said tone control signal and for thereafter substituting said secondary signal for said suppressed primary signal during said second time interval.
Claim 12
Dependent Claim
140 words
A switching system for suppressing a primary signal in favor of a secondary signal, comprising a primary signal means for generating a primary signal, a secondary signal means for generating a tone control signal during a first discrete time interval and a secondary signal during a second discrete time interval commencing after the beginning of said first time interval, said secondary signal means further generating said tone control signal at an increased frequency during the period between said first and second discrete intervals and at a constant preselected frequency throughout said second discrete time interval, and a control means responsive to said tone control signal for gradually suppressing said primary signal as a function of said increasing frequency of said tone control signal and for thereafter substituting said secondary signal for said suppressed primary signal during said second time interval.
Claim 13
Dependent Claim
51 words
The system as described in claim 9 wherein said control means further includes tone sensitive means for generating a control voltage having an amplitude functionally related to the frequency of said tone control signal, and fading means for receiving and suppressing said primary signal as a function of said control voltage.
Claim 14
Dependent Claim
60 words
The system as described in claim 10 wherein said fading means includes a stage for receiving and transmitting said primary signal, and suppression means responsive to said control voltage provided by said tone sensitive means fOr providing a blocking voltage to said stage having an amplitude functionally related to the amplitude of said control voltage from said tone sensitive means.
Claim 15
Dependent Claim
73 words
The system as described in claim 11 wherein said suppression means includes resonance means responsive to said tone control signal for providing an actuating voltage, biasing means for producing said blocking voltage with a magnitude functionally related to the magnitude of said actuating voltage and for applying said blocking voltage to said receiving and transmitting stage in opposition to said primary signal, and storage means for regulating the magnitude of said actuating voltage.
Claim 16
Dependent Claim
43 words
The system as described in claim 12 wherein said storage means accumulates a charge from said actuating voltage and wherein said storage means discharges said accumulated charge in opposition to said primary signal upon termination of said blocking voltage by said biasing circuit.
Claim 17
Dependent Claim
32 words
The system described in claim 13, wherein said suppression means further includes means for generating an energizing voltage for maintaining said secondary signal source energized during generation of said tone control signal.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |