US3725805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information enhancing amplifier
Assignee: Individual
•
Filing: 1972-06-07
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Granted: 1973-04-03
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Expires: 1992-06-07
Abstract
Abstract An information enhancing amplifier for insertion in a communication system. The amplifier includes a dual input signal representative of information. The input signal also includes noise. One circuit cathode detects the modulation substantially to the exclusion of the noise. The detected signal is applied to control the amplification of the other circuit to provide an output signal representative of virtually the information only.
Inventors
- 👤 L Orne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/20; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03G3/26; H03G7/00; H03G7/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
An information enhancing amplifier for inclusion in a communication system comprising a first transformer having a primary and secondary, said transformer receiving a varying informational electrical signal representative of speech, said received signal also including noise, a voltage divider connected across said secondary, said voltage divider providing an output signal of one-tenth the amplitude of the signal across said secondary, a first amplifying tube receiving said output signal from said voltage divider, first means to precisely control the threshold level of said first amplifying tube to prevent conduction therein until the receipt of an input signal, a second amplifier tube receiving the signal from across said secondary, a cathode follower detector receiving the output signal from said second amplifier tube, second means to precisely control the threshold level of said cathode follower detector to prevent conduction therein until receipt of an input signal, said threshold level being also precisely set to exclude virtually all of the noise, said cathode follower detector providing a varying DC bias voltage in accordance with the received varying informational electrical signal, means to apply said varying DC bias voltage to said first amplifying tube to control the amplification thereof in accordance with the variation in voltage, and a second transformer connected to said first amplifying tube to provide an output signal therefrom.
Claim 2
Dependent Claim
217 words
An information enhancing amplifier for inclusion in a communication system comprising a first transformer having a primary and secondary, said transformer receiving a varying informational electrical signal representative of speech, said received signal also including noise, a voltage divider connected across said secondary, said voltage divider providing an output signal of one-tenth the amplitude of the signal across said secondary, a first amplifying tube receiving said output signal from said voltage divider, first means to precisely control the threshold level of said first amplifying tube to prevent conduction therein until the receipt of an input signal, a second amplifier tube receiving the signal from across said secondary, a cathode follower detector receiving the output signal from said second amplifier tube, second means to precisely control the threshold level of said cathode follower detector to prevent conduction therein until receipt of an input signal, said threshold level being also precisely set to exclude virtually all of the noise, said cathode follower detector providing a varying DC bias voltage in accordance with the received varying informational electrical signal, means to apply said varying DC bias voltage to said first amplifying tube to control the amplification thereof in accordance with the variation in voltage, and a second transformer connected to said first amplifying tube to provide an output signal therefrom.
Claim 3
Dependent Claim
24 words
An information enhancing amplifier as described in claim 1 wherein said voltage divider consists of a first and second resistor in a series arrangement.
Claim 4
Dependent Claim
34 words
An information enhancing amplifier as described in claim 2 further including a stable positive voltage source for said first and second amplifying tubes and a stable negative voltage source for said cathode follower detector.
References Cited (Backward Citations)
US2756328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |