US3329902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gain control with delayed decay
Assignee: Van Der Heem BV
•
Filing: 1964-01-29
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Granted: 1967-07-04
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Lindt Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:55
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3052; H03G3/3073; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/06; H04L; H04L27/00; H04L27/02; H04L27/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A DEVICE FOR AUTOMATIC GAIN CONTROL COMPRISING A DETECTOR HAVING AN INPUT FOR A RECEIVED SIGNAL AND HAVING AN OUTPUT WHICH SUPPLIES A CONTROL SIGNAL, WHEREIN THE IMPROVEMENT COMPRISES A MEMORY CIRCUIT CONNECTED TO THE OUTPUT OF THE DETECTOR, WHICH STORES THE CONTROL SIGNAL AND HAS AN OUTPUT WHICH SUPPLIES A GAIN CONTROL SIGNAL PROPORTIONAL TO THE STORED SIGNAL, A DIFFERENTIATOR CONNECTED TO THE OUTPUT OF THE DETECTOR, HAVING AN OUTPUT WHICH SUPPLIES A PULSE IN RESPONSE TO A SUDDEN DECREASE IN THE STRENGTH OF THE CONTROL SIGNAL, A MONOSTABLE MULTIVIBRATOR CONNECTED TO THE OUTPUT OF THE DIFFERENTIATOR TO RECEIVE A PULSE FOR CHANGING THE MULTIVIBRATOR TO ITS METASTABLE CONDITION, AND A CIRCUIT WHICH CONNECTS THE MULTIVIBRATOR TO THE MEMORY CIRCUIT AND WHICH IS ACTUATED, UPON THE RETURN OF THE MULTIVIBRATOR TO ITS STABLE CONDITION, TO RESET THE MEMORY CIRCUIT TO THE EXISTING VALUE OF THE CONTROL SIGNAL.
Claim 2
Independent Claim
148 words
A DEVICE FOR AUTOMATIC GAIN CONTROL COMPRISING A DETECTOR HAVING AN INPUT FOR A RECEIVED SIGNAL AND HAVING AN OUTPUT WHICH SUPPLIES A CONTROL SIGNAL, WHEREIN THE IMPROVEMENT COMPRISES A MEMORY CIRCUIT CONNECTED TO THE OUTPUT OF THE DETECTOR, WHICH STORES THE CONTROL SIGNAL AND HAS AN OUTPUT WHICH SUPPLIES A GAIN CONTROL SIGNAL PROPORTIONAL TO THE STORED SIGNAL, A DIFFERENTIATOR CONNECTED TO THE OUTPUT OF THE DETECTOR, HAVING AN OUTPUT WHICH SUPPLIES A PULSE IN RESPONSE TO A SUDDEN DECREASE IN THE STRENGTH OF THE CONTROL SIGNAL, A MONOSTABLE MULTIVIBRATOR CONNECTED TO THE OUTPUT OF THE DIFFERENTIATOR TO RECEIVE A PULSE FOR CHANGING THE MULTIVIBRATOR TO ITS METASTABLE CONDITION, AND A CIRCUIT WHICH CONNECTS THE MULTIVIBRATOR TO THE MEMORY CIRCUIT AND WHICH IS ACTUATED, UPON THE RETURN OF THE MULTIVIBRATOR TO ITS STABLE CONDITION, TO RESET THE MEMORY CIRCUIT TO THE EXISTING VALUE OF THE CONTROL SIGNAL.
References Cited (Backward Citations)
US3230458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |