US4011514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory circuit for tuning of an electronically tuned receiver to a preselected station
Assignee: UNITECH PRZEDSIEBIORSTWO TECHNICZNO HAND LOWE
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Filing: 1975-04-28
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Granted: 1977-03-08
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Expires: 1995-04-28
Abstract
Abstract A circuit for storing of tuning-in to preselected stations for receivers provided with electronic tuning, in which the voltage supplied from a charged capacitor onto variable reactance elements, such as capacitance diodes, included in tuned resonant circuits of the receiver, required to realize the tuning-in to preselected stations, is stored by means of electrochemical integrators. The storage is realized by recording the electric charge fed to the capacitor with constant capacitance to obtain thereon a voltage having a value required to tune-in the receiver to reception of the desired station. At reproducing of the tuning-in to the given station, the charging circuit of the capacitor supplying the tuning voltage becomes blocked on feeding to the capacitor the previously recorded quantity of the electric charge, which is signalled by instantaneous increase of the resistance of the electrochemical integrator. The control of the charging circuit becomes switched-over on the automatic tuning circuit by means of a signal from the detector.
Inventors
- 👤 Jerzy Wroblewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:40
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/20; H03J7/24; H03J7/26; H03J5/00; H03J5/02; H03J5/0218
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
222 words
An arrangement for storing a tuning voltage of preselected stations for receivers having electronic tuning with elements of variable reactance having elements comprising capacitance diodes and being dependent on the applied bias voltage, comprising in combination, input circuit means having elements comprising capacitance diodes, said input circuit means being tuned for reception of electrical signals at predetermined frequency by means of said capacitance diodes, said input circuit means comprising tuned resonant circuit means, a superheterodyne oscillator having elements comprising capacitance diodes and being connected to said input circuit means, said oscillator being also tuned by the capacitance diodes in said oscillator, a detector connected to the output of said input circuit means, capacitor means connected to said input circuit means and said oscillator for storing the tuning voltage applied to said elements in said input circuit means and said oscillator, a charging circuit connected to said capacitor means and controlled from the output of said detector means, at least one electrochemical integrator connected in series with said capacitor means, switching means connected between said integrator and said capacitor means for reversing interconnections between said integrator and said capacitor means, a voltage step detector connected in parallel with said integrator, said charging circuit being controllable from said voltage step detector or from the output of said detector means after actuating said switching means.
Claim 2
Dependent Claim
222 words
An arrangement for storing a tuning voltage of preselected stations for receivers having electronic tuning with elements of variable reactance having elements comprising capacitance diodes and being dependent on the applied bias voltage, comprising in combination, input circuit means having elements comprising capacitance diodes, said input circuit means being tuned for reception of electrical signals at predetermined frequency by means of said capacitance diodes, said input circuit means comprising tuned resonant circuit means, a superheterodyne oscillator having elements comprising capacitance diodes and being connected to said input circuit means, said oscillator being also tuned by the capacitance diodes in said oscillator, a detector connected to the output of said input circuit means, capacitor means connected to said input circuit means and said oscillator for storing the tuning voltage applied to said elements in said input circuit means and said oscillator, a charging circuit connected to said capacitor means and controlled from the output of said detector means, at least one electrochemical integrator connected in series with said capacitor means, switching means connected between said integrator and said capacitor means for reversing interconnections between said integrator and said capacitor means, a voltage step detector connected in parallel with said integrator, said charging circuit being controllable from said voltage step detector or from the output of said detector means after actuating said switching means.
Claim 3
Dependent Claim
47 words
The arrangement as defined in claim 1 wherein said at least one electrochemical integrator comprises two electrochemical integrators connected in series in opposite polarity with respect to each other in said charging circuit, and auxiliary switching means bridging one of said two integrators in said charging circuit.
Claim 4
Dependent Claim
45 words
The arrangement as defined in claim 1 wherein said at least one electrochemical integrator comprises a set of electrochemical integrators in said charging circuit, and a set of switches between said set of electrochemical integrators and said stations, said receivers having automatic scanning and tuning.
Claim 5
Dependent Claim
49 words
The arrangement as defined in claim 1 wherein said at least one electrochemical integrator comprises a set of pairs of electrochemical integrators in said charging circuit, and a set of switches between said electrochemical integrators in said charging circuit and said stations, said receivers having automatic scanning and tuning.
Claim 6
Dependent Claim
68 words
The arrangement as defined in claim 1 wherein said capacitor means comprises a plurality of capacitors, said at least one electrochemical integrator comprising a plurality of electrochemical integrators, said switching means comprising a plurality of switches connected between said capacitors and electrochemical integrators for switching-on the tuning voltage and changing the bias voltage, each electrochemical integrator being connected to said voltage step detector for controlling said charging circuit.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |