US3287575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level regenerating arrangement for the transmission of bipolar signals
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1964-06-18
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Granted: 1966-11-22
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Widl Walter Herbert Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/06; H04L25/061; H04L25/065; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30; H04L25/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
APPARATUS FOR REGENERATING A DIRECT VOLTAGE LEVEL IN RESPONSE TO RECEIVING ALTERNATING VOLTAGE SIGNALS, COMPRISING: A LIMITING AMPLIFIER INCLUDING AN INPUT AND AN OUTPUT FOR TRANSMITTING SIGNALS OF FIRST OR SECOND LEVELS; A VOLTAGESUMMING CIRCUIT INCLUDING A FIRST INPUT FOR RECEIVING THE ALTERNATING VOLTAGE SIGNALS, A SECOND INPUT AND AN OUTPUT FOR TRANSMITTING SIGNALS REPRESENTING THE SUM OF VOLTAGES RECEIVED AT THE INPUTS; A LOW-PASS FILTER MEANS INCLUDING AN INPUT CONNECTED TO THE OUTPUT OF SAID LIMITING AMPLIFIER AND AN OUTPUT CONNECTED TO THE SECOND INPUT OF SAID SUMMING CIRCUIT; A TRANSISTOR AMPLIFIER MEANS INCLUDING AN INPUT CONNECTED TO THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT AND AN OUTPUT; AND A TRANSFORMER INCLUDING PRIMARY WINDING MEANS CONNECTED TO THE OUTPUT OF SAID TRANSISTOR AMPLIFIER MEANS AND A SECONDARY WINDING SERIALLY CONNECTED BETWEEN THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT AND THE INPUT OF SAID LIMITING AMPLIFIER; SAID TRANSISTOR AMPLIFIER MEANS BEING CONDUCTIVE ONLY WHEN THE VOLTAGE OF THE SIGNAL TRANSMITTED FROM THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT EXCEEDS A GIVEN AMPLITUDE, WHEREBY SAID SECONDARY WINDING PRODUCES A PULSE VOLTAGE IN RESPONSE TO THE CONDUCTION OF SAID TRANSISTOR AMPLIFIER MEANS.
Claim 2
Dependent Claim
187 words
APPARATUS FOR REGENERATING A DIRECT VOLTAGE LEVEL IN RESPONSE TO RECEIVING ALTERNATING VOLTAGE SIGNALS, COMPRISING: A LIMITING AMPLIFIER INCLUDING AN INPUT AND AN OUTPUT FOR TRANSMITTING SIGNALS OF FIRST OR SECOND LEVELS; A VOLTAGESUMMING CIRCUIT INCLUDING A FIRST INPUT FOR RECEIVING THE ALTERNATING VOLTAGE SIGNALS, A SECOND INPUT AND AN OUTPUT FOR TRANSMITTING SIGNALS REPRESENTING THE SUM OF VOLTAGES RECEIVED AT THE INPUTS; A LOW-PASS FILTER MEANS INCLUDING AN INPUT CONNECTED TO THE OUTPUT OF SAID LIMITING AMPLIFIER AND AN OUTPUT CONNECTED TO THE SECOND INPUT OF SAID SUMMING CIRCUIT; A TRANSISTOR AMPLIFIER MEANS INCLUDING AN INPUT CONNECTED TO THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT AND AN OUTPUT; AND A TRANSFORMER INCLUDING PRIMARY WINDING MEANS CONNECTED TO THE OUTPUT OF SAID TRANSISTOR AMPLIFIER MEANS AND A SECONDARY WINDING SERIALLY CONNECTED BETWEEN THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT AND THE INPUT OF SAID LIMITING AMPLIFIER; SAID TRANSISTOR AMPLIFIER MEANS BEING CONDUCTIVE ONLY WHEN THE VOLTAGE OF THE SIGNAL TRANSMITTED FROM THE OUTPUT OF SAID VOLTAGE-SUMMING CIRCUIT EXCEEDS A GIVEN AMPLITUDE, WHEREBY SAID SECONDARY WINDING PRODUCES A PULSE VOLTAGE IN RESPONSE TO THE CONDUCTION OF SAID TRANSISTOR AMPLIFIER MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |