US3299362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of nonlinearly distorted signals
Assignee: AT&T Inc
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Filing: 1963-09-13
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Granted: 1967-01-17
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Expires: 1983-09-13
Abstract
No abstract record available.
Inventors
- 👤 Irwin W Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:38
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A NONLINEAR DISTORTION PRODUCING SIGNAL TRANSMISSION SYSTEM HAVING AN INPUT SIGNAL APPLIED THERETO AND FROM WHICH THERE IS DERIVED A CORRESPONDING DISTORTED AND SUBSEQUENTLY BANDLIMITED OUTPUT SIGNAL, MEANS FOR RECOVERING SAID INPUT SIGNAL FROM SAID DISTORTED AND BANDLIMITED OUTPUT SIGNAL WHICH COMPRISES, AN INPUT FREQUENCY SEPARATING NETWORK FOR SEPARATING FREQUENCY BANDS WITHIN SAID BAND LIMITATION, A PLURALITY OF ITERATIVE STAGES, EACH STAGE COMPRISING AN INVERSE NONLINEAR NETWORK, MEANS FOR ELIMINATING SIGNALS FROM SAID INVERSE NONLINEAR NETWORK WHICH FALL WITHIN ONE OF SAID SEPARATED FREQUENCY BANDS, AND MEANS FOR COMBINING THE OUTPUT OF SAID ELIMINATING MEANS WITH THE OUTPUT OF THE PREVIOUS STAGE, AND AN OUTPUT FREQUENCY COMBINING NETWORK FOR COMBINING THE OUTPUT OF THE LAST ONE OF SAID STAGES AND OUTPUTS FROM SAID INPUT SEPARATING NETWORK.
Claim 2
Dependent Claim
127 words
IN A NONLINEAR DISTORTION PRODUCING SIGNAL TRANSMISSION SYSTEM HAVING AN INPUT SIGNAL APPLIED THERETO AND FROM WHICH THERE IS DERIVED A CORRESPONDING DISTORTED AND SUBSEQUENTLY BANDLIMITED OUTPUT SIGNAL, MEANS FOR RECOVERING SAID INPUT SIGNAL FROM SAID DISTORTED AND BANDLIMITED OUTPUT SIGNAL WHICH COMPRISES, AN INPUT FREQUENCY SEPARATING NETWORK FOR SEPARATING FREQUENCY BANDS WITHIN SAID BAND LIMITATION, A PLURALITY OF ITERATIVE STAGES, EACH STAGE COMPRISING AN INVERSE NONLINEAR NETWORK, MEANS FOR ELIMINATING SIGNALS FROM SAID INVERSE NONLINEAR NETWORK WHICH FALL WITHIN ONE OF SAID SEPARATED FREQUENCY BANDS, AND MEANS FOR COMBINING THE OUTPUT OF SAID ELIMINATING MEANS WITH THE OUTPUT OF THE PREVIOUS STAGE, AND AN OUTPUT FREQUENCY COMBINING NETWORK FOR COMBINING THE OUTPUT OF THE LAST ONE OF SAID STAGES AND OUTPUTS FROM SAID INPUT SEPARATING NETWORK.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |