US3116374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voice bandwidth reduction transmission system
Assignee: General Dynamics Corp
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Filing: 1960-08-09
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Granted: 1963-12-31
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Expires: 1980-08-09
Abstract
No abstract record available.
Inventors
- 👤 George A Franco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:22
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; H04B1/667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SYSTEM FOR REDUCING THE BANDWIDTH NEEDED TO TRANSMIT AN INFORMATION SIGNAL HAVING A FREQUENCY SPECTRUM RANGING FROM A GIVEN LOW FREQUENCY TO A GIVEN HIGH FREQUENCY AND HAVING A GIVEN MINIMUM SYLLABIC PERIOD, SAID SYSTEM COMPRISING A TRANSMITTER INCLUDING FILTER MEANS HAVING SAID INFORMATION SIGNAL APPLIED AS AN INPUT THERETO FOR DIVIDING THE FREQUENCY SPECTRUM THEREOF INTO A GIVEN NUMBER OF SEPARATE CONTIGUOUS FREQUENCY BANDWIDTH CHANNELS, THE LOWEST OF SAID CHANNELS PASSING ALL FREQUENCIES UP TO A GIVEN INTERMEDIATE FREQUENCY WHICH IS BETWEEN SAID GIVEN LOW AND HIGH FREQUENCIES AND EACH OF SAID OTHER CHANNELS HAVING A RESPECTIVE FREQUENCY BANDWIDTH NO GREATER THAN SAID GIVEN INTERMEDIATE FREQUENCY, HETERODYNE MEANS COUPLED TO SAID FILTER MEANS AND ASSOCIATED WITH EACH OF SAID OTHER CHANNELS FOR REDUCING THE FREQUENCY OF THE COMPONENTS OF EACH RESPECTIVE OTHER
Claim 2
Independent Claim
134 words
A SYSTEM FOR REDUCING THE BANDWIDTH NEEDED TO TRANSMIT AN INFORMATION SIGNAL HAVING A FREQUENCY SPECTRUM RANGING FROM A GIVEN LOW FREQUENCY TO A GIVEN HIGH FREQUENCY AND HAVING A GIVEN MINIMUM SYLLABIC PERIOD, SAID SYSTEM COMPRISING A TRANSMITTER INCLUDING FILTER MEANS HAVING SAID INFORMATION SIGNAL APPLIED AS AN INPUT THERETO FOR DIVIDING THE FREQUENCY SPECTRUM THEREOF INTO A GIVEN NUMBER OF SEPARATE CONTIGUOUS FREQUENCY BANDWIDTH CHANNELS, THE LOWEST OF SAID CHANNELS PASSING ALL FREQUENCIES UP TO A GIVEN INTERMEDIATE FREQUENCY WHICH IS BETWEEN SAID GIVEN LOW AND HIGH FREQUENCIES AND EACH OF SAID OTHER CHANNELS HAVING A RESPECTIVE FREQUENCY BANDWIDTH NO GREATER THAN SAID GIVEN INTERMEDIATE FREQUENCY, HETERODYNE MEANS COUPLED TO SAID FILTER MEANS AND ASSOCIATED WITH EACH OF SAID OTHER CHANNELS FOR REDUCING THE FREQUENCY OF THE COMPONENTS OF EACH RESPECTIVE OTHER
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |