US3136953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discriminator system and circuits
Assignee: Air Logistics Corp
•
Filing: 1961-02-14
•
Granted: 1964-06-09
•
Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Eaton
- 👤 Thaddeus F Boblak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A SYSTEM FOR DERIVING INFORMATION FROM SIGNALS REPRODUCED FROM A COMPOSITE SIGNAL MADE UP OF ONE SIGNAL OF FIXED FREQUENCY AND AT LEAST ONE OTHER SIGNAL OF A CARRIER FREQUENCY THAT IS FREQUENCY MODULATED BY AN INFORMATION SOURCE, AND WHEREIN THE COMPONENTS OF THE COMPOSITE SIGNAL ARE VARIABLE IN FREQUENCY FROM THE FIXED FREQUENCY SIGNAL AND THE MODULATED SIGNAL, MEANS TO PROCESS SUCH COMPONENTS AND OBTAIN THE INFORMATION REFLECTED IN THE FREQUENCY MODULATION, COMPRISING: MEANS TO DEVELOP A VARYING D.-C. VOLTAGE THAT VARIES INVERSELY AS THE FREQUENCY VARIATIONS OF THE ONE SIGNAL RELATIVE TO THE FIXED FREQUENCY; MEANS TO DEVELOP A PULSE DURING EACH CYCLE OF THE OTHER SIGNAL, EACH PULSE BEING OF THE SAME DURATION AND AMPLITUDE; AND MEANS TO VARY THE AMPLITUDE OF EACH PULSE RELATIVE TO A PREDETERMINED REFERENCE LEVEL BY AN AMOUNT CORRESPONDING TO THE MAGNITUDE OF THE COINCIDENT PORTION OF SAID D.-C. VOLTAGE.
Claim 2
Dependent Claim
149 words
IN A SYSTEM FOR DERIVING INFORMATION FROM SIGNALS REPRODUCED FROM A COMPOSITE SIGNAL MADE UP OF ONE SIGNAL OF FIXED FREQUENCY AND AT LEAST ONE OTHER SIGNAL OF A CARRIER FREQUENCY THAT IS FREQUENCY MODULATED BY AN INFORMATION SOURCE, AND WHEREIN THE COMPONENTS OF THE COMPOSITE SIGNAL ARE VARIABLE IN FREQUENCY FROM THE FIXED FREQUENCY SIGNAL AND THE MODULATED SIGNAL, MEANS TO PROCESS SUCH COMPONENTS AND OBTAIN THE INFORMATION REFLECTED IN THE FREQUENCY MODULATION, COMPRISING: MEANS TO DEVELOP A VARYING D.-C. VOLTAGE THAT VARIES INVERSELY AS THE FREQUENCY VARIATIONS OF THE ONE SIGNAL RELATIVE TO THE FIXED FREQUENCY; MEANS TO DEVELOP A PULSE DURING EACH CYCLE OF THE OTHER SIGNAL, EACH PULSE BEING OF THE SAME DURATION AND AMPLITUDE; AND MEANS TO VARY THE AMPLITUDE OF EACH PULSE RELATIVE TO A PREDETERMINED REFERENCE LEVEL BY AN AMOUNT CORRESPONDING TO THE MAGNITUDE OF THE COINCIDENT PORTION OF SAID D.-C. VOLTAGE.
References Cited (Backward Citations)
US2892103A
Cited
US2900532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |