US3204241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio navigation apparatus
Assignee: US Philips Corp
•
Filing: 1963-02-25
•
Granted: 1965-08-31
•
Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Bjorkman Bengt Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:45
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/10; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/30; G01S5/00; G01S5/02; G01S5/0205; G01S5/0244; G01S5/0246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF NAVIGATING A VEHICLE COMPRISING THE STEPS OF, COMPUTING BY DEAD RECKONING TECHNIQUES THE RELATIVE VELOCITY BETWEEN THE VEHICLE AND A POSITIONALLY FIXED RADIO TRANSMITTER, GENERATING A LOCAL SIGNAL ON THE VEHICLE WHICH IS FREQUENCY COHERENT WITH THE TRANSMITTED SIGNAL FROM THE POSITIONALLY FIXED RADIO TRANSMITTER, RECEIVING THE TRANSMITTED SIGNAL, SHIFTING THE RELATIVE PHASE OF THE TRANSMITTED SIGNAL AS RECEIVED ON THE VEHICLE AND THE LOCALLY GENERATED SIGNAL AS A FUNCTION OF THE COMPUTED RELATIVE VELOCITY BETWEEN THE VEHICLE AND THE TRANSMITTER, AND COMPARING THE PHASE DIFFERENCE BETWEEN THE RELATIVELY SHIFTED TRANSMITTER SIGNAL AND THE LOCALLY GENERATED COHERENT SIGNAL TO DETERMINE THE PHASE SHIFT THEREBETWEEN WHICH SHIFT CORRESPONDS TO THE ERROR IN THE COMPUTATION.
Claim 2
Independent Claim
116 words
A METHOD OF NAVIGATING A VEHICLE COMPRISING THE STEPS OF, COMPUTING BY DEAD RECKONING TECHNIQUES THE RELATIVE VELOCITY BETWEEN THE VEHICLE AND A POSITIONALLY FIXED RADIO TRANSMITTER, GENERATING A LOCAL SIGNAL ON THE VEHICLE WHICH IS FREQUENCY COHERENT WITH THE TRANSMITTED SIGNAL FROM THE POSITIONALLY FIXED RADIO TRANSMITTER, RECEIVING THE TRANSMITTED SIGNAL, SHIFTING THE RELATIVE PHASE OF THE TRANSMITTED SIGNAL AS RECEIVED ON THE VEHICLE AND THE LOCALLY GENERATED SIGNAL AS A FUNCTION OF THE COMPUTED RELATIVE VELOCITY BETWEEN THE VEHICLE AND THE TRANSMITTER, AND COMPARING THE PHASE DIFFERENCE BETWEEN THE RELATIVELY SHIFTED TRANSMITTER SIGNAL AND THE LOCALLY GENERATED COHERENT SIGNAL TO DETERMINE THE PHASE SHIFT THEREBETWEEN WHICH SHIFT CORRESPONDS TO THE ERROR IN THE COMPUTATION.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |