US3465156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser communications system employing narrow band noise cancellation
Assignee: GTE Sylvania Inc
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Filing: 1965-06-04
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Granted: 1969-09-02
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Charles J Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:08
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/11; H04B10/112; H04B10/1121; G; G02; G02F; G02F2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A LASER COMMUNICATIONS SYSTEM OPERATIVE TO CANCEL ATMOSPHERIC AND LASER NOISE WHICH AMPLITUDE MODULATES THE LIGHT BEAM, SAID SYSTEM COMPRISING, A LASER, A POLARIZATION LIGHT MODULATOR OPERATIVE TO IMPRESS VIDEO SIGNALS ONTO THE LASER BEAM, MEANS FOR SPLITING THE MODULATED BEAM INTO TWO CONVERGING PATHS, MEANS FOR RECEIVING SAID MODULATED LIGHT, MEANS FOR SPLITTING SAID RECEIVED LIGHT INTO FIRST AND SECOND PORTIONS, FIRST DETECTOR MEANS OPERATIVE IN RESPONSE TO SAID FIRST PORTION TO PRODUCE A FIRST SIGNAL CONTAINING SAID VIDEO SIGNALS AMPLITUDE MODULATED BY NOISE, SECOND DETECTOR MEANS OPERATIVE IN RESPONSE TO SAID SECOND PORTION TO PRODUCE A SECOND SIGNAL CONTAINING ONLY NOISE, AND A DIVIDER FOR DIVIDING SAID FIRST AND SECOND SIGNALS TO PRODUCE AN OUTPUT SIGNAL CONTAINING ONLY SAID VIDEO SIGNALS.
Claim 2
Dependent Claim
123 words
A LASER COMMUNICATIONS SYSTEM OPERATIVE TO CANCEL ATMOSPHERIC AND LASER NOISE WHICH AMPLITUDE MODULATES THE LIGHT BEAM, SAID SYSTEM COMPRISING, A LASER, A POLARIZATION LIGHT MODULATOR OPERATIVE TO IMPRESS VIDEO SIGNALS ONTO THE LASER BEAM, MEANS FOR SPLITING THE MODULATED BEAM INTO TWO CONVERGING PATHS, MEANS FOR RECEIVING SAID MODULATED LIGHT, MEANS FOR SPLITTING SAID RECEIVED LIGHT INTO FIRST AND SECOND PORTIONS, FIRST DETECTOR MEANS OPERATIVE IN RESPONSE TO SAID FIRST PORTION TO PRODUCE A FIRST SIGNAL CONTAINING SAID VIDEO SIGNALS AMPLITUDE MODULATED BY NOISE, SECOND DETECTOR MEANS OPERATIVE IN RESPONSE TO SAID SECOND PORTION TO PRODUCE A SECOND SIGNAL CONTAINING ONLY NOISE, AND A DIVIDER FOR DIVIDING SAID FIRST AND SECOND SIGNALS TO PRODUCE AN OUTPUT SIGNAL CONTAINING ONLY SAID VIDEO SIGNALS.
References Cited (Backward Citations)
US3351761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |