Patent US3196208A successfully refreshed from Google Patents.
US3196208A
Expired / Lapsed
US
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Two-level quantization system
Assignee: Lanteris Space LLC
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Filing: 1962-01-24
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Granted: 1965-07-20
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis P Keiper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:01
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/32; G; G06; G06V; G06V10/00; G06V10/20; G06V10/28; H04N1/00; H04N1/40; H04N1/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A SYSTEM FOR PRODUCING A PICTURE OR IMAGE REPRESENTATIVE SIGNAL QUANTIZED TO TWO LEVELS REPRESENTING BLACK AND WHITE, MEANS FOR CAUSING AN ELECTRON BEAM TO SCAN THE PICTURE OR IMAGE IN SUCCESSIVE LINES, MEANS FOR PRODUCING A WAVE HAVING A FREQUENCY SUBSTANTIALLY HIGHER THAN THE LINE-SCANNING FREQUENCY AND HAVING AXIAL PORTIONS AND INTERMITTENTLY-OCCURING EXCURSIONS FROM THE WAVE AXIS, SAID EXCURSIONS OCCURING DURING A PREDETERMINED FRACTION OF THE TIME OF EACH CYCLE OF SAID WAVE, MEANS FOR UTILIZING SAID WAVE TO EFFECT FOCUS MODULATION OF SAID BEAM, MEANS FOR PRODUCING FROM THE BEAM SCANNING AND FOCUS MODULATION A SIGNAL REPRESENTED SUBSTANTIALLY BY THE SUM OF THE SECOND SPATIAL DERIVATIVES OF BRIGHTNESS OF THE PICTURE OR IMAGE IN TWO DIRECTIONS, AND MEANS RESPONSIVE TO SAID LAST-NAMED SIGNAL TO PROVIDE A TWO-LEVEL SIGNAL WHOSE LEVELS RESPECTIVELY REPRESENT BLACK AND WHITE AREAS OF THE PICTURE OR IMAGE.
Claim 2
Dependent Claim
144 words
IN A SYSTEM FOR PRODUCING A PICTURE OR IMAGE REPRESENTATIVE SIGNAL QUANTIZED TO TWO LEVELS REPRESENTING BLACK AND WHITE, MEANS FOR CAUSING AN ELECTRON BEAM TO SCAN THE PICTURE OR IMAGE IN SUCCESSIVE LINES, MEANS FOR PRODUCING A WAVE HAVING A FREQUENCY SUBSTANTIALLY HIGHER THAN THE LINE-SCANNING FREQUENCY AND HAVING AXIAL PORTIONS AND INTERMITTENTLY-OCCURING EXCURSIONS FROM THE WAVE AXIS, SAID EXCURSIONS OCCURING DURING A PREDETERMINED FRACTION OF THE TIME OF EACH CYCLE OF SAID WAVE, MEANS FOR UTILIZING SAID WAVE TO EFFECT FOCUS MODULATION OF SAID BEAM, MEANS FOR PRODUCING FROM THE BEAM SCANNING AND FOCUS MODULATION A SIGNAL REPRESENTED SUBSTANTIALLY BY THE SUM OF THE SECOND SPATIAL DERIVATIVES OF BRIGHTNESS OF THE PICTURE OR IMAGE IN TWO DIRECTIONS, AND MEANS RESPONSIVE TO SAID LAST-NAMED SIGNAL TO PROVIDE A TWO-LEVEL SIGNAL WHOSE LEVELS RESPECTIVELY REPRESENT BLACK AND WHITE AREAS OF THE PICTURE OR IMAGE.
References Cited (Backward Citations)
US2902540A
Cited
US2916549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |