US3194882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile system with resolved local area contrast control
Assignee: TI Gotham Inc
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Filing: 1961-05-16
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Granted: 1965-07-13
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:15
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/58; H04N1/40; H04N1/409; H04N1/4092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
FACSIMILE APPARATUS FOR PRODUCING A REPLICA OF AN ORIGINAL TONAL SUBJECT COMPRISING, MEANS TO DERIVE FROM A SMALL SPOT ON SAID SUBJECT A FIRST ELECTRIC SIGNAL REPRESENTATIVE OF TONAL INFORMATION CONTAINED WITHIN SAID SPOT, A PLURALITY OF PHOTOELECTRIC MEANS RESPONSIVE TO LIGHT EMANATING FROM TONAL PORTIONS OF SAID SUBJECT IN AN AREA SURROUNDING SAID SPOT TO PRODUCE RESPECTIVE SECOND ELECTRIC SIGNALS EACH REPRESENTATIVE OF TONAL INFORMATION IN A CORRESPONDING ONE OF SAID PORTIONS, MEANS TO DERIVE FROM SAID SECOND SIGNALS A THIRD SIGNAL REPRESENTATIVE OF A DENSITY CONDITION CHARACTERIZING SUCH AREA, MEANS TO DERIVE FROM SAID SECOND SIGNALS A FOURTH SIGNAL REPRESENTATIVE OF A CONTRAST CONDITION CHARACTERIZING SAID AREA, AND MEANS TO MODIFY SAID FIRST SIGNAL AS A FUNCTION BOTH OF SAID THIRD AND FOURTH SIGNALS.
Claim 2
Dependent Claim
126 words
FACSIMILE APPARATUS FOR PRODUCING A REPLICA OF AN ORIGINAL TONAL SUBJECT COMPRISING, MEANS TO DERIVE FROM A SMALL SPOT ON SAID SUBJECT A FIRST ELECTRIC SIGNAL REPRESENTATIVE OF TONAL INFORMATION CONTAINED WITHIN SAID SPOT, A PLURALITY OF PHOTOELECTRIC MEANS RESPONSIVE TO LIGHT EMANATING FROM TONAL PORTIONS OF SAID SUBJECT IN AN AREA SURROUNDING SAID SPOT TO PRODUCE RESPECTIVE SECOND ELECTRIC SIGNALS EACH REPRESENTATIVE OF TONAL INFORMATION IN A CORRESPONDING ONE OF SAID PORTIONS, MEANS TO DERIVE FROM SAID SECOND SIGNALS A THIRD SIGNAL REPRESENTATIVE OF A DENSITY CONDITION CHARACTERIZING SUCH AREA, MEANS TO DERIVE FROM SAID SECOND SIGNALS A FOURTH SIGNAL REPRESENTATIVE OF A CONTRAST CONDITION CHARACTERIZING SAID AREA, AND MEANS TO MODIFY SAID FIRST SIGNAL AS A FUNCTION BOTH OF SAID THIRD AND FOURTH SIGNALS.
References Cited (Backward Citations)
US2918523A
Cited
US3019703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |