Patent US3114797A successfully refreshed from Google Patents.
US3114797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television system for detection of differences
Assignee: HARVEY WELLS CORP
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Filing: 1961-12-04
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Granted: 1963-12-17
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 David A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:02
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; H04N7/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A SYSTEM FOR DETECTING DIFFERENCES BETWEEN TWO SCENES, MEANS FOR DEVELOPING A FIRST IMAGE INCLUDING A FIRST SERIES OF SPACED PARALLEL DARK LINES AND LINES THEREBETWEEN CORRESPONDING TO ONE OF SAID SCENES, MEANS FOR SUPERIMPOSING ON SAID FIRST IMAGE A SECOND IMAGE INCLUDING A SECOND SERIES OF SPACED PARALLEL DARK LINES AND LINES THEREBETWEEN CORRESPONDING TO THE OTHER OF SAID SCENES, SAID SECOND SERIES OF DARK LINES BEING DISPOSED BETWEEN SAID FIRST SERIES OF DARK LINES, WHEREBY A BAR PATTERN IS PRODUCED IN THE COMPOSITE OF SAID IMAGES AT AREAS OF DIFFERENCE BETWEEN SAID TWO SCENES.
Claim 2
Dependent Claim
97 words
IN A SYSTEM FOR DETECTING DIFFERENCES BETWEEN TWO SCENES, MEANS FOR DEVELOPING A FIRST IMAGE INCLUDING A FIRST SERIES OF SPACED PARALLEL DARK LINES AND LINES THEREBETWEEN CORRESPONDING TO ONE OF SAID SCENES, MEANS FOR SUPERIMPOSING ON SAID FIRST IMAGE A SECOND IMAGE INCLUDING A SECOND SERIES OF SPACED PARALLEL DARK LINES AND LINES THEREBETWEEN CORRESPONDING TO THE OTHER OF SAID SCENES, SAID SECOND SERIES OF DARK LINES BEING DISPOSED BETWEEN SAID FIRST SERIES OF DARK LINES, WHEREBY A BAR PATTERN IS PRODUCED IN THE COMPOSITE OF SAID IMAGES AT AREAS OF DIFFERENCE BETWEEN SAID TWO SCENES.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |