US3308334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trace distortion correction
Assignee: International Business Machines Corp
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Filing: 1963-06-28
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Granted: 1967-03-07
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Bobby L Bryson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:17
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/23; H04N3/233; H04N3/2335; G; G06; G06G; G06G7/00; G06G7/12; G06G7/14; G06G7/26; G06G7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A SYSTEM TO CORRECT TRACE DISTORTION OF A CATHODE RAY TUBE COMPRISING PLURAL MEANS TO GENERATE AN INTERMEDIATE LOGARITHMIC FUNCTION IN A FINAL CORRECTION FORMULA, INCLUDING MEANS TO REDUCE SAID INTERMEDIATE FUNCTION BY A CONSTANT AMOUNT, PLURAL ANTILOGARITHMIC FUNCTION GENERATING MEANS RESPONSIVE TO RELATIVELY LARGE VALUES OF SAID REDUCED INTERMEDIATE LOGARITHMIC FUNCTION TO GENERATE A FINAL CORRECTION FUNCTION, AND PLURAL MEANS TO MODIFY DEFLECTION IN SAID CATHODE RAY TUBE IN ACCORDANCE WITH SAID FINAL CORRECTION FUNCTION.
Claim 2
Dependent Claim
77 words
IN A SYSTEM TO CORRECT TRACE DISTORTION OF A CATHODE RAY TUBE COMPRISING PLURAL MEANS TO GENERATE AN INTERMEDIATE LOGARITHMIC FUNCTION IN A FINAL CORRECTION FORMULA, INCLUDING MEANS TO REDUCE SAID INTERMEDIATE FUNCTION BY A CONSTANT AMOUNT, PLURAL ANTILOGARITHMIC FUNCTION GENERATING MEANS RESPONSIVE TO RELATIVELY LARGE VALUES OF SAID REDUCED INTERMEDIATE LOGARITHMIC FUNCTION TO GENERATE A FINAL CORRECTION FUNCTION, AND PLURAL MEANS TO MODIFY DEFLECTION IN SAID CATHODE RAY TUBE IN ACCORDANCE WITH SAID FINAL CORRECTION FUNCTION.
References Cited (Backward Citations)
US2620456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |