US3309459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television servicing instrument
Assignee: Individual
•
Filing: 1965-05-20
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Granted: 1967-03-14
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Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Donald S Donigian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:15
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN INSTRUMENT FOR SERVICING A COLOR TELEVISION RECEIVER WHICH INCLUDES A KINESCOPE OF THE TYPE HAVING THREE ELECTRON GUNS AND A MASKED TRI-COLORED-PHOSPHOR SCREEN, MEANS FOR SUPPLYING OPERATING VOLTAGES TO SAID GUNS, MEANS FOR APPLYING A LUMINANCE SIGNAL TO ALL OF SAID GUNS, AND MEANS FOR APPLYING INDIVIDUAL CHROMINANCE SIGNALS TO SAID GUNS, PHOTOCELL MEANS ARRANGED FOR DISPOSITION ADJACENT A PORTION OF SAID SCREEN, MEASURING MEANS RESPONSIVE TO THE OUTPUT OF SAID PHOTOCELL MEANS AND ARRANGED FOR INDICATING THE RESPECTIVE LIGHT OUTPUTS FROM SAID PHOSPHORS, AND CALIBRATION MEANS ASSOCIATED WITH SAID MEASURING MEANS FOR PERMITTING ADJUSTMENT OF SAID OPERATING VOLTAGES OF SAID GUNS TO OBTAIN PREDETERMINED LIGHT OUTPUTS FROM THE RESPECTIVE PHOSPHORS WHILE NO CHROMINANCE SIGNALS ARE APPLIED TO SAID GUNS, SAID PREDETERMINED LIGHT OUTPUTS BEING SUCH THAT A BLACKAND-WHITE REPRODUCTION IS OBTAINED IN RESPONSE TO APPLICATION OF A LUMINANCE SIGNAL ALONE TO SAID GUNS.
Claim 2
Dependent Claim
146 words
IN AN INSTRUMENT FOR SERVICING A COLOR TELEVISION RECEIVER WHICH INCLUDES A KINESCOPE OF THE TYPE HAVING THREE ELECTRON GUNS AND A MASKED TRI-COLORED-PHOSPHOR SCREEN, MEANS FOR SUPPLYING OPERATING VOLTAGES TO SAID GUNS, MEANS FOR APPLYING A LUMINANCE SIGNAL TO ALL OF SAID GUNS, AND MEANS FOR APPLYING INDIVIDUAL CHROMINANCE SIGNALS TO SAID GUNS, PHOTOCELL MEANS ARRANGED FOR DISPOSITION ADJACENT A PORTION OF SAID SCREEN, MEASURING MEANS RESPONSIVE TO THE OUTPUT OF SAID PHOTOCELL MEANS AND ARRANGED FOR INDICATING THE RESPECTIVE LIGHT OUTPUTS FROM SAID PHOSPHORS, AND CALIBRATION MEANS ASSOCIATED WITH SAID MEASURING MEANS FOR PERMITTING ADJUSTMENT OF SAID OPERATING VOLTAGES OF SAID GUNS TO OBTAIN PREDETERMINED LIGHT OUTPUTS FROM THE RESPECTIVE PHOSPHORS WHILE NO CHROMINANCE SIGNALS ARE APPLIED TO SAID GUNS, SAID PREDETERMINED LIGHT OUTPUTS BEING SUCH THAT A BLACKAND-WHITE REPRODUCTION IS OBTAINED IN RESPONSE TO APPLICATION OF A LUMINANCE SIGNAL ALONE TO SAID GUNS.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |