US3334178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line blanking apparatus for color bar generating equipment
Assignee: RCA Corp
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Filing: 1965-06-29
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Granted: 1967-08-01
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert R Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:08
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
LINE BLANKING APPARATUS FOR COLOR BAR GENERATING EQUIPMENT OF THE TYPE THAT IS TRIGGERED BY COMPOSITE BLANKING SIGNALS, COMPRISING: MEANS FOR SUPPLYING SAID COMPOSITE BLANKING SIGNALS INCLUDING THE HORIZONTAL AND VERTICAL BLANKING SIGNAL COMPONENTS THEREOF; A FIRST CIRCUIT FOR DIFFERENTIATING SAID COMPOSITE BLANKING SIGNALS; A SECOND CIRCUIT FOR DIFFERENTIATING SAID COMPOSITE BLANKING SIGNALS; A BISTABLE MULTIVIBRATOR HAVING FIRST AND SECOND STABLE STATES; MEANS FOR COUPLING OUTPUT SIGNALS DEVELOPED BY SAID FIRST DIFFERENTIATING CIRCUIT TO SAID MULTIVIBRATOR FOR SWITCHING SAID MULTIVIBRATOR FROM ITS FIRST STABLE STATE TO ITS SECOND STABLE STATE IN RESPONSE TO THE TRAILING EDGE EXCURSION OF SAID VERTICAL BLANKING SIGNAL SIGNAL COMPONENT; MEANS FOR COUPLING OUTPUT SIGNALS DEVELOPED BY SAID SECOND DIFFERENTIATING CIRCUIT TO SAID MULTIVIBRATOR FOR SWITCHING SAID MULTIVIBRATOR FROM ITS SECOND STABLE STATE TO ITS FIRST STABLE STATE IN RESPONSE TO THE TRAILING EDGE EXCURSION OF A HORIZONTAL BLANKING SIGNAL COMPONENT FOLLOWING SAID VERTICAL BLANKING SIGNAL COMPONENT; AND MEANS CONTROLLED BY PULSE SIGNALS DEVELOPED BY SAID MULTIVIBRATOR FOR BLOCKING AND THEREBY DELETING FROM THE COLOR BAR PATTERN GENERATED BY SAID EQUIPMENT, AT LEAST THE FIRST LINE OF EACH FIELD OF COLOR BAR INFORMATION GENERATED AND FOR PASSING, AND THEREBY INCLUDING IN THE COLOR BAR PATTERN GENERATED, THE REMAINING LINES OF SAID FIELD OF COLOR BAR INFORMATION.
Claim 2
Dependent Claim
210 words
LINE BLANKING APPARATUS FOR COLOR BAR GENERATING EQUIPMENT OF THE TYPE THAT IS TRIGGERED BY COMPOSITE BLANKING SIGNALS, COMPRISING: MEANS FOR SUPPLYING SAID COMPOSITE BLANKING SIGNALS INCLUDING THE HORIZONTAL AND VERTICAL BLANKING SIGNAL COMPONENTS THEREOF; A FIRST CIRCUIT FOR DIFFERENTIATING SAID COMPOSITE BLANKING SIGNALS; A SECOND CIRCUIT FOR DIFFERENTIATING SAID COMPOSITE BLANKING SIGNALS; A BISTABLE MULTIVIBRATOR HAVING FIRST AND SECOND STABLE STATES; MEANS FOR COUPLING OUTPUT SIGNALS DEVELOPED BY SAID FIRST DIFFERENTIATING CIRCUIT TO SAID MULTIVIBRATOR FOR SWITCHING SAID MULTIVIBRATOR FROM ITS FIRST STABLE STATE TO ITS SECOND STABLE STATE IN RESPONSE TO THE TRAILING EDGE EXCURSION OF SAID VERTICAL BLANKING SIGNAL SIGNAL COMPONENT; MEANS FOR COUPLING OUTPUT SIGNALS DEVELOPED BY SAID SECOND DIFFERENTIATING CIRCUIT TO SAID MULTIVIBRATOR FOR SWITCHING SAID MULTIVIBRATOR FROM ITS SECOND STABLE STATE TO ITS FIRST STABLE STATE IN RESPONSE TO THE TRAILING EDGE EXCURSION OF A HORIZONTAL BLANKING SIGNAL COMPONENT FOLLOWING SAID VERTICAL BLANKING SIGNAL COMPONENT; AND MEANS CONTROLLED BY PULSE SIGNALS DEVELOPED BY SAID MULTIVIBRATOR FOR BLOCKING AND THEREBY DELETING FROM THE COLOR BAR PATTERN GENERATED BY SAID EQUIPMENT, AT LEAST THE FIRST LINE OF EACH FIELD OF COLOR BAR INFORMATION GENERATED AND FOR PASSING, AND THEREBY INCLUDING IN THE COLOR BAR PATTERN GENERATED, THE REMAINING LINES OF SAID FIELD OF COLOR BAR INFORMATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |