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Patent US5081522A successfully refreshed from Google Patents.
US5081522A
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Dual picture video signal processsing circuit
Assignee: Pioneer Corp
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Filing: 1990-05-16
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Granted: 1992-01-14
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Expires: 2010-05-16
Abstract
Abstract A dual picture video signal processisng circuit performs a subpicture processisng after the Y/C separation when a composite video signal is supplied. When separate Y and C signals are supplied, the circuit performs the subpicture processing directly to the Y and C signals. By this feature the circuit automatically performs the subpicture processing both for the composite video signal and the separate Y and C signals for the subpicture, and deterioration of the picture quality of the subpicture is prevented.
Inventors
- 👤 Takahori Hiroyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:46
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N9/00; H04N9/64; H04N9/641
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A dual picture video signal processing circuit comprising: first input means for receiving a composite video signal or separate Y and C signals as signal(s) for a main picture; second input means for receiving a composite video signal or separate Y and C signals as signal(s) for a subpicture; first separating means for separating said composite video signal supplied from said first input means into Y and C signals; second separating means for separating said composite video signal supplied from said second input means into Y and C signals; selecting means for selecting either of said Y and C signals supplied from said first input means and said Y and C signals supplied from said second input means; subpicture signal processing means for performing a subpicture signal processing to either of said Y and C signals supplied from said second input means and said Y and C signals supplied from said second separating means; and superimposing means for superimposing said Y and C signals processed by said subpicture signal processing means on said Y and C signals passed through said selecting means.
Claim 2
Dependent Claim
182 words
A dual picture video signal processing circuit comprising: first input means for receiving a composite video signal or separate Y and C signals as signal(s) for a main picture; second input means for receiving a composite video signal or separate Y and C signals as signal(s) for a subpicture; first separating means for separating said composite video signal supplied from said first input means into Y and C signals; second separating means for separating said composite video signal supplied from said second input means into Y and C signals; selecting means for selecting either of said Y and C signals supplied from said first input means and said Y and C signals supplied from said second input means; subpicture signal processing means for performing a subpicture signal processing to either of said Y and C signals supplied from said second input means and said Y and C signals supplied from said second separating means; and superimposing means for superimposing said Y and C signals processed by said subpicture signal processing means on said Y and C signals passed through said selecting means.
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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |