US5083196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chrominance processing apparatus for a compatible widescreen television system
Assignee: General Electric Co
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Filing: 1990-05-09
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Granted: 1992-01-21
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Expires: 2010-05-09
Abstract
Abstract In a widescreen signal encoding system for a television-type signal, side panel chrominance information is not subjected to time compression in an overscan region such as a horizontal overscan region containing time compressed low frequency side panel luminance information. Both low and high frequency side panel chrominance information, and high frequency side panel luminance information, modulate an auxiliary subcarrier.
Inventors
- 👤 Michael A. Isnardi
- 👤 Terrence R. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:51
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/24; H04N11/30; H04N7/00; H04N7/01; H04N7/0117; H04N7/0122; H04N9/00; H04N9/44; H04N9/45; H04N9/77
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
In a system for processing a widescreen television-type signal containing a main panel image component having luminance and chrominance information, and a side panel image component having luminance and chrominance information, apparatus comprising: first means for processing said main panel image component; second means for processing said side panel component; and means included in said second means for selectively time compressing low frequency side panel luminance information other than said side panel chrominance information into an image overscan region normally not intended to be seen by a viewer so that said overscan region contains side panel luminance information exclusive of side panel chrominance information.
Claim 2
Dependent Claim
104 words
In a system for processing a widescreen television-type signal containing a main panel image component having luminance and chrominance information, and a side panel image component having luminance and chrominance information, apparatus comprising: first means for processing said main panel image component; second means for processing said side panel component; and means included in said second means for selectively time compressing low frequency side panel luminance information other than said side panel chrominance information into an image overscan region normally not intended to be seen by a viewer so that said overscan region contains side panel luminance information exclusive of side panel chrominance information.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1, wherein said second means includes means for modulating an auxiliary subcarrier with low and high frequency side panel chrominance information.
Claim 4
Dependent Claim
136 words
In a system for receiving a widescreen television-type signal comprising main panel and side panel image components each containing luminance and chrominance information, with low frequency side panel luminance information substantially exclusive of side panel chrominance information being time compressed into an image overscan region normally not intended to be seen by a viewer so that said overscan region contains side panel luminance information exclusive of side panel chrominance information, apparatus comprising means for time expanding said time compressed side panel information; first means for combining said time expanded side panel information from said time expanding means with side panel luminance information to produce a reconstructed side panel component; and second means for combining said main panel component and said reconstructed side panel component from said first combining means to produce a widescreen image representative signal.
Claim 5
Dependent Claim
136 words
In a system for receiving a widescreen television-type signal comprising main panel and side panel image components each containing luminance and chrominance information, with low frequency side panel luminance information substantially exclusive of side panel chrominance information being time compressed into an image overscan region normally not intended to be seen by a viewer so that said overscan region contains side panel luminance information exclusive of side panel chrominance information, apparatus comprising means for time expanding said time compressed side panel information; first means for combining said time expanded side panel information from said time expanding means with side panel luminance information to produce a reconstructed side panel component; and second means for combining said main panel component and said reconstructed side panel component from said first combining means to produce a widescreen image representative signal.
Claim 6
Dependent Claim
56 words
A system according to claim 3 wherein said side panel chrominance information modulates an auxiliary carrier other than a standard chrominance subcarrier, and further comprising means for providing a reference signal having a field inverting phase; and demodulator means responsive to said reference signal and to said auxiliary carrier for recovering said side panel chrominance information.
Claim 7
Dependent Claim
19 words
A system according to claim 4, wherein said reference signal is at the frequency of a standard chrominance subcarrier.
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) | 1995-01-20 | 1995-07-22 | 1996-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-20 | 1999-07-22 | 2000-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-20 | 2003-07-22 | 2004-01-21 | $7700.00 | Window Closed / Lapsed |