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Patent US4855811A successfully refreshed from Google Patents.
US4855811A
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Apparatus for processing auxiliary information in an extended definition widescreen television system
Assignee: General Electric Co
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Filing: 1988-02-10
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Granted: 1989-08-08
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Expires: 2008-02-10
Abstract
Abstract An NTSC compatible, single broadcast channel, widescreen EDTV system encodes and decodes a television signal comprising: (1) a main, standard formal NTSC signal component with low frequency side panel image information compressed into the overscan regions thereof; (2) a time expanded high frequency side panel image information component; and (3) an extended high frequency horizontal luminance image information component. Components (2) and (3) quadrature modulate an alternate subcarrier, other than a chrominance subcarrier, having an alternating phase unlike that of the chrominance subcarrier.
Inventors
- 👤 Michael A. Isnardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:16
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/012; G; G06; G06T; G06T9/00; G06T9/004; H04N11/00; H04N11/24; H04N11/30; H04N7/0122; H04N9/00; H04N9/77; H04N9/78
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A system for processing a television-type signal, comprising: means for providing a television-type signal representative of a widescreen image containing side panel information and main panel information, and having an image aspect ratio greater than that of a standard television image; means for providing a first signal component representative of said side panel information; means for providing a second signal component representative of high frequency image information; and means for modulating a baseband auxiliary subcarrier other than a chrominance subcarrier with said first and second signal components.
Claim 2
Independent Claim
87 words
A system for processing a television-type signal, comprising: means for providing a television-type signal representative of a widescreen image containing side panel information and main panel information, and having an image aspect ratio greater than that of a standard television image; means for providing a first signal component representative of said side panel information; means for providing a second signal component representative of high frequency image information; and means for modulating a baseband auxiliary subcarrier other than a chrominance subcarrier with said first and second signal components.
Claim 3
Dependent Claim
27 words
A system according to claim 1, wherein said first signal component is representative of high frequency side panel image information substantially exclusive of low frequency image information.
Claim 4
Dependent Claim
26 words
A system according to claim 1 wherein said second signal component is representative of horizontal high frequency luminance information substantially exclusive of low frequency luminance information.
Claim 5
Independent Claim
169 words
A system for receiving a television-type signal comprising a first component containing image information of a first type and a second component containing image information of a second type, said first and second components modulating a base band auxiliary subcarrier other than a chrominance subcarrier; said system including: means for demodulating said modulated alternate subcarrier to recover said first and second components; first video signal processing means responsive to said recovered first component for producing a processed first image signal; second video signal processing means responsive to said recovered second component for producing a processed second image signal; and means for combining said processed first and second image signals to produce a combined image signal; wherein said television-type signal is representative of a widescreen image having side panel image information and main panel image information, and an aspect ratio greater than that of a standard television image; said first component is representative of said side panel image information; and said second component is representative of high frequency image information.
Claim 6
Independent Claim
169 words
A system for receiving a television-type signal comprising a first component containing image information of a first type and a second component containing image information of a second type, said first and second components modulating a base band auxiliary subcarrier other than a chrominance subcarrier; said system including: means for demodulating said modulated alternate subcarrier to recover said first and second components; first video signal processing means responsive to said recovered first component for producing a processed first image signal; second video signal processing means responsive to said recovered second component for producing a processed second image signal; and means for combining said processed first and second image signals to produce a combined image signal; wherein said television-type signal is representative of a widescreen image having side panel image information and main panel image information, and an aspect ratio greater than that of a standard television image; said first component is representative of said side panel image information; and said second component is representative of high frequency image information.
Claim 7
Dependent Claim
26 words
A system according to claim 4 wherein said first component is representative of high frequency side portion image information substantially exclusive of low frequency image information.
Claim 8
Dependent Claim
25 words
A system according to claim 4 wherein said second component is representative of horizontal high frequency luminance information substantially exclusive of low frequency luminance information.
Claim 9
Dependent Claim
25 words
A system according to claim 4 and further comprising frequency shifting means for coupling said recovered second component to said second video signal processing means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |