US4352122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adaptive composite-component transcoding hierarchy for digital video
Assignee: RCA Corp
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Filing: 1981-03-02
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Granted: 1982-09-28
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Expires: 2001-03-02
Abstract
Abstract An apparatus for providing component-to-composite and vice versa transcodings of a sampled video signal features generating steering bits that indicate which of combinations of surrounding samples of a composite signal has a component that provides the closest match to the corresponding component of an original component video signal. This allows successive transcodings with a minimum of crosstalk between components, e.g., luminance and chrominance.
Inventors
- 👤 Glenn A. Reitmeier
- 👤 Robert A. Dischert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/641
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
54 words
A method comprising forming a composite video signal from component video signals, transmitting samples of said composite video signal, and transmitting a control signal indicative of which of combinations of surrounding samples of said transmitted samples has a component that provides the closest match to the corresponding component of the original component video signals.
Claim 2
Independent Claim
54 words
A method comprising forming a composite video signal from component video signals, transmitting samples of said composite video signal, and transmitting a control signal indicative of which of combinations of surrounding samples of said transmitted samples has a component that provides the closest match to the corresponding component of the original component video signals.
Claim 3
Dependent Claim
13 words
A method as claimed in claim 1, wherein said components comprises luminance components.
Claim 4
Dependent Claim
30 words
A method as claimed in claim 1, wherein said first recited transmitting step comprises transmitting a luminance component together with an alternating one of an inphase and quadrature chroma signal.
Claim 5
Dependent Claim
43 words
A method as claimed in claim 1, wherein said second recited transmitting step comprises subtracting said corresponding component from said combinations to form differences, determining the minimum absolute value of said differences and generating said control signal to indicate said minimum absolute value.
Claim 6
Dependent Claim
31 words
A method as claimed in claim 1, wherein said second recited transmitting step comprises filtering said composite signal to provide said combinations so that substantially no amount of non-corresponding components remain.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 5, wherein the corresponding and noncorresponding components comprise luminance and chroma signals.
Claim 8
Dependent Claim
13 words
A method as claimed in claim 1, wherein said samples comprise digital samples.
Claim 9
Independent Claim
85 words
A method for receiving samples of a composite video signal and a control signal indicative of which of combinations of surrounding samples of said received samples has a component that provides the closest match to the corresponding component of said received samples of said composite signal, said method comprising generating said components of said surrounding combinations from said received composite signal samples, selecting said closest match component using said control signal, and subtracting said closest match component from said composite signal to produce non-corresponding components.
Claim 10
Independent Claim
85 words
A method for receiving samples of a composite video signal and a control signal indicative of which of combinations of surrounding samples of said received samples has a component that provides the closest match to the corresponding component of said received samples of said composite signal, said method comprising generating said components of said surrounding combinations from said received composite signal samples, selecting said closest match component using said control signal, and subtracting said closest match component from said composite signal to produce non-corresponding components.
Claim 11
Independent Claim
59 words
An apparatus comprising means for forming a composite video signal from component video signals, means for transmitting samples of said composite video signal, and means for transmitting a control signal indicative of which of combinations of surrounding samples of said transmitted samples has a component that provides the closest match to the corresponding component of the original video signal.
Claim 12
Independent Claim
59 words
An apparatus comprising means for forming a composite video signal from component video signals, means for transmitting samples of said composite video signal, and means for transmitting a control signal indicative of which of combinations of surrounding samples of said transmitted samples has a component that provides the closest match to the corresponding component of the original video signal.
Claim 13
Dependent Claim
13 words
An apparatus as claimed in claim 9, wherein said components comprises luminance components.
Claim 14
Dependent Claim
29 words
An apparatus as claimed in claim 9, wherein said first recited transmitting means transmits a luminance component together with an alternating one of an inphase and quadrature chroma signal.
Claim 15
Dependent Claim
48 words
An apparatus as claimed in claim 9, wherein said second recited transmitting means comprises means for subtracting said corresponding component from said combinations to form differences, means for determining the minimum absolute value of said differences and for generating said control signal to indicate said minimum absolute value.
Claim 16
Dependent Claim
33 words
An apparatus as claimed in claim 9, wherein said second recited transmitting means comprises means for filtering said composite signal to provide said combinations so that substantially no amount of non-corresponding components remain.
Claim 17
Dependent Claim
18 words
An apparatus as claimed in claim 13, wherein the corresponding and non-corresponding components comprise luminance and chroma signals.
Claim 18
Dependent Claim
13 words
An apparatus as claimed in claim 9, wherein said samples comprise digital samples.
Claim 19
Independent Claim
91 words
An apparatus for receiving samples of a composite video signal and a control signal indicative of which of combinations of surrounding samples of said received samples has a component that provides the closest match to the corresponding component of said received samples of said composite signal, said method comprising means for generating said components of said surrounding combinations from said received composite signal samples, means for selecting said closest match component using said control signal, and means for subtracting said closest match component from said composite signal to produce non-corresponding components.
Claim 20
Independent Claim
91 words
An apparatus for receiving samples of a composite video signal and a control signal indicative of which of combinations of surrounding samples of said received samples has a component that provides the closest match to the corresponding component of said received samples of said composite signal, said method comprising means for generating said components of said surrounding combinations from said received composite signal samples, means for selecting said closest match component using said control signal, and means for subtracting said closest match component from said composite signal to produce non-corresponding components.
References Cited (Backward Citations)
US4141034A
Cited
US4320416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |