US6700626B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video-apparatus with peaking filter
Assignee: Koninklijke Philips NV
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Filing: 2001-03-15
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Granted: 2004-03-02
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Expires: 2021-03-15
Abstract
Abstract A video-apparatus includes a peaking filter ( 3 - 5 ), which, in response to applied video signals, supplies peaking signals (Vp) that are combined with the applied video signals. The peaking filter ( 3 - 5 ) includes a first ( 3 ) and a second ( 4 ) 1 st -first order high-pass or band-pass filter in cascade configuration, while a unit ( 5, 6 ) for determining the peaking strength is arranged between the first ( 3 ) and second ( 4 ) filters.
Inventors
- 👤 Jeroen Hubert Christoffel Jacobus Stessen
- 👤 Christian Hentschel
- 👤 Michel Wouter Nieuwenhuizen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:34
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/20; H04N5/205; H04N5/208
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
A peaking device, comprising: a peaking filter for supplying peaking signals in response to applied video signals, the peaking filter including a first and a second 1 st -order high-pass or band-pass filter in cascade configuration, and means for determining a peaking strength arranged between said first and second filters; and means for combining the peaking signals with the applied video signals to obtain output peaked video signals, wherein, in a range of possible slope values in said applied video signal, said determining means provides more peaking for slope values in the middle of said range than for slope values in said range which are smaller than or exceeding said middle slope values.
Claim 2
Dependent Claim
113 words
A peaking device, comprising: a peaking filter for supplying peaking signals in response to applied video signals, the peaking filter including a first and a second 1 st -order high-pass or band-pass filter in cascade configuration, and means for determining a peaking strength arranged between said first and second filters; and means for combining the peaking signals with the applied video signals to obtain output peaked video signals, wherein, in a range of possible slope values in said applied video signal, said determining means provides more peaking for slope values in the middle of said range than for slope values in said range which are smaller than or exceeding said middle slope values.
Claim 3
Dependent Claim
91 words
A peaking device, comprising: a peaking filter for supplying peaking signals in response to applied video signals), the peaking filter including a first and a second 1 st -order high-pass or band-pass filter in cascade configuration, and means for determining a peaking strength arranged between said first and second filters; and means for combining the peaking signals with the applied video signals to obtain output peaked video signals, characterized in that the first and/or the second 1 st -order filter is provided with filter coefficients (−1, +1) or (−1, 0, +1).
Claim 4
Dependent Claim
91 words
A peaking device, comprising: a peaking filter for supplying peaking signals in response to applied video signals), the peaking filter including a first and a second 1 st -order high-pass or band-pass filter in cascade configuration, and means for determining a peaking strength arranged between said first and second filters; and means for combining the peaking signals with the applied video signals to obtain output peaked video signals, characterized in that the first and/or the second 1 st -order filter is provided with filter coefficients (−1, +1) or (−1, 0, +1).
Claim 5
Dependent Claim
23 words
The peaking device as claimed in claim 1 , characterized in that the means for determining the peaking strength comprises a look-up table.
Claim 6
Dependent Claim
114 words
A peaking method, comprising the steps of: subjecting applied video signals to a first 1 st -order high-pass or band-pass filter to obtain differentiated signals; determining a peaking strength in dependence upon the differentiated signals, to produce adjusted differentiated signals; subjecting the adjusted differentiated signals to a second 1 st -order high-pass or band-pass filter to obtain peaking signals; and combining the peaking signals with the applied video signals, wherein, in a range of possible slope values in said applied video signal, said determining step provides more peaking for slope values in the middle of said range than for slope values in said range which are smaller than or exceeding said middle slope values.
Claim 7
Dependent Claim
114 words
A peaking method, comprising the steps of: subjecting applied video signals to a first 1 st -order high-pass or band-pass filter to obtain differentiated signals; determining a peaking strength in dependence upon the differentiated signals, to produce adjusted differentiated signals; subjecting the adjusted differentiated signals to a second 1 st -order high-pass or band-pass filter to obtain peaking signals; and combining the peaking signals with the applied video signals, wherein, in a range of possible slope values in said applied video signal, said determining step provides more peaking for slope values in the middle of said range than for slope values in said range which are smaller than or exceeding said middle slope values.
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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) | 2007-03-02 | 2007-09-01 | 2008-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-02 | 2011-09-01 | 2012-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-02 | 2015-09-01 | 2016-03-02 | $7700.00 | Window Closed / Lapsed |