Patent US5161015A successfully refreshed from Google Patents.
US5161015A
Expired / Lapsed
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System for peaking a video signal with a control signal representative of the perceptual nature of blocks of video pixels
Assignee: LG Electronics Inc
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Filing: 1991-04-01
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Granted: 1992-11-03
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Expires: 2011-04-01
Abstract
Abstract A peaking system for a compressed digital video signal includes a transform coder for converting 8×8 blocks of video pixels into corresponding groups of transform coefficients and supplying the coefficients to an image classifier where the coefficients are classified according to their perceptual nature or image types, e.g. edge, flat area, texture, etc. of the video represented thereby. Control signals for horizontal and vertical perceptual classifications are developed and applied to a peaking filter for selectively peaking the video signal in accordance with the horizontal and vertical control signals. A receiver operates to recover the selectively peaked compressed video signal. In another embodiment, the transmitter supplies the video signal with the developed control signals for use by a receiver in selectively peaking the recovered video signal in accordance with the control signals.
Inventors
- 👤 Richard W. Citta
- 👤 Stephen M. Dicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:08
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/20; H04N5/205; H04N5/208
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
42 words
The method of processing a video signal comprising: coding said video signal into selected image types of different perceptual characteristics; generating a control signal in response to said selected image types; and peaking said video signal in accordance with said control signal.
Claim 2
Independent Claim
42 words
The method of processing a video signal comprising: coding said video signal into selected image types of different perceptual characteristics; generating a control signal in response to said selected image types; and peaking said video signal in accordance with said control signal.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein said coding comprises digitizing said video signal; transform coding said digitized video signal; and classifying said transform coded video signal into said selected image types.
Claim 4
Dependent Claim
19 words
The method of claim 2, further including compressing said peaked video signal; and transmitting said compressed peaked video signal.
Claim 5
Dependent Claim
35 words
The method of claim 3 wherein said selected image types coding generates a horizontal and a vertical control signal and further including horizontally and vertically peaking said video signal in response to said control signal.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein each of said horizontal control signal and said vertical control signal includes a diagonal contribution.
Claim 7
Dependent Claim
34 words
The method of claim 4 wherein each of said horizontal control signal and said vertical control signal is weighted to reflect the energy in a respective series of transform coefficients in a corresponding direction.
Claim 8
Dependent Claim
64 words
A processing system for a video signal representative of a plurality of pixels comprising: means for transforming blocks of said pixels into corresponding groups of transform coefficients; means for developing a control signal representative of the perceptual nature of each of said groups of coefficients; and means for peaking said pixel blocks in response to the control signal developed for the corresponding coefficient group.
Claim 9
Dependent Claim
64 words
A processing system for a video signal representative of a plurality of pixels comprising: means for transforming blocks of said pixels into corresponding groups of transform coefficients; means for developing a control signal representative of the perceptual nature of each of said groups of coefficients; and means for peaking said pixel blocks in response to the control signal developed for the corresponding coefficient group.
Claim 10
Dependent Claim
33 words
The system of claim 7, further including: means for compressing said peaked pixel blocks in response to the control signal for the corresponding coefficient group; and means for transmitting said compressed video signal.
Claim 11
Dependent Claim
19 words
The system of claim 7, further including: multiplexing means for combining said control signal and said peaked pixel blocks.
Claim 12
Dependent Claim
70 words
A receiver for processing a received signal including a control signal indicative of the perceptual nature of successive blocks of video pixels transmitted in the form of a corresponding series of transform coefficient groups comprising: means for recovering said control signal; means for processing said groups of transform coefficients to recover the corresponding video pixel blocks; and means for peaking said video pixel blocks in response to said control signal.
Claim 13
Dependent Claim
70 words
A receiver for processing a received signal including a control signal indicative of the perceptual nature of successive blocks of video pixels transmitted in the form of a corresponding series of transform coefficient groups comprising: means for recovering said control signal; means for processing said groups of transform coefficients to recover the corresponding video pixel blocks; and means for peaking said video pixel blocks in response to said control signal.
Claim 14
Dependent Claim
46 words
The receiver of claim 10 wherein a horizontal and a vertical control signal are provided and further including means for recovering said horizontal and said vertical control signals and means for peaking said video pixel blocks in response to said horizontal and said vertical control signals.
Claim 15
Dependent Claim
31 words
The receiver of claim 11 wherein said horizontal and vertical control signals reflect the degree to which a respective series of transform coefficients is characterized by a plurality of perceptual characteristics.
Claim 16
Dependent Claim
18 words
The receiver of claim 12 wherein each of said horizontal and vertical control signals includes a diagonal contribution.
Claim 17
Dependent Claim
31 words
The receiver of claim 12 wherein each of said horizontal and vertical control signals is weighted to reflect the energy in a respective series of transform coefficients in the corresponding direction.
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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) | 1995-11-03 | 1996-05-04 | 1996-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-03 | 2000-05-04 | 2000-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-03 | 2004-05-04 | 2004-11-03 | $7700.00 | Window Closed / Lapsed |