Patent US6741617B2 successfully refreshed from Google Patents.
US6741617B2
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Arrangement for decoding digital video signals
Assignee: Koninklijke Philips NV
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Filing: 1999-12-13
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Granted: 2004-05-25
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Expires: 2019-12-13
Abstract
Abstract The invention relates to an arrangement for deriving an ancillary signal from a compressed digital video signal (e.g. MPEG). The ancillary signal comprises selected parts of the main signal, for example, the DC coefficients of I-pictures, or the unscrambled parts. The ancillary signal thus obtained can be used for display in a (multi-) picture-in-picture television receiver, or as an “appetizer” in order to encourage the user to pay a subscription fee. The ancillary signal can separately be recorded in digital video recorders so as to assist the user in finding the beginning of a scrambled program on tape. The ancillary signal can also be generated at the transmitter end and transmitted at a low bit rate. A decoder for decoding such an ancillary signal is considerably simpler and less expensive than a full-spec MPEG decoder.
Inventors
- 👤 Jürgen F. Rosengren
- 👤 Ronald W. J. J. Saeijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/433; H04N21/4334; H04N21/20; H04N21/23; H04N21/235; H04N21/236; H04N21/2365; H04N21/41; H04N21/426; H04N21/434; H04N21/4345; H04N21/4347; H04N21/435; H04N5/00; H04N5/44; H04N5/445; H04N5/45
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
70 words
A method of receiving a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictively encoded pictures, comprising the step of: receiving at a demultiplexer the first video signal and the second video signal; and selecting and decoding only said autonomously encoded pictures for display as the picture-in-picture.
Claim 2
Independent Claim
70 words
A method of receiving a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictively encoded pictures, comprising the step of: receiving at a demultiplexer the first video signal and the second video signal; and selecting and decoding only said autonomously encoded pictures for display as the picture-in-picture.
Claim 3
Dependent Claim
62 words
A television receiver comprising: a demultiplexer which receives a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictive encoded pictures; and a picture-in-picture (PIP) decoder which selects and decodes only said autonomously encoded pictures for display as the picture-in-picture.
Claim 4
Dependent Claim
62 words
A television receiver comprising: a demultiplexer which receives a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictive encoded pictures; and a picture-in-picture (PIP) decoder which selects and decodes only said autonomously encoded pictures for display as the picture-in-picture.
Claim 5
Dependent Claim
43 words
A receiver as set forth in claim 2 , wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the PIP decoder which selects and decodes the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 6
Independent Claim
64 words
A method of receiving a plurality of video signals encoded as elementary video streams each of which includes both autonomously encoded pictures and predictively encoded pictures, comprising the steps of: receiving at a demultiplexer the first video signal and the second video signal; selecting and decoding said autonomously encoded pictures; and simultaneously providing for display the respective plurality of pictures as a mosaic picture.
Claim 7
Independent Claim
64 words
A method of receiving a plurality of video signals encoded as elementary video streams each of which includes both autonomously encoded pictures and predictively encoded pictures, comprising the steps of: receiving at a demultiplexer the first video signal and the second video signal; selecting and decoding said autonomously encoded pictures; and simultaneously providing for display the respective plurality of pictures as a mosaic picture.
Claim 8
Dependent Claim
105 words
A receiver comprising: a demultiplexer which receives a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; a multi-picture-in-picture (MPIP) decoder which selects and decodes only said autonomously encoded pictures included in said plurality of video signals; and a control device which simultaneously displays said selected and decoded said autonomously encoded pictures stored by said MPIP decoder as a mosaic picture; wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the MPIP decoder which selects and decodes the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 9
Dependent Claim
105 words
A receiver comprising: a demultiplexer which receives a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; a multi-picture-in-picture (MPIP) decoder which selects and decodes only said autonomously encoded pictures included in said plurality of video signals; and a control device which simultaneously displays said selected and decoded said autonomously encoded pictures stored by said MPIP decoder as a mosaic picture; wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the MPIP decoder which selects and decodes the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 10
Dependent Claim
42 words
A receiver as set forth in claim 5 , further including a control device which selects one of the displayed plurality of pictures and is adapted to select, decode, and display the video signal from which the selected picture has been derived.
Claim 11
Dependent Claim
58 words
A television receiver comprising: means for demultiplexing a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictively encoded pictures; and means for selecting and decoding only said autonomously encoded pictures for display as the picture-in-picture.
Claim 12
Dependent Claim
58 words
A television receiver comprising: means for demultiplexing a first video signal representing a main picture and a second video signal representing a picture-in-picture, the second video signal being encoded as an elementary stream including both autonomously encoded pictures and predictively encoded pictures; and means for selecting and decoding only said autonomously encoded pictures for display as the picture-in-picture.
Claim 13
Dependent Claim
42 words
A receiver as set forth in claim 7 , wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the means for selecting and decoding the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 14
Dependent Claim
54 words
A television receiver comprising: means for demultiplexing a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; means for selecting and decoding only said autonomously encoded pictures; and display means for simultaneously providing for display the respective plurality of pictures as a mosaic picture.
Claim 15
Dependent Claim
54 words
A television receiver comprising: means for demultiplexing a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; means for selecting and decoding only said autonomously encoded pictures; and display means for simultaneously providing for display the respective plurality of pictures as a mosaic picture.
Claim 16
Dependent Claim
42 words
A receiver as set forth in claim 9 , wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the means for selecting and decoding the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 17
Dependent Claim
41 words
A receiver as set forth in claim 9 , further including user control means for selecting one of the displayed plurality of pictures and adapted to select, decode, and display the video signal from which the selected picture has been derived.
Claim 18
Dependent Claim
63 words
A television receiver comprising: a demultiplexer which receives a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; a multi-picture-in-picture decoder which selects and decodes only said autonomously encoded pictures; and a control device which simultaneously provides for display the respective plurality of pictures stored by said MPIP decoder as a mosaic picture.
Claim 19
Dependent Claim
63 words
A television receiver comprising: a demultiplexer which receives a plurality of video signals encoded as elementary video streams, each including both autonomously encoded pictures and predictively encoded pictures; a multi-picture-in-picture decoder which selects and decodes only said autonomously encoded pictures; and a control device which simultaneously provides for display the respective plurality of pictures stored by said MPIP decoder as a mosaic picture.
Claim 20
Dependent Claim
84 words
A method as set forth in claim 1 further comprising the steps of: receiving in a demultiplexer a plurality of video signals encoded as elementary video streams, wherein each of said plurality of video signals includes both autonomously encoded pictures and predictively encoded pictures; selecting only said autonomously encoded pictures in a multi-picture-in-picture decoder; decoding said autonomously encoded pictures in said multi-picture-in-picture decoder; and utilizing a control device to simultaneously display said plurality of pictures stored by said MPIP decoder as a mosaic picture.
Claim 21
Dependent Claim
40 words
A method as set forth in claim 13 further comprising the steps of: selecting one of said displayed plurality of pictures; decoding a video signal from said selected one of said displayed plurality of pictures; and displaying said video signal.
Claim 22
Dependent Claim
20 words
A method as set forth in claim 14 wherein said autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients.
Claim 23
Dependent Claim
84 words
A method is set forth in claim 4 further comprising the steps of: receiving in a demultiplexer a plurality of video signals encoded as elementary video streams, wherein each of said plurality of video signals includes both autonomously encoded pictures and predictively encoded pictures; selecting only said autonomously encoded pictures in a multi-picture-in-picture decoder; decoding said autonomously encoded pictures in said multi-picture-in-picture decoder; and utilizing a control device to simultaneously display said plurality of pictures stored by said MPIP decoder as a mosaic picture.
Claim 24
Dependent Claim
40 words
A method as set forth in claim 16 further comprising the steps of: selecting one of said displayed plurality of pictures; decoding a video signal from said selected one of said displayed plurality of pictures; and displaying said video signal.
Claim 25
Dependent Claim
20 words
A method as set forth in claim 17 wherein said autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients.
Claim 26
Dependent Claim
43 words
A television receiver as set forth in claim 12 wherein the autonomously encoded pictures comprise transform-coded blocks having respective DC coefficients and the multi-picture-in-picture decoder for selecting and decoding the autonomously encoded pictures is adapted to select and decode only said DC coefficients.
Claim 27
Dependent Claim
41 words
A television receiver as set forth in claim 13 further including user control means for selecting one of the displayed plurality of pictures and adapted to select, decode, and display the video signal from which the selected picture has been derived.
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) | 2007-05-25 | 2007-11-24 | 2008-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-25 | 2011-11-24 | 2012-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-25 | 2015-11-24 | 2016-05-25 | $7700.00 | Window Closed / Lapsed |