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US5825424A
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MPEG system which decompresses and recompresses image data before storing image data in a memory and in accordance with a resolution of a display device
Assignee: Technicolor USA Inc
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Filing: 1996-06-19
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Granted: 1998-10-20
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Expires: 2016-06-19
Abstract
Abstract A television receiver with an MPEG decoder is configurable for full high definition decoding and display, or reduced cost lower definition display. The MPEG decoder (10-33) uses a controllable dual-mode data reduction network selectively employing horizontal detail reduction (29) and data re-compression (30) between the decoder and the decoder frame memory (20) from which image information to be displayed (27) is derived. The amount of data reduction is manufacturer selected in accordance with the resolution of the display device, e.g., equal to or less than high definition resolution. The frame memory size is also manufacturer selected in accordance with the resolution of the display device.
Inventors
- 👤 Barth Alan Canfield
- 👤 Wai-Man Lam
- 👤 Billy Wesley Beyers, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:40
CPC Classifications
G; G06; G06T; G06T3/00; G06T3/40; G06T3/4084; H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/44; H04N19/00; H04N19/42; H04N19/423; H04N19/426; H04N19/428; H04N19/60; H04N19/61; H04N21/20; H04N21/25; H04N21/266; H04N21/2662
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
101 words
In a system for processing an MPEG coded datastream containing high definition image, apparatus comprising: an MPEG decoder for processing said image representative information; a memory for storing information processed by said MPEG decoder; a display device with a predetermined image resolution for displaying image information derived from information stored by said memory; and a data reduction network including a data compressor for compressing said information included in said decoder, for providing data reduced information to said memory; wherein the amount of data reduction provided by said data reduction network is determined in accordance with said resolution of said display device.
Claim 2
Dependent Claim
101 words
In a system for processing an MPEG coded datastream containing high definition image, apparatus comprising: an MPEG decoder for processing said image representative information; a memory for storing information processed by said MPEG decoder; a display device with a predetermined image resolution for displaying image information derived from information stored by said memory; and a data reduction network including a data compressor for compressing said information included in said decoder, for providing data reduced information to said memory; wherein the amount of data reduction provided by said data reduction network is determined in accordance with said resolution of said display device.
Claim 3
Dependent Claim
38 words
A system according to claim 1, wherein said decoder includes means for decompressing said datastream to produced decompressed information; said data reduction network includes a compression network for re-compressing said decompressed information prior to storage by said memory.
Claim 4
Dependent Claim
41 words
A system according to claim 2, wherein said data reduction network includes a compression network for re-compressing said decompressed information prior to storage by said memory; and a data decimation network for decimating information to be compressed by said compression network.
Claim 5
Dependent Claim
23 words
A system according to claim 3, wherein said decimation network provides horizontally decimated image information and processes vertical image information substantially without modification.
Claim 6
Dependent Claim
26 words
A system according to claim 3, wherein said decimation network provides horizontal decimation by a factor of two; and said compression network provides pixel block compression.
Claim 7
Dependent Claim
27 words
A system according to claim 1, wherein said data reduction network is situated in an integrated circuit; and said memory is located external to said integrated circuit.
Claim 8
Dependent Claim
44 words
A system according to claim 1, wherein said MPEG decoder includes a decompressor for decompressing said MPEG coded datastream; a motion information processing network for processing decompressed information from said decompressor; and wherein said data reduction network is included in said motion processing network.
Claim 9
Dependent Claim
13 words
A system according to claim 1, wherein said data reduction network is programmable.
Claim 10
Independent Claim
93 words
A method for processing an input MPEG coded datastream containing high definition image information, comprising the steps of: decompressing said MPEG coded datastream to produce decompressed MPEG information; data-reducing said decompressed information to produce data-reduced information, said data-reducing step including the step of recompressing said decompressed information; storing said data-reduced information in a memory; and displaying information derived from said memory with a display device having a predetermined image resolution; wherein the amount of data reduction produced by said data reducing step is determined in accordance with said resolution of said display device.
Claim 11
Independent Claim
93 words
A method for processing an input MPEG coded datastream containing high definition image information, comprising the steps of: decompressing said MPEG coded datastream to produce decompressed MPEG information; data-reducing said decompressed information to produce data-reduced information, said data-reducing step including the step of recompressing said decompressed information; storing said data-reduced information in a memory; and displaying information derived from said memory with a display device having a predetermined image resolution; wherein the amount of data reduction produced by said data reducing step is determined in accordance with said resolution of said display device.
Claim 12
Dependent Claim
24 words
A method according to claim 9, wherein said data-reducing step includes the steps of horizontally decimating image information; and compressing horizontally decimated image information.
Claim 13
Dependent Claim
14 words
A method according to claim 9, wherein said amount of data reduction is programmable.
Claim 14
Dependent Claim
98 words
In a system for processing an MPEG coded input signal containing high definition image information, apparatus comprising: an MPEG compatible first signal processor for decoding said MPEG coded signal; a second signal processor responsive to a decoded signal from said first processor for providing a translated version of a decoded signal from said signal processor; a memory; and an adaptive interface network for conveying said translated signal to said memory, said interface having an input path for receiving said translated data, and an output path with an adaptive bit width for conveying said translated data to said memory.
Claim 15
Dependent Claim
98 words
In a system for processing an MPEG coded input signal containing high definition image information, apparatus comprising: an MPEG compatible first signal processor for decoding said MPEG coded signal; a second signal processor responsive to a decoded signal from said first processor for providing a translated version of a decoded signal from said signal processor; a memory; and an adaptive interface network for conveying said translated signal to said memory, said interface having an input path for receiving said translated data, and an output path with an adaptive bit width for conveying said translated data to said memory.
Claim 16
Dependent Claim
41 words
A system according to claim 12 and further including a display device having a predetermined image resolution for displaying information derived from said memory; and wherein said adaptive bit width is determined in accordance with said resolution of said display device.
Claim 17
Dependent Claim
24 words
Apparatus according to claim 12, wherein said first processor is situated in an integrated circuit; and said memory is located external to integrated circuit.
Claim 18
Dependent Claim
66 words
Apparatus according to claim 14, wherein said output path of said interface is a data bus external to said integrated circuit; said input path of said interface is a data bus internal to said integrated circuit; and said interface is arranged to adaptively select a data bit width of said output path which includes bit widths different than the bit width of said internal data bus.
Claim 19
Dependent Claim
22 words
Apparatus according to claim 15, wherein said output path includes bit widths less than the bit width of said internal data bus.
Claim 20
Dependent Claim
16 words
Apparatus according to claim 14, wherein said interface is a multiplexer located in said integrated circuit.
Claim 21
Dependent Claim
30 words
Apparatus according to claim 12, wherein said second processor includes a dual operating mode data reduction network; and said interface conveys data from said data reduction network to said memory.
Claim 22
Dependent Claim
21 words
Apparatus according to claim 18, wherein said data reduction network includes a data compressor preceded by a horizontal data decimation network.
Claim 23
Dependent Claim
154 words
In a system for processing high definition input image representative information, an MPEG compatible decoder comprising: an input network for receiving a datastream of compressed high definition image representative data; a decompressor for decompressing compressed data from said input network; a motion information processing network for processing decompressed data from said decompressor; a compressor for recompressing data processed by said motion processing network; a memory; an output image processor for processing data stored by said memory, said processor including a display device with a predetermined image resolution; and an adaptive interface network for conveying said recompressed data from said compressor to said memory, said interface having an input data path for receiving said recompressed data, and an output data path with an adaptive data bit width for conveying said recompressed data to said memory, wherein said output data path exhibits a data bit width determined in accordance with said resolution of said display device.
Claim 24
Dependent Claim
154 words
In a system for processing high definition input image representative information, an MPEG compatible decoder comprising: an input network for receiving a datastream of compressed high definition image representative data; a decompressor for decompressing compressed data from said input network; a motion information processing network for processing decompressed data from said decompressor; a compressor for recompressing data processed by said motion processing network; a memory; an output image processor for processing data stored by said memory, said processor including a display device with a predetermined image resolution; and an adaptive interface network for conveying said recompressed data from said compressor to said memory, said interface having an input data path for receiving said recompressed data, and an output data path with an adaptive data bit width for conveying said recompressed data to said memory, wherein said output data path exhibits a data bit width determined in accordance with said resolution of said display device.
Claim 25
Independent Claim
112 words
A method for processing input MPEG coded signal containing high definition image representative information comprising the steps of: decoding said MPEG coded signal to produce decoded MPEG data; translating said MPEG data to produce translated data; and storing said translated signal in a memory; displaying said stored signal on a display device having a predetermined resolution; wherein said storing step includes the further step of adaptively conveying said translated data to said memory via an input path for receiving said translated data, and an output path for conveying said translated data to said memory, said output path exhibiting a data bit width determined in accordance with said resolution of said display device.
Claim 26
Independent Claim
112 words
A method for processing input MPEG coded signal containing high definition image representative information comprising the steps of: decoding said MPEG coded signal to produce decoded MPEG data; translating said MPEG data to produce translated data; and storing said translated signal in a memory; displaying said stored signal on a display device having a predetermined resolution; wherein said storing step includes the further step of adaptively conveying said translated data to said memory via an input path for receiving said translated data, and an output path for conveying said translated data to said memory, said output path exhibiting a data bit width determined in accordance with said resolution of said display device.
Claim 27
Independent Claim
124 words
A system for processing an input MPEG coded signal containing high definition image representative information, comprising the steps of: decompressing said input signal to produce a decompressed signal; processing said decompressed signal with respect to image motion to produce a translated signal, said processing step including the further step of re-compressing data; storing said re-compressed data in a memory; and displaying stored data on a display device; wherein said storing step further includes the step of adaptively conveying said re-compressed data to said memory via an input path for receiving said re-compressed data, and an output path for conveying said re-compressed data to said memory, said output path exhibiting an adaptive data bit width determined in accordance with said resolution of said display device.
Claim 28
Independent Claim
124 words
A system for processing an input MPEG coded signal containing high definition image representative information, comprising the steps of: decompressing said input signal to produce a decompressed signal; processing said decompressed signal with respect to image motion to produce a translated signal, said processing step including the further step of re-compressing data; storing said re-compressed data in a memory; and displaying stored data on a display device; wherein said storing step further includes the step of adaptively conveying said re-compressed data to said memory via an input path for receiving said re-compressed data, and an output path for conveying said re-compressed data to said memory, said output path exhibiting an adaptive data bit width determined in accordance with said resolution of said display device.
References Cited (Backward Citations)
US5262854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-19 | 2002-04-20 | 2002-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-19 | 2006-04-20 | 2006-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-19 | 2010-04-20 | 2010-10-20 | $7700.00 | Window Closed / Lapsed |