Patent US2647707A successfully refreshed from Google Patents.
Patent US5666170A successfully refreshed from Google Patents.
US5666170A
Expired / Lapsed
US
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Apparatus for decoding video signals encoded in different formats
Assignee: Thomson Licensing SAS
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Filing: 1995-07-12
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Granted: 1997-09-09
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Expires: 2015-07-12
Abstract
Abstract An adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates. The apparatus also includes an adaptive deinterleaver for deinterleaving the first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions. In addition, the apparatus includes an output signal processor for processing the deinterleaved output data to provide the decoded output data. The demodulator may also incorporate a an adaptive error decoder for detecting and correcting errors in the deinterleaved output. In addition, a signal quality detector may provide an estimate of the error in the decoded output data. The apparatus is automatically configured to be compatible with the encoded video signal format in response to the error estimate.
Inventors
- 👤 John S. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0064; H04L1/0065; H04N; H04N7/00; H04N7/24; H04L1/0045; H04L1/0046; H04L1/0054; H04L1/0067; H04L1/0068; H04L1/0071; H04L27/00; H04L27/0008; H04N21/00; H04N21/20; H04N21/23; H04N21/238; H04N21/2383; H04N21/40; H04N21/41; H04N21/426; H04N21/43; H04N21/438; H04N21/4382; H04N5/00; H04N5/44; H04N5/455
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
112 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, apparatus comprising: an adaptive decoder for providing a decoded output as a function of a code rate selected from a plurality of code rates, said decoded output being provided from an input signal encoded in different signal formats for different transmission modes; an adaptive deinterleaver for deinterleaving said decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions, wherein said adaptive deinterleaver is configured with said selected deinterleaving function; and an output signal processor for processing deinterleaved output data.
Claim 2
Dependent Claim
112 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, apparatus comprising: an adaptive decoder for providing a decoded output as a function of a code rate selected from a plurality of code rates, said decoded output being provided from an input signal encoded in different signal formats for different transmission modes; an adaptive deinterleaver for deinterleaving said decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions, wherein said adaptive deinterleaver is configured with said selected deinterleaving function; and an output signal processor for processing deinterleaved output data.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1, wherein said adaptive decoder is an adaptive Viterbi decoder configured with a selected decoding function to decode said input signal.
Claim 4
Dependent Claim
34 words
Apparatus according to claim 1, wherein said output processor includes a descrambler for descrambling said deinterleaved output data and said deinterleaved output data bypasses said descrambler when said input signal exhibits a predetermined format.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 1 further including a demodulator for demodulating a modulated video input signal to provide said input signal encoded in different signal formats.
Claim 6
Dependent Claim
99 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, apparatus comprising: an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates; an adaptive deinterleaver for deinterleaving said first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions; and an output signal processor for processing deinterleaved output data wherein said adaptive decoder is bypassed when said encoded video signal exhibits a predetermined format.
Claim 7
Dependent Claim
99 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, apparatus comprising: an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates; an adaptive deinterleaver for deinterleaving said first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions; and an output signal processor for processing deinterleaved output data wherein said adaptive decoder is bypassed when said encoded video signal exhibits a predetermined format.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 5, further including a differential decoder for providing a differentially decoded output as said first decoded output when said encoded video signal exhibits said predetermined format.
Claim 9
Dependent Claim
15 words
Apparatus according to claim 4, wherein said demodulator demodulates a QAM modulated video input signal.
Claim 10
Dependent Claim
34 words
Apparatus according to claim 1, further including an adaptive byte mapper for selectively mapping data to be deinterleaved as a function of said different signal formats and different symbol constellations of said input signal.
Claim 11
Dependent Claim
15 words
Apparatus according to claim 7, wherein said demodulator demodulates a QPSK modulated video input signal.
Claim 12
Dependent Claim
38 words
Apparatus according to claim 1, wherein said adaptive decoder and adaptive deinterleaver are automatically configured to be compatible with the format of said encoded video signal in response to an estimate of error in said deinterleaved output data.
Claim 13
Dependent Claim
47 words
Apparatus according to claim 1, further including an adaptive error processor for correcting errors in said deinterleaved output data, said error processor adapting between different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length.
Claim 14
Dependent Claim
25 words
Apparatus according to claim 11, wherein said adaptive error processor adapts between different signal formats by adapting to parity data in said deinterleaved output data.
Claim 15
Dependent Claim
14 words
Apparatus according to claim 11, wherein said adaptive error processor is a Reed-Solomon decoder.
Claim 16
Dependent Claim
122 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, apparatus comprising: an adaptive decoder for providing a decoded output as a function of a code rate selected from a plurality of code rates, said decoded output being provided from an input signal encoded in different signal formats for different transmission modes; an adaptive error decoder for detecting and correcting errors in said decoded output, said error decoder adapting between different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and an output signal processor for processing said error corrected data.
Claim 17
Dependent Claim
122 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, apparatus comprising: an adaptive decoder for providing a decoded output as a function of a code rate selected from a plurality of code rates, said decoded output being provided from an input signal encoded in different signal formats for different transmission modes; an adaptive error decoder for detecting and correcting errors in said decoded output, said error decoder adapting between different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and an output signal processor for processing said error corrected data.
Claim 18
Dependent Claim
14 words
Apparatus according to claim 14, wherein said adaptive error decoder is a Reed-Solomon decoder.
Claim 19
Dependent Claim
104 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, apparatus comprising: an adaptive deinterleaver for deinterleaving said encoded video signal in accordance with a deinterleaving function selected from a plurality of deinterleaving functions; and an adaptive error decoder for detecting and correcting errors in said deinterleaved output, said error decoder adapting between different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and an output signal processor for processing said error corrected data.
Claim 20
Dependent Claim
104 words
In a system for receiving and adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, apparatus comprising: an adaptive deinterleaver for deinterleaving said encoded video signal in accordance with a deinterleaving function selected from a plurality of deinterleaving functions; and an adaptive error decoder for detecting and correcting errors in said deinterleaved output, said error decoder adapting between different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and an output signal processor for processing said error corrected data.
Claim 21
Dependent Claim
15 words
Apparatus according to claim 16, wherein said adaptive error decoder function is a Reed-Solomon function.
Claim 22
Dependent Claim
16 words
Apparatus according to claim 16, wherein said adaptive deinterleaver is configured with said selected deinterleaving function.
Claim 23
Independent Claim
100 words
A method for adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, comprising the steps of: adaptively decoding an input signal as a function of a code rate selected from a plurality of code rates to provide a decoded output, said input signal being encoded in different signal formats for different transmission modes; selecting a deinterleaving function from a plurality of deinterleaving functions; configuring said adaptive deinterleaver with said selected deinterleaving function; adaptively deinterleaving said decoded output using said selected deinterleaving function; and processing said deinterleaved data.
Claim 24
Independent Claim
100 words
A method for adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission modes, comprising the steps of: adaptively decoding an input signal as a function of a code rate selected from a plurality of code rates to provide a decoded output, said input signal being encoded in different signal formats for different transmission modes; selecting a deinterleaving function from a plurality of deinterleaving functions; configuring said adaptive deinterleaver with said selected deinterleaving function; adaptively deinterleaving said decoded output using said selected deinterleaving function; and processing said deinterleaved data.
Claim 25
Independent Claim
107 words
A method of adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, comprising the steps of: selecting a code rate from a plurality of code rates; adaptively decoding an input signal encoded in different signal formats for different transmission modes as a function of said selected code rate to provide a decoded output; adaptively detecting errors in said decoded output; adaptively correcting said detected errors in said decoded output by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and processing said error corrected data.
Claim 26
Independent Claim
107 words
A method of adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, comprising the steps of: selecting a code rate from a plurality of code rates; adaptively decoding an input signal encoded in different signal formats for different transmission modes as a function of said selected code rate to provide a decoded output; adaptively detecting errors in said decoded output; adaptively correcting said detected errors in said decoded output by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and processing said error corrected data.
Claim 27
Independent Claim
94 words
A method for adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, comprising the steps of: selecting a deinterleaving function from a plurality of deinterleaving functions; adaptively deinterleaving said decoded output using said selected deinterleaving function; detecting errors in deinterleaved output of different signal formats; adaptively correcting an error in deinterleaved output of different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and processing said error corrected data.
Claim 28
Independent Claim
94 words
A method for adaptively processing a video signal encoded in one of a plurality of different formats suitable for satellite, terrestrial or cable transmission, comprising the steps of: selecting a deinterleaving function from a plurality of deinterleaving functions; adaptively deinterleaving said decoded output using said selected deinterleaving function; detecting errors in deinterleaved output of different signal formats; adaptively correcting an error in deinterleaved output of different signal formats by changing at least one of: (a) error function type, (b) error correction code length, and (c) data packet length; and processing said error corrected data.
Claim 29
Dependent Claim
20 words
A method according to claim 21 further including the step of configuring said adaptive deinterleaver with said selected deinterleaving function.
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |