US5384725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for encoding and decoding using wavelet-packets
Assignee: Yale University
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Filing: 1990-05-18
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Granted: 1995-01-24
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Expires: 2010-05-18
Abstract
Abstract The disclosure involves the use of a library of modulated wavelet-packets which are effective in providing both precise frequency localization and space localization. An aspect of the disclosure involves feature extraction by determination of the correlations of a library of waveforms with the signal being processed, while maintaining orthogonality of the set of waveforms selected (i.e. a selected advantageous basis). In a disclosed embodiment, a method is provided for encoding and decoding an input signal, such as an audio or video signal, comprising the following steps: applying combinations of dilations and translations of a wavelet to the input signal to obtain processed values; computing the information costs of the processed values; selecting, as encoded signals, an orthogonal group of processed values, the selection being dependent on the computed information costs; and decoding the encoded signals to obtain an output signal.
Inventors
- 👤 Ronald Coifman
- 👤 Yves Meyer
- 👤 Mladen V. Wickerhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:58
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/14; G06T; G06T9/00; G06T9/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
Apparatus for encoding and decoding an input audio or video signal, comprising: means for converting the signal to digital form; a memory; means for applying combinations of dilations and translations of a wavelet to the digitized input signal to obtain processed values, and for storing said processed values in said memory; means for computing the information costs of the stored processed values; means for selecting, as encoded signals, an orthogonal group of stored processed values, the selection being dependent on the computed information costs; means for transmitting the encoded signals; means for receiving the transmitted encoded signals; and means for decoding the received encoded signals to obtain an output signal.
Claim 2
Dependent Claim
110 words
Apparatus for encoding and decoding an input audio or video signal, comprising: means for converting the signal to digital form; a memory; means for applying combinations of dilations and translations of a wavelet to the digitized input signal to obtain processed values, and for storing said processed values in said memory; means for computing the information costs of the stored processed values; means for selecting, as encoded signals, an orthogonal group of stored processed values, the selection being dependent on the computed information costs; means for transmitting the encoded signals; means for receiving the transmitted encoded signals; and means for decoding the received encoded signals to obtain an output signal.
Claim 3
Dependent Claim
95 words
Apparatus for encoding and decoding an input audio or video signal, comprising: means for converting the signal to digital form; a memory; means for applying combinations of dilations and translations of the wavelet having a plurality of vanishing moments to the input signal to obtain processed values and for storing said processed values in said memory; means for selecting, as encoded signals, an orthogonal group of stored processed values; means for transmitting the encoded signals; means for receiving the transmitted encoded signals; and means for decoding the received encoded signals to obtain an output signal.
Claim 4
Dependent Claim
95 words
Apparatus for encoding and decoding an input audio or video signal, comprising: means for converting the signal to digital form; a memory; means for applying combinations of dilations and translations of the wavelet having a plurality of vanishing moments to the input signal to obtain processed values and for storing said processed values in said memory; means for selecting, as encoded signals, an orthogonal group of stored processed values; means for transmitting the encoded signals; means for receiving the transmitted encoded signals; and means for decoding the received encoded signals to obtain an output signal.
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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) | 1998-01-23 | 1998-07-25 | 1999-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-23 | 2002-07-25 | 2003-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-23 | 2006-07-25 | 2007-01-24 | $7700.00 | Window Closed / Lapsed |