Patent US5227788A successfully refreshed from Google Patents.
US5227788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for two-component signal compression
Assignee: Nokia Bell Labs
•
Filing: 1992-03-02
•
Granted: 1993-07-13
•
Expires: 2012-03-02
Abstract
Abstract A method and apparatus for compressing and expanding discrete signals is disclosed which comprises two compression methods which interact synergistically. Illustratively, a minimum-redundancy Huffman code, which partially represents a compressed signal, is used in conjunction with a uniquely decodable code which comprises two components. The first component represents its own length, the length of the second component and partially represents the compressed signal and the second component partially represents the compressed signal.
Inventors
- 👤 James D. Johnston
- 👤 James A. Reeds, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:16
CPC Classifications
H; H03; H03M; H03M7/00; H03M7/30; H03M7/40; H03M7/42; G; G06; G06T; G06T9/00; G06T9/005; G10; G10L; G10L19/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
125 words
An apparatus for generating a set of output signals based on a set of input signals, said apparatus comprising: means for forming (1) a first set of signals which partially represents said set of input signals; (2) a second set of signals which represents the number of signals in said first set of signals and which partially represents said set of input signals; and (3) a third set of signals indicating the significance of said first set of signals and said second set of signals; and means for generating said set of output signals based on said first set of signals, said second set of signals and said third set of signals such that said set of output signals represents said set of input signals.
Claim 2
Independent Claim
125 words
An apparatus for generating a set of output signals based on a set of input signals, said apparatus comprising: means for forming (1) a first set of signals which partially represents said set of input signals; (2) a second set of signals which represents the number of signals in said first set of signals and which partially represents said set of input signals; and (3) a third set of signals indicating the significance of said first set of signals and said second set of signals; and means for generating said set of output signals based on said first set of signals, said second set of signals and said third set of signals such that said set of output signals represents said set of input signals.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein said set of input signals has a polarity and said third set of signals additionally represents said polarity of said set of input signals.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said third set of signals partially represents the magnitude of said set of input signals.
Claim 5
Dependent Claim
26 words
The apparatus of claim 1 wherein said third set of signals has three signals more than the number of signals in said second set of signals.
Claim 6
Dependent Claim
38 words
The apparatus of claim 1 wherein the signals of said set of input signals, said set of output signals, said first set of signals, said second set of signals and said third set of signals are binary signals.
Claim 7
Dependent Claim
20 words
The apparatus of claim 1 wherein said second set of signals and said third set of signals are uniquely decodable.
Claim 8
Dependent Claim
39 words
The apparatus of claim 1 further comprising: means for forming a set of magnitude signals based on the absolute magnitude of said set of input signals; and means for subtracting a predetermined quantity from said set of magnitude signals.
Claim 9
Independent Claim
122 words
A method for generating a set of output signals based on a set of input signals comprising the steps of: forming (1) a first set of signals which partially represents said set of input signals; (2) a second set of signals which represents the number of signals in said first set of signals and which partially represents said set of input signals; and (3) a third set of signals indicating the significance of said first set of signals and said second set of signals; and generating said set of output signals based on said first set of signals, said second set of signals and said third set of signals such that said set of output signals represents said set of input signals.
Claim 10
Independent Claim
122 words
A method for generating a set of output signals based on a set of input signals comprising the steps of: forming (1) a first set of signals which partially represents said set of input signals; (2) a second set of signals which represents the number of signals in said first set of signals and which partially represents said set of input signals; and (3) a third set of signals indicating the significance of said first set of signals and said second set of signals; and generating said set of output signals based on said first set of signals, said second set of signals and said third set of signals such that said set of output signals represents said set of input signals.
Claim 11
Dependent Claim
30 words
The method of claim 8 wherein said set of input signals has a polarity and said third set of signals additionally represents said polarity of said set of input signals.
Claim 12
Dependent Claim
21 words
The method of claim 8 wherein said third set of signals partially represents the magnitude of said set of input signals.
Claim 13
Dependent Claim
26 words
The method of claim 8 wherein said third set of signals has three signals more than the number of signals in said second set of signals.
Claim 14
Dependent Claim
38 words
The method of claim 8 wherein the signals of said set of input signals, said set of output signals, said first set of signals, said second set of signals and said third set of signals are binary signals.
Claim 15
Dependent Claim
20 words
The method of claim 8 wherein said second set of signals and said third set of signals are uniquely decodable.
Claim 16
Dependent Claim
38 words
The method of claim 8 further comprising the steps of: forming a set of magnitude signals based on the absolute magnitude of said set of input signals; and subtracting a predetermined quantity from said set of magnitude signals.
References Cited (Backward Citations)
US4796003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |