US6031871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission and reception of a digital information signal
Assignee: US Philips Corp
•
Filing: 1997-07-03
•
Granted: 2000-02-29
•
Expires: 2017-07-03
Abstract
Abstract An apparatus for transmitting a digital information signal includes an input terminal for receiving the digital information signal, a first channel encoding unit for carrying out a first channel encoding step on an information word in a series of subsequent information words included in the digital information signal so as to obtain a channel word, a compression unit for carrying out a compression step on a channel word so as to obtain a compressed channel word, an error correction encoding unit for carrying out an error correction encoding of the compressed channel word so as to obtain a parity word, a second channel encoding unit for carrying out a second channel encoding step on the parity word so as to obtain a channel encoded parity word, and a formatting unit for combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium. With such apparatus, very long information words can be converted into channel words, while serious error propagation is avoided during transmission.
Inventors
- 👤 Kornelis A. Schouhamer Immink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:25
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0057; G; G11; G11B; G11B20/00; G11B20/00007; G11B20/10; G11B20/18; G11B20/1833; H03; H03M; H03M13/00; H04L1/0041; H04L1/0045; H04L1/0072
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
131 words
An apparatus for transmitting a digital information signal, comprising: input means for receiving the digital information signal; first channel encoding means for carrying out a first channel encoding step on an information word in a series of subsequent information words included in the digital information signal so as to form a channel word; compression means compressing a channel word to form a compressed channel word; error correction encoding means for error correction encoding the compressed channel word to form a parity word; second channel encoding means for carrying out a second channel encoding step on the parity word to form a channel encoded parity word; and formatting means for combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium.
Claim 2
Independent Claim
131 words
An apparatus for transmitting a digital information signal, comprising: input means for receiving the digital information signal; first channel encoding means for carrying out a first channel encoding step on an information word in a series of subsequent information words included in the digital information signal so as to form a channel word; compression means compressing a channel word to form a compressed channel word; error correction encoding means for error correction encoding the compressed channel word to form a parity word; second channel encoding means for carrying out a second channel encoding step on the parity word to form a channel encoded parity word; and formatting means for combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium.
Claim 3
Dependent Claim
40 words
The apparatus as claimed in claim 1, wherein the first channel encoding means includes means for converting an n-bit information word into an m-bit channel word, where n and m are positive integer values and m is larger than n.
Claim 4
Dependent Claim
40 words
The apparatus as claimed in claim 1, wherein the second channel encoding means includes means for converting r-bit parity words into s-bit channel encoded parity words, where r and s are positive integer values and s is larger than r.
Claim 5
Dependent Claim
28 words
The apparatus as claimed in claim 1, wherein the formatting means further include writing means for writing the composite transmission signal in a track on a record carrier.
Claim 6
Independent Claim
152 words
An apparatus for receiving a digital information signal, comprising: receiving means for receiving a composite transmission signal comprising channel words and corresponding channel encoded parity words; demultiplexer means for retrieving a channel word and a corresponding channel encoded parity word from the composite transmission signal; compression means for compressing the channel word to form a compressed channel word; first channel decoding means for channel decoding the channel encoded parity word to form a parity word corresponding to said compressed channel word; error correction decoding means for error correcting the compressed channel word using said parity word to form a corrected compressed channel word; expansion means for expanding the corrected compressed channel word to form an uncompressed channel word; second channel decoding means for channel decoding the uncompressed channel word to form an information word; and output means for supplying the digital information signal in the form of a sequence of information words.
Claim 7
Independent Claim
152 words
An apparatus for receiving a digital information signal, comprising: receiving means for receiving a composite transmission signal comprising channel words and corresponding channel encoded parity words; demultiplexer means for retrieving a channel word and a corresponding channel encoded parity word from the composite transmission signal; compression means for compressing the channel word to form a compressed channel word; first channel decoding means for channel decoding the channel encoded parity word to form a parity word corresponding to said compressed channel word; error correction decoding means for error correcting the compressed channel word using said parity word to form a corrected compressed channel word; expansion means for expanding the corrected compressed channel word to form an uncompressed channel word; second channel decoding means for channel decoding the uncompressed channel word to form an information word; and output means for supplying the digital information signal in the form of a sequence of information words.
Claim 8
Dependent Claim
41 words
The apparatus as claimed in claim 5, wherein the second channel decoding means includes means for converting an m-bit uncompressed channel word into an n-bit information word, where n and m are positive integer values and m is larger than n.
Claim 9
Dependent Claim
40 words
The apparatus as claimed in claim 5, wherein the first channel decoding means include means for converting s-bit channel encoded parity words into r-bit parity words, where r and s are positive integer values and s is larger than r.
Claim 10
Dependent Claim
28 words
The apparatus as claimed in claim 5, wherein the receiving means further includes reading means for reading the composite transmission signal from a track on a record carrier.
Claim 11
Dependent Claim
15 words
The apparatus as claimed in claim 1, wherein n and m are larger than 100.
Claim 12
Dependent Claim
61 words
The apparatus as claimed in claim 1, wherein the compression means includees partitioning means for partitioning an m-bit channel word into m/p subwords of p bits each; and conversion means for converting the p-bit subwords into r-bit converted subwords, the m/p converted subwords forming the compressed channel word, wherein p and r are integer values and p is larger than r.
Claim 13
Dependent Claim
43 words
The apparatus as claimed in claim 10, wherein said conversion means includes means for choosing p such that the maximum number of different p-bit subwords that can occur in the sequence of m-bit channel words is, at most, equal to 2 r .
Claim 14
Independent Claim
108 words
A method of transmitting a digital information signal, comprising the steps: receiving the digital information signal; carrying out a first channel encoding step on an information word in a series of subsequent information words comprised in the digital information signal to form a channel word; compressing said channel word to form a compressed channel word; error correction encoding the compressed channel word to form a parity word; carrying out a second channel encoding step on the parity word to form a channel encoded parity word; and combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium.
Claim 15
Independent Claim
108 words
A method of transmitting a digital information signal, comprising the steps: receiving the digital information signal; carrying out a first channel encoding step on an information word in a series of subsequent information words comprised in the digital information signal to form a channel word; compressing said channel word to form a compressed channel word; error correction encoding the compressed channel word to form a parity word; carrying out a second channel encoding step on the parity word to form a channel encoded parity word; and combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium.
Claim 16
Dependent Claim
28 words
The method as claimed in claim 12, wherein the combining step further includes the substep of writing the composite transmission signal in a track on a record carrier.
References Cited (Backward Citations)
US5335117A
Cited
US5475388A
Cited
US5671236A
Cited
US5771244A
Cited
US5499254A
Cited
US5608397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |