FR2481024B1 - Circuit predicteur adaptatif utilisant un filtre en treillis et dispositif de codage ou de decodage mic differentiel correspondant - Google Patents
Circuit predicteur adaptatif utilisant un filtre en treillis et dispositif de codage ou de decodage mic differentiel correspondantInfo
- Publication number
- FR2481024B1 FR2481024B1 FR8008883A FR8008883A FR2481024B1 FR 2481024 B1 FR2481024 B1 FR 2481024B1 FR 8008883 A FR8008883 A FR 8008883A FR 8008883 A FR8008883 A FR 8008883A FR 2481024 B1 FR2481024 B1 FR 2481024B1
- Authority
- FR
- France
- Prior art keywords
- predicator
- adaptive
- circuit
- decoding device
- mesh filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
- H03H21/0014—Lattice filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
- H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8008883A FR2481024B1 (fr) | 1980-04-21 | 1980-04-21 | Circuit predicteur adaptatif utilisant un filtre en treillis et dispositif de codage ou de decodage mic differentiel correspondant |
US06/253,154 US4389726A (en) | 1980-04-21 | 1981-04-10 | Adaptive predicting circuit using a lattice filter and a corresponding differential PCM coding or decoding apparatus |
GB8111686A GB2076239B (en) | 1980-04-21 | 1981-04-13 | Adaptive predicting circuit using a lattice filter and a corresponding differential pcm coding or decoding apparatus |
JP5965081A JPS56166632A (en) | 1980-04-21 | 1981-04-20 | Adaptive predicting circuit using differential pcm coding or decoding unit corresponding to lattice filter |
DE3115884A DE3115884A1 (de) | 1980-04-21 | 1981-04-21 | Adaptive vorhersageschaltung sowie diese verwendender codierer oder decodierer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8008883A FR2481024B1 (fr) | 1980-04-21 | 1980-04-21 | Circuit predicteur adaptatif utilisant un filtre en treillis et dispositif de codage ou de decodage mic differentiel correspondant |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2481024A1 FR2481024A1 (fr) | 1981-10-23 |
FR2481024B1 true FR2481024B1 (fr) | 1986-07-11 |
Family
ID=9241151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8008883A Expired FR2481024B1 (fr) | 1980-04-21 | 1980-04-21 | Circuit predicteur adaptatif utilisant un filtre en treillis et dispositif de codage ou de decodage mic differentiel correspondant |
Country Status (5)
Country | Link |
---|---|
US (1) | US4389726A (fr) |
JP (1) | JPS56166632A (fr) |
DE (1) | DE3115884A1 (fr) |
FR (1) | FR2481024B1 (fr) |
GB (1) | GB2076239B (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751673A (en) * | 1982-03-22 | 1988-06-14 | The Babcock & Wilcox Company | System for direct comparison and selective transmission of a plurality of discrete incoming data |
JPS58215822A (ja) * | 1982-06-10 | 1983-12-15 | Toshiba Corp | 音声信号の予測符号化装置 |
CA1220867A (fr) * | 1983-07-18 | 1987-04-21 | Northern Telecom Limited | Systeme de mic differentielle adaptative a adaptation guidee par residus du predicteur a retro-action |
US6028929A (en) | 1997-11-14 | 2000-02-22 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having improved non-linear echo path detection |
JP2001257565A (ja) * | 2000-03-10 | 2001-09-21 | Fujitsu Ltd | ラティス型フィルタの反射係数の更新方法及び、装置 |
FR2961980A1 (fr) * | 2010-06-24 | 2011-12-30 | France Telecom | Controle d'une boucle de retroaction de mise en forme de bruit dans un codeur de signal audionumerique |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3502986A (en) * | 1967-12-14 | 1970-03-24 | Bell Telephone Labor Inc | Adaptive prediction for redundancy removal in data transmission systems |
DE2260264C3 (de) * | 1972-12-08 | 1975-06-05 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren und Anordnung zur Schätzwertbildung in einem Codierer für Differenz-Pulscodemodulation |
CA1091810A (fr) * | 1976-12-16 | 1980-12-16 | Toshio Koga | Codeur de prevision capable de choisir un signal parmi au moins trois signaux de prevision en deux etapes |
-
1980
- 1980-04-21 FR FR8008883A patent/FR2481024B1/fr not_active Expired
-
1981
- 1981-04-10 US US06/253,154 patent/US4389726A/en not_active Expired - Lifetime
- 1981-04-13 GB GB8111686A patent/GB2076239B/en not_active Expired
- 1981-04-20 JP JP5965081A patent/JPS56166632A/ja active Granted
- 1981-04-21 DE DE3115884A patent/DE3115884A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
US4389726A (en) | 1983-06-21 |
GB2076239A (en) | 1981-11-25 |
DE3115884C2 (fr) | 1989-06-01 |
DE3115884A1 (de) | 1982-03-18 |
JPH0126207B2 (fr) | 1989-05-23 |
JPS56166632A (en) | 1981-12-21 |
GB2076239B (en) | 1983-09-21 |
FR2481024A1 (fr) | 1981-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |