FR2374779A1 - Procede de modulation delta - Google Patents
Procede de modulation deltaInfo
- Publication number
- FR2374779A1 FR2374779A1 FR7737633A FR7737633A FR2374779A1 FR 2374779 A1 FR2374779 A1 FR 2374779A1 FR 7737633 A FR7737633 A FR 7737633A FR 7737633 A FR7737633 A FR 7737633A FR 2374779 A1 FR2374779 A1 FR 2374779A1
- Authority
- FR
- France
- Prior art keywords
- delta modulation
- stage
- signal
- input
- modulation process
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000013139 quantization Methods 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
- H04B14/062—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM]
- H04B14/064—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM] with adaptive feedback
Landscapes
- Engineering & Computer Science (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)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
L'invention concerne un procédé de modulation delta. Le système de l'invention comprend un étage de différence Di à une entrée duquel est acheminé, via une ligne L1, le signal d'information modulé v d'un émetteur. Le signal d'évaluation r est appliqué à l'autre entrée de l'étage Di et le signal d'erreur ou de di férence e = v - r apparaissant à la sortie de cet étage Di est émis vers le commutateur à valeur seuil S. La hauteur des étages de quantification est réglée en fonction de l'amplitude de la raie spectrale de la fréquence de répétition de symboles (fs ) du signal d'information. L'invention est utilisée pour la transmission de signaux d'informations modulés en adoptant une modulation delta adaptable.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2656975A DE2656975C3 (de) | 1976-12-16 | 1976-12-16 | Verfahren zur Übertragung von modulierten Datensignalen mittels adaptiver Deltamodulation |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2374779A1 true FR2374779A1 (fr) | 1978-07-13 |
FR2374779B1 FR2374779B1 (fr) | 1983-03-04 |
Family
ID=5995673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7737633A Granted FR2374779A1 (fr) | 1976-12-16 | 1977-12-14 | Procede de modulation delta |
Country Status (9)
Country | Link |
---|---|
US (1) | US4215311A (fr) |
JP (1) | JPS5394758A (fr) |
AT (1) | AT356711B (fr) |
CH (1) | CH626204A5 (fr) |
DE (1) | DE2656975C3 (fr) |
FR (1) | FR2374779A1 (fr) |
GB (1) | GB1567283A (fr) |
IE (1) | IE45851B1 (fr) |
SE (1) | SE418133B (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2906886C2 (de) * | 1979-02-22 | 1982-03-25 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Schaltungsanordnung zur Schrittakt-Gewinnung |
JPS55135421A (en) * | 1979-04-09 | 1980-10-22 | Nippon Telegr & Teleph Corp <Ntt> | Adaptive prediction coding system |
DE3002960A1 (de) * | 1980-01-29 | 1981-09-10 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Adaptiver deltamodulator |
US4352191A (en) * | 1980-05-19 | 1982-09-28 | Un Chong K | Hybrid companding delta modulation system |
US4411002A (en) * | 1981-09-29 | 1983-10-18 | Magnavox Government And Industrial Electronics Company | Method and apparatus for a continuously variable slope delta range extender |
GB2128825A (en) * | 1982-10-20 | 1984-05-02 | Dbx | Analog to digital and digital to analog converter |
US4709375A (en) * | 1983-09-27 | 1987-11-24 | Robinton Products, Inc. | Digital phase selection system for signal multipliers |
DE3448184C2 (fr) * | 1983-08-01 | 1989-11-23 | Robinton Products, Inc., Sunnyvale, Calif., Us | |
US4583234A (en) * | 1983-08-15 | 1986-04-15 | Rockwell International Corporation | Decision feedback equalizing apparatus |
US4700362A (en) * | 1983-10-07 | 1987-10-13 | Dolby Laboratories Licensing Corporation | A-D encoder and D-A decoder system |
JPS60106230A (ja) * | 1983-10-07 | 1985-06-11 | ドルビ−・ラボラトリ−ズ・ライセンシング・コ−ポレ−シヨン | A−dエンコ−ダおよびd−aデコ−ダシステム |
US4856025A (en) * | 1985-12-26 | 1989-08-08 | Matsushita Electric Industrial Co., Ltd. | Method of digital signal transmission |
US6486810B1 (en) * | 2001-01-16 | 2002-11-26 | 3Com Corporation | Method and apparatus for continuously variable slope delta modulation coding of signals |
US6700520B1 (en) * | 2002-09-16 | 2004-03-02 | Motorola, Inc. | Multi-bit continuous time sigma-delta ADC |
JP2005135342A (ja) * | 2003-10-31 | 2005-05-26 | Sanyo Electric Co Ltd | 可変ゲイン積分器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1207436B (de) * | 1964-06-03 | 1965-12-23 | Standard Elektrik Lorenz Ag | Nichtlineares Codier- bzw. Decodier-System |
GB1208774A (en) * | 1967-02-10 | 1970-10-14 | Mini Of Technology | Improvements in or relating to delta-modulation telecommunications apparatus |
US3806806A (en) * | 1972-11-20 | 1974-04-23 | Bell Telephone Labor Inc | Adaptive data modulator |
US3896399A (en) * | 1973-07-19 | 1975-07-22 | Motorola Inc | Loop filter for delta modulator |
DE2355676C3 (de) * | 1973-11-07 | 1979-01-18 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Übertragung von Signalen mit Differenz-Pulscodemodulation (DPCM) |
US4123709A (en) * | 1977-01-24 | 1978-10-31 | Canadian Patents And Development Limited | Adaptive digital delta modulation for voice transmission |
-
1976
- 1976-12-16 DE DE2656975A patent/DE2656975C3/de not_active Expired
-
1977
- 1977-12-06 SE SE7713820A patent/SE418133B/sv unknown
- 1977-12-08 GB GB51189/77A patent/GB1567283A/en not_active Expired
- 1977-12-08 US US05/858,819 patent/US4215311A/en not_active Expired - Lifetime
- 1977-12-12 AT AT885477A patent/AT356711B/de not_active IP Right Cessation
- 1977-12-14 FR FR7737633A patent/FR2374779A1/fr active Granted
- 1977-12-14 IE IE2545/77A patent/IE45851B1/en unknown
- 1977-12-15 CH CH1545877A patent/CH626204A5/de not_active IP Right Cessation
- 1977-12-16 JP JP15229677A patent/JPS5394758A/ja active Pending
Non-Patent Citations (1)
Title |
---|
EXBK/72 * |
Also Published As
Publication number | Publication date |
---|---|
ATA885477A (de) | 1979-10-15 |
AT356711B (de) | 1980-05-27 |
JPS5394758A (en) | 1978-08-19 |
IE45851B1 (en) | 1982-12-15 |
CH626204A5 (fr) | 1981-10-30 |
US4215311A (en) | 1980-07-29 |
FR2374779B1 (fr) | 1983-03-04 |
DE2656975C3 (de) | 1979-09-27 |
DE2656975A1 (de) | 1978-06-22 |
DE2656975B2 (de) | 1979-02-01 |
GB1567283A (en) | 1980-05-14 |
SE7713820L (sv) | 1978-06-17 |
IE45851L (en) | 1978-06-16 |
SE418133B (sv) | 1981-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |