FR2423016A1 - DATA COMMUNICATION METHOD AND APPARATUS - Google Patents
DATA COMMUNICATION METHOD AND APPARATUSInfo
- Publication number
- FR2423016A1 FR2423016A1 FR7901199A FR7901199A FR2423016A1 FR 2423016 A1 FR2423016 A1 FR 2423016A1 FR 7901199 A FR7901199 A FR 7901199A FR 7901199 A FR7901199 A FR 7901199A FR 2423016 A1 FR2423016 A1 FR 2423016A1
- Authority
- FR
- France
- Prior art keywords
- value
- data communication
- logic
- communication method
- transmitted
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
- H04L25/4923—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes
- H04L25/4925—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes using balanced bipolar ternary codes
Abstract
Deux valeurs logiques d'un code de valeur 3 correspondent à << 1 >> et << 0 >> d'un code binaire. Quand la même valeur logique binaire arrive dans des digits successifs d'une information à transmettre, la valeur logique de valeur 3 correspondante et une troisième valeur logique sont transmises alternativement. Quand la valeur logique binaire différente arrive dans l'information de façon alternative, les valeurs logiques correspondantes de valeur 3 sont transmises alternativement.Two logical values of a value code 3 correspond to "1" and "0" of a binary code. When the same binary logic value arrives in successive digits of an item of information to be transmitted, the logic value of corresponding value 3 and a third logic value are transmitted alternately. When the different binary logic value arrives in the information alternately, the corresponding logic values of value 3 are transmitted alternately.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53004357A JPS5831136B2 (en) | 1978-01-20 | 1978-01-20 | Digital signal transmission method |
JP14237678A JPS5568761A (en) | 1978-11-20 | 1978-11-20 | Digital signal transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2423016A1 true FR2423016A1 (en) | 1979-11-09 |
FR2423016B1 FR2423016B1 (en) | 1983-04-29 |
Family
ID=26338106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7901199A Granted FR2423016A1 (en) | 1978-01-20 | 1979-01-18 | DATA COMMUNICATION METHOD AND APPARATUS |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2902133C3 (en) |
FR (1) | FR2423016A1 (en) |
GB (1) | GB2014401B (en) |
SE (1) | SE7813424L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2109202A (en) * | 1981-11-02 | 1983-05-25 | Philips Electronic Associated | Code generator |
GB2183971B (en) * | 1985-12-05 | 1989-10-04 | Stc Plc | Data transmission system |
US7221711B2 (en) | 2002-03-27 | 2007-05-22 | Woodworth John R | Multilevel data encoding and modulation technique |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2759047A (en) * | 1950-12-27 | 1956-08-14 | Bell Telephone Labor Inc | Pulse transmission system and regenerative repeater therefor |
GB830848A (en) * | 1956-11-05 | 1960-03-23 | Standard Telephones Cables Ltd | Improvements relating to transmission or storage systems employing information in binary code form |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3502810A (en) * | 1966-08-15 | 1970-03-24 | Bell Telephone Labor Inc | Bipolar pulse transmission system with self-derived timing and drift compensation |
GB1250494A (en) * | 1967-07-27 | 1971-10-20 | ||
US3863025A (en) * | 1973-04-25 | 1975-01-28 | Gte Automatic Electric Lab Inc | Data transmission method |
-
1978
- 1978-12-29 SE SE7813424A patent/SE7813424L/en unknown
-
1979
- 1979-01-17 GB GB7901720A patent/GB2014401B/en not_active Expired
- 1979-01-18 FR FR7901199A patent/FR2423016A1/en active Granted
- 1979-01-19 DE DE2902133A patent/DE2902133C3/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2759047A (en) * | 1950-12-27 | 1956-08-14 | Bell Telephone Labor Inc | Pulse transmission system and regenerative repeater therefor |
GB830848A (en) * | 1956-11-05 | 1960-03-23 | Standard Telephones Cables Ltd | Improvements relating to transmission or storage systems employing information in binary code form |
Also Published As
Publication number | Publication date |
---|---|
GB2014401B (en) | 1982-03-31 |
FR2423016B1 (en) | 1983-04-29 |
DE2902133B2 (en) | 1980-10-02 |
DE2902133A1 (en) | 1979-07-26 |
SE7813424L (en) | 1979-07-21 |
DE2902133C3 (en) | 1981-07-30 |
GB2014401A (en) | 1979-08-22 |
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