BE789644A - Codeur a vitesse de transmission accrue - Google Patents

Codeur a vitesse de transmission accrue

Info

Publication number: BE789644A
Authority: BE; Belgium
Prior art keywords: encoder; transmission speed; increased transmission; increased; speed
Prior art date: 1971-10-13

Application number

Other languages

English (en)

French (fr)

Original Assignee

Cit Alcatel

Priority date (The priority date 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 date listed.)

1971-10-13

Publication date

1973-04-04

1973-04-04 Publication of BE789644A publication Critical patent/BE789644A/xx

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
- 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
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
- H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
- H04N1/4135—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which a baseband signal showing more than two values or a continuously varying baseband signal is transmitted or recorded

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Computer Networks & Wireless Communication (AREA)
Power Engineering (AREA)
Multimedia (AREA)
Dc Digital Transmission (AREA)
Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)

BE789644D 1971-10-13 Codeur a vitesse de transmission accrue BE789644A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7136797A FR2161744B1 (nl)	1971-10-13	1971-10-13

Publications (1)

Publication Number	Publication Date
BE789644A true BE789644A (fr)	1973-04-04

Family

ID=9084310

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE789644D BE789644A (fr)	1971-10-13		Codeur a vitesse de transmission accrue

Country Status (9)

Country	Link
BE (1)	BE789644A (nl)
CA (1)	CA971666A (nl)
DE (1)	DE2249819C2 (nl)
FR (1)	FR2161744B1 (nl)
GB (1)	GB1357837A (nl)
IT (1)	IT975237B (nl)
LU (1)	LU66254A1 (nl)
NL (1)	NL156288B (nl)
SE (1)	SE387498B (nl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2250898A (en) *	1990-12-12	1992-06-17	Stc Plc	Line coding scheme.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3337863A (en) *	1964-01-17	1967-08-22	Automatic Elect Lab	Polybinary techniques
US3459892A (en) *	1965-09-14	1969-08-05	Bendix Corp	Digital data transmission system wherein a binary level is represented by a change in the amplitude of the transmitted signal
GB1250494A (nl) *	1967-07-27	1971-10-20

0
- BE BE789644D patent/BE789644A/xx not_active IP Right Cessation
1971
- 1971-10-13 FR FR7136797A patent/FR2161744B1/fr not_active Expired
1972
- 1972-10-09 LU LU66254D patent/LU66254A1/xx unknown
- 1972-10-09 NL NL7213636A patent/NL156288B/nl not_active IP Right Cessation
- 1972-10-10 SE SE1305272A patent/SE387498B/xx unknown
- 1972-10-11 DE DE19722249819 patent/DE2249819C2/de not_active Expired
- 1972-10-12 IT IT7021272A patent/IT975237B/it active
- 1972-10-12 CA CA154,147A patent/CA971666A/en not_active Expired
- 1972-10-13 GB GB4734272A patent/GB1357837A/en not_active Expired

Also Published As

Publication number	Publication date
IT975237B (it)	1974-07-20
SE387498B (sv)	1976-09-06
DE2249819C2 (de)	1982-09-16
FR2161744A1 (nl)	1973-07-13
GB1357837A (en)	1974-06-26
NL7213636A (nl)	1973-04-17
CA971666A (en)	1975-07-22
NL156288B (nl)	1978-03-15
FR2161744B1 (nl)	1977-08-05
DE2249819A1 (de)	1973-04-19
LU66254A1 (nl)	1973-04-13

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Legal Events

Date	Code	Title	Description
1985-04-30	RE	Patent lapsed	Owner name: CIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT ALCAT Effective date: 19841004

Date

Code

Title

Description

1985-04-30

Patent lapsed

Owner name: CIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT ALCAT

Effective date: 19841004