BE775993A - Traducteur permettant l'echange d'informations entre un reseau telephonique en modulation codee d'impulsions et un reseau en modulation differentielle - Google Patents
Traducteur permettant l'echange d'informations entre un reseau telephonique en modulation codee d'impulsions et un reseau en modulation differentielleInfo
- Publication number
- BE775993A BE775993A BE775993A BE775993A BE775993A BE 775993 A BE775993 A BE 775993A BE 775993 A BE775993 A BE 775993A BE 775993 A BE775993 A BE 775993A BE 775993 A BE775993 A BE 775993A
- Authority
- BE
- Belgium
- Prior art keywords
- network
- modulation
- translator
- exchange
- allowing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3048—Conversion to or from one-bit differential modulation only, e.g. delta modulation [DM]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Time-Division Multiplex Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7042943A FR2115686A5 (fr) | 1970-11-30 | 1970-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE775993A true BE775993A (fr) | 1972-05-30 |
Family
ID=9064919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE775993A BE775993A (fr) | 1970-11-30 | 1971-11-30 | Traducteur permettant l'echange d'informations entre un reseau telephonique en modulation codee d'impulsions et un reseau en modulation differentielle |
Country Status (7)
Country | Link |
---|---|
US (1) | US3750144A (fr) |
BE (1) | BE775993A (fr) |
CA (1) | CA961578A (fr) |
CH (1) | CH557621A (fr) |
DE (1) | DE2158549A1 (fr) |
FR (1) | FR2115686A5 (fr) |
GB (1) | GB1321346A (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3916107A (en) * | 1972-10-06 | 1975-10-28 | Bell Telephone Labor Inc | Digital system for reclocking pulse code modulation circuits |
DE2264179C3 (de) * | 1972-12-29 | 1975-10-09 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Digitales Zeitmultiptexvermittlungsverfahren für Pulscodemodulation und Pulsdeltamodulation |
US4035724A (en) * | 1974-05-08 | 1977-07-12 | Universite De Sherbrooke | Digital converter from continuous variable slope delta modulation to pulse code modulation |
CA1068822A (fr) * | 1974-06-24 | 1979-12-25 | Ching-Long Song | Convertisseur numerique-analogique pour systeme de communication |
US3937897A (en) * | 1974-07-25 | 1976-02-10 | North Electric Company | Signal coding for telephone communication system |
US4044306A (en) * | 1974-07-26 | 1977-08-23 | Universite De Snerbrooke | Digital converter from pulse code modulation to continuous variable slope delta modulation |
US4057797A (en) * | 1975-12-03 | 1977-11-08 | Stromberg-Carlson Corporation | All digital delta to PCM converter |
US4128832A (en) * | 1976-01-08 | 1978-12-05 | Ncr Corporation | Combined encoder/decoder |
US4924480A (en) * | 1988-03-11 | 1990-05-08 | American Telephone And Telegraph Company | Codecs with suppression of multiple encoding/decodings across a connection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL300482A (fr) * | 1962-11-13 | |||
US3588364A (en) * | 1967-06-19 | 1971-06-28 | Nat Defense Canada | Adaptive encoder and decoder |
US3526855A (en) * | 1968-03-18 | 1970-09-01 | Bell Telephone Labor Inc | Pulse code modulation and differential pulse code modulation encoders |
BE758268A (fr) * | 1969-11-04 | 1971-04-01 | Ibm | Procede et systeme de codage comprime de quantites sous forme digitale |
-
1970
- 1970-11-30 FR FR7042943A patent/FR2115686A5/fr not_active Expired
-
1971
- 1971-11-25 GB GB5478171A patent/GB1321346A/en not_active Expired
- 1971-11-25 DE DE19712158549 patent/DE2158549A1/de active Pending
- 1971-11-26 CH CH1721871A patent/CH557621A/fr not_active IP Right Cessation
- 1971-11-26 US US00202476A patent/US3750144A/en not_active Expired - Lifetime
- 1971-11-29 CA CA128,849A patent/CA961578A/en not_active Expired
- 1971-11-30 BE BE775993A patent/BE775993A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
CH557621A (fr) | 1974-12-31 |
CA961578A (en) | 1975-01-21 |
AU3303671A (en) | 1973-03-08 |
DE2158549A1 (de) | 1972-05-31 |
US3750144A (en) | 1973-07-31 |
FR2115686A5 (fr) | 1972-07-07 |
GB1321346A (en) | 1973-06-27 |
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