CA1152650A - Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit - Google Patents

Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit

Info

Publication number
CA1152650A
CA1152650A CA000322373A CA322373A CA1152650A CA 1152650 A CA1152650 A CA 1152650A CA 000322373 A CA000322373 A CA 000322373A CA 322373 A CA322373 A CA 322373A CA 1152650 A CA1152650 A CA 1152650A
Authority
CA
Canada
Prior art keywords
digital
converter
signals
pcm
code
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
Application number
CA000322373A
Other languages
English (en)
Inventor
Ernst A. Munter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Corp
Original Assignee
Northern Telecom Ltd
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.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000322373A priority Critical patent/CA1152650A/fr
Priority to GB8004799A priority patent/GB2050112B/en
Priority to DE19803007211 priority patent/DE3007211A1/de
Priority to FR8004189A priority patent/FR2450533A1/fr
Priority to ES488946A priority patent/ES488946A0/es
Priority to SE8001498A priority patent/SE439713B/sv
Priority to AT108180A priority patent/AT390703B/de
Priority to JP2288380A priority patent/JPS55120295A/ja
Application granted granted Critical
Publication of CA1152650A publication Critical patent/CA1152650A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
    • H03M1/129—Means for adapting the input signal to the range the converter can handle, e.g. limiting, pre-scaling ; Out-of-range indication
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K11/00—Transforming types of modulations, e.g. position-modulated pulses into duration-modulated pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Analogue/Digital Conversion (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CA000322373A 1979-02-27 1979-02-27 Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit Expired CA1152650A (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CA000322373A CA1152650A (fr) 1979-02-27 1979-02-27 Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit
GB8004799A GB2050112B (en) 1979-02-27 1980-02-13 Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit
DE19803007211 DE3007211A1 (de) 1979-02-27 1980-02-26 Pcm/pam-wandlerschaltung mit signalniveauveraenderung im pcm-abschnitt der schaltung
FR8004189A FR2450533A1 (fr) 1979-02-27 1980-02-26 Circuit de conversion de signaux a modulation par impulsions codees et de signaux a modulation d'impulsion en amplitude pour equipement de commutation telephonique numerique
ES488946A ES488946A0 (es) 1979-02-27 1980-02-26 Perfeccionamientos en circuitos de conversion para interfa- sar senales digitales y de modulacion de amplitud de impul- sos (pam) y para modificar de una forma selectiva la senal digital
SE8001498A SE439713B (sv) 1979-02-27 1980-02-26 Omvandlarkrets vid ett digitalt telefonomkopplarnet for omvandling av pulsamplitudmodulerade signaler till pulskodmodulerade signaler och vice versa
AT108180A AT390703B (de) 1979-02-27 1980-02-27 Wandlerschaltung zur zwischenschaltung zwischen digitalen und pulsamplitudenmodulierten signalen und zur wahlweisen modifizierung der digitalen signale
JP2288380A JPS55120295A (en) 1979-02-27 1980-02-27 Pcm*pam converter circuit having signal level change of pcm portion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000322373A CA1152650A (fr) 1979-02-27 1979-02-27 Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit

Publications (1)

Publication Number Publication Date
CA1152650A true CA1152650A (fr) 1983-08-23

Family

ID=4113638

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000322373A Expired CA1152650A (fr) 1979-02-27 1979-02-27 Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit

Country Status (8)

Country Link
JP (1) JPS55120295A (fr)
AT (1) AT390703B (fr)
CA (1) CA1152650A (fr)
DE (1) DE3007211A1 (fr)
ES (1) ES488946A0 (fr)
FR (1) FR2450533A1 (fr)
GB (1) GB2050112B (fr)
SE (1) SE439713B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396938A (en) * 1981-07-23 1983-08-02 Rca Corporation Controlled ram signal processor
JPH0396189A (ja) * 1989-09-08 1991-04-22 Nitsuko Corp デジタル交換機

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333299C3 (de) * 1973-06-29 1979-04-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Umsetzung von Analog-Signalen in PCM-Signale und von PCM-Signalen in Analog-Signale
IT998230B (it) * 1973-07-12 1976-01-20 Sits Soc It Telecom Siemens Codecodificatore per sistemi telefonici a divisione di tempo
US3877028A (en) * 1974-02-22 1975-04-08 Gte Automatic Electric Lab Inc Pcm encoder-decoder apparatus
IT1021020B (it) * 1974-05-27 1978-01-30 Telettra Lab Telefon Sistema e dispositivi di comunica zione con segnali codificati p.c.m. a ridondanza ridotta
JPS53147408A (en) * 1977-05-27 1978-12-22 Fujitsu Ltd Gain control system with variable time slot
JPS549511A (en) * 1977-06-24 1979-01-24 Fujitsu Ltd Digital gain control system using read only memory

Also Published As

Publication number Publication date
SE439713B (sv) 1985-06-24
GB2050112B (en) 1983-05-25
FR2450533A1 (fr) 1980-09-26
ES8104683A1 (es) 1981-04-16
FR2450533B1 (fr) 1984-04-06
GB2050112A (en) 1980-12-31
JPS55120295A (en) 1980-09-16
ES488946A0 (es) 1981-04-16
AT390703B (de) 1990-06-25
SE8001498L (sv) 1980-08-28
ATA108180A (de) 1989-11-15
DE3007211A1 (de) 1980-09-04

Similar Documents

Publication Publication Date Title
US4195282A (en) Charge redistribution circuits
US5121349A (en) Digital noise generator
US4366469A (en) Companding analog to digital converter
US4348768A (en) PCM Codec using common D/A converter for encoding and decoding
CA2004317C (fr) Convertisseur analogique-numerique a comparaisons successives
US4367456A (en) PCM and PAM Conversion circuit including signal level variation on the PCM portion of the circuit
US4661946A (en) Digital switch module having encoding law conversion capability
EP0641084B1 (fr) Circuit convertisseur analogique-numérique-analogique
CA1152650A (fr) Circuit de conversion de signaux mia en signaux mic avec variation du niveau du signal dans la partie mic du circuit
US4008373A (en) Digital differential phase shift keyed modulator
US3710377A (en) High speed an analog-to-digital converter
CA1095192A (fr) Traduction non-disponible
US4143366A (en) Analog-to-digital converter
US4155070A (en) Code-converter with preservation of parity
US4231022A (en) Interpolative PCM decoder utilized for μ-law and A-law
CA2039697C (fr) Convertisseur numerique-analogique
US5008672A (en) Signal conversion apparatus which reduces quantization errors for telecommunications applications
US6055275A (en) ADPCM transcoder
US5684727A (en) High-speed correlator
US4163871A (en) Digital CVSD telephone conference circuit
US3612772A (en) Circuit for adding codes resulting from nonlinear coding
US4199729A (en) Variable peak detector
US4160878A (en) Conference circuit with digital-analog and analog-digital conversion
US4570121A (en) Video wave codec
US3315251A (en) Encoding device with non-linear quantization

Legal Events

Date Code Title Description
MKEX Expiry