JPS55120295A - Pcm*pam converter circuit having signal level change of pcm portion circuit - Google Patents

Pcm*pam converter circuit having signal level change of pcm portion circuit

Info

Publication number
JPS55120295A
JPS55120295A JP2288380A JP2288380A JPS55120295A JP S55120295 A JPS55120295 A JP S55120295A JP 2288380 A JP2288380 A JP 2288380A JP 2288380 A JP2288380 A JP 2288380A JP S55120295 A JPS55120295 A JP S55120295A
Authority
JP
Japan
Prior art keywords
pcm
circuit
signal level
level change
converter circuit
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.)
Pending
Application number
JP2288380A
Other languages
English (en)
Japanese (ja)
Inventor
Oogasuto Muntaa Aansuto
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 Ltd
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
Publication of JPS55120295A publication Critical patent/JPS55120295A/ja
Pending 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)
  • Time-Division Multiplex Systems (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2288380A 1979-02-27 1980-02-27 Pcm*pam converter circuit having signal level change of pcm portion circuit Pending JPS55120295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000322373A CA1152650A (en) 1979-02-27 1979-02-27 Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit

Publications (1)

Publication Number Publication Date
JPS55120295A true JPS55120295A (en) 1980-09-16

Family

ID=4113638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2288380A Pending JPS55120295A (en) 1979-02-27 1980-02-27 Pcm*pam converter circuit having signal level change of pcm portion circuit

Country Status (8)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396189A (ja) * 1989-09-08 1991-04-22 Nitsuko Corp デジタル交換機

Families Citing this family (1)

* 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (4)

* 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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396189A (ja) * 1989-09-08 1991-04-22 Nitsuko Corp デジタル交換機

Also Published As

Publication number Publication date
FR2450533A1 (fr) 1980-09-26
DE3007211A1 (de) 1980-09-04
ATA108180A (de) 1989-11-15
GB2050112A (en) 1980-12-31
ES8104683A1 (es) 1981-04-16
SE8001498L (sv) 1980-08-28
FR2450533B1 (enrdf_load_stackoverflow) 1984-04-06
GB2050112B (en) 1983-05-25
AT390703B (de) 1990-06-25
SE439713B (sv) 1985-06-24
ES488946A0 (es) 1981-04-16
CA1152650A (en) 1983-08-23

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