GB2050112B - Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit - Google Patents

Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit

Info

Publication number
GB2050112B
GB2050112B GB8004799A GB8004799A GB2050112B GB 2050112 B GB2050112 B GB 2050112B GB 8004799 A GB8004799 A GB 8004799A GB 8004799 A GB8004799 A GB 8004799A GB 2050112 B GB2050112 B GB 2050112B
Authority
GB
United Kingdom
Prior art keywords
pcm
signal level
including signal
level variation
conversion 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.)
Expired
Application number
GB8004799A
Other versions
GB2050112A (en
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 GB2050112A publication Critical patent/GB2050112A/en
Application granted granted Critical
Publication of GB2050112B publication Critical patent/GB2050112B/en
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)
  • Compression, Expansion, Code Conversion, And Decoders (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)
GB8004799A 1979-02-27 1980-02-13 Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit Expired GB2050112B (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 (2)

Publication Number Publication Date
GB2050112A GB2050112A (en) 1980-12-31
GB2050112B true GB2050112B (en) 1983-05-25

Family

ID=4113638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8004799A Expired GB2050112B (en) 1979-02-27 1980-02-13 Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit

Country Status (8)

Country Link
JP (1) JPS55120295A (en)
AT (1) AT390703B (en)
CA (1) CA1152650A (en)
DE (1) DE3007211A1 (en)
ES (1) ES8104683A1 (en)
FR (1) FR2450533A1 (en)
GB (1) GB2050112B (en)
SE (1) SE439713B (en)

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 (en) * 1989-09-08 1991-04-22 Nitsuko Corp Digital exchange

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333299C3 (en) * 1973-06-29 1979-04-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for converting analog signals into PCM signals and from PCM signals into analog signals
IT998230B (en) * 1973-07-12 1976-01-20 Sits Soc It Telecom Siemens CODECODER FOR TIME DIVISION TELEPHONE SYSTEMS
US3877028A (en) * 1974-02-22 1975-04-08 Gte Automatic Electric Lab Inc Pcm encoder-decoder apparatus
IT1021020B (en) * 1974-05-27 1978-01-30 Telettra Lab Telefon COMMUNICATION SYSTEM AND DEVICES WITH CODED SIGNALS P.C.M. WITH REDUCED REDUNDANCY
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
ATA108180A (en) 1989-11-15
CA1152650A (en) 1983-08-23
SE439713B (en) 1985-06-24
JPS55120295A (en) 1980-09-16
GB2050112A (en) 1980-12-31
SE8001498L (en) 1980-08-28
FR2450533A1 (en) 1980-09-26
ES488946A0 (en) 1981-04-16
FR2450533B1 (en) 1984-04-06
AT390703B (en) 1990-06-25
ES8104683A1 (en) 1981-04-16
DE3007211A1 (en) 1980-09-04

Similar Documents

Publication Publication Date Title
GB2013351B (en) Signal comparator and indicator circuit
JPS57193121A (en) Pcmsignal-to-analog signal converter
JPS55134898A (en) Digital waveform gneration circuit
GB2044040B (en) Pcm tone signal generator
JPS53123615A (en) Signal converter
JPS5329646A (en) Digitalltooanalog signal converter
GB2037527B (en) Signal mixign circuits
JPS55159271A (en) Signal integration circuit
JPS54111739A (en) Aperiodic signal amplifying circuit
JPS5620334A (en) Voltage level converter circuit
GB2060301B (en) Signal converting circuits
JPS55158793A (en) Signal converter circuit
JPS5554457A (en) Commutationntype signal level converter
GB2067860B (en) Signal converter circuit
GB2062390B (en) Signal converting circuits
GB2050112B (en) Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit
JPS5513495A (en) Drawing figure signal and signal generator
AU5786380A (en) Analogue signal converter
JPS54132160A (en) Signal converter
NZ191332A (en) Variable level signal converter or amplifier
GB2020935B (en) Signal level detector and comparator circuit
AU551531B2 (en) Multi-tone signal generator
JPS54122907A (en) Contraction dial and circuit
JPS55157098A (en) Resistanceeelectric signal conversion circuit
JPS54150940A (en) Seriallparallel signal converter

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20000212