CA1068408A - Circuit and method for digitally measuring signal levels, of pcm encoded signals - Google Patents

Circuit and method for digitally measuring signal levels, of pcm encoded signals

Info

Publication number
CA1068408A
CA1068408A CA273,147A CA273147A CA1068408A CA 1068408 A CA1068408 A CA 1068408A CA 273147 A CA273147 A CA 273147A CA 1068408 A CA1068408 A CA 1068408A
Authority
CA
Canada
Prior art keywords
signal
samples
circuit
power
output signal
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
CA273,147A
Other languages
English (en)
French (fr)
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 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
Priority to CA273,147A priority Critical patent/CA1068408A/en
Priority to NLAANVRAGE7801094,A priority patent/NL190462C/xx
Priority to GB4700/78A priority patent/GB1572582A/en
Priority to SE7802261A priority patent/SE435666B/sv
Priority to DE19782808849 priority patent/DE2808849A1/de
Priority to JP53022177A priority patent/JPS6052379B2/ja
Priority to FR7805991A priority patent/FR2382807A1/fr
Application granted granted Critical
Publication of CA1068408A publication Critical patent/CA1068408A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
CA273,147A 1977-03-03 1977-03-03 Circuit and method for digitally measuring signal levels, of pcm encoded signals Expired CA1068408A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA273,147A CA1068408A (en) 1977-03-03 1977-03-03 Circuit and method for digitally measuring signal levels, of pcm encoded signals
NLAANVRAGE7801094,A NL190462C (nl) 1977-03-03 1978-01-31 Digitale schakeling voor het meten van een PCM-signaalniveau.
GB4700/78A GB1572582A (en) 1977-03-03 1978-02-06 Circuit and method for digitally measuring signal level of pcm encoded signals
SE7802261A SE435666B (sv) 1977-03-03 1978-02-28 Krets och sett for digital metning av signalnivaer hos pcm-kodade signaler
DE19782808849 DE2808849A1 (de) 1977-03-03 1978-03-01 Verfahren und vorrichtung zur digitalen messung von signalpegeln von pcm-kodierten signalen
JP53022177A JPS6052379B2 (ja) 1977-03-03 1978-03-01 Ｐｃｍ符号化信号の信号レベルをデイジタル的に測定するための回路及び方法
FR7805991A FR2382807A1 (fr) 1977-03-03 1978-03-02 Circuit et procede de mesure numerique des niveaux de signaux codes mic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA273,147A CA1068408A (en) 1977-03-03 1977-03-03 Circuit and method for digitally measuring signal levels, of pcm encoded signals

Publications (1)

Publication Number Publication Date
CA1068408A true CA1068408A (en) 1979-12-18

Family

ID=4108070

Family Applications (1)

Application Number Title Priority Date Filing Date
CA273,147A Expired CA1068408A (en) 1977-03-03 1977-03-03 Circuit and method for digitally measuring signal levels, of pcm encoded signals

Country Status (7)

Country Link
JP (1) JPS6052379B2 (enrdf_load_stackoverflow)
CA (1) CA1068408A (enrdf_load_stackoverflow)
DE (1) DE2808849A1 (enrdf_load_stackoverflow)
FR (1) FR2382807A1 (enrdf_load_stackoverflow)
GB (1) GB1572582A (enrdf_load_stackoverflow)
NL (1) NL190462C (enrdf_load_stackoverflow)
SE (1) SE435666B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593924B1 (fr) * 1986-01-24 1988-04-08 Cit Alcatel Procede et dispositif de mesure de la puissance efficace apres filtrage passe-haut d'un signal echantillonne
EP0542976A4 (en) * 1991-06-07 1993-08-11 Australian And Overseas Telecommunications Corporation Limited Pcm monitor
AU644301B2 (en) * 1991-06-07 1993-12-02 Telstra Corporation Limited PCM monitor
US6693967B1 (en) 2000-03-16 2004-02-17 Agere Systems Inc. Detecting encoding and encoding conversion for modem connections

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057972A (en) * 1959-12-23 1962-10-09 Bell Telephone Labor Inc Testing the performance of pcm receivers
CH495094A (de) * 1968-08-12 1970-08-15 Standard Telephon & Radio Ag Verfahren zur Überwachung der Arbeitsweise von Coder- und Decoderschaltungen in einer PCM-Zeitmultiplex-Anlage
CH545560A (enrdf_load_stackoverflow) * 1971-05-06 1974-01-31
JPS5236406B2 (enrdf_load_stackoverflow) * 1972-01-17 1977-09-16

Also Published As

Publication number Publication date
SE435666B (sv) 1984-10-08
DE2808849A1 (de) 1978-09-07
GB1572582A (en) 1980-07-30
FR2382807A1 (fr) 1978-09-29
SE7802261L (sv) 1978-09-04
DE2808849C2 (enrdf_load_stackoverflow) 1988-03-31
NL190462C (nl) 1994-03-01
FR2382807B3 (enrdf_load_stackoverflow) 1980-12-05
NL190462B (nl) 1993-10-01
NL7801094A (nl) 1978-09-05
JPS6052379B2 (ja) 1985-11-19
JPS53109677A (en) 1978-09-25

Similar Documents

Publication Publication Date Title
US4185172A (en) Method of and means for detecting digitized multi frequency-coded signals
US4191858A (en) Block digital processing system for nonuniformly encoded digital words
CA1068408A (en) Circuit and method for digitally measuring signal levels, of pcm encoded signals
CA1287376C (en) Processor based linked compressor-expander telecommunications system
GB2049360A (en) Digital signal processing system
US4103108A (en) Circuit and method for digitally measuring signal levels of pcm encoded signals
US5610943A (en) Signal processing apparatus
WO1980000207A1 (en) Predictive differential pulse-code modulation apparatus
JPS5942502B2 (ja) デジタル式電話回線用の利得制御装置
US4062014A (en) Natural binary to logarithmic binary conversion device with means for range selection
JP2598142B2 (ja) 信号変換装置および信号変換方法
GB2203012A (en) Differential pulse code modulation
US3891805A (en) Digital signal detection in telephonic communication systems
US6078620A (en) Method and apparatus for performing adaptive differential pulse code modulation
IE50947B1 (en) A system for measuring the attenuation on a transmission path
JP3198224B2 (ja) 通話回線のエコー測定装置
US5093724A (en) Semiconductor device containing video signal processing circuit
JP3468196B2 (ja) 音声回線試験装置と音声回線試験回路
JPS62128650A (ja) デイジタル電話機測定装置
SU1053308A1 (ru) Способ измерени характеристики квантовани приемника сигналов с импульсно-кодовой модул цией
JPS6017184B2 (ja) 予測符号化帯域圧縮装置
KR930006546B1 (ko) 디지틀 신호처리기를 이용한 다중채널 r2mfc/dtmf/cct 겸용 수신방법
Wolters Enhancement of differentially coded speech signals by means of quantization error correction
EP0528650B1 (en) Circuit for digitally adding loss to a signal
JPH0646105A (ja) デジタル信号の擾乱付加装置