BE886388A - Versterkingsregelinrichting voor digitale telefoonlijnschakelingen - Google Patents

Versterkingsregelinrichting voor digitale telefoonlijnschakelingen

Info

Publication number
BE886388A
BE886388A BE2/58883A BE2058883A BE886388A BE 886388 A BE886388 A BE 886388A BE 2/58883 A BE2/58883 A BE 2/58883A BE 2058883 A BE2058883 A BE 2058883A BE 886388 A BE886388 A BE 886388A
Authority
BE
Belgium
Prior art keywords
control device
gain control
telephone line
digital telephone
line switches
Prior art date
Application number
BE2/58883A
Other languages
English (en)
Inventor
B P Agrawal
K Shenoi
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BE886388A publication Critical patent/BE886388A/nl

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion 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
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002Conversion to or from differential modulation
    • H03M7/3004Digital delta-sigma modulation
    • H03M7/3015Structural details of digital delta-sigma modulators
    • H03M7/3031Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3042Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator being of the error feedback type, i.e. having loop filter stages in the feedback path only
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/544Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
    • G06F7/5443Sum of products
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/002Control of digital or coded signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/04Control of transmission; Equalising
    • H04B3/06Control of transmission; Equalising by the transmitted signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/04Selecting arrangements for multiplex systems for time-division multiplexing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/38Indexing scheme relating to groups G06F7/38 - G06F7/575
    • G06F2207/48Indexing scheme relating to groups G06F7/48 - G06F7/575
    • G06F2207/4802Special implementations
    • G06F2207/4814Non-logic devices, e.g. operational amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion 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
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002Conversion to or from differential modulation
    • H03M7/3004Digital delta-sigma modulation
    • H03M7/3015Structural details of digital delta-sigma modulators
    • H03M7/302Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M7/3024Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3026Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a multiple bit one

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
BE2/58883A 1979-11-28 1980-11-28 Versterkingsregelinrichting voor digitale telefoonlijnschakelingen BE886388A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/098,110 US4272648A (en) 1979-11-28 1979-11-28 Gain control apparatus for digital telephone line circuits

Publications (1)

Publication Number Publication Date
BE886388A true BE886388A (nl) 1981-06-01

Family

ID=22267178

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/58883A BE886388A (nl) 1979-11-28 1980-11-28 Versterkingsregelinrichting voor digitale telefoonlijnschakelingen

Country Status (12)

Country Link
US (1) US4272648A (nl)
JP (1) JPS5942502B2 (nl)
AU (1) AU538239B2 (nl)
BE (1) BE886388A (nl)
CA (1) CA1158790A (nl)
DE (1) DE3044582C2 (nl)
ES (1) ES497281A0 (nl)
FR (1) FR2471093B1 (nl)
GB (1) GB2064242B (nl)
IT (1) IT1193564B (nl)
NL (1) NL8006260A (nl)
SE (1) SE448928B (nl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL190093C (nl) * 1979-12-17 1993-10-18 Victor Company Of Japan Comprimeer- en expandeerstelsel.
US4447826A (en) * 1982-03-18 1984-05-08 Rca Corporation Digital television receiver automatic chroma control system
US4546342A (en) * 1983-12-14 1985-10-08 Digital Recording Research Limited Partnership Data compression method and apparatus
US5029162A (en) * 1990-03-06 1991-07-02 Confertech International Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network
US5259001A (en) * 1991-12-17 1993-11-02 Motorola, Inc. ADPCM decoder with an integral digital receive gain and method therefor
KR0139176B1 (ko) * 1992-06-30 1998-06-15 김광호 다해상도 선형왜곡 보상방법 및 그 장치
US5623513A (en) * 1993-12-13 1997-04-22 Amati Communications Corporation Mitigating clipping and quantization effects in digital transmission systems
JP4899271B2 (ja) * 2001-08-10 2012-03-21 富士通セミコンダクター株式会社 アナログ制御方法、アナログ制御装置、agc、及びagcの制御方法
US7043423B2 (en) * 2002-07-16 2006-05-09 Dolby Laboratories Licensing Corporation Low bit-rate audio coding systems and methods that use expanding quantizers with arithmetic coding
DE10247208A1 (de) * 2002-10-10 2004-04-22 Infineon Technologies Ag Brückenschaltung zur Echounterdrückung in Kommunikationseinrichtungen
JP3755602B2 (ja) * 2003-03-04 2006-03-15 ソニー株式会社 信号処理装置、信用処理装置用プログラム、信号処理装置用プログラムを記録した記録媒体、及び信号処理方法
US10570113B2 (en) 2010-04-09 2020-02-25 Semiconductor Energy Laboratory Co., Ltd. Aromatic amine derivative, light-emitting element, light-emitting device, electronic device, and lighting device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594565A (en) * 1968-05-31 1971-07-20 Singer Co Round off apparatus for electronic calculators
US3997770A (en) * 1973-07-09 1976-12-14 U.S. Philips Corporation Recursive digital filter
NL169535C (nl) * 1974-11-14 1982-07-16 Philips Nv Digitale signaalbewerkingsinrichting met gestuurde kwantisering.
JPS5182548A (en) * 1974-12-27 1976-07-20 Fujitsu Ltd Jidotokaki
GB1584778A (en) * 1976-09-17 1981-02-18 Gen Electric Telecommunication exchanges
GB1596943A (en) * 1978-02-14 1981-09-03 Itt Ind Ltd Level control of digital signals

Also Published As

Publication number Publication date
AU538239B2 (en) 1984-08-02
DE3044582A1 (de) 1981-08-27
ES8106386A1 (es) 1981-08-16
NL8006260A (nl) 1981-07-01
US4272648A (en) 1981-06-09
GB2064242A (en) 1981-06-10
IT1193564B (it) 1988-07-08
FR2471093B1 (fr) 1987-09-18
IT8026299A0 (it) 1980-11-28
SE448928B (sv) 1987-03-23
JPS5942502B2 (ja) 1984-10-15
DE3044582C2 (de) 1986-10-23
FR2471093A1 (fr) 1981-06-12
ES497281A0 (es) 1981-08-16
CA1158790A (en) 1983-12-13
JPS5690636A (en) 1981-07-22
SE8008240L (sv) 1981-05-29
GB2064242B (en) 1983-11-09
AU6462680A (en) 1981-06-04

Similar Documents

Publication Publication Date Title
NL191161C (nl) Digitale versterkingsregelinrichting.
NL7803242A (nl) Stelsel voor digitale transmissie.
IT1193180B (it) Impianto di commutazione digitale a controllo distribuito
IT1119728B (it) Dispositivo di calcolo digitale
BE864425R (nl) Gedecentraliseerde besturing voor een digitaal schakelstelsel
BE846931A (fr) Commande numerique pour machine-outil multiple,
NL7900376A (nl) Digitale servoschakeling.
AR229693A1 (es) Aparato de control telefonico
NL190466C (nl) Besturingsinrichting voor een telecommunicatieschakelstelsel.
NL186286C (nl) Schakelnetwerk voor digitale data.
DK476777A (da) Digitalt styrekredsloeb
BE855151A (nl) Inrichting voor controleren van digitale stelsels
BR7807276A (pt) Dispositivo de comutacao digital
NL191157C (nl) Digitale servoregelinrichting.
NL191218C (nl) Digitale servobesturingsinrichting.
BE886388A (nl) Versterkingsregelinrichting voor digitale telefoonlijnschakelingen
NL187933C (nl) Digitale regelinrichting.
NL7805543A (nl) Digitale tijdschakel-structuren.
FR2312137A1 (fr) Systeme de commande numerique
NL7801866A (nl) Digitale filterinrichting voor niet-uniform gekwantiseerde pcm.
NL7713209A (nl) Abonneelijninrichting voor telefooncentrale.
BE848998A (fr) Circuit de commande de sonnerie telephonique
NL7608295A (nl) Conferentieschakeling voor digitaal werkende telefooncentrales.
NL7806312A (nl) Schakelinrichting voor digitale, met tijdverdeling over gedragen signalen.
NL191076C (nl) Digitaal telefoonschakelstelsel met gedecentraliseerde besturing.

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ALCATEL N.V.

Effective date: 19901130