BR8009086A - Codificador interpolador para aparelho de circuito de processamento de audio para linha de assinante - Google Patents

Codificador interpolador para aparelho de circuito de processamento de audio para linha de assinante

Info

Publication number
BR8009086A
BR8009086A BR8009086A BR8009086A BR8009086A BR 8009086 A BR8009086 A BR 8009086A BR 8009086 A BR8009086 A BR 8009086A BR 8009086 A BR8009086 A BR 8009086A BR 8009086 A BR8009086 A BR 8009086A
Authority
BR
Brazil
Prior art keywords
interpolator
encoder
processing circuit
subscriber line
audio processing
Prior art date
Application number
BR8009086A
Other languages
English (en)
Inventor
R Apfel
Original Assignee
Advanced Micro Devices Inc
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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Publication of BR8009086A publication Critical patent/BR8009086A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereo-Broadcasting Methods (AREA)
BR8009086A 1980-06-18 1980-06-18 Codificador interpolador para aparelho de circuito de processamento de audio para linha de assinante BR8009086A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1980/000752 WO1981003724A1 (en) 1980-06-18 1980-06-18 Interpolative encoder for subscriber line audio processing circuit apparatus

Publications (1)

Publication Number Publication Date
BR8009086A true BR8009086A (pt) 1982-05-11

Family

ID=22154394

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8009086A BR8009086A (pt) 1980-06-18 1980-06-18 Codificador interpolador para aparelho de circuito de processamento de audio para linha de assinante

Country Status (11)

Country Link
EP (1) EP0054033B1 (pt)
JP (1) JPS57500857A (pt)
AU (1) AU544141B2 (pt)
BR (1) BR8009086A (pt)
CA (1) CA1166372A (pt)
DE (1) DE3071023D1 (pt)
DK (1) DK159704C (pt)
FR (1) FR2485297A1 (pt)
HK (1) HK26288A (pt)
NO (1) NO156348C (pt)
WO (1) WO1981003724A1 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377858A (en) * 1980-10-23 1983-03-22 International Telephone And Telegraph Corporation Digital two-to-four wire converter for full duplex signals
US4351060A (en) * 1980-10-23 1982-09-21 International Telephone And Telegraph Corporation Automatic, digitally synthesized matching line terminating impedance
US4381561A (en) * 1980-10-23 1983-04-26 International Telephone And Telegraph Corporation All digital LSI line circuit for analog lines
FR2524205B1 (fr) * 1982-03-26 1985-10-04 Socapex Connecteur de micro-boitier ceramique a connexions perimetriques et systeme de connexion electrique et thermique utilisant un tel connecteur
NO160750C (no) * 1985-06-27 1989-05-24 Norway Geophysical Co Anordning for digital signalbehandling paa kontinuerlige bitstroemmer.
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
US5187664A (en) * 1990-11-27 1993-02-16 Eaton-Kenway, Inc. Proportional position-sensing system for an automatic guided vehicle
US5281901A (en) * 1990-12-03 1994-01-25 Eaton-Kenway, Inc. Downward compatible AGV system and methods
US5216605A (en) * 1990-06-28 1993-06-01 Eaton-Kenway, Inc. Update marker system for navigation of an automatic guided vehicle
US5175415A (en) * 1990-11-27 1992-12-29 Eaton-Kenway, Inc. Combination drive-wheel mechanism and travel-sensor mechanism
US5539646A (en) * 1993-10-26 1996-07-23 Hk Systems Inc. Method and apparatus for an AGV inertial table having an angular rate sensor and a voltage controlled oscillator
DE102005050307A1 (de) * 2005-10-20 2007-04-26 Rohde & Schwarz Gmbh & Co. Kg Digitales Filter mit starrem Filterzustand während ungültiger Signalbereiche in einer digitalen Filterkaskade

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241135A (en) * 1963-03-04 1966-03-15 Philco Corp Aperiodic pulse code modulator or analog to digital converter
US3314015A (en) * 1963-09-16 1967-04-11 Bell Telephone Labor Inc Digitally synthesized artificial transfer networks
US3798637A (en) * 1971-06-14 1974-03-19 Krone Gmbh Pcm coder with compression characteristic
US3789199A (en) * 1972-05-01 1974-01-29 Bell Telephone Labor Inc Signal mode converter and processor
US3790637A (en) * 1972-05-04 1974-02-05 American Cyanamid Co Process for the manufacture of vanillin from sulfite waste liquor
US3906400A (en) * 1973-12-17 1975-09-16 Adams Russell Co Transfer function realization with one-bit coefficients

Also Published As

Publication number Publication date
CA1166372A (en) 1984-04-24
DE3071023D1 (en) 1985-09-26
AU544141B2 (en) 1985-05-16
DK159704C (da) 1991-04-15
DK70082A (da) 1982-02-17
FR2485297B1 (pt) 1984-01-20
EP0054033B1 (en) 1985-08-21
HK26288A (en) 1988-04-22
NO156348C (no) 1987-09-02
JPS57500857A (pt) 1982-05-13
AU7030481A (en) 1982-01-07
DK159704B (da) 1990-11-19
EP0054033A1 (en) 1982-06-23
EP0054033A4 (en) 1982-12-09
FR2485297A1 (fr) 1981-12-24
WO1981003724A1 (en) 1981-12-24
NO156348B (no) 1987-05-25
NO820512L (no) 1982-02-18

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Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19950618