ES8106383A1 - Un recortador para disminuir la cadencia de palabra de una senal digital del tipo utilizado en sistemas telefonicos digitales - Google Patents

Un recortador para disminuir la cadencia de palabra de una senal digital del tipo utilizado en sistemas telefonicos digitales

Info

Publication number
ES8106383A1
ES8106383A1 ES497384A ES497384A ES8106383A1 ES 8106383 A1 ES8106383 A1 ES 8106383A1 ES 497384 A ES497384 A ES 497384A ES 497384 A ES497384 A ES 497384A ES 8106383 A1 ES8106383 A1 ES 8106383A1
Authority
ES
Spain
Prior art keywords
decimator
digital signal
rate
output
digital
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
ES497384A
Other languages
English (en)
Other versions
ES497384A0 (es
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8106383A1 publication Critical patent/ES8106383A1/es
Publication of ES497384A0 publication Critical patent/ES497384A0/es
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure
    • H03H17/0286—Combinations of filter structures
    • H03H17/0288—Recursive, non-recursive, ladder, lattice structures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0416—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • 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
    • H04B14/046—Systems or methods for reducing noise or bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

RECORTADOR PARA DISMINUIR LA CADENCIA Y AUMENTAR EL NUMERO DE BITS DE PALABRA EN SISTEMAS TELEFONICOS DIGITALES. EL RECORTADOR CONSTA DE UN FILTRO FIR (70) EN CASCADA CON UN FILTRO RECURSIVO DE PASO BAJO DIGITAL DE SEGUNDO ORDEN, DE FORMA QUE LA SEÑAL DIGITAL DE ENTRADA, COMPUESTA DE PALABRAS DEL MISMO NUMERO DE BITS, SE FILTRA OBTENIENDOSE A LA SALIDA UNA SEÑAL RECORTADA QUE CONSTA DE PALABRAS CON MENOR CADENCIA QUE LAS DE ENTRADA Y MAYOR NUMERO DE BITS.
ES497384A 1979-11-28 1980-11-28 Un recortador para disminuir la cadencia de palabra de una senal digital del tipo utilizado en sistemas telefonicos digitales Granted ES497384A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/098,094 US4302631A (en) 1979-11-28 1979-11-28 Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems

Publications (2)

Publication Number Publication Date
ES8106383A1 true ES8106383A1 (es) 1981-08-16
ES497384A0 ES497384A0 (es) 1981-08-16

Family

ID=22267017

Family Applications (1)

Application Number Title Priority Date Filing Date
ES497384A Granted ES497384A0 (es) 1979-11-28 1980-11-28 Un recortador para disminuir la cadencia de palabra de una senal digital del tipo utilizado en sistemas telefonicos digitales

Country Status (8)

Country Link
US (1) US4302631A (es)
JP (1) JPS6035857B2 (es)
BE (1) BE886387A (es)
BR (1) BR8007705A (es)
DE (1) DE3044209A1 (es)
ES (1) ES497384A0 (es)
FR (1) FR2484744A1 (es)
GB (1) GB2064902B (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203012A1 (de) * 1982-01-29 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Verfahren und schaltungsanordnung zur erzeugung von interpolationswerten zwischen gespeicherten stuetzwerten
JPS59129655U (ja) * 1983-02-22 1984-08-31 トヨタ自動車株式会社 オ−トマチツクシ−トベルトのガイドレ−ル装置
EP0122594A3 (en) * 1983-04-18 1986-09-10 International Standard Electric Corporation Line circuit with echo compensation
US4754485A (en) * 1983-12-12 1988-06-28 Digital Equipment Corporation Digital processor for use in a text to speech system
US4588979A (en) * 1984-10-05 1986-05-13 Dbx, Inc. Analog-to-digital converter
US4694414A (en) * 1984-12-19 1987-09-15 Rca Corporation Digital delay interpolation filter with amplitude and phase compensation
CA1233891A (en) * 1985-05-27 1988-03-08 Peter Gillingham Switched capacitor finite impulse response filter
GB2179815B (en) * 1985-08-28 1989-11-29 Plessey Co Plc Interpolator / decimator filter structure
GB2179816B (en) * 1985-08-28 1990-01-10 Plessey Co Plc Interpolator/decimator filter structure
US4855944A (en) * 1987-09-04 1989-08-08 Rockwell International Corporation Noise generator with shaped spectrum
FR2638303B1 (fr) * 1988-10-26 1991-01-18 Texas Instruments France Filtre interpolatif perfectionne
JP2583610B2 (ja) * 1989-07-07 1997-02-19 三菱電機株式会社 Ａ／ｄ、ｄ／ａ変換装置
US5018166A (en) * 1989-10-10 1991-05-21 Hayes Microcomputer Products, Inc. Method and apparatus for baud timing recovery
US5018090A (en) * 1990-03-13 1991-05-21 Rca Licensing Corporation Digital interpolation circuitry
GB9205614D0 (en) * 1992-03-14 1992-04-29 Innovision Ltd Sample rate converter suitable for converting between digital video formats
US5404397A (en) * 1992-04-16 1995-04-04 U.S. Phillips Corporation Conference system with automatic speaker detection and speaker unit
DE4239396C1 (de) * 1992-11-24 1994-02-24 Itt Ind Gmbh Deutsche Verfahren zur Erzeugung eines modifizierten Videosignals
US5917734A (en) * 1996-09-24 1999-06-29 Advanced Micro Device Inc. Parallel decimator method and apparatus
US6941330B2 (en) * 2000-09-27 2005-09-06 Hughes Electronics Corporation Feed forward sigma delta interpolator for use in a fractional-N synthesizer
US7120546B2 (en) * 2003-04-23 2006-10-10 Texas Instruments Incorporated Integrated spectrum analyzer for tuners
US8614994B2 (en) * 2009-07-09 2013-12-24 Broadcom Corporation Method and system for implementing multiple timing domains for primary and secondary synchronization detection in EUTRA/LTE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197499A5 (es) * 1972-08-23 1974-03-22 Ibm France
NL176211C (nl) * 1974-09-16 1985-03-01 Philips Nv Interpolerend digitaal filter.
US3973081A (en) * 1975-09-12 1976-08-03 Trw Inc. Feedback residue compression for digital speech systems
US4020332A (en) * 1975-09-24 1977-04-26 Bell Telephone Laboratories, Incorporated Interpolation-decimation circuit for increasing or decreasing digital sampling frequency
US4021616A (en) * 1976-01-08 1977-05-03 Ncr Corporation Interpolating rate multiplier

Also Published As

Publication number Publication date
GB2064902B (en) 1983-09-14
DE3044209A1 (de) 1981-08-27
JPS5698049A (en) 1981-08-07
GB2064902A (en) 1981-06-17
BE886387A (fr) 1981-06-01
ES497384A0 (es) 1981-08-16
US4302631A (en) 1981-11-24
FR2484744B1 (es) 1984-10-26
FR2484744A1 (fr) 1981-12-18
JPS6035857B2 (ja) 1985-08-16
BR8007705A (pt) 1981-06-09

Similar Documents

Publication Publication Date Title
ES8106383A1 (es) Un recortador para disminuir la cadencia de palabra de una senal digital del tipo utilizado en sistemas telefonicos digitales
CA1175945A (en) Generalized, interpolative process for the digital- analog conversion of pcm signals
AU584597B2 (en) Interpolating filter arrangement with irrational ratio between the input and the output sampling frequencies
JPS5461822A (en) Transmitter circuit
GB1461477A (en) Recursive digital filter
JPS5765918A (en) Sampling frequency converter
GB9121504D0 (en) Signal sampling
JPS56116396A (en) Unidirectional microphone system with secondary sound pressure gradient
JPS5596800A (en) Transmission circuit
JPS57142020A (en) Sampling frequency converter
JPS56120212A (en) Digital filter of block floating decimal point
JPS5360539A (en) Digital filter
JPS5728448A (en) Timing extraction system
JPS5739610A (en) Broadband ccd delay line
JPS56149823A (en) Band pass filter
JPS53141535A (en) Noise eliminator circuit
SU1095352A1 (ru) Усилитель
JPS54120571A (en) Dpcm-pcm converter
JPS5797737A (en) Nonlinear equalizer
JPS5571315A (en) Limit cycle reduction system of digital filter
JPS5680916A (en) Interpolating filter for sampled value
JPS647809A (en) Digital filter
ES255900U (es) Filtro electronico de recepcion para modem de 1200 baudios
JPS5685926A (en) Digital filter
JPS52110508A (en) Digital limiter circuit

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970203