ES8704685A1 - Un descodificador de digital a analogico - Google Patents

Un descodificador de digital a analogico

Info

Publication number
ES8704685A1
ES8704685A1 ES548971A ES548971A ES8704685A1 ES 8704685 A1 ES8704685 A1 ES 8704685A1 ES 548971 A ES548971 A ES 548971A ES 548971 A ES548971 A ES 548971A ES 8704685 A1 ES8704685 A1 ES 8704685A1
Authority
ES
Spain
Prior art keywords
size
control signal
digital
circuit
modulator
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
ES548971A
Other languages
English (en)
Other versions
ES548971A0 (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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories Licensing 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
Priority claimed from US06/642,045 external-priority patent/US4700362A/en
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of ES8704685A1 publication Critical patent/ES8704685A1/es
Publication of ES548971A0 publication Critical patent/ES548971A0/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • H03M3/022—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • 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
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/062—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM]
    • H04B14/064—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM] with adaptive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuits Of Receivers In General (AREA)
  • Analogue/Digital Conversion (AREA)
  • Selective Calling Equipment (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

DESCODIFICADOR DE SEÑALES DIGITALES A ANALOGICAS. CONSTA DE UN DESMODULADOR DELTA (42) ADAPTATIVO PARA RECIBIR LA CADENA DE BITIOS (30) DE AUDIO DIGITAL TRANSMITIDA A TRAVES DEL MEDIO; Y DE UN CONVERTIDOR (44) DIGITAL-ANALOGICO PARA RECIBIR LA CADENA (28) DE BITIOS DE INFORMACION DIGITAL DE ALTURA DE ESCALON, EL CUAL CONVIERTE LA CADENA DE BITIOS DIGITALES EN UNA SEÑAL DE CONTROL ANALOGICA DE ALTURA DE ESCALON QUE ES SUMINISTRADA AL CIRCUITO (46) DE LIMITACION DE ANCHO DE BANDA. EL DESMODULADOR DELTA (42) ADAPTATIVO GENERA UNA SEÑAL DE SALIDA DE AUDIO ANALOGICA A PARTIR DE LA CADENA DE BITIOS DE AUDIO, DE ACUERDO CON LA SEÑAL DE CONTROL DE ALTURA DE ESCALON LIMITADA EN ANCHO DE BANDA.
ES548971A 1983-10-07 1985-11-16 Un descodificador de digital a analogico Expired ES8704685A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US54019583A 1983-10-07 1983-10-07
US54042183A 1983-10-07 1983-10-07
US06/642,045 US4700362A (en) 1983-10-07 1984-08-21 A-D encoder and D-A decoder system

Publications (2)

Publication Number Publication Date
ES8704685A1 true ES8704685A1 (es) 1987-04-01
ES548971A0 ES548971A0 (es) 1987-04-01

Family

ID=27415317

Family Applications (4)

Application Number Title Priority Date Filing Date
ES84536552A Expired ES8606753A1 (es) 1983-10-07 1984-10-05 Un codificador electronico para convertir una senal analogica de entrada en una senal digital
ES548970A Expired ES8704684A1 (es) 1983-10-07 1985-11-16 Un descodificador de digital a analogico para empleo en com-binacion con un codificador
ES548971A Expired ES8704685A1 (es) 1983-10-07 1985-11-16 Un descodificador de digital a analogico
ES548969A Expired ES8704683A1 (es) 1983-10-07 1985-11-16 Un descodificador de digital a analogico para empleo en com-binacion con un codificador

Family Applications Before (2)

Application Number Title Priority Date Filing Date
ES84536552A Expired ES8606753A1 (es) 1983-10-07 1984-10-05 Un codificador electronico para convertir una senal analogica de entrada en una senal digital
ES548970A Expired ES8704684A1 (es) 1983-10-07 1985-11-16 Un descodificador de digital a analogico para empleo en com-binacion con un codificador

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES548969A Expired ES8704683A1 (es) 1983-10-07 1985-11-16 Un descodificador de digital a analogico para empleo en com-binacion con un codificador

Country Status (9)

Country Link
EP (3) EP0138548B1 (es)
KR (1) KR930005647B1 (es)
AU (6) AU572556B2 (es)
BR (1) BR8405049A (es)
CA (1) CA1257930A (es)
DE (1) DE3485530D1 (es)
DK (2) DK478884A (es)
ES (4) ES8606753A1 (es)
NO (1) NO167949C (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU572556B2 (en) * 1983-10-07 1988-05-12 Dolby Laboratories Licensing Corporation A/d encoder and decoder
US4656633A (en) * 1985-03-15 1987-04-07 Dolby Laboratories Licensing Corporation Error concealment system
US4829299A (en) * 1987-09-25 1989-05-09 Dolby Laboratories Licensing Corporation Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading
US5153593A (en) * 1990-04-26 1992-10-06 Hughes Aircraft Company Multi-stage sigma-delta analog-to-digital converter
WO2003046888A1 (en) * 2001-11-29 2003-06-05 Telefonaktiebolaget Lm Ericsson (Publ) Decoding method for a delta modulated signal
JP2022504203A (ja) * 2018-10-05 2022-01-13 マジック リープ， インコーポレイテッド オーディオ空間化のための強調

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497624A (en) * 1966-08-16 1970-02-24 Bell Telephone Labor Inc Continuously compounded delta modulation
US3631520A (en) * 1968-08-19 1971-12-28 Bell Telephone Labor Inc Predictive coding of speech signals
US4208740A (en) * 1978-12-20 1980-06-17 International Business Machines Corporation Adaptive delta modulation system
US4264974A (en) * 1979-12-17 1981-04-28 International Business Machines Corporation Optimized digital delta modulation compander having truncation effect error recovery
DE3002960A1 (de) * 1980-01-29 1981-09-10 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Adaptiver deltamodulator
US4352191A (en) * 1980-05-19 1982-09-28 Un Chong K Hybrid companding delta modulation system
NL8105196A (nl) * 1981-11-17 1983-06-16 Philips Nv Differentieel pulscode modulatie overdrachtstelsel.
US4507791A (en) * 1982-05-05 1985-03-26 Dolby Laboratories Licensing Corporation Analog and digital signal apparatus
AU2021383A (en) * 1982-10-09 1984-04-12 International Standard Electric Corp. Digital p.c.m. communication system
AU572556B2 (en) * 1983-10-07 1988-05-12 Dolby Laboratories Licensing Corporation A/d encoder and decoder

Also Published As

Publication number Publication date
AU572556B2 (en) 1988-05-12
AU1731188A (en) 1988-09-01
KR850003089A (ko) 1985-05-28
AU3281584A (en) 1985-04-18
DK32191A (da) 1991-02-25
EP0138548A2 (en) 1985-04-24
EP0138548B1 (en) 1992-03-04
BR8405049A (pt) 1985-08-20
AU1731088A (en) 1988-09-01
KR930005647B1 (ko) 1993-06-23
DK478884A (da) 1985-04-08
DK478884D0 (da) 1984-10-05
EP0384544A3 (en) 1990-09-12
EP0138548A3 (en) 1988-01-27
ES548971A0 (es) 1987-04-01
AU587940B2 (en) 1989-08-31
AU572555B2 (en) 1988-05-12
AU587939B2 (en) 1989-08-31
CA1257930A (en) 1989-07-25
ES548969A0 (es) 1987-04-01
ES548970A0 (es) 1987-04-01
NO167949B (no) 1991-09-16
AU1730788A (en) 1988-09-01
EP0376933A3 (en) 1990-08-22
AU607505B2 (en) 1991-03-07
DE3485530D1 (de) 1992-04-09
ES8606753A1 (es) 1986-04-01
ES8704683A1 (es) 1987-04-01
AU585754B2 (en) 1989-06-22
DK32191D0 (da) 1991-02-25
ES536552A0 (es) 1986-04-01
EP0376933A2 (en) 1990-07-04
ES8704684A1 (es) 1987-04-01
NO844016L (no) 1985-04-09
AU1730988A (en) 1988-09-01
EP0384544A2 (en) 1990-08-29
AU3281684A (en) 1985-04-18
NO167949C (no) 1991-12-27

Similar Documents

Publication Publication Date Title
ES8500530A1 (es) Un dispositivo de conversion de analogico en digital.
IE44724L (en) Data transmission
ES8501934A1 (es) Un dispositivo de conversion de analogico a digital de audio
CA2211347A1 (en) An encoding method and apparatus using a control circuit switching between two backward adaptive encoders for transmission
JPS5731247A (en) Multiplexing tramsmission system
EP0280574A3 (en) Method and apparatus for predictive coding
ES8704683A1 (es) Un descodificador de digital a analogico para empleo en com-binacion con un codificador
HK65697A (en) Method for transmitting a video signal
DK249785A (da) Frekvensdemodulator, navnlig til anvendelse i en fjernsynsmodtager
GB2258374A (en) Adjusting the level of an audio signal
GB2168577B (en) System for converting a voice signal to a pitch signal
ES8204901A1 (es) Perfeccionamientos introducidos en un receptor de television
JPS51114009A (en) Digital audio signal transmitter
CA2075065A1 (en) Hybrid analog/digital signal processing
HK108290A (en) Method of recording pcm audio transmission signals with signal error compensation
JPS5620320A (en) Digital frequency control circuit
AU2007683A (en) Differential pcm transmission
FR2160030A5 (es)
FR2391599A1 (fr) Installation pour la transmission de signaux d'information a l'aide d'une modulation delta a reglage numerique
SU499661A1 (ru) Устройство дл передачи сообщений с адаптивной дискретизацией
GB1287171A (en) Improvements in digital transmission of telephony signals
JPS55130266A (en) Control system for attendant board
GB1506530A (en) Transmitting video signals
JPS57106288A (en) Encoding control system between frames
JPS5793756A (en) Transmission system for digital data using digital-to- analog, analog-to-digital conversion

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401