ES8704683A1 - Un descodificador de digital a analogico para empleo en com-binacion con un codificador - Google Patents
Un descodificador de digital a analogico para empleo en com-binacion con un codificadorInfo
- Publication number
- ES8704683A1 ES8704683A1 ES548969A ES548969A ES8704683A1 ES 8704683 A1 ES8704683 A1 ES 8704683A1 ES 548969 A ES548969 A ES 548969A ES 548969 A ES548969 A ES 548969A ES 8704683 A1 ES8704683 A1 ES 8704683A1
- 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
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)
- Selective Calling Equipment (AREA)
- Circuits Of Receivers In General (AREA)
- Analogue/Digital Conversion (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
DESCODIFICADOR DE DIGITAL A ANALOGICO PARA EMPLEAR EN COMBINACION CON UN CODIFICADOR. CONSTA DE UN CIRCUITO (18) PARA LA OBTENCION DE ALTURA DE ESCALON DE CUANTIFICACION PARA DEDUCIR, DE LA SEÑAL ANALOGICA DE ENTRADA, UNA SEÑAL DE CONTROL CON UN ANCHO DE BANDA RESTRINGIDO E INDICATIVO DE UNA ALTURA DE ESCALON DE CUANTIFICACION DE CONVERSION VARIABLE; DE UN PRIMER CONVERTIDCOR (26) PARA CONVERTIR LA SEÑAL ANALOGICA DE ENTRADA EN UNA SEÑAL DIGITAL, RESPONDIENDO DICHO CONVERTIDOR A LA SEÑAL DE CONTROL DE MODO QUE LA SEÑAL DIGITAL SEA GENERADA DE ACUERDO CON LA ALTURA DE ESCALON DE CUANTIFICACION VARIABLE; Y DE UN CIRCUITO DE RETARDO PARA INTRODUCIR RETARDO EN LA SEÑAL ANALOGICA DE ENTRADA ANTES DE QUE LLEGUE AL PRIMER CONVERTIDOR.
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 |
---|---|
ES548969A0 ES548969A0 (es) | 1987-04-01 |
ES8704683A1 true ES8704683A1 (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 |
ES548969A Expired ES8704683A1 (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 |
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 |
---|---|---|---|
ES548971A Expired ES8704685A1 (es) | 1983-10-07 | 1985-11-16 | Un descodificador de digital a analogico |
Country Status (9)
Country | Link |
---|---|
EP (3) | EP0384544A3 (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)
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 |
AU2002219148A1 (en) * | 2001-11-29 | 2003-06-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Decoding method for a delta modulated signal |
WO2020073024A1 (en) | 2018-10-05 | 2020-04-09 | Magic Leap, Inc. | Emphasis for audio spatialization |
Family Cites Families (10)
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 |
-
1984
- 1984-09-07 AU AU32816/84A patent/AU572556B2/en not_active Ceased
- 1984-09-07 AU AU32815/84A patent/AU572555B2/en not_active Expired
- 1984-09-28 KR KR1019840006015A patent/KR930005647B1/ko not_active IP Right Cessation
- 1984-10-05 BR BR8405049A patent/BR8405049A/pt not_active IP Right Cessation
- 1984-10-05 DK DK478884A patent/DK478884A/da not_active Application Discontinuation
- 1984-10-05 NO NO844016A patent/NO167949C/no unknown
- 1984-10-05 CA CA000464818A patent/CA1257930A/en not_active Expired
- 1984-10-05 ES ES84536552A patent/ES8606753A1/es not_active Expired
- 1984-10-08 EP EP19900200455 patent/EP0384544A3/en not_active Withdrawn
- 1984-10-08 EP EP84306849A patent/EP0138548B1/en not_active Expired - Lifetime
- 1984-10-08 EP EP90200454A patent/EP0376933A3/en not_active Withdrawn
- 1984-10-08 DE DE8484306849T patent/DE3485530D1/de not_active Expired - Fee Related
-
1985
- 1985-11-16 ES ES548970A patent/ES8704684A1/es not_active Expired
- 1985-11-16 ES ES548969A patent/ES8704683A1/es not_active Expired
- 1985-11-16 ES ES548971A patent/ES8704685A1/es not_active Expired
-
1988
- 1988-06-02 AU AU17311/88A patent/AU585754B2/en not_active Ceased
- 1988-06-02 AU AU17310/88A patent/AU587940B2/en not_active Ceased
- 1988-06-02 AU AU17309/88A patent/AU587939B2/en not_active Expired
- 1988-06-02 AU AU17307/88A patent/AU607505B2/en not_active Expired
-
1991
- 1991-02-25 DK DK032191A patent/DK32191A/da not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970401 |