DE3650163D1 - Integrierte digitale Schaltung zur Verarbeitung von Sprachsignalen. - Google Patents
Integrierte digitale Schaltung zur Verarbeitung von Sprachsignalen.Info
- Publication number
- DE3650163D1 DE3650163D1 DE3650163T DE3650163T DE3650163D1 DE 3650163 D1 DE3650163 D1 DE 3650163D1 DE 3650163 T DE3650163 T DE 3650163T DE 3650163 T DE3650163 T DE 3650163T DE 3650163 D1 DE3650163 D1 DE 3650163D1
- Authority
- DE
- Germany
- Prior art keywords
- digital circuit
- voice signals
- integrated digital
- processing voice
- processing
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion 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
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3044—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM]
- H03M7/3046—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM] adaptive, e.g. adaptive differential pulse code modulation [ADPCM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60040507A JPH07105723B2 (ja) | 1985-03-01 | 1985-03-01 | 予測符号化装置 |
JP21013285A JPH0693630B2 (ja) | 1985-09-25 | 1985-09-25 | Adpcm復号装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3650163D1 true DE3650163D1 (de) | 1995-01-12 |
DE3650163T2 DE3650163T2 (de) | 1995-04-20 |
Family
ID=26379970
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3650163T Expired - Lifetime DE3650163T2 (de) | 1985-03-01 | 1986-02-28 | Integrierte digitale Schaltung zur Verarbeitung von Sprachsignalen. |
DE8686301464T Expired - Lifetime DE3682296D1 (de) | 1985-03-01 | 1986-02-28 | Digitale integrierte schaltung zur verarbeitung eines sprachsignals. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686301464T Expired - Lifetime DE3682296D1 (de) | 1985-03-01 | 1986-02-28 | Digitale integrierte schaltung zur verarbeitung eines sprachsignals. |
Country Status (3)
Country | Link |
---|---|
US (2) | US4686512A (de) |
EP (2) | EP0429092B1 (de) |
DE (2) | DE3650163T2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07105723B2 (ja) | 1985-03-01 | 1995-11-13 | 株式会社東芝 | 予測符号化装置 |
US4760461A (en) * | 1986-02-28 | 1988-07-26 | Kabushiki Kaisha Toshiba | Binary data compression and expansion processing apparatus |
EP0331405B1 (de) * | 1988-02-29 | 1996-11-27 | Sony Corporation | Verfahren und Einrichtung zur Digitalsignalverarbeitung |
US5168116A (en) * | 1988-11-02 | 1992-12-01 | Yamaha Corporation | Method and device for compressing signals of plural channels |
US5255346A (en) * | 1989-12-28 | 1993-10-19 | U S West Advanced Technologies, Inc. | Method and apparatus for design of a vector quantizer |
IT1271297B (it) * | 1994-12-20 | 1997-05-27 | Alcatel Italia | Metodo e disposizione circuitale per permettere conversazioni telefoniche tra piu' utenti |
JPH10187199A (ja) * | 1996-12-24 | 1998-07-14 | Oki Electric Ind Co Ltd | 半導体記憶媒体記録装置及び半導体記憶媒体再生装置 |
JP3143406B2 (ja) * | 1997-02-19 | 2001-03-07 | 三洋電機株式会社 | 音声符号化方法 |
US6556581B1 (en) * | 1998-10-30 | 2003-04-29 | Hewlett-Packard Development Company, L.P. | Ethernet to phase shift key converter |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1301905A (de) * | 1970-06-04 | 1973-01-04 | ||
US4128832A (en) * | 1976-01-08 | 1978-12-05 | Ncr Corporation | Combined encoder/decoder |
US4109111A (en) * | 1977-08-23 | 1978-08-22 | Digital Switch Corporation | Method and apparatus for establishing conference calls in a time division multiplex pulse code modulation switching system |
US4190742A (en) * | 1978-06-05 | 1980-02-26 | Siemens Aktiengesellschaft | Process and apparatus for producing conference connections in a PCM time multiplex switching system |
GB2082875B (en) * | 1980-08-29 | 1984-08-15 | Gen Electric Co Ltd | Conference bridge circuit arrangements |
DE3148886C1 (de) * | 1981-12-10 | 1983-08-11 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren und Schaltungsanordnung zum Herstellen einer Konferenzverbindung |
US4571737A (en) * | 1982-12-10 | 1986-02-18 | Nec Corporation | Adaptive differential pulse code modulation decoding circuit |
CA1208789A (en) * | 1983-11-25 | 1986-07-29 | Peter E. Chow | Adpcm encoder/decoder with improved tracking |
US4646322A (en) * | 1983-12-19 | 1987-02-24 | Telex Computer Products, Inc. | Adaptive delta modulation codec |
DE3417139A1 (de) * | 1984-05-09 | 1985-11-14 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Digitaler dpcm-codierer/decodierer fuer hohe verarbeitungsgeschwindigkeiten, insbesondere fuer fernsehbildsignale |
-
1986
- 1986-02-27 US US06/833,252 patent/US4686512A/en not_active Expired - Lifetime
- 1986-02-28 EP EP90122720A patent/EP0429092B1/de not_active Expired - Lifetime
- 1986-02-28 EP EP86301464A patent/EP0193409B1/de not_active Expired
- 1986-02-28 DE DE3650163T patent/DE3650163T2/de not_active Expired - Lifetime
- 1986-02-28 DE DE8686301464T patent/DE3682296D1/de not_active Expired - Lifetime
-
1987
- 1987-05-18 US US07/050,563 patent/US4754258A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3682296D1 (de) | 1991-12-12 |
US4754258A (en) | 1988-06-28 |
US4686512A (en) | 1987-08-11 |
EP0429092B1 (de) | 1994-11-30 |
DE3650163T2 (de) | 1995-04-20 |
EP0193409A2 (de) | 1986-09-03 |
EP0429092A1 (de) | 1991-05-29 |
EP0193409A3 (en) | 1988-09-14 |
EP0193409B1 (de) | 1991-11-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3485792D1 (de) | Digitale signalverarbeitungseinrichtungen. | |
IT8522568A0 (it) | Telefono altoparlante digitale. | |
DE3682305D1 (de) | Integrierte digitale schaltungen. | |
DE3483457D1 (de) | Geraet zur digitalen signalerregung. | |
DE3577141D1 (de) | Programmierbare digitale hystereseschaltung. | |
DE3786881D1 (de) | Digitale klemm- und verstaerkungsschaltung. | |
ATA245184A (de) | Schaltungsanordnung zur verarbeitung von signalen | |
DE3672003D1 (de) | Schaltung zur wiedergabe digitaler signale. | |
DE3482641D1 (de) | Signalverarbeitungsschaltung. | |
AT373705B (de) | Schaltungsanordnung zur verarbeitung digitaler signale | |
DE3578026D1 (de) | Schaltung zur verarbeitung von farbdifferenzsignalen. | |
DE3784769D1 (de) | Videosignal-verarbeitungsschaltungen. | |
DE69032382D1 (de) | Digitale Signalverarbeitungsschaltung | |
DE3584601D1 (de) | Digitale konferenzschaltung. | |
DE3585042D1 (de) | Farbsignal-verarbeitungsschaltung. | |
DE3650163D1 (de) | Integrierte digitale Schaltung zur Verarbeitung von Sprachsignalen. | |
DE3751262D1 (de) | Verarbeitungsschaltung für Videosignale. | |
DE3884597D1 (de) | Digitale farbsignalverarbeitungsschaltung. | |
DE3676854D1 (de) | Digitale chrominanzsignalverarbeitungsschaltung. | |
DE3684525D1 (de) | Digitale integrierte schaltungen. | |
DE3484003D1 (de) | Geraet zur verarbeitung von ekg-signalen. | |
DE3480895D1 (de) | Signal-verarbeitungsschaltungen. | |
DE3784212D1 (de) | Digitale stummschaltung. | |
DE3584864D1 (de) | Digitaler schwingkreis. | |
DE3576632D1 (de) | Schaltung zur bearbeitung von videosignalen. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) |