FR2524225B1 - Procede et systeme pour decoder un signal numerique en utilisant un filtre passe-bas pour frequence variable - Google Patents

Procede et systeme pour decoder un signal numerique en utilisant un filtre passe-bas pour frequence variable

Info

Publication number
FR2524225B1
FR2524225B1 FR8304787A FR8304787A FR2524225B1 FR 2524225 B1 FR2524225 B1 FR 2524225B1 FR 8304787 A FR8304787 A FR 8304787A FR 8304787 A FR8304787 A FR 8304787A FR 2524225 B1 FR2524225 B1 FR 2524225B1
Authority
FR
France
Prior art keywords
decoding
low
digital signal
pass filter
variable frequency
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
FR8304787A
Other languages
English (en)
Other versions
FR2524225A1 (fr
Inventor
Masatsugu Kitamura
Mitsuaki Tanaka
Hiroyuki Takekura
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2524225A1 publication Critical patent/FR2524225A1/fr
Application granted granted Critical
Publication of FR2524225B1 publication Critical patent/FR2524225B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/6505—Recording arrangements for recording a message from the calling party storing speech in digital form
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR8304787A 1982-03-26 1983-03-23 Procede et systeme pour decoder un signal numerique en utilisant un filtre passe-bas pour frequence variable Expired FR2524225B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57048255A JPS58165443A (ja) 1982-03-26 1982-03-26 信号の符号化記憶装置

Publications (2)

Publication Number Publication Date
FR2524225A1 FR2524225A1 (fr) 1983-09-30
FR2524225B1 true FR2524225B1 (fr) 1987-02-27

Family

ID=12798330

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8304787A Expired FR2524225B1 (fr) 1982-03-26 1983-03-23 Procede et systeme pour decoder un signal numerique en utilisant un filtre passe-bas pour frequence variable

Country Status (5)

Country Link
US (1) US4673916A (fr)
JP (1) JPS58165443A (fr)
DE (1) DE3310335A1 (fr)
FR (1) FR2524225B1 (fr)
GB (1) GB2117587A (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06101683B2 (ja) * 1983-03-14 1994-12-12 株式会社日立製作所 デイジタルアナログ変換装置
US4772873A (en) * 1985-08-30 1988-09-20 Digital Recorders, Inc. Digital electronic recorder/player
US4879558A (en) * 1986-12-12 1989-11-07 Sangamo Weston, Inc. Data compression apparatus and method for data recorder with waveform envelope display
US4906995A (en) * 1986-12-12 1990-03-06 Sangamo Weston, Inc. Data compression apparatus and method for data recorder
US4903025A (en) * 1987-04-07 1990-02-20 Nakamichi Corporation Signal path setting circuit
US4816829A (en) * 1987-04-30 1989-03-28 R. R. Donnelley & Sons Company Method of and apparatus for converting digital data between data formats
US4899146A (en) * 1987-04-30 1990-02-06 R. R. Donnelley & Sons Company Method of and apparatus for converting digital data between data formats
US4766328A (en) * 1987-05-26 1988-08-23 System-General Corporation Programmable pulse generator
US4839652A (en) * 1987-06-01 1989-06-13 General Electric Company Method and apparatus for high speed digital phased array coherent imaging system
USRE34976E (en) * 1987-07-24 1995-06-20 Richard J. Helferich Analog/digital voice storage cellular telephone
US4905003A (en) * 1987-07-24 1990-02-27 Richard J. Helferich Analog/digital data storage system
USRE37618E1 (en) * 1987-07-24 2002-04-02 Richard J. Helferich Analog/digital data storage system
US5003576A (en) * 1987-07-24 1991-03-26 Richard J. Helferich Analog/digital voice storage cellular telephone
US4864301A (en) * 1987-07-24 1989-09-05 Richard J. Helferich Variable speed transmission recording and retrieval of data
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
US4903021A (en) * 1987-11-24 1990-02-20 Leibholz Stephen W Signal encoding/decoding employing quasi-random sampling
JP2970907B2 (ja) * 1988-04-13 1999-11-02 株式会社ナムコ Ｐｃｍにおけるアナログ信号合成装置
US4963866A (en) * 1989-03-27 1990-10-16 Digital Recorders, Inc. Multi channel digital random access recorder-player
US5072358A (en) * 1990-03-09 1991-12-10 Daytronic Corporation Process controller
WO1996002977A1 (fr) * 1994-07-13 1996-02-01 Stanford Telecommunications, Inc. Procede et appareil d'abaissement de frequence par repliement du spectre (mixage)
JP4089984B2 (ja) * 1994-08-31 2008-05-28 ローム株式会社 サンプルホールド回路
EP1104196A3 (fr) * 1999-11-09 2004-06-16 Denon, Ltd. Dispositif de compression et de stockage de données
US6495998B1 (en) 2000-09-28 2002-12-17 Sunrise Telecom Corp. Selectable band-pass filtering apparatus and method
KR100406555B1 (ko) 2001-06-29 2003-11-20 주식회사 하이닉스반도체 반도체 메모리 장치 및 그 테스트 방법
US6621443B1 (en) * 2002-10-01 2003-09-16 Smar Res Corp System and method for an acquisition of data in a particular manner
JP4592470B2 (ja) * 2005-03-30 2010-12-01 富士通セミコンダクター株式会社 増幅回路及び増幅回路の制御方法
WO2008031458A1 (fr) * 2006-09-13 2008-03-20 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et dispositifs pour émetteur/récepteur de voix/audio
JP5834377B2 (ja) * 2010-01-13 2015-12-24 富士通株式会社 フィルタ回路

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023277A (en) * 1957-09-19 1962-02-27 Bell Telephone Labor Inc Reduction of sampling rate in pulse code transmission
US3383461A (en) * 1964-08-17 1968-05-14 Hugh L. Dryden Reduced bandwidth video communication system utilizing sampling techniques
US3603773A (en) * 1969-08-28 1971-09-07 Vernitron Corp Digital pulse rate generator
JPS5652445B2 (fr) * 1972-07-18 1981-12-12
GB1501874A (en) * 1975-06-03 1978-02-22 Secr Defence Telecommunications apparatus
JPS6052500B2 (ja) * 1976-06-04 1985-11-19 ソニー株式会社 アナログ−デジタル変換方法
JPS54105954A (en) * 1978-02-07 1979-08-20 Mitsubishi Electric Corp Analog-digital converter
JPS5513506A (en) * 1978-07-14 1980-01-30 Nippon Hoso Kyokai <Nhk> Information signal transmission system
US4393371A (en) * 1979-06-05 1983-07-12 Morgan-Smith Electronics Ltd. Analogue to digital signal conversion and storage system
JPS56119909A (en) * 1980-02-22 1981-09-19 Victor Co Of Japan Ltd Reproducing device for speed variable digital signal
JPS6037660B2 (ja) * 1980-05-06 1985-08-27 日本ビクター株式会社 音声信号の近似圧縮方式
FR2530897B1 (fr) * 1982-03-16 1991-10-31 Victor Company Of Japan Procede et systeme pour une compression de donnees par un echantillonnage a frequence variable

Also Published As

Publication number Publication date
GB8307034D0 (en) 1983-04-20
FR2524225A1 (fr) 1983-09-30
GB2117587A (en) 1983-10-12
DE3310335C2 (fr) 1987-12-03
DE3310335A1 (de) 1983-11-10
JPS58165443A (ja) 1983-09-30
US4673916A (en) 1987-06-16

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Legal Events

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ST Notification of lapse