JPS5521610A - Transmission system of audio packet - Google Patents

Transmission system of audio packet

Info

Publication number
JPS5521610A
JPS5521610A JP9366878A JP9366878A JPS5521610A JP S5521610 A JPS5521610 A JP S5521610A JP 9366878 A JP9366878 A JP 9366878A JP 9366878 A JP9366878 A JP 9366878A JP S5521610 A JPS5521610 A JP S5521610A
Authority
JP
Japan
Prior art keywords
stored
packet
blocks
audio
memory
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.)
Granted
Application number
JP9366878A
Other languages
Japanese (ja)
Other versions
JPS5821459B2 (en
Inventor
Shufu Kusayanagi
Masamichi Iwama
Osamu Takahashi
Tadashi Akiba
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP53093668A priority Critical patent/JPS5821459B2/en
Publication of JPS5521610A publication Critical patent/JPS5521610A/en
Publication of JPS5821459B2 publication Critical patent/JPS5821459B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
    • H04J3/1688—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers the demands of the users being taken into account after redundancy removal, e.g. by predictive coding, by variable sampling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To increase the efficiency of packet transmission network, by avoiding to transmit the packet including the audio belonging to no sound. CONSTITUTION:The audio input from the telephone set is PCM-coded into blocks, and each block is given for serial number and stored in the memory. Only sounded part is stored in the memory, but the serial number is given to the blocks independently of sound presence. Accordingly, only (1),(2)... in the audio blocks (1),(2), (3)... are stored. The blocks stored are transmitted to the packet exchange network. At the reception side, the packet received is once stored in the memory, and the serial number of packet is checked at reproduction. Natural audio is reproduced by adding the non-sound parts (3),(6)... to the missing parts.
JP53093668A 1978-08-02 1978-08-02 Audio packet transmission method Expired JPS5821459B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53093668A JPS5821459B2 (en) 1978-08-02 1978-08-02 Audio packet transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53093668A JPS5821459B2 (en) 1978-08-02 1978-08-02 Audio packet transmission method

Publications (2)

Publication Number Publication Date
JPS5521610A true JPS5521610A (en) 1980-02-15
JPS5821459B2 JPS5821459B2 (en) 1983-04-30

Family

ID=14088770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53093668A Expired JPS5821459B2 (en) 1978-08-02 1978-08-02 Audio packet transmission method

Country Status (1)

Country Link
JP (1) JPS5821459B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145454A (en) * 1981-03-04 1982-09-08 Hitachi Ltd Voice packet telephone device for prevention of erroneous transmission
JPS5823099A (en) * 1981-08-03 1983-02-10 日本電気株式会社 Voice packet exchanging system
JPS596694A (en) * 1982-07-05 1984-01-13 Nec Corp Packet exchange system of voice
JPS6143853A (en) * 1984-05-23 1986-03-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of transmitting digitized voice signal
JPS61129952A (en) * 1984-10-25 1986-06-17 エステイーシー・ピーエルシー Packet switching system
JPH1188533A (en) * 1997-09-10 1999-03-30 Kokusai Electric Co Ltd Telephone system
JP2002252623A (en) * 2001-02-26 2002-09-06 Nippon Telegr & Teleph Corp <Ntt> Multimedia communication method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100377A (en) * 1977-04-28 1978-07-11 Bell Telephone Laboratories, Incorporated Packet transmission of speech

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100377A (en) * 1977-04-28 1978-07-11 Bell Telephone Laboratories, Incorporated Packet transmission of speech

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145454A (en) * 1981-03-04 1982-09-08 Hitachi Ltd Voice packet telephone device for prevention of erroneous transmission
JPS5823099A (en) * 1981-08-03 1983-02-10 日本電気株式会社 Voice packet exchanging system
JPS596694A (en) * 1982-07-05 1984-01-13 Nec Corp Packet exchange system of voice
JPS6143853A (en) * 1984-05-23 1986-03-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of transmitting digitized voice signal
JPS61129952A (en) * 1984-10-25 1986-06-17 エステイーシー・ピーエルシー Packet switching system
JPH1188533A (en) * 1997-09-10 1999-03-30 Kokusai Electric Co Ltd Telephone system
JP2002252623A (en) * 2001-02-26 2002-09-06 Nippon Telegr & Teleph Corp <Ntt> Multimedia communication method

Also Published As

Publication number Publication date
JPS5821459B2 (en) 1983-04-30

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