JPS5632852A - Composite transmission system for data and sound - Google Patents

Composite transmission system for data and sound

Info

Publication number
JPS5632852A
JPS5632852A JP10884979A JP10884979A JPS5632852A JP S5632852 A JPS5632852 A JP S5632852A JP 10884979 A JP10884979 A JP 10884979A JP 10884979 A JP10884979 A JP 10884979A JP S5632852 A JPS5632852 A JP S5632852A
Authority
JP
Japan
Prior art keywords
sound
frame
data
silent
circuit
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
JP10884979A
Other languages
Japanese (ja)
Other versions
JPS622743B2 (en
Inventor
Takashi Suzuki
Subeo Sugawara
Shuji Tomita
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
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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
Application filed by Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP10884979A priority Critical patent/JPS5632852A/en
Publication of JPS5632852A publication Critical patent/JPS5632852A/en
Publication of JPS622743B2 publication Critical patent/JPS622743B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/064—Data transmission during pauses in telephone conversation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To obtain a composite transmission system for data and sound that can secure the transparency of sound by putting an error recovering method into operation as to data frames and by inhibiting error recovery control as to sound frames. CONSTITUTION:A composite signal, including a data frame inserted into a silent sound frame, from the transmission side is received by receiving buffer RB and the sound frame and data frame are distributed by sound-data distributing circuit DIS to buffers SBR and DBR respectively. On reception of the data frame, silent-sound- frame generating circuit NSG sends the silent sound frame to sound frame buffer SBR. Expected-sequence-number generating circuit ESN and sequence-number checking circuit SNC check the normalcy of the data frame to make a response for error control by way of sending circuit NR or RR for an answer signal for the normalcy or resending request.
JP10884979A 1979-08-27 1979-08-27 Composite transmission system for data and sound Granted JPS5632852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10884979A JPS5632852A (en) 1979-08-27 1979-08-27 Composite transmission system for data and sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10884979A JPS5632852A (en) 1979-08-27 1979-08-27 Composite transmission system for data and sound

Publications (2)

Publication Number Publication Date
JPS5632852A true JPS5632852A (en) 1981-04-02
JPS622743B2 JPS622743B2 (en) 1987-01-21

Family

ID=14495138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10884979A Granted JPS5632852A (en) 1979-08-27 1979-08-27 Composite transmission system for data and sound

Country Status (1)

Country Link
JP (1) JPS5632852A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173932A (en) * 1982-04-05 1983-10-12 Oki Electric Ind Co Ltd Packet transmission system
JPH03253131A (en) * 1990-03-01 1991-11-12 Mitsubishi Electric Corp Sound/data multiplexing circuit
JPH0433454A (en) * 1990-05-30 1992-02-04 Fujitsu Ltd Information transmitter
EP0806873A3 (en) * 1996-05-08 1998-11-18 Matsushita Electric Industrial Co., Ltd. Multiplex transmission method and system, and audio jitter absorbing method used therein
JP2009021781A (en) * 2007-07-11 2009-01-29 Nec Corp Data communication system, communication equipment, data communication method, and program for communication control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429504A (en) * 1977-08-09 1979-03-05 Fujitsu Ltd Simultaneous service system for audio and date communication
JPS5429902A (en) * 1977-08-10 1979-03-06 Fujitsu Ltd Error retransmission control system
JPS5437408A (en) * 1977-08-27 1979-03-19 Fujitsu Ltd Aural bucket process system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429504A (en) * 1977-08-09 1979-03-05 Fujitsu Ltd Simultaneous service system for audio and date communication
JPS5429902A (en) * 1977-08-10 1979-03-06 Fujitsu Ltd Error retransmission control system
JPS5437408A (en) * 1977-08-27 1979-03-19 Fujitsu Ltd Aural bucket process system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173932A (en) * 1982-04-05 1983-10-12 Oki Electric Ind Co Ltd Packet transmission system
JPH03253131A (en) * 1990-03-01 1991-11-12 Mitsubishi Electric Corp Sound/data multiplexing circuit
JPH0433454A (en) * 1990-05-30 1992-02-04 Fujitsu Ltd Information transmitter
JP2562375B2 (en) * 1990-05-30 1996-12-11 富士通株式会社 Information transmission device
EP0806873A3 (en) * 1996-05-08 1998-11-18 Matsushita Electric Industrial Co., Ltd. Multiplex transmission method and system, and audio jitter absorbing method used therein
JP2009021781A (en) * 2007-07-11 2009-01-29 Nec Corp Data communication system, communication equipment, data communication method, and program for communication control

Also Published As

Publication number Publication date
JPS622743B2 (en) 1987-01-21

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