JPS57138254A - Control information transmission system of voice data simultaneous transmission - Google Patents

Control information transmission system of voice data simultaneous transmission

Info

Publication number
JPS57138254A
JPS57138254A JP2378281A JP2378281A JPS57138254A JP S57138254 A JPS57138254 A JP S57138254A JP 2378281 A JP2378281 A JP 2378281A JP 2378281 A JP2378281 A JP 2378281A JP S57138254 A JPS57138254 A JP S57138254A
Authority
JP
Japan
Prior art keywords
voice
control
control information
data
transmission
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
JP2378281A
Other languages
Japanese (ja)
Other versions
JPS632388B2 (en
Inventor
Yoshihiro Tomita
Kazuo Murano
Fumio Amano
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 JP2378281A priority Critical patent/JPS57138254A/en
Publication of JPS57138254A publication Critical patent/JPS57138254A/en
Publication of JPS632388B2 publication Critical patent/JPS632388B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To achieve switching from the transmission of only a voice to the simultaneous transmission of a voice and data by generating control information by varying the least significant digit bit of voice data successively and by sending this control information to a reception side. CONSTITUTION:When a request for switching from the transmission of only a voice to the simultaneous transmission of a voice and data is generated at a transmission part, a control information generating circuit 7 outputs control information 20 and a control-information insertion control signal 21, and a pattern suppressing and control-information inserting circuit 6 inserts a prescribed bit pattern into the least significant digit bit of the voice data. After the control information is sent, a selector 4 is controlled by a selector control signal 19 to transmit the data and voice simultaneously. At a reception side, the least significant bit 36 of the received data is inputted to a shift register 28, whose output is inputted to a control pattern detecting circuit 29 composed of a read-only memory, etc., stored with various patterns previously, thereby detecting a control pattern.
JP2378281A 1981-02-20 1981-02-20 Control information transmission system of voice data simultaneous transmission Granted JPS57138254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2378281A JPS57138254A (en) 1981-02-20 1981-02-20 Control information transmission system of voice data simultaneous transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2378281A JPS57138254A (en) 1981-02-20 1981-02-20 Control information transmission system of voice data simultaneous transmission

Publications (2)

Publication Number Publication Date
JPS57138254A true JPS57138254A (en) 1982-08-26
JPS632388B2 JPS632388B2 (en) 1988-01-19

Family

ID=12119888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2378281A Granted JPS57138254A (en) 1981-02-20 1981-02-20 Control information transmission system of voice data simultaneous transmission

Country Status (1)

Country Link
JP (1) JPS57138254A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147563A (en) * 1983-02-04 1984-08-23 アメリカン　テレフオン　アンド　テレグラフ　カムパニー Communication terminal station apparatus with bidirectional communication line
JPS59172877A (en) * 1983-02-04 1984-09-29 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Communication terminal station with bidirectional communication line
JPS60196028A (en) * 1984-03-19 1985-10-04 Nec Corp Multiplex communication system of sound circuit
JPS6314541A (en) * 1986-07-07 1988-01-21 Nec Corp Data communication system
JP2002351482A (en) * 2001-05-23 2002-12-06 Nec Eng Ltd Method and device for embedding signal
JP2012049617A (en) * 2010-08-24 2012-03-08 Oki Electric Ind Co Ltd Voice rtp communication transmission/reception method, and transmission/reception device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147563A (en) * 1983-02-04 1984-08-23 アメリカン　テレフオン　アンド　テレグラフ　カムパニー Communication terminal station apparatus with bidirectional communication line
JPS59172877A (en) * 1983-02-04 1984-09-29 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Communication terminal station with bidirectional communication line
JPH0311711B2 (en) * 1983-02-04 1991-02-18 Amerikan Terefuon Ando Teregurafu Co
JPS60196028A (en) * 1984-03-19 1985-10-04 Nec Corp Multiplex communication system of sound circuit
JPS6314541A (en) * 1986-07-07 1988-01-21 Nec Corp Data communication system
JP2002351482A (en) * 2001-05-23 2002-12-06 Nec Eng Ltd Method and device for embedding signal
JP4689873B2 (en) * 2001-05-23 2011-05-25 Ｎｅｃエンジニアリング株式会社 Signal embedding method and apparatus
JP2012049617A (en) * 2010-08-24 2012-03-08 Oki Electric Ind Co Ltd Voice rtp communication transmission/reception method, and transmission/reception device

Also Published As

Publication number Publication date
JPS632388B2 (en) 1988-01-19

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