JPS5528608A - Conference operation system - Google Patents

Conference operation system

Info

Publication number
JPS5528608A
JPS5528608A JP10156678A JP10156678A JPS5528608A JP S5528608 A JPS5528608 A JP S5528608A JP 10156678 A JP10156678 A JP 10156678A JP 10156678 A JP10156678 A JP 10156678A JP S5528608 A JPS5528608 A JP S5528608A
Authority
JP
Japan
Prior art keywords
communication signal
conference
buffer memory
total value
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
JP10156678A
Other languages
Japanese (ja)
Other versions
JPS6121027B2 (en
Inventor
Tadashi Murayama
Meiki Yahata
Kazuhiko Hanawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10156678A priority Critical patent/JPS5528608A/en
Publication of JPS5528608A publication Critical patent/JPS5528608A/en
Publication of JPS6121027B2 publication Critical patent/JPS6121027B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To enable to perform conference communication flexible and effective, by sequentially adding the communication signal read out with two times scannings for the buffer memory first, and operating substraction for the respective communication signal from the total value at second. CONSTITUTION:The address designation is made for the buffer memories 4 and 5 by the output of the conference control memory 13 with address designation from the output of the highway channel counter 8 respectively. The conference control memory 13 in the buffer memory 5 scans twice the buffer memory 4 continuously every conference group at the period performing transmission and reception of the one frame communication signal, and sequentially reads out the contained communication signal. First, input is made to the addition and subtraction circuit 16, total value is obtained through sequential addition, the individual communication signal is subtracted from the above total value in the second scanning and the communication signal of itself is eliminated, and rewriting is made to the buffer memory 4 to perform the conference operational processing.
JP10156678A 1978-08-21 1978-08-21 Conference operation system Granted JPS5528608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10156678A JPS5528608A (en) 1978-08-21 1978-08-21 Conference operation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10156678A JPS5528608A (en) 1978-08-21 1978-08-21 Conference operation system

Publications (2)

Publication Number Publication Date
JPS5528608A true JPS5528608A (en) 1980-02-29
JPS6121027B2 JPS6121027B2 (en) 1986-05-24

Family

ID=14303949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10156678A Granted JPS5528608A (en) 1978-08-21 1978-08-21 Conference operation system

Country Status (1)

Country Link
JP (1) JPS5528608A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820055A (en) * 1981-06-08 1983-02-05 ノ−ザン・テレコム・リミテツド Telephone conference circuit of digital system
JPS59152769A (en) * 1983-02-21 1984-08-31 Hitachi Ltd Conference communicating device
JPS59189766A (en) * 1983-01-18 1984-10-27 プレツシ−　オ−バ−シ−ズ　リミテツド Bridge device for conference
JPS60214666A (en) * 1984-04-11 1985-10-26 Fujitsu Ltd Speech signal adding circuit
JPS6377254A (en) * 1986-09-19 1988-04-07 Fujitsu Ltd Exchange system having mixing function
JPS63224454A (en) * 1987-03-13 1988-09-19 Oki Electric Ind Co Ltd System for controlling conference trunk in digital network

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820055A (en) * 1981-06-08 1983-02-05 ノ−ザン・テレコム・リミテツド Telephone conference circuit of digital system
JPH0328868B2 (en) * 1981-06-08 1991-04-22 Northern Telecom Ltd
JPS59189766A (en) * 1983-01-18 1984-10-27 プレツシ−　オ−バ−シ−ズ　リミテツド Bridge device for conference
JPS59152769A (en) * 1983-02-21 1984-08-31 Hitachi Ltd Conference communicating device
JPS60214666A (en) * 1984-04-11 1985-10-26 Fujitsu Ltd Speech signal adding circuit
JPS6377254A (en) * 1986-09-19 1988-04-07 Fujitsu Ltd Exchange system having mixing function
JPS63224454A (en) * 1987-03-13 1988-09-19 Oki Electric Ind Co Ltd System for controlling conference trunk in digital network

Also Published As

Publication number Publication date
JPS6121027B2 (en) 1986-05-24

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