JPS551711A - Communication path drive system of 4 wire type - Google Patents

Communication path drive system of 4 wire type

Info

Publication number
JPS551711A
JPS551711A JP7375678A JP7375678A JPS551711A JP S551711 A JPS551711 A JP S551711A JP 7375678 A JP7375678 A JP 7375678A JP 7375678 A JP7375678 A JP 7375678A JP S551711 A JPS551711 A JP S551711A
Authority
JP
Japan
Prior art keywords
communication path
drive
wire type
circuits
drive system
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.)
Pending
Application number
JP7375678A
Other languages
Japanese (ja)
Inventor
Kouichi Munakata
Shinji Kiyohara
Teruo Morishita
Saburo Okuda
Toshio Hidaka
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon 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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP7375678A priority Critical patent/JPS551711A/en
Publication of JPS551711A publication Critical patent/JPS551711A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:To remarkably simplify the 4 wire type comminication drive unit, by closing and opening the communication path every 2 wire type communication path switch group, through the operation of the drive level selection circuit in time sharing and the drive of the X and Y drive line every operation. CONSTITUTION:The drive bus selection circuits 5, 6 selecting respectively one of the X drive line 8, Y drive line 9, and the first and second communication path switch grid 7, the first or second communication path grid group 7 are connected to the switch drive circuits 1, 2 provided in common with the grid group 7 via the drive level selection circuits 3 and 4 individually selected. Further, the circuits 3 and 4 are in time sharing operated as that the open and close of the communication path can be made every 2 wire type communication path switch grid group through the drive of the circuits 1 and 2 every operation of the circuits 3 and 4. Thus, the 4 wire type communication path drive unit can remarkably be simplified.
JP7375678A 1978-06-20 1978-06-20 Communication path drive system of 4 wire type Pending JPS551711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7375678A JPS551711A (en) 1978-06-20 1978-06-20 Communication path drive system of 4 wire type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7375678A JPS551711A (en) 1978-06-20 1978-06-20 Communication path drive system of 4 wire type

Publications (1)

Publication Number Publication Date
JPS551711A true JPS551711A (en) 1980-01-08

Family

ID=13527394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7375678A Pending JPS551711A (en) 1978-06-20 1978-06-20 Communication path drive system of 4 wire type

Country Status (1)

Country Link
JP (1) JPS551711A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115308A (en) * 1974-07-30 1976-02-06 Oki Electric Ind Co Ltd SUITSUCHIKU DOHO SHIKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115308A (en) * 1974-07-30 1976-02-06 Oki Electric Ind Co Ltd SUITSUCHIKU DOHO SHIKI

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