JPS54101610A - Clock supply system - Google Patents

Clock supply system

Info

Publication number
JPS54101610A
JPS54101610A JP812178A JP812178A JPS54101610A JP S54101610 A JPS54101610 A JP S54101610A JP 812178 A JP812178 A JP 812178A JP 812178 A JP812178 A JP 812178A JP S54101610 A JPS54101610 A JP S54101610A
Authority
JP
Japan
Prior art keywords
clocks
lead
clock
line
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.)
Pending
Application number
JP812178A
Other languages
Japanese (ja)
Inventor
Iwamasa Nishikado
Toshihiko Nakayama
Masato Eguchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP812178A priority Critical patent/JPS54101610A/en
Publication of JPS54101610A publication Critical patent/JPS54101610A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To simplify the supply source of clocks by extracting clocks transmitted on a line and using them as clocks in a stored program control-type time division exchange. CONSTITUTION:Clocks from line 3 are extracted by terminal circuit 4 and are sent to clock route selection circuit 6 through lead 5. Clock route selection circuit 6 determines a line whose clocks should be used and transmits the determined result to clock generation circuit 14 through lead 7. Clock generation circuit 14 generates various kinds of timing clock and supplies clocks to switch part 1 and processing part 2 through lead 9 and lead 12.
JP812178A 1978-01-27 1978-01-27 Clock supply system Pending JPS54101610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP812178A JPS54101610A (en) 1978-01-27 1978-01-27 Clock supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP812178A JPS54101610A (en) 1978-01-27 1978-01-27 Clock supply system

Publications (1)

Publication Number Publication Date
JPS54101610A true JPS54101610A (en) 1979-08-10

Family

ID=11684447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP812178A Pending JPS54101610A (en) 1978-01-27 1978-01-27 Clock supply system

Country Status (1)

Country Link
JP (1) JPS54101610A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56170633U (en) * 1980-05-21 1981-12-16
JPS58138159A (en) * 1982-02-10 1983-08-16 Fujitsu Ltd Timing generating system in terminal controller
JPH01151840A (en) * 1987-12-09 1989-06-14 Hitachi Ltd Digital subscriber line synchronization system
EP0456258A2 (en) * 1990-05-11 1991-11-13 Canon Kabushiki Kaisha Network synchronization unit for a telephone exchange

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56170633U (en) * 1980-05-21 1981-12-16
JPS617481Y2 (en) * 1980-05-21 1986-03-07
JPS58138159A (en) * 1982-02-10 1983-08-16 Fujitsu Ltd Timing generating system in terminal controller
JPS6322708B2 (en) * 1982-02-10 1988-05-12 Fujitsu Kk
JPH01151840A (en) * 1987-12-09 1989-06-14 Hitachi Ltd Digital subscriber line synchronization system
JP2510635B2 (en) * 1987-12-09 1996-06-26 株式会社日立製作所 Digital subscriber line synchronization system
EP0456258A2 (en) * 1990-05-11 1991-11-13 Canon Kabushiki Kaisha Network synchronization unit for a telephone exchange
US5331667A (en) * 1990-05-11 1994-07-19 Canon Kabushiki Kaisha Telephone exchange apparatus with communication line clocking

Similar Documents

Publication Publication Date Title
JPS53120158A (en) Power source control system
JPS54101610A (en) Clock supply system
JPS52125368A (en) Electronic watch
JPS5418238A (en) Automatic power supply throw-in device
JPS5315023A (en) Power supply control circuit system
JPS5416963A (en) Differetiating circuit
JPS5563446A (en) Clock control system in board inspection
JPS5248365A (en) Electronic timepiece
JPS5338928A (en) Power supply control system
JPS5338249A (en) Crystal oscillator circuit
JPS537268A (en) Time signalling timepiece
JPS5422139A (en) Retrial system
JPS53118682A (en) Electronic adjuster
JPS5426771A (en) Clock circuit
JPS5394962A (en) Pulse receiving circuit
JPS53114658A (en) Delay timer circuit
JPS5330370A (en) Electronic timepiece
JPS5418236A (en) Automatic power supply breaker
JPS53120344A (en) Information processing system
JPS51113133A (en) Protective relay system
JPS533134A (en) Timing generation method for memory
JPS5419149A (en) Cigital protective relay driving system
JPS56120240A (en) Line switcher
JPS5422074A (en) Switching control system
JPS53115487A (en) Electronic system sequence control device