JPS55159218A - Clock pulse generator - Google Patents

Clock pulse generator

Info

Publication number
JPS55159218A
JPS55159218A JP6554479A JP6554479A JPS55159218A JP S55159218 A JPS55159218 A JP S55159218A JP 6554479 A JP6554479 A JP 6554479A JP 6554479 A JP6554479 A JP 6554479A JP S55159218 A JPS55159218 A JP S55159218A
Authority
JP
Japan
Prior art keywords
clock pulse
circuit
switching
pulse
failure
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
JP6554479A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kato
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 JP6554479A priority Critical patent/JPS55159218A/en
Publication of JPS55159218A publication Critical patent/JPS55159218A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE: To avoide unstable hardware operation, by checking the pulse waveform every given time interval and switching the pulse into spare clock pulse immediately, if the waveform is not satisfactory to the standards.
CONSTITUTION: Assuming that the clock pulse produced at a crystal oscillator 1 and a clock pulse producing circuit 2 is fed to each module of the system via a switching circuit 5 and a distributing circuit 6. When the clock pulse sample pickup signal 8 is incoming, the clock pulse at that time is picked up and the clock pulse width monitor circuit 7 is operated for the monitor. If any failure is detected to the clock pulse width, the clock pulse switching signal 9 is fed to the clock pulse switching circuit 5 to switch the clock pulse in failure to spare normal clock pulse.
COPYRIGHT: (C)1980,JPO&Japio
JP6554479A 1979-05-29 1979-05-29 Clock pulse generator Pending JPS55159218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6554479A JPS55159218A (en) 1979-05-29 1979-05-29 Clock pulse generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6554479A JPS55159218A (en) 1979-05-29 1979-05-29 Clock pulse generator

Publications (1)

Publication Number Publication Date
JPS55159218A true JPS55159218A (en) 1980-12-11

Family

ID=13290059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6554479A Pending JPS55159218A (en) 1979-05-29 1979-05-29 Clock pulse generator

Country Status (1)

Country Link
JP (1) JPS55159218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279183A (en) * 1987-04-13 1988-11-16 シーメンス、アクチエンゲゼルシヤフト Integrated circuit device for monitoring simultaneously stacked oscillator
JPS6480184A (en) * 1987-09-22 1989-03-27 Nippon Denki Home Electronics Clock switching circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912746A (en) * 1972-05-12 1974-02-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912746A (en) * 1972-05-12 1974-02-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279183A (en) * 1987-04-13 1988-11-16 シーメンス、アクチエンゲゼルシヤフト Integrated circuit device for monitoring simultaneously stacked oscillator
JPS6480184A (en) * 1987-09-22 1989-03-27 Nippon Denki Home Electronics Clock switching circuit

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