JPS55159218A - Clock pulse generator - Google Patents
Clock pulse generatorInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912746A (en) * | 1972-05-12 | 1974-02-04 |
-
1979
- 1979-05-29 JP JP6554479A patent/JPS55159218A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4912746A (en) * | 1972-05-12 | 1974-02-04 |
Cited By (2)
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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