JPS5457846A - Synchronous logic device - Google Patents

Synchronous logic device

Info

Publication number
JPS5457846A
JPS5457846A JP12358077A JP12358077A JPS5457846A JP S5457846 A JPS5457846 A JP S5457846A JP 12358077 A JP12358077 A JP 12358077A JP 12358077 A JP12358077 A JP 12358077A JP S5457846 A JPS5457846 A JP S5457846A
Authority
JP
Japan
Prior art keywords
clock
dissidence
logic device
counters
receiving
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
JP12358077A
Other languages
Japanese (ja)
Inventor
Mikiya Akagi
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12358077A priority Critical patent/JPS5457846A/en
Publication of JPS5457846A publication Critical patent/JPS5457846A/en
Pending legal-status Critical Current

Links

Landscapes

  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE: To detect the malfunction of a clock by providing circuits, which vary in state at every time when receiving a clock, to at least two places where a clock is distributed, and by comparing their states.
CONSTITUTION: Receiving clocks from clock generating circuits 1, respective distributors 2, 3 and 4 distribute them to respective flip-flops and also to one-bit counters 5, 6 and 7. Dissidence detection circuit 8 receives the state signal from the one-bit counter, so that when it detects the dissidence between counters, dissidence detection signal 30 will be sent out
COPYRIGHT: (C)1979,JPO&Japio
JP12358077A 1977-10-17 1977-10-17 Synchronous logic device Pending JPS5457846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12358077A JPS5457846A (en) 1977-10-17 1977-10-17 Synchronous logic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12358077A JPS5457846A (en) 1977-10-17 1977-10-17 Synchronous logic device

Publications (1)

Publication Number Publication Date
JPS5457846A true JPS5457846A (en) 1979-05-10

Family

ID=14864096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12358077A Pending JPS5457846A (en) 1977-10-17 1977-10-17 Synchronous logic device

Country Status (1)

Country Link
JP (1) JPS5457846A (en)

Similar Documents

Publication Publication Date Title
JPS5545151A (en) Detection circuit for vertical synchronizing signal
JPS5457846A (en) Synchronous logic device
JPS5263764A (en) Electronic watch with alarm
JPS53110436A (en) Logic circuit for asynchronous signal synchronization
JPS5414771A (en) Electronic watch with alarm
JPS5432040A (en) Clock detector circuit
JPS5347722A (en) Key input circuit
JPS55102952A (en) Mutual synchronization system
JPS532032A (en) Phase extraction circuit of burst signal
JPS5359400A (en) Annunciator
JPS5310467A (en) Electronic timepiece with multiple alarms
JPS5378743A (en) Multiplier
JPS5436143A (en) Data processor
JPS52144230A (en) C-mos initial reset circuit
JPS5313954A (en) Wristwatch with electronic computer
JPS5334441A (en) Falut processing circuit at single clock occurrence
JPS5523677A (en) Selection circuit for delay time
JPS52133235A (en) Judging circuit
JPS5436125A (en) Generator circuit for jitter-less pulse signal
JPS5459848A (en) Fault detecting device for subroutine action
JPS5431245A (en) Fault detection circuit
JPS5342776A (en) Alarm electronic watch
JPS5745742A (en) Signal transmitter
JPS5315164A (en) Electronic watch with alarm
JPS5442176A (en) Electronic watch