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JPS55160862A - System for detecting synchronization shift of periodic signal - Google Patents

System for detecting synchronization shift of periodic signal

Info

Publication number
JPS55160862A
JPS55160862A JP6753979A JP6753979A JPS55160862A JP S55160862 A JPS55160862 A JP S55160862A JP 6753979 A JP6753979 A JP 6753979A JP 6753979 A JP6753979 A JP 6753979A JP S55160862 A JPS55160862 A JP S55160862A
Authority
JP
Japan
Prior art keywords
periodic signal
synchronization shift
counters
counts
counter
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.)
Granted
Application number
JP6753979A
Other languages
Japanese (ja)
Other versions
JPS5838751B2 (en
Inventor
Masamitsu Miyazaki
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP6753979A priority Critical patent/JPS5838751B2/en
Publication of JPS55160862A publication Critical patent/JPS55160862A/en
Publication of JPS5838751B2 publication Critical patent/JPS5838751B2/en
Expired legal-status Critical Current

Links

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  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE: To detect the frequency of synchronization shift by previously setting the number of counts of two counters and by comparing the results counted every set number with each other when the contents of two counters are compared with each other to detect the synchronization shift.
CONSTITUTION: The first counter 7 that counts the number of pulses of a periodic signal and the second counter 8 that compares the periodic signal with a reference signal and counts only the number of pulses that synchronizes with the reference signal are provided. The number of counts of the first and second counters 7, 8 is previously set, both contents counter every set number are compared with each other, and when both contents are not in agreement, a disagreement signal is issued to stop operations of the first and second counters 7, 8.
COPYRIGHT: (C)1980,JPO&Japio
JP6753979A 1979-06-01 1979-06-01 Periodic signal synchronization detection method Expired JPS5838751B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6753979A JPS5838751B2 (en) 1979-06-01 1979-06-01 Periodic signal synchronization detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6753979A JPS5838751B2 (en) 1979-06-01 1979-06-01 Periodic signal synchronization detection method

Publications (2)

Publication Number Publication Date
JPS55160862A true JPS55160862A (en) 1980-12-15
JPS5838751B2 JPS5838751B2 (en) 1983-08-25

Family

ID=13347872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6753979A Expired JPS5838751B2 (en) 1979-06-01 1979-06-01 Periodic signal synchronization detection method

Country Status (1)

Country Link
JP (1) JPS5838751B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0230214A (en) * 1988-07-20 1990-01-31 Nec Corp Phase comparing circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174595U (en) * 1984-04-27 1985-11-19 佐久川　章一 Spherical decoration in spherical smoking devices
JPS6457234A (en) * 1987-08-28 1989-03-03 J S Shoko Kk Method for ornamenting spectacle frame or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0230214A (en) * 1988-07-20 1990-01-31 Nec Corp Phase comparing circuit

Also Published As

Publication number Publication date
JPS5838751B2 (en) 1983-08-25

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