JPS6412276A - Frequency discrimination circuit - Google Patents

Frequency discrimination circuit

Info

Publication number
JPS6412276A
JPS6412276A JP16694187A JP16694187A JPS6412276A JP S6412276 A JPS6412276 A JP S6412276A JP 16694187 A JP16694187 A JP 16694187A JP 16694187 A JP16694187 A JP 16694187A JP S6412276 A JPS6412276 A JP S6412276A
Authority
JP
Japan
Prior art keywords
discrimination
signal
error
comparator
frequency
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
JP16694187A
Other languages
Japanese (ja)
Other versions
JPH0625782B2 (en
Inventor
Shigenori Ishii
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP16694187A priority Critical patent/JPH0625782B2/en
Publication of JPS6412276A publication Critical patent/JPS6412276A/en
Publication of JPH0625782B2 publication Critical patent/JPH0625782B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To perform discrimination accurately and in a short time by setting an error limit value corresponding to frequency set to frequency setting part and to compare this error limit value with the count value to perform operation of discrimination signal. CONSTITUTION:In an operation processing means 5 of frequency discrimination circuit, a latch signal for suppressing operation processing which is output from a timer 4 allows a comparator 5c to be latched. The latch of the comparator 5c is released when the measuring time ends and the timer 4 is exceeded. At this time, if the count value of error pulses output from an error counter 5b is greater than the limit value output from a decoder 5a of count value of error pulses, a discrimination signal is obtained, indicating that a signal which is different from the frequency set from the comparator 5c is being input. Thus, this discrimination signal allows discrimination accurately and in a short time.
JP16694187A 1987-07-06 1987-07-06 Frequency discrimination circuit Expired - Fee Related JPH0625782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16694187A JPH0625782B2 (en) 1987-07-06 1987-07-06 Frequency discrimination circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16694187A JPH0625782B2 (en) 1987-07-06 1987-07-06 Frequency discrimination circuit

Publications (2)

Publication Number Publication Date
JPS6412276A true JPS6412276A (en) 1989-01-17
JPH0625782B2 JPH0625782B2 (en) 1994-04-06

Family

ID=15840478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16694187A Expired - Fee Related JPH0625782B2 (en) 1987-07-06 1987-07-06 Frequency discrimination circuit

Country Status (1)

Country Link
JP (1) JPH0625782B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126798A (en) * 1991-09-30 1992-06-30 Eastman Kodak Company Cleaning assembly for an electrostatographic reproduction apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0980169A (en) * 1995-09-18 1997-03-28 Seikosha Co Ltd Internal illumination type clock device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126798A (en) * 1991-09-30 1992-06-30 Eastman Kodak Company Cleaning assembly for an electrostatographic reproduction apparatus

Also Published As

Publication number Publication date
JPH0625782B2 (en) 1994-04-06

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