JPS6412276A - Frequency discrimination circuit - Google Patents
Frequency discrimination circuitInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0980169A (en) * | 1995-09-18 | 1997-03-28 | Seikosha Co Ltd | Internal illumination type clock device |
-
1987
- 1987-07-06 JP JP16694187A patent/JPH0625782B2/en not_active Expired - Fee Related
Cited By (1)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |