JPS6435773A - Signal frequency discriminating device - Google Patents
Signal frequency discriminating deviceInfo
- Publication number
- JPS6435773A JPS6435773A JP62190104A JP19010487A JPS6435773A JP S6435773 A JPS6435773 A JP S6435773A JP 62190104 A JP62190104 A JP 62190104A JP 19010487 A JP19010487 A JP 19010487A JP S6435773 A JPS6435773 A JP S6435773A
- Authority
- JP
- Japan
- Prior art keywords
- point
- amplifying circuits
- peak point
- dip
- comparing
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To extend a practical discriminating range and to prevent malfunctions by amplifying with a pair of synchronizing amplifying circuits having a resonance characteristic whose peak point and dip point are in an opposite relationship each other, and comparing a level. CONSTITUTION:Two natural frequency components represented by the respective modulation central frequencies of two types of frequency modulating luminance signals whose frequency bands are close are amplified by a pair of adjusting amplifying circuits 14 and 15 having one of the two natural frequencies as the peak point, the other as the dip point, and having the resonance characteristic whose peak point and dip point are in the opposite relationship, and by level-comparing the outputs of the same adjusting amplifying circuits 14 and 15 at a comparator, a signal frequency is discriminated. Thus, the practical discriminating range is secured in a maximum limit without using a band filter circuit, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62190104A JPS6435773A (en) | 1987-07-31 | 1987-07-31 | Signal frequency discriminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62190104A JPS6435773A (en) | 1987-07-31 | 1987-07-31 | Signal frequency discriminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6435773A true JPS6435773A (en) | 1989-02-06 |
Family
ID=16252443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62190104A Pending JPS6435773A (en) | 1987-07-31 | 1987-07-31 | Signal frequency discriminating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6435773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695129B2 (en) | 2012-04-20 | 2017-07-04 | Merial Inc. | Parasiticidal compositions comprising benzimidazole derivatives, methods and uses thereof |
-
1987
- 1987-07-31 JP JP62190104A patent/JPS6435773A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695129B2 (en) | 2012-04-20 | 2017-07-04 | Merial Inc. | Parasiticidal compositions comprising benzimidazole derivatives, methods and uses thereof |
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