JPS6436175A - Video intermediate frequency signal processing circuit - Google Patents
Video intermediate frequency signal processing circuitInfo
- Publication number
- JPS6436175A JPS6436175A JP19170087A JP19170087A JPS6436175A JP S6436175 A JPS6436175 A JP S6436175A JP 19170087 A JP19170087 A JP 19170087A JP 19170087 A JP19170087 A JP 19170087A JP S6436175 A JPS6436175 A JP S6436175A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- video intermediate
- pass filter
- band pass
- frequency signal
- 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
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To suppress abnormity of an AFT output voltage due to a characteristic of a band pass filter by using the band pass filter having a selectivity symmetrical with respect to the center frequency of a video intermediate frequency signal. CONSTITUTION:The video intermediate frequency signal passes through a band pass filter 1a having a symmetrical selectivity with respect to its center frequency and its output is led to an automatic frequency control circuit 3. Thus, the signal not affected by the characteristic of the band pass filter is given to an automatic frequency control circuit and the abnormity in an output of the automatic frequency control circuit due to a minute input or noise at no input is suppressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19170087A JPS6436175A (en) | 1987-07-30 | 1987-07-30 | Video intermediate frequency signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19170087A JPS6436175A (en) | 1987-07-30 | 1987-07-30 | Video intermediate frequency signal processing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6436175A true JPS6436175A (en) | 1989-02-07 |
Family
ID=16279023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19170087A Pending JPS6436175A (en) | 1987-07-30 | 1987-07-30 | Video intermediate frequency signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6436175A (en) |
-
1987
- 1987-07-30 JP JP19170087A patent/JPS6436175A/en active Pending
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