JPS5585176A - Noise suppression unit - Google Patents
Noise suppression unitInfo
- Publication number
- JPS5585176A JPS5585176A JP15978578A JP15978578A JPS5585176A JP S5585176 A JPS5585176 A JP S5585176A JP 15978578 A JP15978578 A JP 15978578A JP 15978578 A JP15978578 A JP 15978578A JP S5585176 A JPS5585176 A JP S5585176A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- phase detector
- noise
- detector
- circuit
- 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
Landscapes
- Picture Signal Circuits (AREA)
- Television Receiver Circuits (AREA)
- Noise Elimination (AREA)
Abstract
PURPOSE: To enable to constitute the circuit in DC coupling, by detecting noise from the output of phase detector.
CONSTITUTION: The first phase detector 4 operated at orthogonal phase to VIF signal, and the second phase detector 5 operates in-phase. Accordingly, video signal is obtained from the phase detector 5 and a given DC voltage not in response to the amplitude of VIF is obtained from the phase detector 4 according to the phase difference of two signals. Since RF impulsive noise can change the amplitude and phase of RF signal, DC voltage in response to the noise is produced at the output of the phase detector 4. Accordingly, the noise detector 7 can be coupled in DC to the phase detector and circuit integration of the circuit can be realized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15978578A JPS5585176A (en) | 1978-12-22 | 1978-12-22 | Noise suppression unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15978578A JPS5585176A (en) | 1978-12-22 | 1978-12-22 | Noise suppression unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5585176A true JPS5585176A (en) | 1980-06-26 |
JPS6223506B2 JPS6223506B2 (en) | 1987-05-23 |
Family
ID=15701211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15978578A Granted JPS5585176A (en) | 1978-12-22 | 1978-12-22 | Noise suppression unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5585176A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06509923A (en) * | 1992-06-12 | 1994-11-02 | サムスン エレクトロニクス カンパニー リミテッド | Noise reduction apparatus and method for television receivers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926244A (en) * | 1972-07-04 | 1974-03-08 | ||
JPS51100632A (en) * | 1975-03-03 | 1976-09-06 | Matsushita Electric Ind Co Ltd |
-
1978
- 1978-12-22 JP JP15978578A patent/JPS5585176A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4926244A (en) * | 1972-07-04 | 1974-03-08 | ||
JPS51100632A (en) * | 1975-03-03 | 1976-09-06 | Matsushita Electric Ind Co Ltd |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06509923A (en) * | 1992-06-12 | 1994-11-02 | サムスン エレクトロニクス カンパニー リミテッド | Noise reduction apparatus and method for television receivers |
Also Published As
Publication number | Publication date |
---|---|
JPS6223506B2 (en) | 1987-05-23 |
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