JPS6485429A - Noise reducing circuit - Google Patents
Noise reducing circuitInfo
- Publication number
- JPS6485429A JPS6485429A JP24305987A JP24305987A JPS6485429A JP S6485429 A JPS6485429 A JP S6485429A JP 24305987 A JP24305987 A JP 24305987A JP 24305987 A JP24305987 A JP 24305987A JP S6485429 A JPS6485429 A JP S6485429A
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- coefficient
- subtractor
- output component
- noise
- 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
- Noise Elimination (AREA)
Abstract
PURPOSE:To obtain an output signal with desired noise reduction and less waveform deterioration by providing noise reduction operation comprising a feedback means to a feed forward means of the noise reduction used in a conventional system. CONSTITUTION:A limiter 10 is a limit means limiting the amplitude of an output component Sc' of a subtractor 3, a coefficient device 11 is a coefficient means setting an output component of the limiter 10 to a coefficient K3, and a subtractor 12 subtracts an output component from the coefficient device 11 from the input original signal (video signal) Si from an input terminal 1. In adding the circuits as above, an LPF 2 being an extraction means receives an output signal of the subtractor 12. Thus, a large noise reduction effect comes from the low frequency side, and the residual noise just after edge at large amplitude is reduced and high waveform reproducibility is attained by the noise circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24305987A JPS6485429A (en) | 1987-09-28 | 1987-09-28 | Noise reducing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24305987A JPS6485429A (en) | 1987-09-28 | 1987-09-28 | Noise reducing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6485429A true JPS6485429A (en) | 1989-03-30 |
Family
ID=17098190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24305987A Pending JPS6485429A (en) | 1987-09-28 | 1987-09-28 | Noise reducing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6485429A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5564095A (en) * | 1994-09-30 | 1996-10-08 | Comsat Corporation | RFI suppression by cascading nonlinear devices |
-
1987
- 1987-09-28 JP JP24305987A patent/JPS6485429A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5564095A (en) * | 1994-09-30 | 1996-10-08 | Comsat Corporation | RFI suppression by cascading nonlinear devices |
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