JPS6455970A - Noise reducing circuit - Google Patents
Noise reducing circuitInfo
- Publication number
- JPS6455970A JPS6455970A JP62213292A JP21329287A JPS6455970A JP S6455970 A JPS6455970 A JP S6455970A JP 62213292 A JP62213292 A JP 62213292A JP 21329287 A JP21329287 A JP 21329287A JP S6455970 A JPS6455970 A JP S6455970A
- Authority
- JP
- Japan
- Prior art keywords
- high pass
- amplitude
- subtractor
- signals
- input
- 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
Abstract
PURPOSE:To extend noise reduction effect on a low frequency area as the amplitude of an input signal becomes smaller by adjusting the amplitude of a high pass components in input signals which are extracted in a high pass filter and whose amplitude is limited in a limitter and applying negative feedback to the input terminal of video signals. CONSTITUTION:A coefficient unit 7 multiplies a high pass component Sd in which the signal components more than a limited level is removed, which are outputted from a limitter 3, by a coefficient value K2, i.e., 0<=K2<=1/B. A subtractor 8 subtracts a high pass component K2.Sd which the coefficient unit 7 has level-adjusted from the input video signal Si. A negative feedback circuit consists of the coefficient unit 7 and the subtractor 8. The output signals are inputted to an HPF1 and a subtractor 2. Thus, noise reduction effect much more than a conventional example can be obtained at the time of inputting the signals of small amplitude, which have much noise components.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62213292A JPS6455970A (en) | 1987-08-27 | 1987-08-27 | Noise reducing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62213292A JPS6455970A (en) | 1987-08-27 | 1987-08-27 | Noise reducing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6455970A true JPS6455970A (en) | 1989-03-02 |
Family
ID=16636703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62213292A Pending JPS6455970A (en) | 1987-08-27 | 1987-08-27 | Noise reducing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6455970A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006206162A (en) * | 2005-01-31 | 2006-08-10 | Yoshino Kogyosho Co Ltd | In-mold label and synthetic resin container with in-mold label |
JP2008030851A (en) * | 2006-07-31 | 2008-02-14 | Yoshino Kogyosho Co Ltd | Container with in-mold label, and manufacturing method therefor |
JP2014211703A (en) * | 2013-04-17 | 2014-11-13 | 富士ゼロックス株式会社 | Image processing apparatus, image processing program, and image reading apparatus |
-
1987
- 1987-08-27 JP JP62213292A patent/JPS6455970A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006206162A (en) * | 2005-01-31 | 2006-08-10 | Yoshino Kogyosho Co Ltd | In-mold label and synthetic resin container with in-mold label |
JP2008030851A (en) * | 2006-07-31 | 2008-02-14 | Yoshino Kogyosho Co Ltd | Container with in-mold label, and manufacturing method therefor |
JP2014211703A (en) * | 2013-04-17 | 2014-11-13 | 富士ゼロックス株式会社 | Image processing apparatus, image processing program, and image reading apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57121345A (en) | Pulse noise eliminating circuit | |
MY121575A (en) | Method for noise reduction | |
JPS6449303A (en) | Wide band mixer | |
CA2059580A1 (en) | Auto-Tuned Apparatus for Band-Pass Filter | |
JPS5717241A (en) | Dynamic emphasis circuit | |
JPS5475922A (en) | Pulse noise limiter circuit | |
JPS6455970A (en) | Noise reducing circuit | |
JPS6455971A (en) | Noise reducing circuit | |
JPS57210405A (en) | Noise reduction circuit | |
SE9603698D0 (en) | Method and apparatus for reducing quantization noise | |
JPS6485429A (en) | Noise reducing circuit | |
JPS5591220A (en) | Bass compensating circuit | |
EP0451283A4 (en) | Processing circuit for video signal | |
EP0201986A3 (en) | Intermodulation suppressing circuit | |
JPS5538709A (en) | Noise elimination circuit | |
JPS54118149A (en) | Comparator circuit | |
JPS56138328A (en) | Frequency multiplying circuit | |
JPS5459055A (en) | Variable attenuator to signals at specified frequency band | |
JPS5664508A (en) | Low-band compensating circuit | |
JPS56103511A (en) | Monolithic semiconductor integrated circuit | |
JPS6430400A (en) | Acoustic signal processing circuit | |
JPS57210406A (en) | Noise reduction circuit | |
JPS5724113A (en) | Digital filter device | |
JPS6464470A (en) | Filter for television picture | |
JPS6472302A (en) | Sound recording equalizer circuit |