JPS5650631A - Noise eliminating circuit - Google Patents
Noise eliminating circuitInfo
- Publication number
- JPS5650631A JPS5650631A JP12710079A JP12710079A JPS5650631A JP S5650631 A JPS5650631 A JP S5650631A JP 12710079 A JP12710079 A JP 12710079A JP 12710079 A JP12710079 A JP 12710079A JP S5650631 A JPS5650631 A JP S5650631A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- impulsive noise
- opened
- signal
- pass
- 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 secure an attenuation for the high-band component and then eliminate the impulsive noise, by holding the signal right before opening of the switch element which is opened and closed by the presence or absence of the HPF output and then applying the signal to the high input impedance circuit.
CONSTITUTION: The analog switch 2 is opened and closed in response to the presence or absence of the outputs of the HPF1 and HPL1 which extract the impulsive noise out of the input signal containing the impulsive noise, and makes the input signal pass through during closure of the switch. The pass signal right before opening the switch 2 is held by the capacitor 4 while the switch 2 is opened, and this holding voltage is delivered through the high input impedance circuit 3. In such constitution, the frequency characteristics can be improved since the input signal does not pass through the circuit which lowers the frequency characteristics, thus securing the sufficient attenuating function even to the impulsive noise of an extremely high frequency. In addition, both the LPF and the integrated circuit can be eliminated, requiring no use of a large-capacity capacitor which is disadvantageous to the package.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12710079A JPS5650631A (en) | 1979-09-29 | 1979-09-29 | Noise eliminating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12710079A JPS5650631A (en) | 1979-09-29 | 1979-09-29 | Noise eliminating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5650631A true JPS5650631A (en) | 1981-05-07 |
Family
ID=14951585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12710079A Pending JPS5650631A (en) | 1979-09-29 | 1979-09-29 | Noise eliminating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5650631A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6262861U (en) * | 1985-10-05 | 1987-04-18 |
-
1979
- 1979-09-29 JP JP12710079A patent/JPS5650631A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6262861U (en) * | 1985-10-05 | 1987-04-18 | ||
JPH0352128Y2 (en) * | 1985-10-05 | 1991-11-11 |
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