JPS54114921A - Noise reduction unit - Google Patents
Noise reduction unitInfo
- Publication number
- JPS54114921A JPS54114921A JP2225278A JP2225278A JPS54114921A JP S54114921 A JPS54114921 A JP S54114921A JP 2225278 A JP2225278 A JP 2225278A JP 2225278 A JP2225278 A JP 2225278A JP S54114921 A JPS54114921 A JP S54114921A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- signal
- band signal
- variable non
- linear 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.)
- Pending
Links
Abstract
PURPOSE: To obtain the video signal reduced in noise, by rejecting noise from the high band signal introduced from the disc via the variable non-linear circuit and adding it with the low band signal.
CONSTITUTION: The signal from the pick up 20 sliding with the disk is separated into the high and low band signals with the frequency separation circuit 22. The high band signal is fed to the variable non-linear circuit 24 where the noise is rejected and it is synthesized with the low band signal. The variable non-linear circuit has insensitive zone of output ot the input and noise is rejected by adjusting the dead band with the detection signal of the pick up position.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2225278A JPS54114921A (en) | 1978-02-28 | 1978-02-28 | Noise reduction unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2225278A JPS54114921A (en) | 1978-02-28 | 1978-02-28 | Noise reduction unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54114921A true JPS54114921A (en) | 1979-09-07 |
Family
ID=12077587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2225278A Pending JPS54114921A (en) | 1978-02-28 | 1978-02-28 | Noise reduction unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54114921A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057714A (en) * | 1973-09-21 | 1975-05-20 | ||
JPS5279747A (en) * | 1975-12-26 | 1977-07-05 | Sony Corp | Noise removal circuit |
-
1978
- 1978-02-28 JP JP2225278A patent/JPS54114921A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5057714A (en) * | 1973-09-21 | 1975-05-20 | ||
JPS5279747A (en) * | 1975-12-26 | 1977-07-05 | Sony Corp | Noise removal circuit |
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