JPS54114921A - Noise reduction unit - Google Patents

Noise reduction unit

Info

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
Application number
JP2225278A
Other languages
Japanese (ja)
Inventor
Koichi Minemura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2225278A priority Critical patent/JPS54114921A/en
Publication of JPS54114921A publication Critical patent/JPS54114921A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

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
JP2225278A 1978-02-28 1978-02-28 Noise reduction unit Pending JPS54114921A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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