JPS5476210A - Noise reduction on-off device - Google Patents

Noise reduction on-off device

Info

Publication number
JPS5476210A
JPS5476210A JP14352777A JP14352777A JPS5476210A JP S5476210 A JPS5476210 A JP S5476210A JP 14352777 A JP14352777 A JP 14352777A JP 14352777 A JP14352777 A JP 14352777A JP S5476210 A JPS5476210 A JP S5476210A
Authority
JP
Japan
Prior art keywords
circuit
noise reduction
variable resistance
integrated circuit
electronic variable
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
JP14352777A
Other languages
Japanese (ja)
Inventor
Noriji Ito
Tadao Yoshida
Jun Ishii
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 JP14352777A priority Critical patent/JPS5476210A/en
Publication of JPS5476210A publication Critical patent/JPS5476210A/en
Pending legal-status Critical Current

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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE: To reduce the number of switches in the case of handling plural channels and improve reliabiability and economy by so arranging the device that the resistance value of an electronic variable resistance circuit may be controlled by DC voltage from the outside.
CONSTITUTION: In a noise reduction device, the one which has gone outside of an integrated circuit IC' out of the bisected outputs of a gain amplifier B is supplied directly to a gain amplifier C through an equalizer circuit EQ and arrangement is so made that the control signal input end C-IN of an electronic variable resistance circuit F is connected to the noise reduction ON-OFF circuit NC provided outside the integrated circuit IC'. If the noise reduction switch SWNR is set at the ON side, the noise reduction ON state is set and when it is set to the OFF side, the output of a rectifying circuit G is superposed to a DC power source VCC potential but the resistance value of the electronic variable resistance circuit F becomes approximately zero, thus the output from the main pass side only is derived from the output end OUT of the integrated circuit IC and the noise reduction OFF state is set.
COPYRIGHT: (C)1979,JPO&Japio
JP14352777A 1977-11-30 1977-11-30 Noise reduction on-off device Pending JPS5476210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14352777A JPS5476210A (en) 1977-11-30 1977-11-30 Noise reduction on-off device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14352777A JPS5476210A (en) 1977-11-30 1977-11-30 Noise reduction on-off device

Publications (1)

Publication Number Publication Date
JPS5476210A true JPS5476210A (en) 1979-06-18

Family

ID=15340805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14352777A Pending JPS5476210A (en) 1977-11-30 1977-11-30 Noise reduction on-off device

Country Status (1)

Country Link
JP (1) JPS5476210A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586614A (en) * 1981-07-06 1983-01-14 Pioneer Electronic Corp Tape noise reduction system of tape recorder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586614A (en) * 1981-07-06 1983-01-14 Pioneer Electronic Corp Tape noise reduction system of tape recorder
JPH0315276B2 (en) * 1981-07-06 1991-02-28 Paionia Kk

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