JPS56124106A - Sound recording and reproducing switching circuit - Google Patents

Sound recording and reproducing switching circuit

Info

Publication number
JPS56124106A
JPS56124106A JP2654580A JP2654580A JPS56124106A JP S56124106 A JPS56124106 A JP S56124106A JP 2654580 A JP2654580 A JP 2654580A JP 2654580 A JP2654580 A JP 2654580A JP S56124106 A JPS56124106 A JP S56124106A
Authority
JP
Japan
Prior art keywords
sound recording
switch
circuit
signal
switching 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
JP2654580A
Other languages
Japanese (ja)
Inventor
Yasuo Kominami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2654580A priority Critical patent/JPS56124106A/en
Publication of JPS56124106A publication Critical patent/JPS56124106A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion

Abstract

PURPOSE:To switch sound recording and reproducing of the noise reduction circuit and switch the muting circuit by a three-position switch circuit in the sound recording and reproducing switching circuit having the noise reduction circuit. CONSTITUTION:At the sound recording time, the first and the second change-over switches are connected to point R, and the sound recording input signal is output to sound recording output terminal ROUT after compressed. When this compressed recording signal is reproduced, the first and the second switches are connected to contact P, and the high-band signal against the high-band noise is expanded in 1, and the high-band signal is reproduced to the original level. When the second switch 2' is switched to muting position M, signal components are muted through capacitor C4. By providing this second switch, the circuit is simplified, and the number of external terminals for making the monolithic IC is reduced.
JP2654580A 1980-03-05 1980-03-05 Sound recording and reproducing switching circuit Pending JPS56124106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2654580A JPS56124106A (en) 1980-03-05 1980-03-05 Sound recording and reproducing switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2654580A JPS56124106A (en) 1980-03-05 1980-03-05 Sound recording and reproducing switching circuit

Publications (1)

Publication Number Publication Date
JPS56124106A true JPS56124106A (en) 1981-09-29

Family

ID=12196469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2654580A Pending JPS56124106A (en) 1980-03-05 1980-03-05 Sound recording and reproducing switching circuit

Country Status (1)

Country Link
JP (1) JPS56124106A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830615B1 (en) * 1969-11-25 1973-09-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830615B1 (en) * 1969-11-25 1973-09-21

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