JPS5661007A - Switching system for recording and reproduction - Google Patents

Switching system for recording and reproduction

Info

Publication number
JPS5661007A
JPS5661007A JP13702479A JP13702479A JPS5661007A JP S5661007 A JPS5661007 A JP S5661007A JP 13702479 A JP13702479 A JP 13702479A JP 13702479 A JP13702479 A JP 13702479A JP S5661007 A JPS5661007 A JP S5661007A
Authority
JP
Japan
Prior art keywords
recording
reproduction
signal
head
switch
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
JP13702479A
Other languages
Japanese (ja)
Inventor
Shiro Nakagawa
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP13702479A priority Critical patent/JPS5661007A/en
Publication of JPS5661007A publication Critical patent/JPS5661007A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams

Abstract

PURPOSE:To switch recording and reproduction simply in excellent manner while connecting recording and reproducing amplifiers to a head in common use for recording and reproduction, by blocking a fine signal with a nonlinear element and switching an FET through the control of the potential of source. CONSTITUTION:When a switch 8 is connected to a contact 9, the first stage N type FETS of a reproducing amplfier 2 is cut off because the source is at high potential to avoid a recording signal from being flowed to the amplifier, which is fed to a head 1 in common use for recording and reproduction via a nonlinear element that blocks a weak signal in antiparallel connection of diodes d1, d2. When the switch 8 is connected to a contact 10, an FET5 is conductive to apply the reproduction signal from the head 1 to the amplifier 2, and weak reproduction signal and noise interrupted at the element 6 do not flow to a recording amplifer. Accordingly, the switching of recording and reproduction can simply be made in excellent manner, while connecting the recording and reproducing amplifiers to the head in common use for recording and reproduction.
JP13702479A 1979-10-25 1979-10-25 Switching system for recording and reproduction Pending JPS5661007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13702479A JPS5661007A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13702479A JPS5661007A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Publications (1)

Publication Number Publication Date
JPS5661007A true JPS5661007A (en) 1981-05-26

Family

ID=15189048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13702479A Pending JPS5661007A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Country Status (1)

Country Link
JP (1) JPS5661007A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101310U (en) * 1981-12-29 1983-07-09 ソニー株式会社 Input/output circuit of magnetic recording/reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101310U (en) * 1981-12-29 1983-07-09 ソニー株式会社 Input/output circuit of magnetic recording/reproducing device
JPH0222803Y2 (en) * 1981-12-29 1990-06-20

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