JPS5661008A - Switching system for recording and reproduction - Google Patents

Switching system for recording and reproduction

Info

Publication number
JPS5661008A
JPS5661008A JP13702579A JP13702579A JPS5661008A JP S5661008 A JPS5661008 A JP S5661008A JP 13702579 A JP13702579 A JP 13702579A JP 13702579 A JP13702579 A JP 13702579A JP S5661008 A JPS5661008 A JP S5661008A
Authority
JP
Japan
Prior art keywords
recording
signal
reproduction
reproducing
amplifier
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
JP13702579A
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 JP13702579A priority Critical patent/JPS5661008A/en
Publication of JPS5661008A publication Critical patent/JPS5661008A/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 controlling a FET with a negative bias signal and blocking a fine signal with a nonlinear element. CONSTITUTION:A recording signal subjected to a negative bias at a bias circuit 7 is fed to a head 1 in common use for recording and reproduction via a nonlinear element 6 which blocks a fine signal. This negative recording signal turns off the first stage n type FET 5 of a reproducing amplifier 2 to avoid the recording signal not flowing to the amplifier 2. On the other hand, a reproducing signal fed to the amplifier 2 from the head 1 is blocked together with noise at the element 6, because they are weak, and they are not flowed to a recording amplifier 3, allowing to switch the recording/reproducing state simply in excellent manner while connecting the recording/reproducing amplifiers to the head in common use for recording/reproduction.
JP13702579A 1979-10-25 1979-10-25 Switching system for recording and reproduction Pending JPS5661008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13702579A JPS5661008A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13702579A JPS5661008A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Publications (1)

Publication Number Publication Date
JPS5661008A true JPS5661008A (en) 1981-05-26

Family

ID=15189074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13702579A Pending JPS5661008A (en) 1979-10-25 1979-10-25 Switching system for recording and reproduction

Country Status (1)

Country Link
JP (1) JPS5661008A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533965A (en) * 1984-04-18 1985-08-06 General Signal Corporation Magnetic read/write circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533965A (en) * 1984-04-18 1985-08-06 General Signal Corporation Magnetic read/write circuit

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