JPS5250218A - Magnetic head selecting circuit - Google Patents

Magnetic head selecting circuit

Info

Publication number
JPS5250218A
JPS5250218A JP12532475A JP12532475A JPS5250218A JP S5250218 A JPS5250218 A JP S5250218A JP 12532475 A JP12532475 A JP 12532475A JP 12532475 A JP12532475 A JP 12532475A JP S5250218 A JPS5250218 A JP S5250218A
Authority
JP
Japan
Prior art keywords
selecting circuit
magnetic head
playback
head selecting
recording
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
JP12532475A
Other languages
Japanese (ja)
Inventor
Motoi Aoi
Yoshihisa Kamo
Yasuhiro Kato
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 JP12532475A priority Critical patent/JPS5250218A/en
Publication of JPS5250218A publication Critical patent/JPS5250218A/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • 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
    • G11B15/125—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 conditioned by the operating function of the apparatus

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:Swithching elements of several ohms in on-resistance are used in a head selecting circuit which selects one of a plurality of recording and playback head and connects it electrically to a recording or playback amplifier, whereby noise produced during playback is made small and an enclosure parallel to the input of the playback amplifier is made small.
JP12532475A 1975-10-20 1975-10-20 Magnetic head selecting circuit Pending JPS5250218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12532475A JPS5250218A (en) 1975-10-20 1975-10-20 Magnetic head selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12532475A JPS5250218A (en) 1975-10-20 1975-10-20 Magnetic head selecting circuit

Publications (1)

Publication Number Publication Date
JPS5250218A true JPS5250218A (en) 1977-04-22

Family

ID=14907284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12532475A Pending JPS5250218A (en) 1975-10-20 1975-10-20 Magnetic head selecting circuit

Country Status (1)

Country Link
JP (1) JPS5250218A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970522A (en) * 1982-10-15 1984-04-21 Matsushita Electric Works Ltd Two layer extrusion forming metal mold
US4665446A (en) * 1983-10-06 1987-05-12 Canon Kabushiki Kaisha Magnetic recording and reproducing apparatus
EP0598846A4 (en) * 1991-08-16 1994-04-14 Go Video Inc Rotary head amplifier.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970522A (en) * 1982-10-15 1984-04-21 Matsushita Electric Works Ltd Two layer extrusion forming metal mold
US4665446A (en) * 1983-10-06 1987-05-12 Canon Kabushiki Kaisha Magnetic recording and reproducing apparatus
EP0598846A4 (en) * 1991-08-16 1994-04-14 Go Video Inc Rotary head amplifier.
EP0598846A1 (en) * 1991-08-16 1994-06-01 Go-Video, Inc. Rotary head amplifier

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