JPS57109140A - Signal recording and reproducing device - Google Patents

Signal recording and reproducing device

Info

Publication number
JPS57109140A
JPS57109140A JP18364480A JP18364480A JPS57109140A JP S57109140 A JPS57109140 A JP S57109140A JP 18364480 A JP18364480 A JP 18364480A JP 18364480 A JP18364480 A JP 18364480A JP S57109140 A JPS57109140 A JP S57109140A
Authority
JP
Japan
Prior art keywords
recording
films
turntable
medium
sides
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
JP18364480A
Other languages
Japanese (ja)
Inventor
Kenichi Sawazaki
Junichiro Ikeuchi
Shuzo Hirahara
Taiji Higashiyama
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 JP18364480A priority Critical patent/JPS57109140A/en
Publication of JPS57109140A publication Critical patent/JPS57109140A/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/08—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using electrostatic charge injection; Record carriers therefor

Abstract

PURPOSE:To double the amount of recorded information, by constituting a recording medium through the formation of insulated film having charge storage function sandwiching a semiconductor layer on both sides. CONSTITUTION:SiO2 films 3, 3' and Si3N4 films 4, 4' are laminated on both sides of a semiconductor layer 2 made of Si to constitute a recording medium 1. A recording medium 1 is fixed by a metallic fixture 10 on a metal-made turntable 5, the medium 1 is turned with the turntable 5, a recording signal voltage 7 is applied between a conductive head 6 and the turntable 5 to make recording for the SiO2 and Si3N4 films 3, 4. By turning upside back for the medium 1, recording is made to the films 3', 4'. Reproduction is also made for both sides alternately. Thus, the amount of recorded information is doubled.
JP18364480A 1980-12-24 1980-12-24 Signal recording and reproducing device Pending JPS57109140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18364480A JPS57109140A (en) 1980-12-24 1980-12-24 Signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18364480A JPS57109140A (en) 1980-12-24 1980-12-24 Signal recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS57109140A true JPS57109140A (en) 1982-07-07

Family

ID=16139391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18364480A Pending JPS57109140A (en) 1980-12-24 1980-12-24 Signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57109140A (en)

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