JPS5794947A - Recording and reproducing system - Google Patents

Recording and reproducing system

Info

Publication number
JPS5794947A
JPS5794947A JP17089480A JP17089480A JPS5794947A JP S5794947 A JPS5794947 A JP S5794947A JP 17089480 A JP17089480 A JP 17089480A JP 17089480 A JP17089480 A JP 17089480A JP S5794947 A JPS5794947 A JP S5794947A
Authority
JP
Japan
Prior art keywords
recording
signal
electrode
electret material
conductive substrate
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
JP17089480A
Other languages
Japanese (ja)
Inventor
Kenichi Sawazaki
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 JP17089480A priority Critical patent/JPS5794947A/en
Publication of JPS5794947A publication Critical patent/JPS5794947A/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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To improve recording and reproducing density by using a recording medium which contains an electret material holding electric polarization, by performing signal recording by polarizing the medium according to a recorded signal, and by achieving reproduction by utilizing variation in dielectric constant by the polarization. CONSTITUTION:On a conductive substrate 2 made of aluminum, etc., an electret material layer 3 made of, for example, ''Teflon '' or ''Mylar '' is provided to obtain a tapelike or discoid recording medium 1. When a digital signal D, such as a video signal and an audio signal, applied between a conductive substrate 2 and a recording electrode 4 has an enough voltage to polarize the electret material layer 3 completely, the polarization of a charging voltage by the charge application recording of the electret material is held semipermanently. An analog signal, when applied, is converted through an analog digital converter 5 into a digital signal, which is applied to a recording electrode 4. During reproduction, a reproduced signal is obtained by a reproducing electrode by utilizing variation in electrostatic capacity between the electrode and the conductive substrate 2.
JP17089480A 1980-12-05 1980-12-05 Recording and reproducing system Pending JPS5794947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17089480A JPS5794947A (en) 1980-12-05 1980-12-05 Recording and reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17089480A JPS5794947A (en) 1980-12-05 1980-12-05 Recording and reproducing system

Publications (1)

Publication Number Publication Date
JPS5794947A true JPS5794947A (en) 1982-06-12

Family

ID=15913284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17089480A Pending JPS5794947A (en) 1980-12-05 1980-12-05 Recording and reproducing system

Country Status (1)

Country Link
JP (1) JPS5794947A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205427A (en) * 1990-03-13 1993-08-13 Internatl Business Mach Corp <Ibm> Large-capacity storage medium in which track-position information is detected electrostatically

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205427A (en) * 1990-03-13 1993-08-13 Internatl Business Mach Corp <Ibm> Large-capacity storage medium in which track-position information is detected electrostatically

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