JPS5724044A - Signal recording and reproducing system - Google Patents
Signal recording and reproducing systemInfo
- Publication number
- JPS5724044A JPS5724044A JP9855480A JP9855480A JPS5724044A JP S5724044 A JPS5724044 A JP S5724044A JP 9855480 A JP9855480 A JP 9855480A JP 9855480 A JP9855480 A JP 9855480A JP S5724044 A JPS5724044 A JP S5724044A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- layer
- erasion
- reproduction
- polarization
- 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
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 Recording Or Reproduction (AREA)
Abstract
PURPOSE:To reduce the background noise during reproduction, by erasing the recording information obtained by the polarization of a recording medium containing a ferrodielectric layer through the polarization carried out uniformly in a single direction by a DC erasion method. CONSTITUTION:A recording medium 1 is obtained by coating a ferrodielectric layer 3 of e.g. PbTiO3, etc. on the surface of a semiconductor layer 2 of a P type silicon substrate 4, etc. A recording head 5 is shifted relatively in the direction of an arrow mark, and at the same time a digital information signal voltage 6, for example, is applied to perform recording with the polarization. On the other hand, the change of the electrostatic capacity is detected for the medium 1 through a reproducing circuit 9 while giving a relative shift to a conductive reproduction head 8 along a recording track to perform a reproduction. In the erasion mode, a conductive erasion head 21 is made to touch the surface of the layer 3 and then shifted relatively along with application of a certain level of DC voltage 22. Thus a uniform polarization is given to the layer 3 to perform erasion. In such way, the background noise can be reduced during a reproduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9855480A JPS5724044A (en) | 1980-07-18 | 1980-07-18 | Signal recording and reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9855480A JPS5724044A (en) | 1980-07-18 | 1980-07-18 | Signal recording and reproducing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5724044A true JPS5724044A (en) | 1982-02-08 |
Family
ID=14222898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9855480A Pending JPS5724044A (en) | 1980-07-18 | 1980-07-18 | Signal recording and reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5724044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2761530A1 (en) * | 1997-04-01 | 1998-10-02 | Univ Geneve | ELECTRICAL OR ELECTRONIC COMPONENT, IN PARTICULAR ELECTRICAL OR ELECTRONIC CIRCUIT OR NON-VOLATILE MEMORY |
-
1980
- 1980-07-18 JP JP9855480A patent/JPS5724044A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2761530A1 (en) * | 1997-04-01 | 1998-10-02 | Univ Geneve | ELECTRICAL OR ELECTRONIC COMPONENT, IN PARTICULAR ELECTRICAL OR ELECTRONIC CIRCUIT OR NON-VOLATILE MEMORY |
| WO1998044498A1 (en) * | 1997-04-01 | 1998-10-08 | Universite De Geneve | Electric or electronic component and application as non volatile memory and device with surface acoustic waves |
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