JPS57200956A - Electrostatic capacity type information reproducing device - Google Patents
Electrostatic capacity type information reproducing deviceInfo
- Publication number
- JPS57200956A JPS57200956A JP8667181A JP8667181A JPS57200956A JP S57200956 A JPS57200956 A JP S57200956A JP 8667181 A JP8667181 A JP 8667181A JP 8667181 A JP8667181 A JP 8667181A JP S57200956 A JPS57200956 A JP S57200956A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrostatic capacity
- information
- type information
- reproducing device
- 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
- G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
- G11B9/07—Heads for reproducing capacitive information
Abstract
PURPOSE:To efficiently reproduce information, by providing at least 2 conductive electrodes constituted so as to be opposed to each other, on an information track in which information has been recorded, and detecting the information as a variation of electrostatic capacity between the conducive electrodes. CONSTITUTION:A disk 401 is formed by a dielectric made of vinyl chloride, etc., and on a reproducing stylus 102 made of a diamond, a sapphire, etc., the first electrode 105 constituted of a dielectric and the second electrode 402 are provided in parallel in the advancing direction of an information track through an insulating layer 403. Between the first electrode 105 and the second electrode 402, electrostatic capacity C1 is generated, but a value of this electrostatic capacity 404 is varied depending on whether a bit 106 exists or not. A variation of the electrostatic capacity is detected efficiently by connecting the first electrode 105 and the second electrode 402 across the inductance, and forming a resonance circuit whose Q is high. In this way, information being high in its efficiency and low in a noise can be reproduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8667181A JPS57200956A (en) | 1981-06-04 | 1981-06-04 | Electrostatic capacity type information reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8667181A JPS57200956A (en) | 1981-06-04 | 1981-06-04 | Electrostatic capacity type information reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57200956A true JPS57200956A (en) | 1982-12-09 |
Family
ID=13893492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8667181A Pending JPS57200956A (en) | 1981-06-04 | 1981-06-04 | Electrostatic capacity type information reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200956A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1369864A2 (en) * | 2002-06-06 | 2003-12-10 | Pioneer Corporation | Dielectric recording/reproducing head, dielectric recording medium unit, and dielectric recording/reproducing apparatus |
| EP1752981A1 (en) * | 2002-07-09 | 2007-02-14 | Pioneer Electronic Corporation | Dielectric recording/reproducing head and tracking method |
| US7218600B2 (en) | 2001-09-10 | 2007-05-15 | Pioneer Corporation | Dielectric constant measuring apparatus, dielectric constant measuring method, and information recording/reproducing apparatus |
| US7221639B2 (en) | 2002-07-09 | 2007-05-22 | Pioneer Corporation | Pickup device |
| US7227830B2 (en) | 2002-09-11 | 2007-06-05 | Yasuo Cho | Dielectric recording apparatus, dielectric reproducing apparatus, and dielectric recording / reproducing apparatus |
| US7242661B2 (en) | 2001-09-10 | 2007-07-10 | Pioneer Corporation | Dielectric information apparatus, tape-like medium recording/reproducing apparatus and disc-like medium recording/reproducing apparatus |
| US7283453B2 (en) | 2002-07-09 | 2007-10-16 | Pioneer Corporation | Recording/reproducing head |
| US7336590B2 (en) | 2002-09-11 | 2008-02-26 | Yasuo Cho | Dielectric reproducing apparatus, dielectric recording apparatus, and dielectric recording/reproducing apparatus |
| US7385901B2 (en) | 2003-06-12 | 2008-06-10 | Yasuo Cho | Data recording/reproducing apparatus and method using needle-shaped member |
| US7590040B2 (en) | 2003-08-25 | 2009-09-15 | Yasuo Cho | Signal detecting method and apparatus and information reproducing apparatus and method |
-
1981
- 1981-06-04 JP JP8667181A patent/JPS57200956A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7218600B2 (en) | 2001-09-10 | 2007-05-15 | Pioneer Corporation | Dielectric constant measuring apparatus, dielectric constant measuring method, and information recording/reproducing apparatus |
| US7242661B2 (en) | 2001-09-10 | 2007-07-10 | Pioneer Corporation | Dielectric information apparatus, tape-like medium recording/reproducing apparatus and disc-like medium recording/reproducing apparatus |
| EP1369864A2 (en) * | 2002-06-06 | 2003-12-10 | Pioneer Corporation | Dielectric recording/reproducing head, dielectric recording medium unit, and dielectric recording/reproducing apparatus |
| EP1369864A3 (en) * | 2002-06-06 | 2004-10-13 | Pioneer Corporation | Dielectric recording/reproducing head, dielectric recording medium unit, and dielectric recording/reproducing apparatus |
| EP1752981A1 (en) * | 2002-07-09 | 2007-02-14 | Pioneer Electronic Corporation | Dielectric recording/reproducing head and tracking method |
| US7221639B2 (en) | 2002-07-09 | 2007-05-22 | Pioneer Corporation | Pickup device |
| US7283453B2 (en) | 2002-07-09 | 2007-10-16 | Pioneer Corporation | Recording/reproducing head |
| US7227830B2 (en) | 2002-09-11 | 2007-06-05 | Yasuo Cho | Dielectric recording apparatus, dielectric reproducing apparatus, and dielectric recording / reproducing apparatus |
| US7336590B2 (en) | 2002-09-11 | 2008-02-26 | Yasuo Cho | Dielectric reproducing apparatus, dielectric recording apparatus, and dielectric recording/reproducing apparatus |
| US7385901B2 (en) | 2003-06-12 | 2008-06-10 | Yasuo Cho | Data recording/reproducing apparatus and method using needle-shaped member |
| US8004948B2 (en) | 2003-06-12 | 2011-08-23 | Yasuo Cho | Data recording / reproducing apparatus and method using needle-shaped member |
| US7590040B2 (en) | 2003-08-25 | 2009-09-15 | Yasuo Cho | Signal detecting method and apparatus and information reproducing apparatus and method |
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