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JPS57103132A - Recording information carrier and its recorder and reproducer - Google Patents

Recording information carrier and its recorder and reproducer

Info

Publication number
JPS57103132A
JPS57103132A JP55178268A JP17826880A JPS57103132A JP S57103132 A JPS57103132 A JP S57103132A JP 55178268 A JP55178268 A JP 55178268A JP 17826880 A JP17826880 A JP 17826880A JP S57103132 A JPS57103132 A JP S57103132A
Authority
JP
Japan
Prior art keywords
light
signal
polarization
plane
adjacent
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.)
Granted
Application number
JP55178268A
Other languages
Japanese (ja)
Other versions
JPH0263259B2 (en
Inventor
Seiji Nishino
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55178268A priority Critical patent/JPS57103132A/en
Publication of JPS57103132A publication Critical patent/JPS57103132A/en
Publication of JPH0263259B2 publication Critical patent/JPH0263259B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To increase recording density by exposing a recording material with optical anisotropy to the 45 deg.-different plane of polarization of a light source when information is recorded on adjacent tracks. CONSTITUTION:Since the signal of an information track is recorded by recording light having a plane of polarization as shown by an arrow 13, the reflectd light of a light spot S contains the signal component of an adjacent signal track. The adjacent information track, however, is recorded by recording light with a plane of polarization as shown by an arrow 14, so only a desired signal to be read is obtained through an analyzer located so that only a wave with a plane of polarization perpendicular to incident light is passed, and the signal of the adjacent track is cut off and never appears.
JP55178268A 1980-12-16 1980-12-16 Recording information carrier and its recorder and reproducer Granted JPS57103132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55178268A JPS57103132A (en) 1980-12-16 1980-12-16 Recording information carrier and its recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55178268A JPS57103132A (en) 1980-12-16 1980-12-16 Recording information carrier and its recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS57103132A true JPS57103132A (en) 1982-06-26
JPH0263259B2 JPH0263259B2 (en) 1990-12-27

Family

ID=16045507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55178268A Granted JPS57103132A (en) 1980-12-16 1980-12-16 Recording information carrier and its recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS57103132A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018825A (en) * 1983-07-12 1985-01-30 Canon Inc Optical recording and reproducing method
EP0436228A2 (en) * 1989-12-28 1991-07-10 Sanyo Electric Co., Ltd. Recording and reproducing methods
NL9301499A (en) * 1992-08-31 1994-03-16 Pioneer Electronic Corp Optical disc and device for playing it.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119517A (en) * 1974-02-12 1975-09-19
JPS51146803A (en) * 1975-05-22 1976-12-16 Philips Nv Data storage disk and writing and or reading device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119517A (en) * 1974-02-12 1975-09-19
JPS51146803A (en) * 1975-05-22 1976-12-16 Philips Nv Data storage disk and writing and or reading device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018825A (en) * 1983-07-12 1985-01-30 Canon Inc Optical recording and reproducing method
JPH0326456B2 (en) * 1983-07-12 1991-04-10 Canon Kk
EP0436228A2 (en) * 1989-12-28 1991-07-10 Sanyo Electric Co., Ltd. Recording and reproducing methods
NL9301499A (en) * 1992-08-31 1994-03-16 Pioneer Electronic Corp Optical disc and device for playing it.

Also Published As

Publication number Publication date
JPH0263259B2 (en) 1990-12-27

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