JPH046822U - - Google Patents

Info

Publication number
JPH046822U
JPH046822U JP1990044298U JP4429890U JPH046822U JP H046822 U JPH046822 U JP H046822U JP 1990044298 U JP1990044298 U JP 1990044298U JP 4429890 U JP4429890 U JP 4429890U JP H046822 U JPH046822 U JP H046822U
Authority
JP
Japan
Prior art keywords
track
reproducing
recording
exclusively
information reproducing
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
JP1990044298U
Other languages
English (en)
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 filed Critical
Priority to JP1990044298U priority Critical patent/JPH046822U/ja
Publication of JPH046822U publication Critical patent/JPH046822U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す上面図、第２
図は従来の一例を示す上面図である。 １，１１……情報再生専用トラツク、２，１２
……記録再生用トラツク。

Claims (1)

    【実用新案登録請求の範囲】
  1. ピツト列として予じめ書き込まれた情報再生専
    用トラツクと、トラツキング用グルーブが形成さ
    れ少なくとも記録および再生が可能なトラツクが
    前記情報再生専用トラツクと２重のスパイラルと
    して構成されている記録再生用トラツクとを含む
    ことを特徴とする光デイスク基板。
JP1990044298U 1990-04-25 1990-04-25 Pending JPH046822U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990044298U JPH046822U (ja) 1990-04-25 1990-04-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990044298U JPH046822U (ja) 1990-04-25 1990-04-25

Publications (1)

Publication Number Publication Date
JPH046822U true JPH046822U (ja) 1992-01-22

Family

ID=31557471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990044298U Pending JPH046822U (ja) 1990-04-25 1990-04-25

Country Status (1)

Country Link
JP (1) JPH046822U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05135362A (ja) * 1991-11-14 1993-06-01 Hitachi Ltd 情報の記録用部材及び記録装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05135362A (ja) * 1991-11-14 1993-06-01 Hitachi Ltd 情報の記録用部材及び記録装置

Similar Documents

Publication Publication Date Title
JPH046822U (ja)
JPH025111U (ja)
JPH046821U (ja)
JPH035218U (ja)
JPS6255226U (ja)
JPS6277497U (ja)
JPS61153128U (ja)
JPS6080585U (ja) 光学記録再生用区域を有するカセツトハ−フ
JPS6222721U (ja)
JPH032481U (ja)
JPS616988U (ja) デイスクプレ−ヤ−
JPH03121511U (ja)
JPS6263886U (ja)
JPS61203474U (ja)
JPS5843636U (ja) 光学式記録再生デイスク
JPS6316609U (ja)
JPS6273385U (ja)
JPS61163369U (ja)
JPS61114587U (ja)
JPS6064425U (ja) 記録消去できるデイスク
JPS5843634U (ja) 記録再生用ピツクアツプ
JPH0175301U (ja)
JPS61163322U (ja)
JPH0328577U (ja)
JPH01165917U (ja)