JPS6425355A - Optical disk medium - Google Patents

Optical disk medium

Info

Publication number
JPS6425355A
JPS6425355A JP18159787A JP18159787A JPS6425355A JP S6425355 A JPS6425355 A JP S6425355A JP 18159787 A JP18159787 A JP 18159787A JP 18159787 A JP18159787 A JP 18159787A JP S6425355 A JPS6425355 A JP S6425355A
Authority
JP
Japan
Prior art keywords
supplier
sector
optical disk
disk medium
user
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
JP18159787A
Other languages
Japanese (ja)
Inventor
Masamichi Sadakata
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP18159787A priority Critical patent/JPS6425355A/en
Publication of JPS6425355A publication Critical patent/JPS6425355A/en
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)

Abstract

PURPOSE:To enable a supplier to make the characteristic test of an optical disk medium which accompanies the process of writing to the data part of the sectors assigned for the supplier by forming the sector constituted by putting the information indicating whether the sector is for a user or the supplier to a header part and assuring the optional sector or track on the optical disk medium as the sector or track for the supplier. CONSTITUTION:The information discriminating whether the sector is for the user or the supplier is recorded into the discrimination header part preformatted for every sector, so that the supplier of the medium can use the tracks or the sectors of every other optional number. For example, a FLAG 4 is a pattern to discriminate whether this sector is for the user or the supplier. This pattern enables the supplier to make the characteristic test accompanying the writing test in arbitrarily dispersed places.
JP18159787A 1987-07-20 1987-07-20 Optical disk medium Pending JPS6425355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18159787A JPS6425355A (en) 1987-07-20 1987-07-20 Optical disk medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18159787A JPS6425355A (en) 1987-07-20 1987-07-20 Optical disk medium

Publications (1)

Publication Number Publication Date
JPS6425355A true JPS6425355A (en) 1989-01-27

Family

ID=16103592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18159787A Pending JPS6425355A (en) 1987-07-20 1987-07-20 Optical disk medium

Country Status (1)

Country Link
JP (1) JPS6425355A (en)

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