×

Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk

  • US 6,128,388 A
  • Filed: 09/22/1999
  • Issued: 10/03/2000
  • Est. Priority Date: 10/09/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical disk comprising a plurality of sections (T1, T2, T3, . . . ) having a width of T, whereinsaid sections (T1, T2, T3, . . . ) have a width of T respectively and are formed in a circumferential direction in such region where main information is not recorded,a predetermined number corresponding to sub information, of said sections (B1, B2, B3, . . . ) are used as recording area of said sub information,a mark having stripe-like configuration in a radius direction is formed within each said section for said sub information and the width of said mark is equal to or smaller than half of said width of T.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×