×

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 A OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK

  • US 6,757,391 B2
  • Filed: 02/20/2002
  • Issued: 06/29/2004
  • Est. Priority Date: 10/09/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A marking forming apparatus comprising:

  • marking forming means for applying a marking on a reflective film formed on an information signal area of an optical information storage medium;

    marking position detecting means for detecting a position of said marking; and

    position information writing means for converting at least said detected position or information concerning said detected position into a barcode, and for selectively irradiating laser light to said reflective film to write said barcode to an optical information storage medium on which data is recorded, wherein all or part of said barcode is written in overwriting fashion to a prescribed region of an information signal area on said optical information storage medium.

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