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
First Claim
1. An optical disk on which data is recorded, wherein in a prescribed region of said disk, an identifier is provided for indicating whether a barcode-like mark is present or not on said optical disk, said identifier and said barcode-like mark are in respectively different locations on said disk, said barcode-like mark disposed in a circumferential direction, and said barcode-like mark having a plurality of bars, each of said bars extending in a radial direction, andsaid prescribed region is a control data area in which physical feature information regarding said optical disk is recorded and a guard band area, in which at least an address is recorded, is provided between said barcode-like mark area and said control data area.
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Abstract
On an optical disk, data is recorded. In a prescribed region of the disk, an identifier is provided for indicating whether or not a barcode-like mark is present on the optical disk. The identifier and the barcode-like mark are in different locations on the disk. The prescribed region is a control data area in which physical feature information regarding the optical disk is recorded. The prescribed region is also a guard bond area in which at least an address is recorded.
49 Citations
10 Claims
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1. An optical disk on which data is recorded, wherein in a prescribed region of said disk, an identifier is provided for indicating whether a barcode-like mark is present or not on said optical disk, said identifier and said barcode-like mark are in respectively different locations on said disk, said barcode-like mark disposed in a circumferential direction, and said barcode-like mark having a plurality of bars, each of said bars extending in a radial direction, and
said prescribed region is a control data area in which physical feature information regarding said optical disk is recorded and a guard band area, in which at least an address is recorded, is provided between said barcode-like mark area and said control data area.
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3. An optical disk reproduction apparatus for use with a disk on which data is recorded, wherein in a prescribed region of said disk, an identifier is provided for indicating whether a barcode-like mark is present or not on said optical disk, said identifier and said barcode-like mark are in respectively different locations on said disk, said barcode-like mark disposed in a circumferential direction, and said barcode-like mark having a plurality of bars, each of said bars extending in a radial direction, said apparatus comprising:
- reproduction means including an optical head for reproducing said barcode-like mark on said optical disk;
identifier detection means for detecting said identifier of said optical disk, and control means for controlling a prescribed operation based on said identifier detected by said identifier detection means, wherein said disk includes a control data area for holding data corresponding to physical characteristics of disk and a guard band area situated between said control data area and said barcode-like mark, said guard band area including address information which is read by said optical head to reposition said optical head away from said guard band area. - View Dependent Claims (4, 5, 6, 9, 10)
- reproduction means including an optical head for reproducing said barcode-like mark on said optical disk;
Specification