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, andwherein a control data area, in which physical feature information regarding said optical disk is recorded, includes said prescribed region.
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Abstract
Data is recorded on an optical disk. In a prescribed region of the disk, an identifier is provided for indicating whether a barcode-like mark is present or not on the disk. The identifier and the barcode-mark are in different locations on the disk. A control area, in which physical feature information regarding the disk is recorded, is included in the prescribed region.
30 Citations
7 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
wherein a control data area, in which physical feature information regarding said optical disk is recorded, includes said prescribed region.
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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 prescribed region is included in a control data area in which physical feature information regarding said optical disk is recorded, said apparatus comprising:
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reproduction means for reproducing said barcode-like mark on said optical disk; identifier detection means for detecting said identifier on said optical disk, and control means for controlling a prescribed operation based on said identifier detected by said identifier detection means, wherein said control means signals said reproduction means not to reproduce said barcode-like mark responsive to said identifier indicating absence of said barcode-like mark. - View Dependent Claims (4, 5, 7)
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Specification