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US 6,285,762 B1Granted
Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, marking forming apparatus, method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
Life of this patent
Estimating the term…
Abstract
An optical disk includes a first area where data is recorded with pit pattern, a second information area where another data is recorded with marks which have a stripe-like configuration, and a guard band area formed between the first information area and the second information area. An address is written with pit pattern on the guard band area.
Claims4
An optical disk comprising
- a first information area where data is recorded with pit pattern,
- a second information area where another data is recorded with marks which have barcode-like configurations in a radius direction, said second information area being formed partially in the first information area,
- an identifier is provided in the first information area for indicating whether or not said marks with barcode-like configurations are present on said optical disk,
- a guard band area which is formed between the identifier and the second information area, and wherein
- at least an address is written with pit pattern on said guard band area.
2 more elements
Dependencies are inferred from the claim text.