US Patent 7974158 Optical disk and optical recording/reproducing device
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Patent abstract
A small-sized, large-capacity optical disk is provided which is superior in portability. The optical disk has a diameter less than 64 mm and a thickness less than 0.8 mm. Tracks are formed with a pitch less than 0.6 μm, and the record area is divided into a plurality of zones alone the radium. The optical disk can store more than 650 MB of compressed data.
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Patent Inventor Names
Takahashi Akira0
Terashima Shigeo0
Yamaoka Hideyoshi0
Edits on 24 May, 2023
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US Patent 07974158 Optical disk and optical recording/reproducing device US Patent 7974158 Optical disk and optical recording/reproducing device
Infobox
Patent Number
079741580
Patent Number
79741580
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079741580
Date of Patent
July 5, 2011
0Patent Application Number
100091550
Date Filed
April 26, 2000
0Patent Primary Examiner
Edits on 8 Dec, 2021
Golden AI
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US Patent 07974158 Optical disk and optical recording/reproducing device
Infobox
Is a
Patent jurisdiction
Patent number
07974158
Date of patent
July 5, 2011
Patent application number
10009155
Date Filed
April 26, 2000
Patent primary examiner
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