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Browse by Category: Main > Information Technology
Class Information
Number: 369/275.5
Name: Dynamic information storage or retrieval > Storage medium structure > Optical track structure (e.g., phase or diffracting structure, etc.) > Protection (e.g., preventing damage to medium, etc.)
Description: Subject matter wherein some means of guarding is provided to prevent some undesired effect.


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7601481 Multilayer phase-change information recording medium, and method for recording and reproducing using the same Oct. 13, 2009
7583580 Optical recording medium as well as optical recording and reproduction method Sep. 1, 2009
7566523 Optical information-recording media and optical information-recording/reproduction apparatus Jul. 28, 2009
7542401 Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus Jun. 2, 2009
7422838 Phase-change optical recording medium Sep. 9, 2008
7420908 Optical recording medium Sep. 2, 2008
7406005 Optical recording medium, memory apparatus, and recording/reproduction method Jul. 29, 2008
7394751 Optical storage system optical storage medium and use of such a medium Jul. 1, 2008
7384723 Optical information recording medium Jun. 10, 2008
7385740 Hologram recording medium Jun. 10, 2008
7376073 Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions May. 20, 2008
7368222 Optical data storage media with enhanced contrast May. 6, 2008
7370367 Security device and article incorporating same May. 6, 2008
7368223 Multi-stack optical data storage medium and use of such a medium May. 6, 2008
7366081 Information recording medium Apr. 29, 2008
7352680 Optical recording medium having relation between reflection layer and pit length Apr. 1, 2008
7341820 Optical information recording medium Mar. 11, 2008
7335459 Phase-change optical recording medium Feb. 26, 2008
7295508 Optical disk Nov. 13, 2007
7294446 Digital analog recording using near field optical imaging Nov. 13, 2007
7275040 RFID security device for optical disc Sep. 25, 2007
7272107 Optical recording medium having super resolution layer Sep. 18, 2007
7245580 Optical recording medium having protective and/or adhesive layers, and method of manufacture Jul. 17, 2007
7241549 Information recording medium Jul. 10, 2007
7236450 Recording medium having resin substrate Jun. 26, 2007
7221644 Disc-shaped recording medium, disc driving device and disc producing method May. 22, 2007
7212489 Optical disc and method of protecting same May. 1, 2007
7169533 Optical information recording medium, method for manufacturing the same and recording/reproduction method Jan. 30, 2007
7166415 Phase-change recording material used for information recording medium and information recording medium employing it Jan. 23, 2007
7138155 Method for evaluating optical information medium and optical information medium Nov. 21, 2006
7129019 Optical information recording medium Oct. 31, 2006
7106676 Disc player system Sep. 12, 2006
7079479 Optical storage medium having an organic recording layer attached to a dielectric layer Jul. 18, 2006
7062784 Prevention of disk piracy Jun. 13, 2006
7041430 Information recording media, manufacturing technique and information recording method May. 9, 2006
7023790 Method and apparatus for recording and reproducing information on and from optical disc Apr. 4, 2006
7020780 Method apparatus and systems for producing and writing cipher keys, reproducing information with a cipher key, and for permitting reproduction of information with a cipher key, and permitting Mar. 28, 2006
6988206 Prevention of CD-audio piracy using sub-code channels Jan. 17, 2006
6914874 DISKLIKE RECORDING MEDIA, A METHOD FOR DETECTING FORGED DISKS, AN ANTI-FORGERY SYSTEM FOR PERFORMING A TRUE-FALSE JUDGEMENT BASED ON INFORMATION COLLECTED FROM THE RECORDING MEDIA, AND A MANUF Jul. 5, 2005
6908725 Double-sided hybrid optical disk with surface topology Jun. 21, 2005
6901043 Scratch-off material layer applied on optical recording media May. 31, 2005
6862176 Disk drive cover for use with a disk drive to provide for disk shrouding and heat dissipation Mar. 1, 2005
6862685 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 Mar. 1, 2005
6855479 Phase-change optical recording media Feb. 15, 2005
6851880 Coating tool and coating set Feb. 8, 2005
6846611 Phase-change optical recording medium Jan. 25, 2005
6839318 Optical information recording medium having ultraviolet-curing resin and adhesive layers and method of manufacturing same Jan. 4, 2005
6835523 Apparatus for fabricating coating and method of fabricating the coating Dec. 28, 2004
6835531 Phase change optical disc Dec. 28, 2004
6821707 Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information Nov. 23, 2004

1 2 3 4 5


 
 
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