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Class Information
Number: 369/111
Name: Dynamic information storage or retrieval > Specific detail of information handling portion of system > Radiation beam modification of or by storage medium > Spiral or helical track
Description: Subject matter wherein the path along which the information is stored or retrieved has plural, curved turns about an axis of rotation of the storage medium.

Patents under this class:
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Patent Number Title Of Patent Date Issued
RE44659 Record carrier, playback device and method of recording information Dec. 24, 2013
8593917 High data density optical recording medium Nov. 26, 2013
8576682 Method and apparatus for preventing data reproducibility Nov. 5, 2013
8036072 Holographic recording and reproduction system having servo optical path Oct. 11, 2011
8023395 Optical storage medium comprising tracks with positive and negative marks, and stampers and production methods for manufacturing of the optical storage medium Sep. 20, 2011
7852732 Lens apparatus Dec. 14, 2010
7457219 Disc type recording medium on which additional information is recorded by forming a disc track, method of forming disc track, and recoding medium for recording programs executing the method Nov. 25, 2008
7342866 Optical disc and its information recording method and apparatus Mar. 11, 2008
7339875 Information storage medium, playback and recording method Mar. 4, 2008
7283447 Optical disc and optical disc apparatus Oct. 16, 2007
7126906 Optical record carrier, drive unit, data updating method and software version-up method Oct. 24, 2006
7095700 Optical disc medium, optical disc recording/reproducing apparatus and method Aug. 22, 2006
7075870 Recording/reproducing apparatus for optical information recording medium and optical head Jul. 11, 2006
7054245 Record carrier, playback device and method of recording information May. 30, 2006
7031246 Optical disc, optical disc reproducing method and apparatus, and recording method Apr. 18, 2006
7006425 Information recording and/or reproducing method and apparatus for three dimensional optical recording medium Feb. 28, 2006
6999405 Optical recording medium, master disc for the preparation of the optical recording medium and optical recording and/or reproducing apparatus Feb. 14, 2006
6999398 Method and apparatus for recording information on information recording medium Feb. 14, 2006
6980495 Optical recording apparatus with interleaving blank rounds into spiral track Dec. 27, 2005
6867955 ARC discharge protection apparatus Mar. 15, 2005
6618349 Optical recording medium and its designing method Sep. 9, 2003
6618345 Reduced crosstalk optical recording medium using an optically related track pitch Sep. 9, 2003
6608800 Optical data-storage apparatus employing optical media with three-dimensional data pattern Aug. 19, 2003
6600711 Optical recording medium including prepit sequence formed at predetermined interval between land track and neighboring groove track along spiral Jul. 29, 2003
6600713 Recording media having separate read only and read/write areas Jul. 29, 2003
6549495 Record carrier, playback device and method of recording information Apr. 15, 2003
6473657 Adaptive motion controller Oct. 29, 2002
6430123 Scanning micropatterns on an optical medium Aug. 6, 2002
6339576 Information recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatus Jan. 15, 2002
6310851 Frequency demodulating circuit, optical disk apparatus thereof and preformating device Oct. 30, 2001
6307824 Dye record medium, record disc producing apparatus, and information recording/reproducing apparatus Oct. 23, 2001
6307799 Acousto optic data storage system on a stationary and high density data storage media Oct. 23, 2001
6256282 Optical recording medium and recording method thereof Jul. 3, 2001
6203968 Method for manufacturing an optical disk master using an exposure beam, its exposure apparatus and an optical disk Mar. 20, 2001
6147952 Optical disk apparatus for reproducing information from an optical recording medium Nov. 14, 2000
6115346 Method of reducing formatting time for rewritable compact disks by formatting less than the entire logical format Sep. 5, 2000
6104686 Copy protection marks on a transparent layer of an optical disk indicating that the disk has been previously accessed Aug. 15, 2000
6084839 Method of reducing formatting time for rewritable compact disks by formatting less than the entire logical format Jul. 4, 2000
6035351 Storage of user defined type file data in corresponding select physical format Mar. 7, 2000
6031808 Optical disc, formed from joining individual discs and method and apparatus for manufacturing and using such optical disc Feb. 29, 2000
6018507 Method of and apparatus for recording data on land/groove track on optical recording medium Jan. 25, 2000
6009058 Method of reducing formatting time for rewritable compact disks by pre-formatting less than the entire standard logical format Dec. 28, 1999
5953296 Optical information recording/reproducing apparatus and method with automatic servo loop adjustment function Sep. 14, 1999
5889920 Receiver/recorder of television transmissions Mar. 30, 1999
5872749 Arrangement for reading an optically readable carrier Feb. 16, 1999
5850381 Method of recording information on a disc by recording information at interleaved sectors Dec. 15, 1998
5835404 DNA optical storage device utilizing non-radiative energy transfer Nov. 10, 1998
5809006 Optical disk with copy protection, and apparatus and method for recording and reproducing same Sep. 15, 1998
5802025 Track detection methods and apparatus for simultaneous monitoring of multiple adjacent tracks of an optical disk Sep. 1, 1998
5774439 Optical-disk recording and reproducing apparatus and optical disk for recording information on lands and grooves Jun. 30, 1998

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