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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 8569
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 12193
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 12230
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS396
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES2107
 
  
 
H04B TRANSMISSION 2208
 
  
 
A61K PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES 1254
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 148
 
  
 
B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE 156
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 177

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7936659 Method and apparatus for micro optical recording and playback tracking controlJul 03, 02May 03, 11[G11B]
6982935 Pause control for a media player with a movable pickupFeb 01, 02Jan 03, 06[G11B]
6814897 Method for manufacturing a molding tool used for substrate moldingDec 05, 00Nov 09, 04[B29D]
6744711 Method and apparatus for a high-speed search of an optical mediumJun 20, 00Jun 01, 04[G11B]
6445650 High-speed dynamic actuating system for optical disksMay 02, 00Sep 03, 02[G11B]
6397167 Time and activity tracker with hardware abstraction layerDec 19, 00May 28, 02[G06F]
6317391 Optical disc system having current monitoring circuit with improved bias coil assembly and controller for laser driver and method for operating sameAug 07, 97Nov 13, 01[G11B]
6317393 Method and apparatus for controlling an optical head relative to an initial track and a target track on a storage medium having data arranged thereon in tracksFeb 13, 98Nov 13, 01[G11B]
6314069 Apparatus and method for controlling a focused beamJun 09, 00Nov 06, 01[G11B]
6278665 Optical disc system including current monitoring circuit assembly having controller with improved optics module and laser driver and method for operating sameSep 17, 97Aug 21, 01[G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7420893 Low seek time optical media tracking systemExpiredDec 22, 04Sep 02, 08[G11B]
7342852 Method and apparatus for differing focus between at least two dimensionsExpiredFeb 16, 05Mar 11, 08[G11B]
7061853 High-density optical pickup for rotating mediaExpiredDec 18, 01Jun 13, 06[G11B]
7050381 Optical system having a convex surface for accessing a storage mediumExpiredJul 03, 02May 23, 06[G11B]
7038979 Method and apparatus for a high-speed search of an optical mediumExpiredApr 02, 04May 02, 06[G11B]
2005/0232,117 SYNTHETIC NUMERICAL APERTURE DEVICE AND METHODAbandonedMar 28, 05Oct 20, 05[G11B]
6842407 Method and apparatus for tracking servo systemExpiredAug 17, 01Jan 11, 05[G11B]
6789045 Time and work tracker for serversExpiredJun 11, 03Sep 07, 04[G06F]
6741529 Method and apparatus for moving carriage assembly from initial position to target position and optical disc system including sameExpiredJun 07, 95May 25, 04[G11B]
2004/0090,874 Apparatus and method for effective reduction of a laser beam spot sizeAbandonedMay 29, 03May 13, 04[G11B]
6570839 Optical data system and optical disk relating theretoExpiredAug 03, 01May 27, 03[G11B]
6542451 Retrieving data from a storage device using programmable filter and equalizerExpiredMay 14, 97Apr 01, 03[G11B]
6532199 Optical actuator assembly with lens position sensor for recording or playbackExpiredSep 05, 00Mar 11, 03[G11B]
2002/0196,722 Method and device for increasing CD-R yieldAbandonedJan 18, 02Dec 26, 02[G11B]
2002/0186,647 Magnetic coupling power transmission apparatus for optical disk driveAbandonedJun 06, 01Dec 12, 02[H02K, H02P, G11B]
6493094 Method and apparatus for beam directingExpiredMar 20, 01Dec 10, 02[G01B]
6434087 Optical disc system and method for controlling bias coil and light source to process information on a storage mediumExpiredJun 07, 95Aug 13, 02[G11B]
6430126 Pick-up head controller for optical disk drivesExpiredMay 04, 00Aug 06, 02[G11B]
6418097 Analog to digital converter assembly for normalizing servo error signals and multiplexing reference voltage inputs and digital outputs and improved optical drive system including sameExpiredJun 07, 95Jul 09, 02[G11B]
6411584 Cartridge loading apparatus and methods of manufacturing and operating sameExpiredFeb 19, 99Jun 25, 02[G11B]

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