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(en)
*
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1972-08-25 |
1989-09-19 |
Thomson-Csf |
Optical disk arrangement with closed contours whose entire extent represents information
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US5307332A
(en)
*
|
1972-08-25 |
1994-04-26 |
Thomson-Csf |
Optical disk arrangement with diffractive tracks and a photoelectric assembly providing positional control information
|
US4856108A
(en)
*
|
1972-08-25 |
1989-08-08 |
Thomson-Csf |
Optical arrangement and a reading apparatus including detection of data elements diffractive along entire extent
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US6141300A
(en)
|
1989-06-20 |
2000-10-31 |
Discovision Associates |
Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
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US6069857A
(en)
|
1991-02-15 |
2000-05-30 |
Discovision Associates |
Optical disc system having improved circuitry for performing blank sector check on readable disc
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US5677899A
(en)
|
1991-02-15 |
1997-10-14 |
Discovision Associates |
Method for moving carriage assembly from initial position to target position relative to storage medium
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US6236625B1
(en)
|
1991-02-15 |
2001-05-22 |
Discovision Associates |
Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
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US5729511A
(en)
|
1991-02-15 |
1998-03-17 |
Discovision Associates |
Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
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US6532199B1
(en)
|
1991-02-15 |
2003-03-11 |
Discovision Associates |
Optical actuator assembly with lens position sensor for recording or playback
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US5808980A
(en)
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1991-02-15 |
1998-09-15 |
Discovision Associates |
Seek actuator for optical recording
|
US5774440A
(en)
*
|
1991-05-10 |
1998-06-30 |
Discovision Associates |
Optical data storage and retrieval system and method
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US5761170A
(en)
*
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1991-05-10 |
1998-06-02 |
Discovision Associates |
Optical data storage and retrieval system and method
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US6570839B2
(en)
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1991-05-10 |
2003-05-27 |
Discovision Associates |
Optical data system and optical disk relating thereto
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US5859825A
(en)
*
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1991-05-10 |
1999-01-12 |
Discovision Associates |
Optical data storage and retrieval system and method
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US5682367A
(en)
*
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1991-05-10 |
1997-10-28 |
Discovision Associates |
Optical data storage and retrieval system and method
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US6411580B1
(en)
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1993-01-25 |
2002-06-25 |
Noboru Kimura |
Storing data on a medium in an optical system
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US6343061B1
(en)
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1993-01-25 |
2002-01-29 |
Discovision Associates |
Optical data system and high density optical disk relating thereto
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US5790495A
(en)
*
|
1994-05-06 |
1998-08-04 |
Discovision Associates |
Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component
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US6542451B1
(en)
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1994-05-06 |
2003-04-01 |
Discovision Associates |
Retrieving data from a storage device using programmable filter and equalizer
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US5894468A
(en)
*
|
1994-05-06 |
1999-04-13 |
Discovision Associates |
Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level
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US5706267A
(en)
*
|
1994-05-06 |
1998-01-06 |
Discovision Associates |
Method and apparatus for retrieving data from a storage device
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US5659535A
(en)
*
|
1994-05-06 |
1997-08-19 |
Discovision Associates |
Method for retrieving data from a storage device
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US5974007A
(en)
|
1995-01-25 |
1999-10-26 |
Discovision Associates |
Apparatus for moving a carriage assembly from an initial position to a target position
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US6058081A
(en)
|
1995-01-25 |
2000-05-02 |
Discovision Associates |
Optical drive system having servomotor operated relative to maximum quad sum signal
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US6087644A
(en)
|
1995-01-25 |
2000-07-11 |
Discovision Associates |
Focus capture for optical disc system including detection of quad sum signal to close focus
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US6091684A
(en)
|
1995-01-25 |
2000-07-18 |
Discovision Associates |
Optical disc system and method for changing the rotational rate of an information storage medium
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US6034364A
(en)
|
1995-01-25 |
2000-03-07 |
Discovision Associates |
Optical disc system including focus capture assembly with focus error signal circuit and method for operating same
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US5920539A
(en)
|
1995-01-25 |
1999-07-06 |
Discovision Associates |
Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor
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US6243336B1
(en)
|
1995-01-25 |
2001-06-05 |
Discovision Associates |
Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal and focus capture method for use in same
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US6266306B1
(en)
|
1995-01-25 |
2001-07-24 |
Discovision Associates |
Analog to digital converter and assembly for use in optical drive system to normalize servo error signals and multiplex reference voltage inputs and digital outputs
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US6278665B1
(en)
|
1995-01-25 |
2001-08-21 |
Discovision Associates |
Optical disc system including current monitoring circuit assembly having controller with improved optics module and laser driver and method for operating same
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US6317391B1
(en)
|
1995-01-25 |
2001-11-13 |
Discovision Associates |
Optical disc system having current monitoring circuit with improved bias coil assembly and controller for laser driver and method for operating same
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US5878015A
(en)
|
1995-01-25 |
1999-03-02 |
Discovision Associates |
Laser driver for controlling electrical current passed to a laser in an optical disc system
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US5875158A
(en)
|
1995-01-25 |
1999-02-23 |
Discovision Associates |
Servo control system for information storage device
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US6418097B1
(en)
|
1995-01-25 |
2002-07-09 |
Discovision Associates |
Analog to digital converter assembly for normalizing servo error signals and multiplexing reference voltage inputs and digital outputs and improved optical drive system including same
|
US6434087B1
(en)
|
1995-01-25 |
2002-08-13 |
Discovision Associates |
Optical disc system and method for controlling bias coil and light source to process information on a storage medium
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US5828054A
(en)
|
1995-01-25 |
1998-10-27 |
Discovision Associates |
Focusing method and system for focus capture and focus control in optical disc system including detection of Quad Sum signal to close focus
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US5796703A
(en)
|
1995-01-25 |
1998-08-18 |
Discovision Associates |
Apparatus for controlling an electrical current passed to a writing device in an optical storage system
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US5748578A
(en)
|
1995-01-25 |
1998-05-05 |
Discovision Associates |
Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
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US6741529B1
(en)
|
1995-01-25 |
2004-05-25 |
Discovision Associates |
Method and apparatus for moving carriage assembly from initial position to target position and optical disc system including same
|