Inventor

Chul-woo Lee

Inventor

Seoul, KR

Overview

1992–2020

Patent span

Physics

Primary field (CPC G)

Patents· 187 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer41%

G02BOptical elements, systems or apparatus12%

G10LSpeech analysis techniques or speech synthesis6%

B82YSpecific uses or applications of nanostructures4%

H04NPictorial communication, e.g. television4%

G06FElectric digital data processing4%

H03MCoding3%

Y10TTechnical subjects covered by former us classification3%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them2%

PatentTitleYear

10,776,077Method, apparatus and recording medium for processing division calculation2020 10,701,348High brightness stereoscopic image screening device using modulator asymmetry drive, and method for operating same2020 10,692,538Method and program for generating responsive image2020 10,626,035Sequencing batch reactor for sewage treatment and sewage treatment system comprising same2020 10,602,230Apparatus and method for controlling media output level2020 10,585,822Operation method of host system including storage device and operation method of storage device controller2020 10,494,282Bioreactor for treating sewage and sewage treatment system comprising the same2019 10,463,992High-rate sedimentation tank and water treatment apparatus including the same2019 10,332,563Method and program for generating responsive image2019 10,321,525Control panel and microwave oven2019 10,318,275Software update apparatus and method in virtualized environment2019 10,291,906Stereoscopic image device having improved brightness and method for providing stereoscopic image2019 10,077,086Structure for mounting spare tire for antitheft2018 10,067,906Computing device including an inter-integrated circuit (I2C) communication module and a communication error recovery method thereof2018 9,958,697Stereoscopic image apparatus2018 9,948,925Modulator for stereoscopic image device and stereoscopic image device using same2018 9,880,781'Storage device and operating method of storage device'2018 9,878,270'High-rate sedimentation tank and water treatment apparatus including the same'2018 9,802,445'Apparatus for noise reduction of tire of vehicle'2017 9,798,951'Apparatus, method, and processor for measuring change in distance between a camera and an object'2017 9,514,768'Audio reproducing method, audio reproducing apparatus therefor, and information storage medium'2016 9,478,223'Method and apparatus for down-mixing multi-channel audio'2016 9,355,645'Method and apparatus for encoding/decoding stereo audio'2016 9,294,862'Method and apparatus for processing audio signals using motion of a sound source, reverberation property, or semantic object'2016 9,137,617'Correlation parameter transmitting in an encoding apparatus and decoding apparatus'2015 8,948,891'Method and apparatus for encoding/decoding multi-channel audio signal by using semantic information'2015 8,923,043'Memory device using flag cells and system using the memory device'2014 8,893,233'Referer verification apparatus and method'2014 8,848,502'Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses'2014 8,843,380'Method and apparatus for encoding residual signals and method and apparatus for decoding residual signals'2014 8,836,610'Display device and driving method thereof'2014 8,798,276'Method and apparatus for encoding multi-channel audio signal and method and apparatus for decoding multi-channel audio signal'2014 8,781,134'Method and apparatus for encoding and decoding stereo audio'2014 8,725,519'Audio encoding and decoding apparatus and method thereof'2014 8,538,762'Method and apparatus for encoding/decoding stereo audio'2013 8,503,272'Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses'2013 8,441,593'Receiving container and display device having the same, and method thereof'2013 8,438,017'Method and apparatus for encoding/decoding audio signal using adaptive LPC coefficient interpolation'2013 8,422,560'Method and apparatus for encoding/decoding media signal'2013 8,395,856'Servo pattern erasing method and apparatus of hard disk drive'2013 8,392,177'Method and apparatus for frequency encoding, and method and apparatus for frequency decoding'2013 8,296,137'Method and apparatus for coding and decoding amplitude of partial'2012 8,289,655'Hard disk drive having an actuator whose length is less than the distance between its axis of rotation and the axis of rotation of a disk of the drive'2012 RE043743'Projection-type image display apparatus and method'2012 8,290,770'Method and apparatus for sinusoidal audio coding'2012 8,233,357'Encoder capable of compensating for tilt, hard disk drive using the same, and servo track writing system for the hard disk drive'2012 8,199,276'Liquid crystal display and method thereof'2012 8,165,871'Encoding method and apparatus for efficiently encoding sinusoidal signal whose magnitude is less than masking value according to psychoacoustic model and decoding method and apparatus for decoding encoded sinusoidal signal'2012 8,159,788'Actuator latch system of hard disk drive including a latch lever having two offset hooks at an end of the latch lever'2012 8,134,808'Hard disk drive'2012 RE043106'Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens'2012 8,055,506'Audio encoding and decoding apparatus and method using psychoacoustic frequency'2011 8,031,439'Head stack assembly including a swing arm having a bobbin and a printed circuit board with conductive traces attached to the bobbin, and hard disk drive comprising the same'2011 8,024,180'Method and apparatus for encoding envelopes of harmonic signals and method and apparatus for decoding envelopes of harmonic signals'2011 8,019,616'Method and apparatus for encoding audio signal, and method and apparatus for decoding audio signal'2011 8,000,975'User adjustment of signal parameters of coded transient, sinusoidal and noise components of parametrically-coded audio before decoding'2011 7,889,485'Display device module and method of handling the same'2011 7,826,173'Disk spacer and hard disk drive having the same'2010 7,701,657'High-density recording method for hard disk drives and a pre-amplifier circuit suitable for use with same'2010 7,602,586'Head parking ramp for data storage device'2009 7,573,681'HGA protecting method and member and method of implementing the HGA protecting method and member in a hard disk drive'2009 7,564,654'Actuator latch device for hard disk drive'2009 7,558,179'Compatible optical pickup using light sources following a common optical path'2009 7,538,975'Disk spacer and spindle motor assembly employing the same'2009 7,431,478'Liquid crystal display device including backlight unit'2008 7,362,693'Near-field optical storage medium and optical data storage system therefor'2008 7,310,123'Liquid crystal display module including thermoelectric device'2007 7,301,725'Disk drive with cover plate having high stiffness'2007 7,301,730'Suspension with stiffened end-tab for actuator in data storage device'2007 7,301,530'Pointer control method, pointing apparatus, and host apparatus therefor'2007 7,289,294'Particle remover for data storage device and ramp having the particle remover'2007 7,259,938'Actuator latch for disk drive'2007 7,200,098'Objective lens for high-density optical focusing and an optical disk in an optical pickup'2007 7,133,248'Hard disc drive having a base including a channel at the bottom of a moving region and corresponding to a moving path of a slider'2006 7,123,437'Recording apparatus enabling replacement of disk cartridge'2006 7,117,542'Headwear and sweatband with stretch stitch line'2006 7,116,627'Compatible optical pickup device using a single light source'2006 7,088,544'Method for controlling movement of head in data storage device and disk drive employing the method'2006 7,079,471'OPTICAL PICKUP USING TWO LASER BEAM SOURCES OF DIFFERENT WAVELENGTHS FOR AN OPTICAL DISK DRIVE AND A CONVERTER TO OPTIMIZE A LIGHT BEAM REFLECTED OFF AN OPTICAL DISC FOR DETECTION BASED ON REFLECTED LIGHT BEAM WAVELENGTH'2006 7,079,171'Color laser printer'2006 7,072,254'Optical pickup device and recording medium used therefor'2006 7,072,114'Optical pickup using an optical phase plate and which is compatible with optical recording media of different types'2006 7,054,259'Near-field optical storage medium and optical data storage system therefor'2006 7,035,191'Compatible optical pickup using light sources following a common optical path'2006 7,020,950'Disc balancing device'2006 7,016,291'Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure'2006 RE039025'Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device'2006 6,985,293'Optical pickup using an optical phase plate and which is compatible with optical media for different types'2006 6,958,891'Actuator loading/unloading device for disc drive'2005 6,938,890'Objective lens for high-density optical focusing and an optical disk in an optical pickup'2005 6,899,937'Optical disc'2005 6,888,555'Color synchronization method and color laser printer'2005 6,885,625'Near-field optical storage medium and optical data storage system therefor'2005 6,882,614'Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses'2005 6,816,449'Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens'2004 6,801,492'Solid immersion mirror type objective lens and optical pickup device adopting the same'2004 6,797,739'Triazene-based compound comprising functionalized alkylthio groups, and photopolymerization initiator'2004 6,798,732'Near-field optical storage medium and optical data storage system therefor'2004 6,791,933'Optical pickup using an optical phase plate'2004 6,788,636'Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens'2004 6,765,857'Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure'2004 6,657,942'Optical recording and reproducing apparatus having floating swing arm and optical disk for use therewith'2003 6,650,469'Objective lens formed of a single lens and having high numerical aperture and an optical pickup apparatus adopting the same'2003 6,646,976'Optical pickup apparatus capable of reducing cross talk by adjacent tracks and a method therefor'2003 6,639,889'Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats'2003 6,621,787'Optical storage medium having protective layer thicker than wavelength of useable light source'2003 6,619,801'Projection type image display apparatus realizing three-dimensional image'2003 6,590,853'Swing arm driving type optical recording/reproducing apparatus'2003 6,583,495'Variable capacitor and memory device employing the same'2003 6,567,366'Optical pickup using laser light of different wavelengths to record and reproduce information to/from a disk'2003 6,547,398'Projection-type image display apparatus and method'2003 6,534,736'Key switch of keyboard unit'2003 6,510,126'Optical disc having textured structure, and a method of manufacturing the optical disc'2003 6,487,422'Wireless telephone having remote controller function'2002 6,480,222'Semiconductor laser and flying optical pickup for recording/reproducing using the same'2002 6,449,237'Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure'2002 6,430,139'Objective lens for high-density optical focusing, and optical pickup using the same'2002 6,400,666'Optical pickup device'2002 6,396,638'Optical pickup device capable of stable tracking'2002 6,363,046'Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable compact disk (CD-R) using a holographic variable aperture'2002 6,359,850'Optical pickup having catadioptric objective lens'2002 6,345,029'Optical pickup apparatus and method'2002 6,337,841'Compatible optical pickup'2002 6,314,067'Optical disk having pattern for tilt detection'2001 6,285,646'Optical pickup using objective lens compatible with a plurality of optical disks'2001 6,275,461'Optical pickup using an optical phase plate'2001 6,272,096'Optical pickup using an optical phase plate'2001 6,266,315'Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk'2001 6,259,668'Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses'2001 6,233,217'Optical pickup for recording/reproduction with a light emitting diode light source'2001 6,222,812'Optical pickup using an optical phase plate'2001 6,212,154'Optical pickup for optical disk and light source for optical pickup'2001 6,198,714'Optical pickup having an objective lens compatible with a plurality of optical disk formats'2001 6,147,955'Optical pickup device to read from and record information to disks of different thicknesses'2000 6,114,689'Optical pickup device'2000 6,091,691'Optical pickup having an objective lens compatible with a plurality of optical disk formats'2000 6,088,170'Optical system for shaping light beams and an optical pickup employing the same'2000 6,081,498'Optical pickup compatible with recordable compact disk and digital video disk using plane parallel plates'2000 6,078,555'Optical head assembly having compatibility with digital versatile disk (DVD) and a recordable compact disk (CD-R) and for obtaining a high-speed access time'2000 6,043,912'Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens'2000 6,016,293'Method of discriminating discs having different thickness and optical pickup device adopting the same'2000 6,009,066'Optical pickup of two different wavelength laser sources with an objective lens having an annular shielding region'1999 5,991,254'Optical pickup having a multi-coated polarization holographic element'1999 5,987,924'Lens mold and method of manufacturing a lens'1999 5,986,993'Optical pickup device having a diaphram with a predetermined aperture'1999 5,933,401'Optical pickup having plural optical sources and plural optical detectors'1999 5,909,424'Optical pickup device and method to read from and record information to disks of different thicknesses'1999 5,903,536'Objective lens device, optical pickup adopting the same and method for manufacturing an objective lens'1999 5,872,760'Optical pickup for correcting an astigmatic difference of light'1999 5,870,369'Objective lens device including an objective lens and a transparent member having two light control portions and optical pickup using the objective lens device'1999 5,841,754'Optical pickup device having an objective lens and auxiliary lenses exterior thereof'1998 5,822,135'Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device'1998 5,805,556'Optical pickup apparatus having a holographic optical element'1998 5,802,037'Optical detector with two detecting regions for reproducing and recording information on two kinds of disks having different thicknesses'1998 5,796,700'Optical pickup to circularize light emitted from a light source'1998 5,793,407'Method and apparatus for forming a light spot smaller than a theoretical limit for high density recording'1998 5,777,973'Reproducing and recording optical pickup compatible with discs having different thicknesses'1998 5,748,172'Mirror driving method and apparatus of micro-mirror array'1998 5,748,356'Optical scanning apparatus'1998 5,737,299'Optical pickup apparatus having wave plates'1998 5,737,295'Dual-focus optical pickup for different thicknesses of recording medium'1998 5,734,512'Dual-focus objective lens of optical pickup'1998 5,721,629'Dual-focus forming method and apparatus thereof'1998 5,706,263'Method and apparatus for high-density reproduction'1998 5,703,862'Dual focus objective lens with two curvatures for focussing light on two different kinds of disks with different thicknesses'1997 5,699,340'Method for correcting aberration due to optical disk tilt and apparatus therefor'1997 5,699,339'Inverse image generating method apparatus thereof and focus error detecting method using the same and apparatus thereof'1997 5,665,957'Lens device comprising light blocking means and an optical pickup apparatus using the lens device'1997 5,657,146'Optical scanning apparatus'1997 5,650,986'Optical pickup driving apparatus for an optical disk drive'1997 5,640,265'Optical scanning apparatus'1997 5,631,893'Multi-head device for optical disk and recording/reproducing system for multiple users utilizing the same'1997 5,629,514'Critical angle focus error detector'1997 5,617,398'In-line optical pickup using Wollaston Prism and collimating lens directing polarized light components to detectors'1997 5,594,714'Focus error detection with two symmetrically splitted reflected beams'1997 5,587,976'Optical pickup for optical magnetic disc'1996 5,566,016'Laser beam scanner'1996 5,557,597'Focus error detector'1996 5,537,384'Focus error detector'1996 5,526,336'Optical pickup for optical disk having multiple recording layers'1996 5,400,314'Optical pickup using a lamp'1995 5,383,173'Optical pick-up utilizing a phase diffraction grating for diffracting reflected light in two directions'1995 5,374,819'Optical head having a beam cutting mirror with a total absorption surface'1994 5,363,353'Magneto-optical disk drive having multiple electromagnet elements'1994 5,295,129'Light signal detecting circuit'1994 5,206,852'High-density recording optical head'1993 5,091,571'Process for preparing N,N\'-disubstituted urea'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2020Patents assigned to SAMSUNG ELECTRONICS CO LTD (157)· patent assignee history

1993–2020Based in Seoul, KR· patent location history

2000–2008Based in Sungnam, KR· patent location history

2003–2019Based in Seongnam-si, KR· patent location history

2011–2020Based in Suwon-si, KR· patent location history

2012–2016Patents assigned to LEE CHUL-WOO (27)· patent assignee history

2012–2016Patents assigned to LEE NAM-SUK (13)· patent assignee history

2012–2016Patents assigned to JEONG JONG-HOON (11)· patent assignee history

2012–2016Patents assigned to MOON HAN-GIL (11)· patent assignee history

2014–2018Based in Anyang-si, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SAMSUNG ELECTRONICS CO LTD	157	1993–2020
LEE CHUL-WOOself	27	2012–2016
LEE NAM-SUK	13	2012–2016
JEONG JONG-HOON	11	2012–2016
MOON HAN-GIL	11	2012–2016

Locations

Location	Patents	Span
Seoul, KR	85	1993–2020
Seongnam-si, KR	23	2003–2019
Suwon-si, KR	19	2011–2020
Sungnam, KR	15	2000–2008
Anyang-si, KR	9	2014–2018