• 1041 Citations
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1988 …2019
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Research Output 1988 2019

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Article
2019

Suppression algorithm of speckle noise for parallel phase-shift digital holography

Jeong, W., Son, K., Cho, J., Yang, H. & Park, N. C., 2019 Apr 15, In : Optics and Laser Technology. 112, p. 93-100 8 p.

Research output: Contribution to journalArticle

Holography
Speckle
Phase shift
holography
phase shift
2018
1 Citation (Scopus)

Autofocusing algorithm for a digital holographic imaging system using convolutional neural networks

Son, K., Jeong, W., Jeon, W. & Yang, H., 2018 Sep, In : Japanese Journal of Applied Physics. 57, 9, 09SB02.

Research output: Contribution to journalArticle

Holograms
Imaging systems
Neural networks
Pattern recognition systems
Wave interference

Development of foxtail robot mechanism using phase difference motion for narrow space

Lee, D. L., JeGal, M. S. & Yang, H. S., 2018 Dec, In : Transactions of the Korean Society of Mechanical Engineers, B. 42, 12, p. 843-851 9 p.

Research output: Contribution to journalArticle

Robots
Pipelines
Experiments
9 Citations (Scopus)

Speckle noise reduction for digital holographic images using multi-scale convolutional neural networks

Jeon, W., Jeong, W., Son, K. & Yang, H., 2018 Sep 1, In : Optics Letters. 43, 17, p. 4240-4243 4 p.

Research output: Contribution to journalArticle

noise reduction
2017
2 Citations (Scopus)

An Adaptive Disturbance Rejection Method with Stability Enhancement Using Adjustable Dead Zone for Hard Disk Drives

Lee, J. S., Lim, S. Y., Kim, I., Jeong, W., Park, S. & Yang, H. S., 2017 Mar 1, In : IEEE Transactions on Magnetics. 53, 3, 7738570.

Research output: Contribution to journalArticle

Disturbance rejection
Hard disk storage
Notch filters
Degradation
2016
2 Citations (Scopus)

Tilt measurement and compensation algorithm for holographic data storage with optimized quadratic windows

Son, K., Lim, S. Y., Lee, J. S., Jeong, W. & Yang, H. S., 2016 Sep 1, In : Japanese Journal of Applied Physics. 55, 9, 09SA02.

Research output: Contribution to journalArticle

data storage
Data storage equipment
error signals
disturbances
Compensation and Redress
2015
1 Citation (Scopus)

Intelligence control system compensation by DNA coding method in holographic data storage system

Kim, J. H., Yang, H. & Jeong, W., 2015 May 13, In : Microsystem Technologies. 21, 12, p. 2777-2787 11 p.

Research output: Contribution to journalArticle

intelligence
data storage
coding
DNA
Computer systems
2014
2 Citations (Scopus)

An intelligent distortion-detection algorithm for restoring data in a holographic data storage system

Jeong, W., Kim, J. H., Lim, S. Y., Lee, J. S. & Yang, H., 2014 Aug, In : Microsystem Technologies. 20, 8-9, p. 1571-1578 8 p.

Research output: Contribution to journalArticle

data storage
Computer systems
Data storage equipment
misalignment
image rotation

Generation of fuzzy rules and learning algorithm for servo control in holographic data storage system

Kim, J. H., Yang, H. & Jeong, W., 2014 Aug, In : Microsystem Technologies. 20, 8-9, p. 1613-1621 9 p.

Research output: Contribution to journalArticle

Fuzzy rules
data storage
Learning algorithms
learning
Computer systems

Measurement of slot misalignment in an optical archive data storage system using dual sensing

Lim, S. Y., Yang, H., Yoo, S., Lee, H. B. & Do Choi, Y., 2014 Jan 1, In : Microsystem Technologies. 20, 8-9, p. 1549-1555 7 p.

Research output: Contribution to journalArticle

Optical data storage
data storage
slots
misalignment
Data storage equipment
2013
6 Citations (Scopus)

Design and control method for a high-mobility in-pipe robot with flexible links

Jeon, W., Kim, I., Park, J. & Yang, H., 2013 Jul 29, In : Industrial Robot. 40, 3, p. 261-274 14 p.

Research output: Contribution to journalArticle

Pipe
Robots
Navigation
Experiments

Disturbances analysis considering an effective servo system for holographic disc drive

Lim, S. Y., Lee, J., Lee, J. S., Jeong, W., Yang, H., Park, N. C., Park, K. S. & Park, Y. P., 2013 Sep 1, In : Japanese journal of applied physics. 52, 9 PART3, 09LF03.

Research output: Contribution to journalArticle

Servomechanisms
disturbances
data storage
eccentricity
deviation
3 Citations (Scopus)

Improved nanogap servo system using an error-based disturbance observer for high-speed in solid immersion lens-based plasmonic lithography

Lim, G., Kim, T., Lee, W. S., Choi, G. J., Park, K. S., Park, Y. P., Yang, H. & Park, N. C., 2013 Sep 1, In : Japanese journal of applied physics. 52, 9 PART3, 09LG02.

Research output: Contribution to journalArticle

Servomechanisms
Lithography
submerging
Lenses
disturbances
5 Citations (Scopus)

Improvement of bit error rate in holographic data storage using the extended high-frequency enhancement filter

Kim, D. H., Cho, J., Moon, H., Jeon, S., Park, N. C., Yang, H., Park, K. S. & Park, Y. P., 2013 Sep 1, In : Japanese journal of applied physics. 52, 9 PART3, 09LD06.

Research output: Contribution to journalArticle

data storage
bit error rate
Image reconstruction
Bit error rate
restoration
2 Citations (Scopus)

Tilt servo control by intelligent algorithm in holographic data storage system

Kim, J. H., Jeong, W. & Yang, H., 2013 Sep 1, In : Japanese journal of applied physics. 52, 9 PART3, 09LD12.

Research output: Contribution to journalArticle

data storage
Data storage equipment
Fuzzy rules
fuzzy systems
intelligence

Twyman-Green interferometer using virtual optics for eliminating reference wave

Min, C. K., Jeon, S., Moon, H., Park, K. S., Park, N. C., Yang, H. & Park, Y. P., 2013 Sep 1, In : Microsystem Technologies. 19, 9-10, p. 1505-1511 7 p.

Research output: Contribution to journalArticle

Interferometers
Optics
interferometry
interferometers
optics
2012
2 Citations (Scopus)

Analysis of inter-symbol-interference caused by shift misalignment of two objective lenses in high-NA micro holographic storage

Min, C. K., Kim, D. H., Jeon, S., Park, K. S., Park, Y. P., Yang, H., Park, N. C. & Kim, J., 2012 Sep 1, In : Microsystem Technologies. 18, 9-10, p. 1623-1631 9 p.

Research output: Contribution to journalArticle

numerical aperture
misalignment
Lenses
recording
lenses
8 Citations (Scopus)

An auto-focus lens actuator using ionic polymer metal composites: Design, fabrication and control

Kim, C., Kim, S. J., Yang, H., Park, N. C. & Park, Y. P., 2012 Oct 1, In : International Journal of Precision Engineering and Manufacturing. 13, 10, p. 1883-1887 5 p.

Research output: Contribution to journalArticle

Lenses
Actuators
Fabrication
Composite materials
Polymers
9 Citations (Scopus)

Application of solid immersion lens-based near-field recording technology to high-speed plasmonic nanolithography

Park, K. S., Kim, T., Lee, W. S., Joe, H. E., Min, B. K., Park, Y. P., Yang, H., Kang, S. M. & Park, N. C., 2012 Aug 1, In : Japanese journal of applied physics. 51, 8 PART 3, 08JF01.

Research output: Contribution to journalArticle

Nanolithography
submerging
Lenses
near fields
recording
6 Citations (Scopus)

Line tracking applied data acquisition method for holographic data storage system

Lee, J. S., Kim, N., Lim, S. Y., Kim, J. H., Park, K. S., Park, N. C., Yang, H. & Park, Y. P., 2012 Aug 1, In : Japanese Journal of Applied Physics. 51, 8 PART 3, 08JD07.

Research output: Contribution to journalArticle

data storage
data acquisition
Data acquisition
Computer systems
Pixels
32 Citations (Scopus)

Novel mechanisms and simple locomotion strategies for an in-pipe robot that can inspect various pipe types

Lee, D., Park, J., Hyun, D., Yook, G. & Yang, H. S., 2012 Oct 1, In : Mechanism and Machine Theory. 56, p. 52-68 17 p.

Research output: Contribution to journalArticle

Pipe
Robots
Inspection
6 Citations (Scopus)

Pattern analysis for tilt servo control in holographic data storage system

Kim, J. H., Yang, H., Kim, N., Jeong, W. & Park, J. B., 2012 Sep 1, In : Microsystem Technologies. 18, 9-10, p. 1677-1692 16 p.

Research output: Contribution to journalArticle

data storage
Computer systems
Data storage equipment
Fuzzy rules
fuzzy systems
1 Citation (Scopus)

Practical Implementation of the Normalized Dynamic Energy Stability Margin for Wheeled Robots

Yuk, G. H., Cho, W. H. & Yang, H. S., 2012 Dec 1, In : International Journal of Precision Engineering and Manufacturing. 13, 1, p. 49-56 8 p.

Research output: Contribution to journalArticle

Robots
Sensors
Mobile robots
Computer simulation
3 Citations (Scopus)

Tracking servo method for holographic data storage using discrete pre-patterns

Lim, S. Y., Kim, N., Jung, K., Lee, J. S., Kang, Y. K., Yang, H., Park, K. S., Park, N. C. & Park, Y. P., 2012 Sep 1, In : Microsystem Technologies. 18, 9-10, p. 1711-1717 7 p.

Research output: Contribution to journalArticle

data storage
recording
Data storage equipment
Hard disk storage
error signals
2011
5 Citations (Scopus)

Applications of next generation optical data storage technologies

Park, N. C., Park, Y. P., Park, K. S. & Yang, H., 2011 Mar 1, In : IEEE Transactions on Magnetics. 47, 3, p. 669-678 10 p., 5721851.

Research output: Contribution to journalArticle

Optical data storage
Nanolithography
Imaging systems
Lenses
Optics

Focusing error detection method in microholographic data storage system using polarization characteristics

Kim, T., Im, C. H., Lee, S. H., Kim, N., Park, N. C., Yang, H., Park, Y. P. & Park, K. S., 2011 Sep 1, In : Japanese Journal of Applied Physics. 50, 9 PART 2, 09ME07.

Research output: Contribution to journalArticle

Diffraction efficiency
polarization characteristics
Error detection
data storage
Polarization
7 Citations (Scopus)

High-speed gap servo control for solid-immersion-lens-based near-field recording system with a flexible optical disk

Hwang, H., Kim, J. G., Song, K. W., Park, K. S., Park, N. C., Yang, H., Rhim, Y. C. & Park, Y. P., 2011 Sep 1, In : Japanese journal of applied physics. 50, 9 PART 2, 09MC04.

Research output: Contribution to journalArticle

Data transfer rates
optical disks
submerging
Lenses
near fields
2 Citations (Scopus)

Improved air gap control with acceleration feedforward controller using time delay for solid immersion lens-based near-field storage system

Kim, J. G., Hwang, H. W., Park, K. S., Park, N. C., Yang, H., Park, Y. P. & Jeong, J., 2011 Mar 1, In : IEEE Transactions on Magnetics. 47, 3, p. 556-559 4 p., 5721871.

Research output: Contribution to journalArticle

Lenses
Time delay
Controllers
Air
Contacts (fluid mechanics)

Improved safety mode considering external shock direction for near-field recording system using SIL

Hwang, H., Kim, J. G., Park, K. S., Park, N. C., Yang, H. & Park, Y. P., 2011 Jun 1, In : Microsystem Technologies. 17, 5-7, p. 1091-1098 8 p.

Research output: Contribution to journalArticle

submerging
Lenses
safety
near fields
recording
11 Citations (Scopus)

Increasing the storage density of a page-based holographic data storage system by image upscaling using the PSF of the Nyquist aperture

Lee, S. H., Lim, S. Y., Kim, N., Park, N. C., Yang, H. S., Park, K. S. & Park, Y. P., 2011 Jun 20, In : Optics Express. 19, 13, p. 12053-12065 13 p.

Research output: Contribution to journalArticle

data storage
point spread functions
apertures
optical density
bit error rate
1 Citation (Scopus)

Micro holographic recording characteristic with defocused micrograting

Min, C. K., Kim, D. H., Kim, N., Park, N. C., Park, K. S., Yang, H. S. & Park, Y. P., 2011 Mar 1, In : IEEE Transactions on Magnetics. 47, 3, p. 581-584 4 p., 5721850.

Research output: Contribution to journalArticle

Diffraction efficiency
Optical systems
Diffraction
Wavelength
Direction compound
38 Citations (Scopus)

Normal-force control for an in-pipe robot according to the inclination of pipelines

Park, J., Hyun, D., Cho, W. H., Kim, T. H. & Yang, H. S., 2011 Dec 1, In : IEEE Transactions on Industrial Electronics. 58, 12, p. 5304-5310 7 p., 5648345.

Research output: Contribution to journalArticle

Force control
Pipelines
Pipe
Robots
Sensors
3 Citations (Scopus)

Optical design of a single-sided microholographic data-storage system using a diffractive optical element and a blue laser

Lee, S. H., Park, N. C., Yang, H., Park, K. S. & Park, Y. P., 2011 May 1, In : Journal of Optics. 13, 5, 055403.

Research output: Contribution to journalArticle

Diffractive optical elements
Optical design
data storage
Data storage equipment
Lasers
4 Citations (Scopus)

Tracking servo method using reflective optical filter for holographic data storage system

Song, H. C., Kim, N., Kim, D. H., Lim, S. Y., Cho, J. H., Yang, H., Park, N. C., Park, K. S. & Park, Y. P., 2011 Jun 1, In : Microsystem Technologies. 17, 5-7, p. 1057-1066 10 p.

Research output: Contribution to journalArticle

Optical filters
optical filters
data storage
Computer systems
Data storage equipment
2010
13 Citations (Scopus)

Dead-reckoning sensor system and tracking algorithm for 3-D pipeline mapping

Hyun, D., Yang, H. S., Park, H. S. & Kim, H. J., 2010 Mar 1, In : Mechatronics. 20, 2, p. 213-223 11 p.

Research output: Contribution to journalArticle

Pipelines
Sensors
Units of measurement
MEMS
Navigation
2 Citations (Scopus)

Improved antishock air-gap control algorithm with acceleration feedforward control for high-numerical aperture near-field storage system using solid immersion lens

Kim, J. G., Shin, W. H., Hwang, H. W., Jeong, J., Park, K. S., Park, N. C., Yang, H., Park, Y. P., Park, J. M., Son, D. H., Seo, J. K. & Choi, I. H., 2010 Aug 1, In : Japanese journal of applied physics. 49, 8 PART 3, 08KC06.

Research output: Contribution to journalArticle

Acceleration control
feedforward control
Feedforward control
numerical aperture
submerging
3 Citations (Scopus)

Improved gap servo system using a brake pulse for a SIL-based near-field recording system

Kim, J. G., Kang, M. S., Shin, W. H., Park, N. C., Yang, H. S., Park, Y. P., Lee, J., Jeong, A., Shin, J. & Lee, K., 2010 Jan 1, In : Microsystem Technologies. 16, 1-2, p. 309-315 7 p.

Research output: Contribution to journalArticle

brakes
Servomechanisms
Brakes
submerging
Lenses
4 Citations (Scopus)

Radial tilt compensation method of holographic disk drive

Kim, N., Yoon, P., Kim, K., Park, G. & Yang, H., 2010 Feb 1, In : Optical Review. 17, 1, p. 10-13 4 p.

Research output: Contribution to journalArticle

Bragg angle
digital data
data storage
32 Citations (Scopus)

Variable stiffness mechanism for human-friendly robots

Hyun, D., Yang, H. S., Park, J. & Shim, Y., 2010 Jun 1, In : Mechanism and Machine Theory. 45, 6, p. 880-897 18 p.

Research output: Contribution to journalArticle

Stiffness
Robots
Magnets
Loads (forces)
Experiments
2009
15 Citations (Scopus)

Anti-shock air gap control for SIL-based near-field recording system

Kim, J. G., Kim, W. C., Hwang, H. W., Shin, W. H., Park, K. S., Park, N. C., Yang, H. & Park, Y. P., 2009 May 1, In : IEEE Transactions on Magnetics. 45, 5, p. 2244-2247 4 p., 4816008.

Research output: Contribution to journalArticle

Lenses
Air
Controllers
Servomechanisms
Rotating disks
5 Citations (Scopus)

Design of micromirror actuator by ionic polymer metal composites

Yun, H. U., Kim, C. J., Kim, S. J., Park, N. C., Yang, H. & Park, Y. P., 2009 Oct, In : Microsystem Technologies. 15, 10-11, p. 1531-1538 8 p.

Research output: Contribution to journalArticle

Polymers
Actuators
actuators
Metals
composite materials
4 Citations (Scopus)

Design of tracking servo control system for holographic data storage

Yang, J., Yang, H. S., Kim, S. H., Park, J. Y. & Park, Y. P., 2009 Jan 1, In : Microsystem Technologies. 15, 10-11, p. 1711-1717 7 p.

Research output: Contribution to journalArticle

data storage
Control systems
Data storage equipment
Bit error rate
Semiconductor lasers
15 Citations (Scopus)

Differential optical navigation sensor for mobile robots

Hyun, D., Yang, H. S., Park, H. R. & Park, H. S., 2009 Dec 1, In : Sensors and Actuators, A: Physical. 156, 2, p. 296-301 6 p.

Research output: Contribution to journalArticle

navigation
robots
Mobile robots
Navigation
sensors
7 Citations (Scopus)

Effect of air bearing surface on shock resistance of optical head for solid immersion lens based near field recording system

Lee, Y., Lee, Y. E., Kim, K. H., Kim, S., Yang, H., Park, Y. P. & Park, K. S., 2009 May 1, In : IEEE Transactions on Magnetics. 45, 5, p. 2236-2239 4 p., 4816007.

Research output: Contribution to journalArticle

Bearings (structural)
Lenses
Air
Stiffness
Wire
11 Citations (Scopus)

Improved air gap controller for solid immersion lens-based near-field recording servo system

Kim, J. G., Shin, W. H., Jeong, J., Park, K. S., Park, N. C., Yang, H. & Park, Y. P., 2009 Mar 1, In : Japanese journal of applied physics. 48, 3 PART 2, 03A044.

Research output: Contribution to journalArticle

Servomechanisms
submerging
Lenses
near fields
controllers
1 Citation (Scopus)

Improvement of protection process using observer for soild imersion lens-based near-field recording

Hwang, H., Kim, S. H., Kim, J. G., Kwon, T. W., Yang, H., Park, N. C. & Park, Y. P., 2009 Mar 1, In : Japanese journal of applied physics. 48, 3 PART 2, 03A046.

Research output: Contribution to journalArticle

Lenses
near fields
recording
lenses
shock
3 Citations (Scopus)

New multiplexing method of holographic data storage system

Kim, J. H., Kim, S. H., Yang, H., Park, J. B. & Park, Y. P., 2009 Oct, In : Microsystem Technologies. 15, 10-11, p. 1753-1761 9 p.

Research output: Contribution to journalArticle

data storage
multiplexing
Multiplexing
Computer systems
Data storage equipment
2 Citations (Scopus)

Ramp tolerance analysis considering geometric errors

Kim, K. H., Lee, Y., Kim, S., Yang, H., Park, Y. P., Park, K. S., Yoo, J. & Kim, C. S., 2009 May 1, In : IEEE Transactions on Magnetics. 45, 5, p. 2284-2287 4 p., 4816009.

Research output: Contribution to journalArticle

Unloading
Bearings (structural)
Limiters
Air
6 Citations (Scopus)

Tilt detection and servo control method for the holographic data storage system

Kim, S. H., Kim, J. H., Yang, J., Yang, H., Park, J. Y. & Park, Y. P., 2009 Oct, In : Microsystem Technologies. 15, 10-11, p. 1695-1700 6 p.

Research output: Contribution to journalArticle

data storage
Data storage equipment
Photopolymers
Mirrors
Detectors
5 Citations (Scopus)

Tilt Error Measurement and Compensation Method for the Holographic Data Storage System Using Disturbance Observer

Kim, S. H., Kim, J. H., Lee, Y., Yang, H., Park, J. Y., Park, K. S. & Park, Y. P., 2009 May 1, In : IEEE Transactions on Magnetics. 45, 5, p. 2248-2251 4 p., 4815995.

Research output: Contribution to journalArticle

Measurement errors
Data storage equipment
Controllers
Multiplexing
Signal to noise ratio