Guoxiao Guo Guoxiao Guo
Guoxiao Guo, Jingliang Zhang, Zhimin He, Eng Hong Ong: Active control system and method for reducing disk fluttering induced track misregistrations. Agency for Science Technology and Research, Renner Otto Boisselle & Sklar, May 3, 2005: US06888694 (35 worldwide citation)

The present invention relates to controlling an actuator for positioning a read/write head in storage devices such as disk drives. More specifically, the invention relates to using a sensor to detect the disk vibration amplitude perpendicular to the disk surface, and using feed forward control to ca ...

Guoxiao Guo Guoxiao Guo
Wai Ee Wong, Guoxiao Guo, Abdullah Al Mamun, Weichun Ye, Jingliang Zhang: Detection of track misregistration within user data channel. Agency for Science Technology and Research, Haynes and Boone, March 7, 2006: US07009805 (16 worldwide citation)

A method for computing position error signal information of a transducer in a data storage system provides for different readback signals between adjacent tracks. The method involves a computation to obtain coarse position information from the servo bursts signals for track seeking and a computation ...

Guoxiao Guo Guoxiao Guo
Jingliang Zhang, Branislav Hredzak, Qing Li, Guoxiao Guo: Disk drive clock tracking circuit, error compensation circuit and method. Agency for Science Technology and Research, Dinsmore & Shohl, March 10, 2009: US07502186

A clock tracking circuit and method uses a clock compensation signal to compensate for timing marks on a media disk. The clock compensation signal may compensate for at least one of improper clock track closure and written-in jitter of the timing marks used to produce the measured clock signal. The ...


Bo Liu, Zhimin Yuan: Method and implementation of in-situ absolute head medium spacing measurement. Agency for Science Technology and Research, Martine Penilla & Gencarella, March 21, 2006: US07016131 (47 worldwide citation)

In a method based on readback signal for in-situ measuring of absolute head-medium spacing, a pre-encoded pattern in the magnetic medium on a disk has at least two harmonics with amplitudes such that a linear function of the logarithmic ratio of the spacing loss-term is formed in relation to testing ...

Yansheng Ma, Bo Liu, Leonard Gonzaga: Hard disk drive slider. Agency for Science Technology and Research, Conley Rose P C, August 20, 2013: US08514521 (4 worldwide citation)

A hard disk drive system is provided. The hard disk drive system includes a hard disk and at least one slider structure for reading data from and writing data onto the hard disk. The hard disk includes a plurality of layers, and at least a topmost one of the plurality of layers comprises a lubricant ...

Qi Tian
Wei Xiong, Qi Tian, Joo Hwee Lim: Method and system for generating an entirely well-focused image of a large three-dimensional scene. Agency for Science Technology and Research, Christie Parker & Hale, December 11, 2012: US08331627 (3 worldwide citation)

A method and system for generating an entirely well-focused image of a three-dimensional scene. The method comprises the steps of a) learning a prediction model including at least a focal depth probability density function (PDF), h(k), for all depth values k, from historical tiles of the scene; b) p ...

Zhimin Yuan, Bo Liu, Boon Hao Low, Tiejun Zhou, Siang Huei Leong, Mingsheng Zhang: Method and data storage device for laser free heat-assisted magnetic recording. Agency for Science Technology and Research, Blakely Sokoloff Taylor & Zafman, July 29, 2014: US08792211 (1 worldwide citation)

A data storage device with a heat assisted magnetic recording (HAMR) system, a magnetic recording medium, and method for data storage are provided. The data storage device includes a magnetic recording medium, a magnetic recording head, a power supply, a controller and a switching device. The magnet ...

Zhimin Yuan, Bo Liu, Jiangzhong Shi, Weidong Zhou: Medium, method of fabricating a medium, recording system and method of controlling a recording system. Agency for Science Technology and Research, Blakely Sokoloff Taylor & Zafman, October 21, 2014: US08867171 (1 worldwide citation)

A medium may be provided. The medium includes a servo layer, a data recording layer, and a heat sink layer disposed between the servo layer and the recording layer.

Siang Huei Leong, Zhimin Yuan, Bo Liu: Method and system for obtaining n and k map for measuring fly-height. Agency for Science Technology and Research, Harness Dickey & Pierce, June 28, 2011: US07969573

A method for obtaining a refractive index (n) and extinction coefficient (k) map of a slider surface, the method comprising the steps of processing an image of the slider surface to obtain spatially resolved normalized intensity data of the slider surface; measuring n and k values of the slider surf ...