This inventor holds 1 USPTO granted patent. Top assignee: Headway Technologies, Incorporated. Active years: 2021.
Company Filing History:
Years Active: 2021
Title: Innovations by Sui Yan Chan in Hard Disk Drive Technology
Introduction
Sui Yan Chan is a notable inventor based in Hong Kong, CN. He has made significant contributions to the field of hard disk drive (HDD) technology. His innovative work focuses on optimizing write current waveforms to enhance track density in HDDs.
Latest Patents
Sui Yan Chan holds a patent for "Circuits and methods for modifying the write current waveform to improve track density in HDD." This patent describes a preamplifier equipped with a pre-compensation circuit that optimizes the write current in a low current range of less than 30 mA. The pre-compensation circuit is designed to maintain peak current with a high overshoot current amplitude, which is essential for achieving optimized areal density capability. This technology equalizes the erase widths for bit lengths of encoded data, particularly for those with bit lengths greater than three clock time periods, as well as for encoded data with a bit length of two clock time periods. Additionally, the pre-compensation circuit includes an overshoot generator that determines the optimum amplitude of the overshoot current based on the bit lengths of the encoded data. An overshoot data synchronizer is connected to a read current preamplifier to receive a pseudorandom read data signal, which is applied to the overshoot generator to enable varying overshoot current amplitudes depending on the bit length of the encoded data. The pre-compensated data current is then transferred to the write head.
Career Highlights
Sui Yan Chan is currently employed at Headway Technologies, Incorporated, where he continues to develop innovative solutions in HDD technology. His work has been instrumental in advancing the capabilities of data storage devices.
Collaborations
He collaborates with talented coworkers, including Yuhui Tang and Ying Liu, who contribute to the innovative environment at Headway Technologies.
Conclusion
Sui Yan Chan's contributions to HDD technology through his patent demonstrate his commitment to innovation and excellence in the field. His work not only enhances the performance of hard disk drives but also sets a foundation for future advancements in data storage technology.