Location History:
- Taipei Hsien, TW (2006)
- Taipei, TW (2002 - 2007)
Company Filing History:
Years Active: 2002-2007
Title: Yi-Chung Chan: Innovator in Optical Technology
Introduction
Yi-Chung Chan is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of optical technology, holding a total of 9 patents. His work focuses on methods and devices that enhance the performance and reliability of optical read/write systems.
Latest Patents
One of Yi-Chung Chan's latest patents is a method and device for detecting signals on a disc that has defects by utilizing an RF signal and its derivatives. This device includes a servo control unit, a data path control unit, a defect detection unit, and a logic combination unit. The data path control unit features a preamplifier that receives data from a lens and generates RF signals for data processing. The defect detection unit is designed to receive various signals to detect different kinds of defects, setting corresponding defect flag signals. It includes means for ADefect detection, EFMDefect detection, RPDefect detection, interruption detection, and DSPDefect detection.
Another notable patent is a method and apparatus for long seeking control of a pickup head. This method involves an optical read/write head that includes a sled moved by a sled motor and a lens mounted on the sled, moved by a lens actuator. The method outlines steps for determining a velocity profile based on the desired travel distance of the optical read/write head, detecting instant velocity and position, comparing instant velocity with target velocity, and dynamically adjusting the position of the lens.
Career Highlights
Yi-Chung Chan has worked with several companies, including Via Technologies, Inc. and Via Optical Solution, Inc. His experience in these organizations has allowed him to develop innovative solutions in optical technology.
Collaborations
Throughout his career, Yi-Chung Chan has collaborated with notable individuals such as Chih-Yang Liaw and Yi-Lin Lai. These collaborations have contributed to the advancement of his inventions and patents.
Conclusion
Yi-Chung Chan is a distinguished inventor whose work in optical technology has led to multiple patents and innovative solutions. His contributions continue to impact the field significantly.