Location History:
- Chichou Hsiang, TW (1998 - 1999)
- Changhua Hsien, TW (1999 - 2000)
Company Filing History:
Years Active: 1998-2000
Title: Pei-Yih Liu: Innovator in Optical Drive Technology
Introduction
Pei-Yih Liu is a notable inventor based in Changhua Hsien, Taiwan. He has made significant contributions to the field of optical drive technology, holding a total of 4 patents. His work focuses on improving the efficiency and accuracy of read/write heads in optical drives.
Latest Patents
One of Liu's latest patents is a focusing and tracking method and system for the read/write head of an optical drive. This innovative system is capable of detecting both the focusing error and the tracking error of the read/write head, allowing for precise control during read operations. The method combines a knife-edge focusing technique with a push-pull tracking method, utilizing a specially designed photo detector to obtain error signals. This design simplifies the structural complexity of the system, reducing manufacturing costs and avoiding cross-talk between error signals.
Another significant patent is the two-wavelength laser pick-up head for DVDs. This device is designed for accessing various optical media, including DVDs, CDs, CD-Rs, and CD-Es. It features a shorter wavelength laser optical path for reading DVDs and a longer wavelength path for CDs, both using the same collimator and objective lens. A compensator lens is included to correct spherical aberration, enhancing the performance of the system.
Career Highlights
Pei-Yih Liu is associated with the Industrial Technology Research Institute, where he has been instrumental in advancing optical drive technologies. His work has not only contributed to the efficiency of optical drives but has also paved the way for future innovations in the field.
Collaborations
Liu has collaborated with notable colleagues such as Tsung-Ming Yang and Shin-Ter Tsai, further enhancing the research and development efforts within his team.
Conclusion
Pei-Yih Liu's contributions to optical drive technology through his innovative patents demonstrate his expertise and commitment to advancing the field. His work continues to influence the design and functionality of optical media systems, making a lasting impact on the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.