Yi-Shih Wang

Title: The Innovations of Yi-Shih Wang

Introduction

Yi-Shih Wang is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of optical disc technology, holding a total of 4 patents. His work focuses on improving the efficiency and effectiveness of optical drives, which are essential in data storage and retrieval.

Latest Patents

One of Yi-Shih Wang's latest patents is a method for determining focusing error gain for accessing optical discs. This innovative approach involves using a control feature zone on the label side of a light-scribe optical disc to record reference information. The optical head is moved within the label zone to determine a first focusing error (FE) gain and a first sub-beam addition (SBAD) signal. By further moving the optical head into the control feature zone, a second SBAD signal is obtained. The ratio of the first and second SBAD signals is then utilized to estimate a second FE gain for accessing the control feature zone.

Another significant patent by Wang is a method of erasing an erasable disc. This method revolutionizes the conventional erase mode by employing a write mode during the erasure of a DVD-RW disc. In this write mode, the invention ensures that the laser diode outputs a constant erase power, regardless of changes in the write pulse signal. This allows the optical drive to complete the disc erasing operation efficiently without the need for continuous detection of the Land Pre-Pit (LPP) data block.

Career Highlights

Yi-Shih Wang is currently employed at Lite-On IT Corporation, a leading company in the optical storage industry. His work at Lite-On has positioned him as a key player in advancing optical disc technologies. His innovative patents have contributed to the company's reputation for excellence in data storage solutions.

Collaborations

Wang has collaborated with several talented individuals in his field, including Tao-Yen Wei and Chih Wei Huang. These collaborations have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Yi-Shih Wang's contributions to optical disc technology through his patents and work at Lite-On IT Corporation highlight his importance as an inventor. His innovative methods for improving optical drives demonstrate his commitment to advancing technology in this field.