Wen-Wei Chiang

Title: Innovations by Wen-Wei Chiang in Data Recording Technology

Introduction

Wen-Wei Chiang is a notable inventor based in San Jose, CA, who has made significant contributions to the field of data recording technology. With a total of 2 patents, his work focuses on enhancing the efficiency and accuracy of data recording systems.

Latest Patents

Chiang's latest patents include a "Servo-writing system for use in a data recording disk drive" and "Wavefront reconstruction optics for use in a disk drive position." The servo-writing system is a non-invasive technology that measures actuator position and generates a reference clock using semiconductor lasers. It employs reflective diffraction gratings affixed to the actuator arm and spindle hub to provide internal position references. The system utilizes wavefront reconstruction optics to correct for aberrations in the gratings, ensuring precise measurements of actuator position. The optical sensors detect differential changes in the diffraction patterns, which helps eliminate sensitivity to frequency drift. The control electronics drive the voice coil motor within the disk drive, positioning the write transducer to record servo information accurately.

The second patent, concerning wavefront reconstruction optics, describes an optical measurement system that compensates for aberrations in laser beams reflected from diffraction gratings. This system includes two spherical lenses and two reflectors, which work together to measure the position of either a linear or rotary actuator. The accurate measurement generated by this system is crucial for timing the recording of servo information onto the data recording disk.

Career Highlights

Wen-Wei Chiang is currently employed at International Business Machines Corporation (IBM), where he continues to innovate in the field of data recording technology. His work has been instrumental in advancing the capabilities of disk drives, making them more efficient and reliable.

Collaborations

Chiang has collaborated with notable colleagues, including Chih-Kung Lee and John Stewart Best, contributing to the development of cutting-edge technologies in data recording.

Conclusion

Wen-Wei Chiang's contributions to data recording technology through his innovative patents have significantly impacted the industry. His work at IBM continues to push the boundaries of what is possible in data storage and retrieval systems.