Fang-Wei Chang

Title: Fang-Wei Chang and Optical Recording Innovation.

Introduction

Fang-Wei Chang is an inventor based in Taipei, Taiwan. His patent work includes an optical recording technology designed to improve write-focus calibration.

Latest Patents

Chang is associated with 1 patent: “Optical Recording Apparatus Capable of Optimizing Write Defocus and Method Thereof.” The invention describes an optical pickup that directs signals onto an optical medium and detects their reflections, alongside a focus motor and controller that adjust the lens position. During writing, the controller calibrates the defocus for the target medium to determine an optimal value. For a multilayer disc, calibration is performed on the layer intended for writing. If the optimal value differs from the starting value, the updated value is stored.

Career Highlights

Chang’s listed company affiliation is BenQ Corporation. His patent focuses on optimizing write defocus during optical recording.

Collaborations

Chang’s listed coworkers include Chi-Hung Chen and William Wai Wang.

Conclusion

Fang-Wei Chang’s patent describes a calibration approach that adjusts and stores write-defocus settings for optical media, including multilayer discs.