Chung Chu Chang

Title: Innovations of Chung Chu Chang

Introduction

Chung Chu Chang is a notable inventor based in Taipei, Taiwan. He has made significant contributions to the field of technology, particularly in the areas of autofocus methods and multi-parameter inspection systems. With a total of 2 patents, his work reflects a commitment to advancing technological capabilities.

Latest Patents

One of his latest patents is an "Autofocus Searching Method." This method includes several procedures, starting with the calculation of focus values of images acquired during the movement of the object lens. The focus value is derived from the intensity values of the image, which are based on the pixel intensities. The focus searching process utilizes a first focus-searching step constant and a first focus-searching direction. If the focus searching position crosses a peak of the focus values, it is adjusted based on a second focus-searching direction and a second focus-searching step constant, which is smaller than the first.

Another significant patent is the "Method for Enhancing the Measurement Capability of Multi-Parameter Inspection Systems." This method involves performing a measuring procedure to acquire a measured signature of a sample. It calculates weighting factors that represent the correlation between structural parameters of the sample using a weighting algorithm. The method transforms these weighting factors into a sampling function and updates the measured signature to form an updated version. Finally, it compares the updated measured signature with updated nominal signatures to determine the structural parameters of the sample.

Career Highlights

Chung Chu Chang is associated with the Industrial Technology Research Institute, where he continues to innovate and contribute to technological advancements. His work has been instrumental in enhancing the capabilities of inspection systems and autofocus technologies.

Collaborations

Chung has collaborated with notable coworkers, including Jin-Liang Chen and Chi Hong Tung, who have contributed to his research and development efforts.

Conclusion

Chung Chu Chang's innovative patents and contributions to technology demonstrate his expertise and commitment to advancing the field. His work continues to influence the development of new technologies and methodologies.