Xianfu Cheng

Title: Xianfu Cheng: Innovator in High Dynamic Range Imaging

Introduction

Xianfu Cheng is a notable inventor based in Sunnyvale, CA, who has made significant contributions to the field of imaging technology. He is recognized for his innovative work in developing a single-exposure high dynamic range (HDR) image sensor. His invention aims to enhance the quality of images captured in varying lighting conditions.

Latest Patents

Xianfu Cheng holds 1 patent for his groundbreaking invention titled "Single-exposure high dynamic range sensor." This patent describes a sophisticated image sensor that includes a first photodiode and a second photodiode, which has a smaller full-well capacity than the first. The design incorporates a first floating diffusion and a first transfer gate, allowing for efficient charge transfer from the photodiodes. Additionally, an attenuation layer is strategically placed to block a portion of the image light from reaching the second photodiode, optimizing the sensor's performance.

Career Highlights

Cheng is currently employed at Omnivision Technologies, Inc., where he continues to push the boundaries of imaging technology. His work has been instrumental in advancing HDR imaging, which is crucial for applications in photography, videography, and various imaging systems.

Collaborations

Throughout his career, Xianfu Cheng has collaborated with talented individuals such as Dajiang Yang and Oray Orkun Cellek. These collaborations have fostered an environment of innovation and creativity, leading to advancements in imaging technologies.

Conclusion

Xianfu Cheng's contributions to the field of high dynamic range imaging exemplify the impact of innovative thinking in technology. His patent for a single-exposure HDR image sensor showcases his commitment to enhancing image quality in diverse lighting conditions.