Sunetra K Mendis

Title: Sunetra K Mendis: Innovator in CMOS Image Sensor Technology

Introduction

Sunetra K Mendis is a notable inventor based in Palo Alto, CA, who has made significant contributions to the field of image sensor technology. With a total of 6 patents to his name, Mendis has developed innovative solutions that enhance the performance of CMOS active pixel image sensors.

Latest Patents

One of Mendis's latest patents focuses on pixel defect correction in a CMOS active pixel image sensor. This invention allows for effectively defect-free images by employing a two-step method. During sensor testing, the addresses of bad pixels are recorded and stored in an on-chip directory. When the sensor is read out, each pixel address is checked against this directory. If a bad pixel is identified, its value is replaced with an average from the nearest non-defective neighbors. This method can also modify final level wiring to disconnect bad pixels at the wafer level.

Another significant patent by Mendis addresses the control of pixel reset levels to reduce image lag in CMOS sensors. This invention provides a method for managing image lag at low light levels by ensuring that the reset level is independent of the preceding signal level. By using either a hard or soft reset based on the signal level, the image quality at low light levels is improved without compromising performance in brighter conditions.

Career Highlights

Throughout his career, Mendis has worked with several companies, including Veridicom, Inc. and Vanguard International Semiconductor Corporation. His experience in these organizations has contributed to his expertise in the development of advanced imaging technologies.

Collaborations

Mendis has collaborated with notable professionals in the field, including Alexander G Dickinson and Ross McPherson. These collaborations have likely enriched his work and led to further advancements in image sensor technology.

Conclusion

Sunetra K Mendis is a distinguished inventor whose work in CMOS image sensor technology has led to significant advancements in the field. His innovative patents demonstrate a commitment to improving image quality and sensor performance.