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Years Active: 2002-2005
Title: Shivani Gupta: Innovator in CMOS Image Sensor Technology
Introduction
Shivani Gupta is a notable inventor based in Milpitas, CA (US). She has made significant contributions to the field of image sensor technology, holding a total of 3 patents. Her work focuses on enhancing the performance and efficiency of CMOS image sensors.
Latest Patents
One of her latest patents is titled "High voltage reset method for increasing the dynamic range of a CMOS image sensor." This invention presents a circuit and method designed to increase the dynamic range of CMOS image sensors that utilize a thin gate oxide layer. The circuit comprises a high voltage supply circuit and a high voltage level shifter circuit. The high voltage supply circuit is configured to provide a voltage to the shifter circuit, which exceeds the maximum supply voltage of the associated fabrication process. The shifter circuit outputs a high reset signal based on a reset signal generated to reset a pixel circuit of a pixel array. This high reset signal allows the reset transistor to maintain a gate to source potential that is less than the maximum supply voltage, even when the high reset signal surpasses this voltage.
Another significant patent is the "Constant voltage charge-pump circuit with feedback." This charge-pump circuit generates a constant voltage that is higher than the available power supply. A feedback path is integrated to maintain the voltage at a constant level, despite variations in power supply, temperature, and fabrication processes. The circuit includes a switched capacitor interface that generates a target voltage, which is used to activate and deactivate a bypass capacitor interface, ensuring the constant voltage is maintained.
Career Highlights
Shivani Gupta has worked with prominent companies such as National Semiconductor Corporation and Eastman Kodak Company. Her experience in these organizations has allowed her to develop and refine her innovative ideas in the field of electronics and imaging technology.
Collaborations
Throughout her career, Shivani has collaborated with talented individuals, including Christina P. Phan and Willem J. Kindt. These collaborations have contributed to her success and the advancement of her inventions.
Conclusion
Shivani Gupta is a pioneering inventor whose work in CMOS image sensor technology has led to significant advancements in the field. Her innovative patents and collaborations highlight her dedication to improving electronic imaging systems.