Seema Varma

Title: Seema Varma: Innovator in Imaging Technology

Introduction

Seema Varma is a prominent inventor based in Sunnyvale, CA, known for her contributions to imaging technology. With a total of 7 patents, she has made significant advancements in the field, particularly in the design and functionality of imaging devices.

Latest Patents

Among her latest patents is the "Correlated double sampling ping-pong architecture." This invention involves a method and apparatus arranged with a correlated double sampler circuit (CDS) for processing output signals from imaging devices such as charge-coupled device (CCD) image sensors. The CDS circuit includes an amplifier and a reduced number of capacitors that are dynamically configured using a ping-pong architecture. This innovative design has relaxed requirements for sampling points, minimized gain mismatch error, and effectively managed offset mismatches. The ping-pong architecture is particularly useful in digital imaging applications, including digital scanners, copiers, cameras, and camcorders.

Another notable patent is the "Programmable gain amplifier with hybrid digital/analog architecture." This invention enables the digitization of scanned images through an Analog Front End (AFE) circuit. The AFE circuit includes a sampler for sampling signals produced by an image sensor, generating analog image samples. It also features a Programmable Gain Amplifier for amplifying these samples and an Analog to Digital Converter for producing digitized samples. The design allows for amplification in both the analog and digital domains, enhancing the quality of scanned images.

Career Highlights

Seema Varma has built a successful career at National Semiconductor Corporation, where she has been instrumental in developing cutting-edge imaging technologies. Her work has significantly impacted the efficiency and effectiveness of imaging devices, making them more accessible and reliable for various applications.

Collaborations

Throughout her career, Seema has collaborated with talented individuals such as Ha Chu Vu and William David Llewellyn. These partnerships have fostered innovation and creativity in her projects, leading to the successful development of her patented technologies.

Conclusion

Seema Varma's contributions to imaging technology through her innovative patents have established her as a leading figure in the field. Her work continues to influence the development of advanced imaging devices, showcasing her dedication to innovation and excellence.