Doris Po Ching Chan

Title: Innovations of Doris Po Ching Chan

Introduction

Doris Po Ching Chan is a notable inventor based in Santa Clara, CA (US). She has made significant contributions to the field of equalizer circuitry, holding a total of 4 patents. Her work focuses on enhancing the performance and adaptability of electronic systems.

Latest Patents

One of her latest patents is titled "Offset cancellation in equalizer circuitry." This invention describes an equalizer circuitry that includes an equalizer stage with a programmable current source designed to cancel voltage offset. In one implementation, the programmable current source can be adjusted in user mode. The circuitry also features multiple equalizer stages, with the programmable current source being the second stage. Additionally, the programmable current source comprises several current sources connected in parallel, each controlled by a set of control switches. Each current source includes a transistor, and the control switches consist of pairs of transistors that manage the respective current sources.

Another significant patent is "Adaptation circuitry and methods for decision feedback equalizers." This invention involves decision feedback equalizer (DFE) circuitry that determines the coefficients used in its taps based on the algebraic sign of the current error signal and previous serial data signal values. By utilizing algebraic sign information instead of full error signal values, the circuitry simplifies the process of determining tap coefficients. The DFE circuitry is adaptive, allowing it to automatically adjust tap coefficients in response to changing serial data signal transmission conditions.

Career Highlights

Doris Po Ching Chan is currently employed at Altera Corporation, where she continues to innovate in the field of electronic circuitry. Her work has had a significant impact on the development of advanced equalizer technologies.

Collaborations

Doris has collaborated with several talented individuals, including Thungoc M Tran and Simardeep Maangat. These collaborations have contributed to her success and the advancement of her inventions.

Conclusion

Doris Po Ching Chan is a pioneering inventor whose work in equalizer circuitry has led to multiple patents and advancements in electronic technology. Her contributions continue to influence the field and inspire future innovations.