Yi-Ching Liao

Title: Yi-Ching Liao: Innovator in Echo Cancellation Technology

Introduction

Yi-Ching Liao is a prominent inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of echo cancellation technology, holding a total of 3 patents. His work focuses on developing advanced methods and devices that enhance audio quality in various applications.

Latest Patents

Yi-Ching Liao's latest patents include a "Feed forward echo cancellation device and echo cancellation method." This innovative device comprises a first impedance circuit, a second impedance circuit, and an echo cancellation current generator circuit. The first impedance circuit is designed to output a first current in response to a transmission current, while the second impedance circuit outputs a second current. The echo cancellation current generator circuit effectively drains an echo cancellation current from the node, which is connected to a programmable gain amplifier circuit via a gain control circuit. The gain control circuit is responsible for setting the gain of the programmable gain amplifier circuit.

Another notable patent is the "Method for calibrating currents, current control system, and voltage control system." This method involves performing a first sorting operation on multiple first current sources based on their generated current levels. It also includes a second sorting operation on a plurality of second current sources. The process determines switching sequences for both sets of current sources, ensuring that they achieve the same target current value.

Career Highlights

Yi-Ching Liao is currently employed at Realtek Semiconductor Inc., a leading company in the semiconductor industry. His work at Realtek has allowed him to apply his innovative ideas and contribute to the development of cutting-edge technologies.

Collaborations

Throughout his career, Yi-Ching Liao has collaborated with talented individuals such as Chien-Wen Chen and Chih-Yu Chen. These collaborations have fostered a creative environment that encourages the exchange of ideas and advancements in technology.

Conclusion

Yi-Ching Liao is a distinguished inventor whose work in echo cancellation technology has made a significant impact in the field. His innovative patents and contributions to Realtek Semiconductor Inc. highlight his dedication to advancing audio technology.