Chen-Fong Liao

Title: Innovations of Chen-Fong Liao

Introduction

Chen-Fong Liao is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of electronics, particularly in amplifier systems. With a total of three patents to his name, Liao's work showcases his expertise and innovative spirit.

Latest Patents

One of Liao's latest patents is an amplifier system that includes an output circuit, a processor circuit, a feedback circuit, and a controller circuit. This system is designed to output an output signal while returning a digital output feedback signal. The processor circuit plays a crucial role by receiving a filtered error audio signal and outputting a pulse width modulation control signal to the output circuit. Additionally, the feedback circuit contains an addition unit that adds the negative value of the digital output feedback signal to the digital input signal to obtain the error audio signal. A variable filter unit within the feedback circuit filters the error audio signal and outputs the filtered error audio signal. The controller circuit adjusts parameters of the compensation unit based on a pre-compensation signal to change the gain characteristics of the variable filter unit.

Another significant patent is a power amplifying circuit that consists of a signal modification circuit, a power stage circuit, and a boost converter circuit. The signal modification circuit generates a modified signal based on an input signal. The power stage circuit amplifies this modified signal and generates an output signal. The boost converter circuit selectively controls the amplitude of the first voltage, allowing the signal modification circuit to dynamically adjust its gain according to the value of the first voltage.

Career Highlights

Chen-Fong Liao is currently employed at Realtek Semiconductor Inc., a leading company in the semiconductor industry. His work at Realtek has allowed him to develop innovative technologies that enhance audio and signal processing.

Collaborations

Liao collaborates with Yi-Chang Tu, a talented woman in the field, contributing to the advancement of their projects and innovations.

Conclusion

Chen-Fong Liao's contributions to amplifier systems and power amplifying circuits highlight his innovative capabilities and dedication to advancing technology. His work continues to influence the electronics industry positively.