Company Filing History:
Years Active: 2002-2005
Title: Innovations of Jack Siu Cheung Lo
Introduction
Jack Siu Cheung Lo is an accomplished inventor based in San Jose, CA. He has made significant contributions to the field of electronics, particularly in the development of advanced clock circuits. With a total of 4 patents to his name, Lo continues to push the boundaries of innovation in his industry.
Latest Patents
One of his notable inventions is a pulse generator with polarity control. This integrated clock doubler and polarity control circuit provides high-speed response between an input signal and an output signal. The circuit achieves clock doubling by passing the input signal through a delay circuit, using the output of the delay circuit to select between two paths for inverting or not inverting the input signal to produce the output signal. In one embodiment, the inverting path is a CMOS inverter with an input terminal receiving the input signal, an output terminal providing the output signal, and power terminals controlled by the delay circuit.
Another significant patent is a clock divider circuit with duty cycle correction and minimal additional delay. This clock divider circuit adds little additional delay on the clock path. Each rising and falling edge of an input clock signal triggers a pulse from a pulse generator circuit. These pulses are passed to a control circuit. True and complement versions of the input clock signal are provided to a multiplexer circuit. Under the direction of the control circuit, the multiplexer circuit passes selected rising edges of the true clock signal and selected falling edges of the complement clock signal to an output clock terminal of the clock divider circuit. When neither the true nor the complement clock signal is passed by the multiplexer, a keeper circuit retains the value already present at the output clock terminal.
Career Highlights
Jack Siu Cheung Lo is currently employed at Xilinx, Inc., where he continues to innovate and develop cutting-edge technologies. His work has had a significant impact on the field of electronics, particularly in the design of clock circuits.
Collaborations
Lo has collaborated with notable colleagues such as Shi-dong Zhou and Shankar Lakkapragada, contributing to various projects and advancements in technology.
Conclusion
Jack Siu Cheung Lo is a prominent inventor whose work in clock circuits has led to several patents and innovations. His contributions continue to shape the future of electronics and inspire new developments in the field.