Location History:
- Ottawa, CA (2009)
- Dallas, TX (US) (2009 - 2011)
Company Filing History:
Years Active: 2009-2011
Title: Innovations of Qingjin Du
Introduction
Qingjin Du is a notable inventor based in Dallas, TX (US), recognized for his contributions to the field of serial communications and frequency synthesizer circuitry. With a total of 4 patents, he has made significant advancements that enhance the efficiency and reliability of electronic communications.
Latest Patents
One of his latest patents is focused on zero-delay serial communications circuitry for serial interconnects. This invention provides methods for supporting serial communications between circuit modules with zero delay. The data recovery circuit within this patent receives incoming serial data and utilizes a multiphase clock for sampling. It includes a multiplexer that selects the optimum sampled data signal to recover the data effectively. Additionally, if the clock phase shift error exceeds a predetermined value, the phase pointer signal can be updated to ensure accurate data recovery.
Another significant patent involves frequency synthesizer circuitry employing a delay line. In this invention, a reference clock signal propagates through stages of the delay line, and the currents drawn by output buffers are combined at a common node. This current is then converted to a voltage, which is AC-coupled to an output buffer ring oscillator. The design includes a feedback connection that enhances the performance of the frequency synthesizer.
Career Highlights
Qingjin Du is currently employed at Altera Corporation, where he continues to innovate and develop advanced technologies in the field of electronics. His work has been instrumental in pushing the boundaries of what is possible in serial communications and frequency synthesis.
Collaborations
Throughout his career, Qingjin has collaborated with talented individuals such as Jingcheng Zhuang and Tad Kwasniewski. These collaborations have contributed to the successful development of his patented technologies.
Conclusion
Qingjin Du's innovative work in serial communications and frequency synthesizer circuitry has made a lasting impact on the electronics industry. His patents reflect a commitment to advancing technology and improving communication systems.