Donald M Lee

Title: The Innovations of Donald M. Lee

Introduction

Donald M. Lee is a notable inventor based in San Jose, California. He has made significant contributions to the field of technology, particularly in the area of clock recovery and amplification systems. With a total of 2 patents, his work has had a lasting impact on electronic engineering.

Latest Patents

One of his latest patents is a "Clock recovery apparatus with means for sensing an out of lock condition." This invention allows for the detection of an out of lock condition on a data transition basis in clock recovery apparatus. When such a condition is sensed, a range sweeping signal is generated and combined with the correction signal to adjust the frequency of the clock signal. This ensures that the voltage-controlled oscillator (VCO) remains phase locked. The mechanism utilizes a D flip-flop to sense the out of lock condition, providing a reliable method for maintaining synchronization.

Another significant patent is the "Variable gain wideband bipolar monolithic amplifier." This amplifier features a Darlington configuration of bipolar transistors and includes a resistive shunt feedback loop that controls its gain. The feedback loop incorporates a field effect transistor (FET) that varies the impedance, allowing for adjustable gain in response to a control voltage. This innovative design enhances the performance of the amplifier while minimizing power consumption.

Career Highlights

Donald M. Lee has had a distinguished career at Hewlett-Packard Company, where he has been instrumental in developing advanced electronic solutions. His expertise in circuit design and signal processing has contributed to the company's reputation for innovation in technology.

Collaborations

Throughout his career, Donald has collaborated with various professionals, including his coworker Benny W. Lai. Their joint efforts have led to advancements in electronic systems and have fostered a culture of innovation within their team.

Conclusion

Donald M. Lee's contributions to the field of electronics through his patents and work at Hewlett-Packard Company highlight his role as a significant inventor. His innovative designs continue to influence the industry and pave the way for future advancements.