This inventor holds 3 USPTO granted patents. Top assignee: Siliconsystems, Inc.. Active years: 1989-1990.
Company Filing History:
Years Active: 1989-1990
Title: Innovations by Dave Hedberg
Introduction
Dave Hedberg is an accomplished inventor based in Danville, CA (US). He has made significant contributions to the field of technology, particularly in signal processing and automatic gain control systems. With a total of 3 patents to his name, Hedberg's work has had a notable impact on modern communication systems.
Latest Patents
One of Hedberg's latest patents is the "Phase Jitter Tracker." This invention utilizes a decision-directed error signal as input to a feedback loop, filtering the error signal and coupling it to a phase-locked loop centered at 55 Hz. The design includes a second-order loop to acquire frequency and phase jitter, ensuring that the amplitude is locked to the input signal. The implementation of this jitter tracker is done in a digital signal processor, featuring two filter loops to generate both magnitude and phase error signals.
Another significant patent is the "Method and Apparatus for Two Stage Automatic Gain Control." This invention is designed for use in a modem's receive channel. The first stage, known as the 'coarse' AGC, quickly locks onto large signal transients, while the second stage, the 'fine' AGC, corrects for finer fluctuations using a decision-directed coherent amplitude error signal. This two-stage approach allows for rapid gain changes and minimizes error corruption in data detection.
Career Highlights
Hedberg has been instrumental in advancing technologies that enhance signal processing capabilities. His work at Siliconsystems, Inc. has positioned him as a key player in the development of innovative communication solutions. His patents reflect a deep understanding of the complexities involved in signal processing and automatic gain control.
Collaborations
Throughout his career, Hedberg has collaborated with notable professionals in the field, including Steve Levy and Paul Hurst. These collaborations have contributed to the successful development and implementation of his innovative technologies.
Conclusion
Dave Hedberg's contributions to the field of technology through his patents and work at Siliconsystems, Inc. highlight his expertise and innovative spirit. His inventions, particularly in phase jitter tracking and automatic gain control, continue to influence modern communication systems.