J David Unger

Title: J David Unger: Innovator in Cable Modem Technology

Introduction

J David Unger is a notable inventor based in Windham, NH (US), recognized for his contributions to cable modem technology. He holds 2 patents that showcase his innovative approach to signal processing and modem initialization.

Latest Patents

One of his latest patents is titled "Transmit pre-equalization in a modem environment." This invention measures signal distortion in transmitted signals and generates filter coefficients that are stored in memory. A modulator then creates an intermediate frequency signal, which is input into a programmable predistortion filter. The characteristics of this filter are adjusted using the programmed coefficients, resulting in a filtered signal that is upconverted to a frequency within the transmit frequency band. Another significant patent is the "Method and apparatus for initialization of a cable modem." This invention outlines a method for initializing cable modems over management channels, allowing for a seamless transition to a data channel for operation. This approach overcomes limitations associated with prior art that relied solely on data channel initialization.

Career Highlights

Throughout his career, J David Unger has worked with prominent companies in the telecommunications sector, including Nortel Networks Corporation and Bigband Networks, Inc. His work has significantly impacted the development of modem technology and has contributed to advancements in data transmission.

Collaborations

Unger has collaborated with notable professionals in the field, including John Ulm and Eugene E O'Neil, Jr. These collaborations have further enriched his contributions to the industry.

Conclusion

J David Unger is a distinguished inventor whose work in cable modem technology has paved the way for advancements in data communication. His innovative patents reflect his expertise and commitment to improving modem functionality.