Location History:
- South Portland, ME (US) (1995)
- Cumberland, ME (US) (2002 - 2004)
Company Filing History:
Years Active: 1995-2004
Title: The Innovations of Brett J Grandchamp
Introduction
Brett J Grandchamp is a notable inventor based in Cumberland, Maine, with a significant contribution to the field of signal multiplexing. He holds six patents that showcase his expertise in combining television signals and optimizing signal transmission.
Latest Patents
One of his latest patents is the "Multiplexer for Adjacent NTSC and DTV Channels." This invention involves a signal multiplexer that effectively combines NTSC and DTV signals from adjacent television channels into a composite signal for transmission. The design incorporates separate hybrid couplers and band pass filters to produce quadrature phase signals, which are then combined to create multiplexed signals. Additionally, a notch filter is utilized to reflect the aural component of the NTSC signal, ensuring a high-quality output.
Another significant patent is the "Signal Multiplexer and Method." This invention is designed for N channel signals of different frequency bands and utilizes only N+1 hybrid couplers. It presents a constant impedance to the transmitters supplying the N channel signals. The outputs from matched band pass filters are combined to form quadrature phase multiplexed channel signals, which are then converted into a single multiplexed output signal.
Career Highlights
Brett has worked with prominent companies such as General Signal Corporation and Spx Corporation, where he applied his innovative ideas to real-world applications. His work has significantly impacted the field of telecommunications and signal processing.
Collaborations
Throughout his career, Brett has collaborated with talented individuals, including William A DeCormier and Cole Nason Plummer. These partnerships have contributed to the development of his groundbreaking inventions.
Conclusion
Brett J Grandchamp's contributions to signal multiplexing through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the telecommunications industry, paving the way for future advancements in signal processing technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.