This inventor holds 2 USPTO granted patents. Top assignee: Motorola Corporation. Active years: 1992-2000.
Location History:
- Palatine, IL (US) (1992)
- Grayslake, IL (US) (2000)
Company Filing History:
Years Active: 1992-2000
Title: Douglas W. Main: Innovator in Radiotelephone Technology
Introduction
Douglas W. Main is a notable inventor based in Grayslake, IL (US). He has made significant contributions to the field of radiotelephone technology, holding a total of 2 patents. His work has been instrumental in advancing communication systems.
Latest Patents
One of his latest patents is titled "Method for demand channel change for a radio telephone." This invention involves a radiotelephone system that includes a user interface allowing users to request channel changes from a central device. If a channel change is denied, the system communicates a signal to the user. Additionally, the radiotelephone can conduct a channel scan to identify a new channel.
Another significant patent is "Digitally frequency-locking a radio transceiver to the received signal." This innovation allows a unique cellular telephone to digitally frequency lock to the base station transmitter signal. The system includes a radio transceiver, a reference oscillator, and a microcomputer that controls the operation. The radio transceiver utilizes a phase-locked loop synthesizer, receiver mixer, and other components to generate an intermediate frequency signal, ensuring effective communication.
Career Highlights
Douglas W. Main has had a distinguished career at Motorola Corporation, where he has contributed to various projects and innovations in telecommunications. His expertise in radiotelephone technology has positioned him as a key figure in the industry.
Collaborations
Throughout his career, Douglas has collaborated with notable coworkers such as Paul J. Moller and David K. Ford. These collaborations have further enhanced his contributions to the field.
Conclusion
Douglas W. Main's innovative work in radiotelephone technology has led to significant advancements in communication systems. His patents reflect his commitment to improving user experience and system efficiency.