Company Filing History:
2 out of 52,730 
1 out of 8 Years Active: 1987-1988
Title: W Sherwood Campbell: Innovator in Cable Television Technology
Introduction
W Sherwood Campbell is a notable inventor based in Littleton, CO (US). He has made significant contributions to the field of cable television technology, holding a total of 2 patents. His work has paved the way for advancements in communication systems within the cable television industry.
Latest Patents
One of Campbell's latest patents is a "Cable television communication system with passive sensor signal path." This innovative system includes security means that provide a subscriber's house with a security sensor. When the sensor generates an emergency signal, a transmission path is formed by non-active elements from the security sensor to a trunk cable. An external control unit is designed to check the power supplying state to the security sensor and can communicate with a central station regarding the power source conditions of subscribers.
Another significant patent is the "Communication data processing device of cable television system." This patent describes an external control unit for a CATV system that features a CPU and a RAM with various memory maps. Reference data is transmitted from a central station to be stored in these memory maps. When a subscriber requests the tuning of a TV channel for a pay program, the CPU in the external control unit utilizes the reference data to facilitate the request.
Career Highlights
Throughout his career, Campbell has worked with prominent companies in the industry, including Kabushiki Kaisha Toshiba and American Television and Communications Corporation. His experience in these organizations has contributed to his expertise in cable television technology and innovation.
Collaborations
Some of Campbell's notable coworkers include Akinori Masuko and Robert M Rast. Their collaboration has likely fostered an environment of innovation and creativity in the projects they undertook together.
Conclusion
W Sherwood Campbell's contributions to cable television technology through his patents and career highlights demonstrate his significant impact on the industry. His work continues to influence advancements in communication systems, ensuring a legacy of innovation.