Location History:
- Ontario, CA (1987)
- Toronto, CA (1989)
- Willodale, CA (1989)
- Willowdale, CA (1989)
Company Filing History:
Years Active: 1987-1989
Title: **Inventor Profile: William F. Van Rassel**
Introduction
William F. Van Rassel is an esteemed inventor based in Ontario, California, known for his innovative contributions to the field of subscription television technology. With a total of 7 patents to his name, Van Rassel has made significant strides in enhancing the security and functionality of media transmission systems.
Latest Patents
Among his recent inventions, two notable patents stand out. The first patent outlines a **Method for controlling copying of protected information transmitted over** a subscription television system. This system employs a transmitter that integrates a data insertion circuit. This circuit inserts a control bit into a transmitted signal containing both control data and protected program material. The receiver accesses a pre-assigned subscriber identification, and upon detecting the control bit, integrates this identification into the program material, ensuring any unauthorized copies can be traced back to the subscriber.
The second patent describes a **Communications format for a subscription television system permitting** individual decoders to receive specifically addressed messages. This subscription television system transmits a composite signal that includes video, teletext, and individual addressed packets which notify decoders of incoming messages tailored for specific subscribers. Notably, both addressed packets and teletext messages are encrypted, enhancing the security of the transmission. The teletext messages are released only after the corresponding addressed packet has been properly decrypted, demonstrating an advanced layer of security.
Career Highlights
William F. Van Rassel has had a distinguished career working with Scientific-Atlanta, Inc., a leading company in the field of telecommunications equipment. His innovations have not only expanded the capabilities of subscription television systems but have also set new standards for security measures within the media distribution industry.
Collaborations
Throughout his career, Van Rassel has collaborated with notable colleagues including Keith Lucas and Nigel Seth-Smith. These partnerships have facilitated the development of groundbreaking technologies that address contemporary challenges in television broadcasting and information security.
Conclusion
William F. Van Rassel remains a pivotal figure in the realm of telecommunications, particularly in subscription television technology. With his array of patents, he continues to influence the development of secure and efficient media transmission systems, showcasing the importance of innovation and collaboration in advancing technological frontiers.
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.