Location History:
- Grass Valley City, CA (US) (1990)
- Grass Valley, CA (US) (1987 - 1991)
Company Filing History:
3 out of 6 
1 out of 21,351 
1 out of 10 Years Active: 1987-1991
Title: Innovations of James S. Mackley
Introduction
James S. Mackley is a notable inventor based in Grass Valley, California. He holds a total of four patents, showcasing his contributions to the field of telecommunications. His innovative designs focus on enhancing communication technologies, particularly in video and picturephone systems.
Latest Patents
Mackley's latest patents include a "Conversational Video Phone" and a "Still Picture Picturephone Communications System." The Conversational Video Phone is an advanced device that transmits a source image over standard telephone lines alongside audio signals. It features a unique initialization protocol that allows for asynchronous transmission, ensuring efficient communication. The system incorporates various technical elements, such as a hardware preamble for synchronizing the receiver clock and automatic gain control adjustments.
The Still Picture Picturephone Communications System enables the transmission and reception of still images over telephone circuits. This system includes a handshaking process that transmits identification code data before the still picture is sent. It allows for direct transmission of still picture data without handshaking, enhancing the user experience. Additionally, it supports the transmission of character data and facilitates communication between multiple parties.
Career Highlights
Throughout his career, James S. Mackley has worked with several prominent companies, including Luma Telecom Incorporated and Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in telecommunications and innovation.
Collaborations
Mackley has collaborated with notable individuals in the field, including Lawrence D. Emmons and David H. Stokes. Their combined efforts have likely influenced the development of his innovative technologies.
Conclusion
James S. Mackley's contributions to telecommunications through his patents reflect his dedication to innovation. His work continues to impact the way we communicate today.