This inventor holds 2 USPTO granted patents. Top assignee: Northern Telecom Limited. Active years: 1983-1992.
Location History:
- Vanier, CA (1983)
- Ottawa, CA (1992)
Company Filing History:
Years Active: 1983-1992
Title: Innovative Contributions of John R. Long in Liquid Crystal Display Technology
Introduction
John R. Long, an esteemed inventor based in Ottawa, Canada, has made significant contributions to technology with two notable patents. His work primarily focuses on enhancing the performance of liquid crystal displays (LCDs) and developing advanced methods for aligning clock signals.
Latest Patents
Among his latest inventions, the "Digital Phase Aligner and Method for its Operation" innovatively aligns the phase of a local clock signal with incoming data signals. This method involves delaying the data signal and regenerating it with a local clock signal, effectively detecting the phase difference. Continuous adjustments ensure the local clock signal remains in approximate alignment with the data signal, which is particularly beneficial for high-speed packet switches.
Another significant patent is the "Addressing Scheme for Switch Controlled Liquid Crystal Displays." This patent addresses the challenges in controlling matrix multiplexed LCDs. By utilizing a series of unipolar pulses in the addressing waveform, it minimizes transient effects and maximizes the RMS voltage applied to selected pixels. This enhancement improves the displays' contrast ratio and multiplexing capabilities while ensuring the net DC current remains zero, preventing any degradation of the liquid crystal.
Career Highlights
John R. Long is associated with Northern Telecom Limited, a company renowned for its innovations in telecommunications technology. His work within this organization has driven forward vital advancements in display technology and digital signal processing.
Collaborations
Throughout his career, John has collaborated with fellow innovators such as Carla J. Miner and Richard W. Streater. These partnerships have facilitated the exchange of ideas and contributed to the successful development of his patented technologies.
Conclusion
John R. Long's inventive spirit and technical expertise continue to impact the fields of telecommunications and display technologies. His contributions not only showcase his skills as an inventor but also underscore the importance of collaboration in innovation. With his patents, he remains a prominent figure in technological innovation from Ottawa, Canada.