Location History:
- Ottawa, CA (2004)
- Ontario, CA (2006)
Company Filing History:
Years Active: 2004-2006
Title: The Innovations of Philip Ching
Introduction
Philip Ching is an accomplished inventor based in California, known for his contributions to the field of electronics and telecommunications. With a total of 2 patents, he has made significant advancements that enhance the functionality and efficiency of various systems.
Latest Patents
One of his latest patents is titled "Analog PLL with switched capacitor resampling filter." This invention features a resampler filter designed for use in an analog phase-locked loop, incorporating a charge pump and one or more switched capacitors that are controlled by signals derived from a voltage-controlled oscillator within the loop. Another notable patent is the "Method and apparatus for detecting dual tone alerting signal in telephone systems." This apparatus is capable of operating in at least off-hook mode and includes a processing channel for each tone. Each channel is equipped with a bandsplit filter that extracts the desired tone while attenuating the other. It also features a comparator that compares the output of the bandsplit filter with a threshold value, along with an adaptive threshold generator that adjusts the threshold based on the amplitude of the output, effectively rejecting speech and music imitations. This invention offers improved talkdown and talkoff immunity.
Career Highlights
Philip Ching is currently employed at Zarlink Semiconductor Limited, where he continues to innovate and develop new technologies. His work has had a lasting impact on the industry, particularly in the areas of signal processing and telecommunications.
Collaborations
Throughout his career, Philip has collaborated with notable colleagues, including Robertus Laurentius Van Der Valk and Gerrit Dijkstra. These partnerships have contributed to the successful development of his patents and innovations.
Conclusion
Philip Ching's contributions to the field of electronics and telecommunications are noteworthy, showcasing his expertise and innovative spirit. His patents reflect a commitment to advancing technology and improving system performance.