Cupertino, CA, United States of America

Ying-chang Chen

This inventor holds 1 USPTO granted patent. Top assignee: Integrated Telecom Express, Inc.. Active years: 2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ying-chang Chen. Retrieved from https://idiyas.com/inventor/ying-chang-chen-3udtjmxh

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2002

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1 patent (USPTO):Explore Patents

Title: Ying-chang Chen: Innovator in Tone Detection Technology

Introduction: Ying-chang Chen is a notable inventor based in Cupertino, CA, who has made significant contributions to the field of telecommunications. His innovative work focuses on developing advanced tone detection technologies that enhance signal processing capabilities.

Latest Patents: Ying-chang Chen holds a patent for a "Circuit and method for detecting a tone signal." This invention features a tone detector that utilizes a single phase reference matcher to perform convolution of an input signal with a reference signal. The system compares the convolution result with a threshold to determine the presence of a tone. If no match is found, a phase shifter delays the reference signal to introduce a phase shift, allowing for repeated operations to ensure accurate tone detection.

Career Highlights: Ying-chang Chen is currently employed at Integrated Telecom Express, Inc., where he continues to develop innovative solutions in telecommunications. His work has been instrumental in advancing the technology used in tone detection, making it more efficient and reliable.

Collaborations: Ying-chang Chen has collaborated with talented colleagues such as Man Ho Ku and Wai-Hung Leung, contributing to a dynamic work environment that fosters innovation and creativity.

Conclusion: Ying-chang Chen's contributions to tone detection technology exemplify the impact of innovative thinking in telecommunications. His patent and ongoing work at Integrated Telecom Express, Inc. highlight his commitment to advancing the field.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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