Xinyu Ma

Title: Xinyu Ma: Innovator in Adaptive Anti-Crosscolor Notch Filtering

Introduction

Xinyu Ma is a notable inventor based in San Diego, CA. She has made significant contributions to the field of digital filtering, particularly in the development of technologies that enhance video signal processing. Her innovative work has led to the creation of a unique patent that addresses color crosstalk in SECAM encoders.

Latest Patents

Xinyu Ma holds a patent for an "Adaptive anti-crosscolor notch filter for SECAM encoder." This invention features a luminance notch filter that adaptively attenuates a SECAM luminance signal based on the strength of the luminance signal. The technology employs digital filtering techniques to prevent color crosstalk effectively. The adaptive luminance notch filter includes a bandpass filter centered at the chrominance band, which processes the input luminance signal to produce a bandpass filtered luminance signal. This signal is then multiplied by a gain factor, and the resulting luminance signal is subtracted from the input luminance signal to yield a notch filtered luminance signal. A detector linked to the bandpass filter output monitors the signal strength, allowing the gain factor to be adjusted according to the detected signal strength. The bandpass filter utilizes an infinite impulse response (IIR) filter, specifically an all-pole IIR filter of at least third order.

Career Highlights

Xinyu Ma is currently employed at Tiernan Communications, Inc., where she continues to innovate and develop advanced technologies in signal processing. Her work has garnered attention for its practical applications in improving video quality and reducing interference in SECAM encoding.

Collaborations

Xinyu collaborates with talented colleagues, including Regan Myers and Eric Johnson. Their combined expertise contributes to the success of projects at Tiernan Communications, Inc.

Conclusion

Xinyu Ma's contributions to the field of digital filtering and her innovative patent demonstrate her commitment to advancing technology in video signal processing. Her work not only enhances the quality of video signals but also showcases the importance of adaptive filtering techniques in modern applications.