Xin Li

Title: Innovations of Inventor Xin Li

Introduction

Xin Li is a notable inventor based in Princeton, NJ (US). He has made significant contributions to the field of audio data hiding, holding 2 patents that showcase his innovative approaches.

Latest Patents

One of his latest patents is a "Computer-implemented method and apparatus for audio data hiding." This invention involves a method for embedding hidden data within an audio signal. The process begins with receiving an audio signal in a base domain, which is then transformed into a non-base domain, such as the cepstrum domain or LP residue domain. Statistical mean manipulation is applied to selected transform coefficients to embed hidden data, while the introduced distortion is controlled by a psychoacoustic model to maintain the imperceptibility of the embedded data. Additionally, scrambling techniques can be integrated to enhance the security of the data hiding system. This innovative audio data hiding scheme ensures transparent audio quality, sufficient embedding capacity, and high survivability against common signal processing attacks.

Another significant patent by Xin Li is titled "Methods and apparatus for multi-layer data hiding." This invention provides a system and method for embedding multiple layers of hidden data into multimedia data. Initially, a media unit of the multimedia data is evaluated to determine the appropriate embedding procedure. During the first embedding pass, a ruling layer of primary hidden data is embedded into the media unit. In a subsequent embedding pass, a governing layer of secondary hidden data is added on top of the ruling layer. This secondary hidden data contains control information for managing the primary hidden data and the host data. Control information such as error correction data, synchronization data, decoding data, and authentication data is embedded in the governing layer. Various embedding schemes, including base domain and spectrum domain embedding, are employed in this innovative approach.

Career Highlights

Xin Li is currently associated with Matsushita Electric Industrial Co., Ltd., where he continues to develop groundbreaking technologies in audio data hiding.

Collaborations

He has collaborated with notable coworkers, including Hong Heather Yu and Min Wu, contributing to advancements in their respective fields.

Conclusion

Xin Li's innovative work in audio data hiding demonstrates his commitment to advancing technology and enhancing data security. His patents reflect a deep understanding of audio processing and data embedding techniques.