Company Filing History:
Years Active: 2025
Title: Tzu-Hsu Chen: Innovator in Anti-Spoofing and Sound Localization Technologies
Introduction
Tzu-Hsu Chen is a notable inventor based in Tainan, Taiwan. He has made significant contributions to the fields of authentication systems and sound localization technologies. With a total of 2 patents, his work is recognized for its innovative approach to enhancing security and audio processing.
Latest Patents
One of Tzu-Hsu Chen's latest patents is an anti-spoofing authentication system. This system includes an image capture device that converts received light into an image signal representing a captured image. It also features a microphone that converts sound waves into a voice signal, along with a face detection device that identifies human faces in the captured image. This device includes a lip detection component that recognizes lip features associated with the detected face. Additionally, a voice activity detection (VAD) device is incorporated to detect the presence of human voice in the voice signal. The anti-spoofing device then assesses potential spoofing attacks based on the detected lip features and human voice.
Another significant patent is a sound source localization system. This system comprises a microphone array made up of multiple microphones, each converting sound waves into corresponding voice signals. It includes a room shape estimator that determines the room's shape, producing a location map and a corresponding template voice feature map. This map consists of template voice features linked to a virtual sound source at various locations. The system outputs a room reliability score, indicating confidence in the determined room shape. A lookup table (LUT) pre-stores the location map and template voice feature map, while a localizer determines the sound source's location based on room reliability and the similarity between the voice feature and template voice features.
Career Highlights
Tzu-Hsu Chen is currently employed at Himax Technologies, Inc., where he continues to develop innovative technologies. His work has positioned him as a key figure in the advancement of security and audio processing systems.
Collaborations
Throughout his career, Tzu-Hsu Chen has collaborated with notable colleagues, including Ti-Wen Tang and Chin-Kuei Hsu. These collaborations have contributed to the development of his innovative patents and technologies.
Conclusion
Tzu-Hsu Chen's contributions to anti-spoofing and sound localization technologies highlight his role as an influential inventor. His patents reflect a commitment