Inventors with similar research interests:
Location History:
- Austin, TX (US) (2004 - 2016)
- Cedar Park, TX (US) (2011 - 2020)
- Medina, MN (US) (2015 - 2023)
Company Filing History:
60 out of 16,497 
4 out of 205 
4 out of 15,619 
Years Active: 2004-2025
Areas of Expertise:
Title: Innovator Spotlight: Hisao M. Chang
Introduction:
Hisao M. Chang is a prominent inventor based in Austin, TX, known for his significant contributions to the field of technology and innovation. With an impressive portfolio of 76 patents, his work primarily focuses on methods and systems for human activity tracking, which enhances our understanding of environmental interactions in built spaces.
Latest Patents:
Among his most recent inventions are groundbreaking patents that address human activity tracking within buildings. One notable patent outlines methods and systems for identifying human activity by storing room sound profiles based on background audio captured in the absence of humans. This innovative approach allows for the generation of background noise filters that enhance real-time audio analysis, leading to the identification of sounds related to human activity. Additionally, another patent discusses a system and method for identifying activity in an area by utilizing both video cameras and audio sensors, which enables event recognition even in poor visibility conditions.
Career Highlights:
Hisao has worked with several esteemed companies that have allowed him to refine his innovative skills and contribute significantly to technological advancements. Notably, he has been associated with AT&T Intellectual Property I, L.P. and SBC Properties, L.P. His work in these firms has focused on creating solutions that merge audio and visual analytics for improved human activity detection.
Collaborations:
Throughout his career, Hisao M. Chang has collaborated with various professionals, including notable coworkers Bernard S. Renger and John M. Martin. Their collective expertise and collaboration have further enriched the quality and impact of his innovative projects.
Conclusion:
Hisao M. Chang exemplifies a dedicated inventor whose innovative spirit has led to multiple patents and significant advancements in human activity tracking technologies. His continued contributions promise to deepen our understanding of environmental interactions, paving the way for safer and more responsive living spaces.