Location History:
- Croton-on-Hudson, NY (US) (1995 - 1996)
- San Gabriel, CA (US) (1998)
Company Filing History:
2 out of 838 
1 out of 950 
Years Active: 1995-1998
Title: Innovations of Zhi-Yuan Guan
Introduction
Zhi-Yuan Guan is a notable inventor based in Croton-on-Hudson, NY (US). He has made significant contributions to the field of digital television and communication technologies. With a total of 3 patents, his work focuses on improving the reliability and quality of signal transmission.
Latest Patents
One of his latest patents is a method and apparatus for channel identification using incomplete information. This invention utilizes two Least-Squares (LS) estimators to calculate a sequence of channel values. It aims to determine an estimated channel impulse response over an entire frequency band, even when the information is incomplete or unreliable. The LS estimators are designed to operate when the estimated channel impulse response span is less than that of a known test signal, which is transmitted over the channel for identification purposes.
Another significant patent is a multiplexed modulation system for robust audio digital television. This invention provides a method and apparatus for transmitting a digital television signal using a single QAM (quadrature amplitude modulated) carrier. It delivers audio and video data packets at respective complex symbol data rate levels, resembling the audio vs. video reception characteristics of conventional analog television.
Career Highlights
Zhi-Yuan Guan has worked with prominent companies such as Philips Electronics North America Corporation and North American Philips Corporation. His experience in these organizations has contributed to his expertise in the field of digital communication technologies.
Collaborations
Throughout his career, Zhi-Yuan has collaborated with notable individuals, including Samir N. Hulyalkar and David A. Bryan. These collaborations have likely enriched his work and led to innovative solutions in his field.
Conclusion
Zhi-Yuan Guan's contributions to the field of digital television and communication technologies are noteworthy. His innovative patents demonstrate his commitment to enhancing signal transmission and improving user experience. His work continues to influence the industry and pave the way for future advancements.