Company Filing History:
Years Active: 2009-2010
Title: Innovations by Hu Saigui in Signal Demodulation
Introduction
Hu Saigui is a notable inventor based in Singapore, recognized for his contributions to the field of signal demodulation. With a total of two patents to his name, he has developed innovative methods and apparatuses that enhance the efficiency of signal processing.
Latest Patents
Hu Saigui's latest patents include an "Apparatus and methods for demodulating a signal" and an "Apparatus and method for demodulating a modulated signal." The first patent describes an apparatus that converts an analogue input signal into a two-level signal through a hard limiter stage. It further includes a digital down converter and low pass filter stage that transforms the signal into a baseband signal, along with a symbol synchronization stage that extracts symbol timing. Additionally, it features an instantaneous phase detector that calculates the phase of the symbols associated with the input signal. The apparatus is designed to work with various modulation schemes, including pi/4DQPSK and GMSK, ensuring accurate demodulation through a differential detector and frequency offset compensation stages.
The second patent outlines a method for demodulating a modulated signal, which involves an analog to digital converter that samples the input signal at a predetermined rate. This digital signal is then processed by a digital down converter, which reduces its frequency, followed by a low pass filter that selects specific frequencies. The frequency offset stage modifies the frequency to minimize offset, allowing the differential demodulator to effectively demodulate the signal.
Career Highlights
Hu Saigui is currently employed at Oki Techno Centre (Singapore) Pte Ltd, where he applies his expertise in signal processing. His work has significantly contributed to advancements in communication technologies.
Collaborations
Throughout his career, Hu has collaborated with notable colleagues such as Wang Tingwu and Tomisawa Masayuki, enhancing the innovation process through teamwork and shared expertise.
Conclusion
Hu Saigui's innovative work in signal demodulation showcases his commitment to advancing technology in the field. His patents reflect a deep understanding of complex signal processing techniques, making significant contributions to the industry.