Company Filing History:
Years Active: 2010-2011
Title: Chia-Jen Yu: Innovator in RFID Technology
Introduction
Chia-Jen Yu is a notable inventor based in Taipei County, Taiwan. He has made significant contributions to the field of radio frequency identification (RFID) technology. With a total of 2 patents, his work focuses on enhancing the efficiency and effectiveness of RFID systems.
Latest Patents
Chia-Jen Yu's latest patents include an innovative RFID reader and a circuit and method for echo cancellation thereof. This echo cancellation circuit is designed to improve the performance of RFID readers by incorporating a gain calculator, a gain adjustment circuit, and a subtraction circuit. The gain calculator utilizes an adaptive algorithm to provide a complex gain value based on a carrier signal and a received signal. The gain adjustment circuit then multiplies the carrier signal by this complex gain value, while the subtraction circuit subtracts the output from the received signal to produce the final output signal of the echo cancellation circuit.
Another significant patent is a method and system for reading RFID tags. This method involves receiving a tag signal from the RFID tag and recovering a data clock rate based on the statistics of pulse lengths of the tag signal. It also includes determining a frame synchronization point of a data frame following a preamble in the tag signal through signal correlation. Finally, the data frame is decoded using an adaptive Viterbi algorithm on an extended trellis diagram, which is structured according to the modulation scheme of the data frame and potential variations in the data clock rate.
Career Highlights
Chia-Jen Yu is affiliated with the Industrial Technology Research Institute, where he continues to advance RFID technology. His work has been instrumental in developing systems that enhance the reliability and accuracy of RFID tag reading.
Collaborations
Chia-Jen Yu has collaborated with notable colleagues, including Chih-Hung Lin and Jiunn-Tsair Chen. Their combined expertise has contributed to the successful development of innovative solutions in the field of RFID technology.
Conclusion
Chia-Jen Yu is a prominent inventor whose work in RFID technology has led to significant advancements in the field. His patents reflect a commitment to improving the functionality and efficiency of RFID systems, making him a valuable contributor to technological innovation.