Dan Xu

Title: Dan Xu - Innovator in Information Systems and Communication Technology

Introduction

Dan Xu is a prominent inventor based in Fujisawa, Japan. He has made significant contributions to the fields of information systems and communication technology. With a total of 3 patents to his name, Xu continues to push the boundaries of innovation.

Latest Patents

One of Xu's latest patents is an information system and information collection method. This invention is designed to acquire desired site data while preventing an increase in cost. The system includes a link logic definition unit that holds a link logic, which defines a correspondence relation between an item value of the site data and a reference value that is an external value of transaction data used for acquiring the item value. Additionally, a link logic data acquisition unit is responsible for acquiring the item value of the site data by utilizing the link logic.

Another notable patent is an orthogonal frequency division multiplexing (OFDM) demodulator. This innovative demodulator does not require a reference signal for synchronization of carriers, which helps reduce the influence of phase rotation by a propagation path during carrier synchronization. The OFDM demodulator performs Fourier transforms multiple times across two or more different operation ranges for the same OFDM symbol. It calculates the phases of subcarriers from the results of these Fourier transforms, compares the calculated phases, and detects any errors in the frequency of the reproduction carrier based on the comparison results.

Career Highlights

Dan Xu is currently employed at Hitachi, Ltd., where he applies his expertise in developing advanced technologies. His work has been instrumental in enhancing the efficiency and effectiveness of information systems and communication methods.

Collaborations

Xu collaborates with talented individuals such as Thanh Hai Vo and Shinichi Nakamura. Their combined efforts contribute to the innovative projects at Hitachi, Ltd.

Conclusion

Dan Xu is a remarkable inventor whose work in information systems and communication technology has led to significant advancements. His patents reflect his commitment to innovation and his ability to solve complex problems in the field.