Hidehito Aoyagi

Title: Innovations of Hidehito Aoyagi

Introduction

Hidehito Aoyagi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications, particularly in the area of multichannel receivers. With a total of 5 patents to his name, Aoyagi's work has had a substantial impact on the efficiency and reliability of data transmission.

Latest Patents

One of Aoyagi's latest patents is focused on the synchronization of multichannel receivers based on higher-quality channels. This innovation allows for stable timing synchronism even when transmission channels experience deterioration due to fading. The system employs multiple power detectors to measure the quality of baseband signals across various channel lines, generating a quality signal. Additionally, equalizers produce timing phase deviation signals for these channels. A selecting circuit then chooses at least one channel line based on the quality signal, while a frequency controlling circuit generates a frequency control signal to manage the sampling frequency of a circuit that converts transmitted signals into digital form. This method ensures that the timing phase control is established with stability.

Another notable patent involves a method of synchronizing parallel channels of orthogonally multiplexed signals. In this process, a reference data sequence is transmitted to a first automatic equalizer in a reference channel. The transmitted reference data is utilized to establish initial equalization for this equalizer. Simultaneously, the reference data sequence is scrambled and used to set up another automatic equalizer, which receives a data sequence derived from the scrambled reference data. This dual approach enhances the overall synchronization process.

Career Highlights

Hidehito Aoyagi is currently employed at NEC Corporation, a leading technology company known for its innovations in information technology and communications. His work at NEC has allowed him to collaborate with other talented professionals in the field, further advancing the development of cutting-edge technologies.

Collaborations

One of Aoyagi's notable coworkers is Botaro Hirosaki. Their collaboration has contributed to the successful development of various projects within NEC Corporation.

Conclusion

Hidehito Aoyagi's contributions to the field of telecommunications through his innovative patents have significantly enhanced the reliability of data transmission systems. His work continues to influence advancements in technology, making him a key figure in the industry.