Location History:
- Tokyo, JP (2001)
- Yokohama, JP (2004)
- Kanagawa, JP (2003 - 2023)
Company Filing History:
6 out of 5,290 
4 out of 164 
1 out of 522 Years Active: 2001-2023
Title: **Akihiro Yamagishi: Innovator in Optical Transmission Technologies**
Introduction
Akihiro Yamagishi is a prominent inventor based in Kanagawa, Japan, known for his significant contributions to the field of optical transmission technologies. With a total of eight patents to his name, Yamagishi has developed innovative methods and systems that enhance the performance of optical transmitters and receivers.
Latest Patents
Among his latest patents are an "Optical Transmission Characteristics Compensating Method" and an "Optical Transmission Characteristics Compensating System." These patents address crucial aspects of optical transmission by implementing compensation methods both prior to and subsequent to the optical transmitter. Specifically, the system ensures that the peak-to-average power ratio of the output signal from the transmitter compensation circuitry remains at or below a predetermined threshold. Additionally, Yamagishi has introduced an "Optical Transmission Characteristics Estimation Method" and an "Optical Transmission Characteristics Estimation System," which involve estimating a transfer function of the optical transmitter by analyzing data collected from the optical receiver. This process accounts for various frequency offsets, enhancing the reliability and performance of optical communication.
Career Highlights
Yamagishi's career includes notable positions at prestigious companies such as Nippon Telegraph and Telephone Corporation and NTT Electronics Corporation. His work in these organizations has allowed him to focus on developing cutting-edge technologies that push the boundaries of optical communication.
Collaborations
Throughout his career, Yamagishi has collaborated with distinguished colleagues, including Masanori Nakamura and Asuka Matsushita. These collaborations have fostered an environment of innovation and have led to remarkable advancements in the field.
Conclusion
Akihiro Yamagishi stands out as a pioneering inventor in optical transmission technologies. His extensive patent portfolio reflects his dedication to enhancing the efficiency and effectiveness of optical communication systems. Through his work, Yamagishi continues to make a lasting impact on the field and inspire future innovations.