Location History:
- Tokyo, JP (1989)
- Kodaira, JP (1990 - 2003)
Company Filing History:
4 out of 42,496 
2 out of 832,843 Years Active: 1989-2003
Title: Yasushi Hatta: Innovator in Optical Technology
Introduction
Yasushi Hatta is a notable inventor based in Kodaira, Japan. He has made significant contributions to the field of optical technology, holding a total of 6 patents. His work primarily focuses on the development of optical receivers, which play a crucial role in modern communication systems.
Latest Patents
One of Yasushi Hatta's latest patents involves an advanced optical receiver. This optical receiver generates a voltage signal with a predetermined swing from a current signal and feeds this voltage signal to a decision circuit. An optical receiving element is responsible for receiving the input optical signal, converting it into a current signal, and providing this current signal to a preamplifier. The preamplifier then converts the input current signal into a voltage signal. The voltage signal is subsequently input to an amplifier with a limiting function, which linearly amplifies the voltage signal when its swing is smaller than a predetermined value. When the voltage signal exceeds this predetermined value, the amplifier limits the amplification. An automatic-gain-control amplifier receives the output from the limiting amplifier and amplifies the input voltage signal to achieve a constant swing. Finally, the decision circuit receives the output from the automatic-gain-control amplifier and determines the binary nature of the voltage, thus interpreting the input optical signal.
Career Highlights
Yasushi Hatta has had a distinguished career, working with prominent companies such as Hitachi, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in optical technology.
Collaborations
Throughout his career, Yasushi has collaborated with talented individuals, including Kenichi Ohhata and Ryoji Takeyari. These collaborations have fostered an environment of innovation and creativity, leading to advancements in their respective fields.
Conclusion
Yasushi Hatta's contributions to optical technology through his patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence advancements in communication systems and optical technology.