Fumiaki Shigeoka

Title: Fumiaki Shigeoka: Innovator in Semiconductor Technology

Introduction

Fumiaki Shigeoka is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 6 patents. His innovative work has paved the way for advancements in electronic components and systems.

Latest Patents

One of Shigeoka's latest patents is a semiconductor protection circuit. This circuit features a current fuse and a transistor connected in series between a power supply terminal and ground. A bias circuit is included between the base and emitter of the transistor, applying a constant bias voltage that is lower than the normal environment temperature forward voltage of a p-n junction. This design allows the transistor to turn on when a load connected to the current fuse overheats, effectively protecting the circuit.

Another notable patent is a pattern recognition method using fuzzy neurons. This method determines whether a fuzzy symbol matches a predetermined reference pattern by generating membership functions that represent identifying features of the reference pattern. The process involves sampling the fuzzy symbol to create an input pattern, transforming it into an inverted input pattern, and comparing both patterns with membership functions to assess their match. If the quantities of identifying features are sufficiently high, the fuzzy symbol is determined to match the reference pattern.

Career Highlights

Fumiaki Shigeoka is currently employed at Rohm Co., Ltd., a leading company in semiconductor manufacturing. His work at Rohm has allowed him to focus on developing innovative solutions that enhance the performance and reliability of electronic devices.

Collaborations

Shigeoka has collaborated with notable colleagues, including Masanari Oh and Eiichi Sakao. These partnerships have contributed to the successful development of his patents and innovations.

Conclusion

Fumiaki Shigeoka's contributions to semiconductor technology demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of electronic systems and their protection, making him a valuable figure in the field.