Akiho Doi

Title: Akiho Doi: Innovator in Key Telephone Systems

Introduction

Akiho Doi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications, particularly in the development of key telephone systems. With a total of two patents to his name, Doi's work has advanced the technology used in communication systems.

Latest Patents

Doi's latest patents include a synchronization system for key telephone systems and a reception system for key telephone systems. The synchronization system features a key telephone system that includes multiple key telephone sets and a key service unit. It employs a synchronizing system in each key telephone set to synchronize signal transmissions with the key service unit. This system utilizes multiplexed frequency signals for control and voice transmission, ensuring efficient communication. The reception system also innovates by multiplexing voice and control signals, allowing for improved data transmission during state transitions in the key service unit.

Career Highlights

Akiho Doi has worked at Iwasaki Tsushinki Kabushiki Kaisha, where he has been able to apply his innovative ideas in practical settings. His work has not only contributed to the company's success but has also influenced the broader telecommunications industry.

Collaborations

Doi collaborates with Norio Saneyoshi, a talented woman in the field, who has contributed to the development of key telephone systems alongside him.

Conclusion

Akiho Doi's contributions to key telephone systems demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing communication technology, making a lasting impact in the industry.