Manabu Shirasaka

Title: **Manabu Shirasaka: Innovator in Facsimile Technology**

Introduction

Manabu Shirasaka, based in Katsuta, Japan, is an inventor recognized for his contributions to facsimile technology. With one patent to his name, Shirasaka has made significant advancements that enhance the efficiency of communication through facsimile machines.

Latest Patents

Shirasaka's notable patent is a "Facsimile receiving method and facsimile apparatus." This innovative design features a facsimile apparatus capable of ringing a telephone to signal a call. If the apparatus does not detect an off-hook status within a predetermined period, it transmits a voice message informing the calling station of the recipient's absence and that facsimile communication is possible. Additionally, the apparatus sends a called station identification signal (CED) after a silence interval of approximately five seconds. This intelligent design ensures that no telephone call charges are incurred if the sender recognizes the absence of the receiver during the ringing period. The silence interval also allows for the CED signal to remain undetected by the calling station following the voice message.

Career Highlights

Manabu Shirasaka is employed by Hitachi, Ltd., where he has been able to hone his skills as an inventor. His work at this prestigious company has allowed him to collaborate with other talented professionals in the field, furthering his impact on technological advancements.

Collaborations

During his career, Shirasaka has had the opportunity to work alongside notable colleagues, including Teiji Okamoto and Fumitaka Ito. This collaboration has fostered an environment of creativity and innovation, leading to the successful development of new technologies and improvements in existing ones.

Conclusion

Manabu Shirasaka remains a significant figure in the realm of facsimile technology. His innovative patent contributes to the evolution of communication methods, showcasing the importance of continual research and development in this field. With dedicated professionals like Shirasaka at the helm, the future of inventions in telecommunications looks promising.