Company Filing History:
Years Active: 1990
Title: Tutomu Ojima: Innovator in Noncontacting IC Card Technology
Introduction
Tutomu Ojima is a notable inventor based in Mizusawa, Japan. He has made significant contributions to the field of integrated circuit technology, particularly in the development of noncontacting IC cards. His innovative approach has led to advancements that enhance the functionality and efficiency of electronic payment systems.
Latest Patents
Ojima holds a patent for a noncontacting IC card supplied with power from an outside source. This IC card, which can be utilized as a cash card, features a RAM, a control circuit for managing access to the RAM, and a power supply circuit that receives energy from an external source. The design includes a first voltage detector that generates a starting output when the supply voltage exceeds a predetermined first reference voltage. Additionally, a second voltage detector produces a control signal when the supply voltage surpasses a higher predetermined second reference voltage. An AND gate is incorporated to generate a RAM control signal, enabling the RAM to operate when both the starting signal and control signal are present.
Career Highlights
Ojima is currently employed at Citizen Watch Company, Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of electronic devices, particularly in the realm of contactless payment solutions.
Collaborations
Throughout his career, Ojima has collaborated with talented individuals such as Yoshiaki Kato and Harumi Yuyama. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
Tutomu Ojima's contributions to the field of noncontacting IC card technology exemplify his dedication to innovation. His patent and ongoing work at Citizen Watch Company, Ltd. highlight his role as a key figure in advancing electronic payment systems.