Location History:
- Kanagawa, JP (1986 - 1989)
- Yokohama, JP (1986 - 1998)
Company Filing History:
Years Active: 1986-1998
Title: Masuo Tamada: Innovator in IC Card Technology
Introduction
Masuo Tamada is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of integrated circuit (IC) card technology, holding a total of 13 patents. His work focuses on enhancing the functionality and security of IC cards, which are widely used in various applications today.
Latest Patents
Tamada's latest patents include an IC card and issuing apparatus that allows for multiple applications. This innovative card contains an IC chip equipped with a CPU and memory. When inserted into a terminal device, it connects to a host computer, enabling the processing of data stored in the memory of the IC card. The memory is designed with multiple zones, and an access controller is integrated into the IC chip. The card issuer can program access conditions for each zone, ensuring secure and controlled access.
Another notable patent is for an IC card with a stored data change inhibition function. This invention features a nonvolatile memory that includes an area defining information section. This section stores information corresponding to user data write areas. Each area defining information contains identification details that indicate whether the corresponding user data write area can be modified. If a command to change stored data is issued from a keyboard, the control element checks the identification information to determine if the change is permissible. If not, the control element inhibits any changes to the designated user data write area.
Career Highlights
Masuo Tamada is currently employed at Kabushiki Kaisha Toshiba, a leading technology company known for its innovative solutions. His work at Toshiba has allowed him to develop cutting-edge technologies that enhance the functionality of IC cards.
Collaborations
Throughout his career, Tamada has collaborated with notable colleagues, including Hitoshi Kokuryo and Shinsuke Tamura. These collaborations have contributed to the advancement of technology in the field of IC cards.
Conclusion
Masuo Tamada's contributions to IC card technology have significantly impacted the industry. His innovative patents demonstrate his commitment to enhancing security and functionality in electronic devices. His work continues to influence the development of advanced technologies in the field.