Tadao Takeda

TL;DR: In this paper, a 1-chip microcomputer with a monitor flag for setting a flag indicating that a specified address space is accessed, an access permission address range setting register, for setting an address range in which an access is permitted while the flag is set, and access permission area detection circuit for judging whether the access is made within the address range thus set.

TL;DR: In this paper, the authors proposed to erase secret information and to preserve required information upon detecting a physical attack from the outside, where a sensor element 2 detects the physical attack and a voltage monitoring mechanism 8 monitors the output voltage of a battery 7.

TL;DR: In this article, a rectifier circuit is used to acquire driving electric power for its own apparatus from the electromagnetic wave received at the antenna circuits, and a constant voltage circuit is employed to convert the output voltage of the rectifier to a constant value.

TL;DR: In this paper, the authors found octahedral void defects in the bulk of silicon wafers by using infrared tomography, and they found that a 2-nm-thick layer exists on the side walls of the void defects.