Kabushiki Kaisha Toshiba

Unitika Ltd.

Toska Co., Ltd.

Tetsuro Wada

Yutaka Murao

Yasuo Ohkubo

Katsumi Matsumura

According to the present invention, there is provided a security thread whose existence is not clarified, which is prevented beforehand from being removed, which can be attached even to a form of a commodity heretofore regarded as difficult, and whose use purpose range is enlarged, and the security thread can be constituted by a core member comprising a soft magnetic fiber () or the soft magnetic fiber and a core thread (), and a cover member () comprising a nonmetal material to cover the core member, constituted by covering the core member comprising the soft magnetic fiber or the soft magnetic fiber and core thread and a semi-hard magnetic material (') with the cover member, or constituted by covering the soft magnetic fiber or the core member comprising the soft magnetic fiber and a thermal welding thread () with the cover member.

Security yarn and production method therefor

To increase the kinds of executable instructions of a microcomputer without increasing the number of bits (e.g. 8 bits) constituting one word or instruction, that is, without decreasing the execution speed or increasing the ROM usage, two or more instruction groups including instructions of different kinds, respectively, are provided operation modes are determined for the respective instruction groups; and the respective instruction groups to be executed are switched according to the respective operation modes. The microcomputer includes an instruction register, an execution control unit, a mode memory flip-flop, gates, two predecoders, a programmable logic array, an arithmetic logic unit, etc. The ordinary and special instruction groups can be selected in response to an interrupt entry signal and an interrupt return signal and a specific bit of an instruction, for instance.

Microcomputer using specific instruction bit and mode switch signal for

A power voltage drop detecting circuit includes VDD and ground terminals supplied with power voltage VD, a resistor connected at one end to the VDD terminal, a MOS transistor connected between the other end of the resistor and the ground terminal, and a CMOS inverter for producing an output signal according to a voltage at the junction between the resistor and the MOS transistor. The detecting circuit further includes a control pad connected to the control gate of the n-channel MOS transistor and supplied with control voltage VC at different levels in the test mode and detect modes, respectively.

Growing community of inventors

Yokohama, Japan

Tetsuro Wada