Kabushiki Kaisha Toshiba

Akiyasu Yamamoto

Hiroyuki Sakamoto

Tetsuya Kitamura

Takeshi Kumagaya

Takeo Arafune

Toshiaki Shirasuna

Tadatoshi Ishii

Yuichi Sekizawa

Yuuichi Goto

A control method for a non-contact communication apparatus communicating information to an external device in a non-contact state is provided. The control method includes the steps of stopping an operation of a control circuit after the control circuit performs a predetermined control operation when processing operations relating to the writing and reading of information is to be executed, and executing a predetermined process by an execution circuit which is scheduled to operate next under control by a logical circuit with the control circuit kept stopped when the supply voltage reaches a predetermined value with the result that a load is applied to the supply power supplied from outside.

Non-contact communication apparatus and control method for non-contact communication apparatus

A one-chip fuzzy processing apparatus is constituted by integrating a grade calculation circuit for obtaining the grades of IF part membership functions corresponding to a variable value, a THEN part membership function generator for generating THEN part membership functions, a combining circuit for modifying the THEN part membership functions, and combining the modified membership functions, and a defuzzify circuit for defuzzifying the output from the combining circuit. The combining circuit includes a circuit for obtaining a minimum value of grades of the IF part membership functions for each fuzzy rule, a circuit for comparing an obtained minimum value with a THEN part membership function for each fuzzy rule to cut a peak of the THEN part membership function, and a maximum processor for combining the THEN part membership functions by obtaining a maximum value of the modified THEN part membership functions. The defuzzify circuit includes a circuit for obtaining a center of gravity of the membership function combined by the combining circuit. The THEN part membership function generator is constituted by a counter, and a circuit for sequentially outputting the grades of the THEN part membership functions using the count values from the counter as x-coordinate values.

Fuzzy rule-based system formed on a single semiconductor chip

Growing community of inventors

Kanagawa-ken, Japan

Akiyasu Yamamoto