Fujitsu Corporation

Ntt Docomo, Inc.

Wataru Hamada

Yoshihiro Ono

Hideaki Watanabe

Takahiro Shin

Naoki Naruse

Hisashi Yoshinaga

Hideyuki Nagasawa

Yuko Nakajima

Kenetsu Furuki

Yuji Takemoto

Shinichiro Inui

Toshiharu Hagii

Hui Young Kang

Masashi Tagawa

Takayuki Ebara

A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.

Light guide mechanism for guiding a light to an illuminance sensor

To provide a technology for making it possible to control enable/disable of an IC card function provided in a mobile device. A mobile device including an IC card unit for executing an IC card function, and a communication unit for carrying out communication through a radio telephone line detects a voltage of a battery unit for supplying an electric power to each of the IC card unit and the communication unit, judges whether or not the IC card function can be used in accordance with the detected voltage value, and issues an enable/disable instruction to the IC card unit in accordance with the Judgment results.

Mobile device having an IC card function

Growing community of inventors

Kawasaki, Japan

Wataru Hamada