Mitsubishi Denki Kabushiki Kaisha

Takeshi Inoue

Masaharu Umezu

Hiroaki Ideno

Yoshisada Mizutani

Hiroshi Gamou

A non-contact IC card, a non-contact IC card terminal and a non-contact IC card system for performing data communication between the IC card and the terminal by using electromagnetic waves are arranged so that the IC card can reliably receive data transmitted from the terminal once the IC card is started up by a startup signal from the terminal. A selection circuit, under the control of a CPU selects a receiving amplifier having a smaller amplification factor in a startup step for receiving the startup signal and a receiving amplifier having a larger amplification factor in a data communication step for exchanging data signals. The sensitivity with which the data signal is received is thereby increased relative to the sensitivity with which data signals are received.

Non-contact IC card, terminal for use with the non-contact IC card and

A data processing apparatus has a card inserting unit provided with a card inserting port for a contact type card which is disposed inside of a loop-shaped antenna through which data is transmitted to and received from a non-contact type card. Even if various kinds of cards are accessed, the sequence of accessed cards cannot be different from the sequence of cards being processed. With this arrangement, in a data processing apparatus capable of commonly using two or more kinds of cards including the contact type card and non-contact type card, the sequence of users utilizing the apparatus cannot be different from the sequence of data being processed.

Data reader for non-contact and contact IC cards

A non-contact type IC card includes a power-supply receiving device for receiving power through electromagnetic coupling with a terminal unit; a signal transmitting/receiving device for exchanging signals with a terminal unit; a signal processing device, connected to the power-supply receiving device and the signal transmitting/receiving device, for processing signals; and a resetting device, connected to the signal processing device, for resetting the signal processing device when there is no signal exchange. A method of initializing a non-contact type IC card which receives power through electromagnetic coupling with a terminal unit and which exchanges signals with the terminal unit includes measuring elapsed time from a signal exchange between an IC card and the terminal unit and resetting the IC card if no signal exchange occurs after the elapsed time exceeds a predetermined value.

Non-contact IC card and method of initializing same

A switch system for an automotive vehicle enables the driver to properly operate various devices mounted on the vehicle without reducing or limiting the driver's field of view to any practical extent. In one form, the switch system includes a plurality of switches for operating various devices mounted on the vehicle; a switch selection detector for detecting which one of the switches is selected by a driver; a display for displaying the result of a driver's switch selection detected by the switch selection detector as well as the operating conditions of the devices as a result of the driver's switch selection; and a reflector in the form of a half mirror provided at a location above a dash board for reflecting the contents of the display so that the driver can watch the displayed contents of the display as reflected on the reflector. In another form, the reflector is omitted and the display is provided at a location above a dash board and below the driver's sight line through a front windshield so as not to reduce the driver's forward viewing field through the windshield so that the driver can watch the displayed contents of the display while watching the road ahead.

Switching system for automotive vehicle including a reflector positioned

An IC card system comprises an IC card containing a semiconductor module with a CPU and a memory and a display section for displaying the contents of the memory, and a card terminal into which the IC card can be inserted, and which, when the IC card is inserted therein, reads the contents of the memory, and controls the display contents of the display section of the card in accordance with the contents of the memory.

Growing community of inventors

Itami, Japan

Takeshi Inoue