Fujitsu Ten Limited

Fujitsu Corporation

Fijitsu Limited

Satoru Kishimoto

Yoshiaki Sano

Yoshihiko Maeno

Yasushi Seike

Naoki Sakai

Masaharu Atsumi

The present invention teaches an antitheft device whereby the detection accuracy of an unauthorized intruder into a vehicle can be improved, comprising a section for judging whether or not there is an approaching object T toward a vehicle M based on information obtained from a surround monitoring sensor for monitoring the surround of the vehicle M, a section for judging whether or not the approaching object T toward the vehicle M is a suspicious person based on information obtained from a motion sensor for monitoring the periphery and/or the inside of the vehicle M when it is judged that there is an approaching object T toward the vehicle M, and a section for conducting processing such as lighting-on of an indicator when the approaching object T toward the vehicle M is judged to be a suspicious person.

Antitheft device, monitoring device and antitheft system

A vehicle environment control device for recognizing and controlling the state of vehicle-associated equipment and a vehicle environment has a personal data storage section for storing user's personal data associated with users of the vehicle M, a fingerprint information storage section for storing information about fingerprints of authorized users thereof, a section for identifying a user based on fingerprint information, a section for reading personal data (such as a physique) of the identified user thereof from the personal data storage section and a section for setting the vehicle M to be an environment suitable for the user (such as setting a seat position) based on the read personal data, resulting in improved convenience of a driver or occupants in using a vehicle.

Vehicle environment control device

A constant-current source transistor, which exhibits a constant-current characteristic corresponding to the power source voltage of a sensor and is connected to an input signal terminal of an input circuit, such as a microprocessor. A first transistor is connected so that it may supply a current from the power source of the input circuit to the constant-current source transistor, and a second transistor is connected in parallel to the constant-current source transistor. When the signal level at the input signal terminal exceeds a predetermined value, the second transistor is turned ON to effect level control so the input signal level may not become excessively high and damage the input circuit.

One-terminal type level control circuit

A clamping transistor is connected to a signal input terminal of a signal processing circuit, such as a microprocessor, which operates on the output voltage from a stabilized power source circuit. When the output voltage from the stabilized power source circuit is below a predetermined value at the time of turning ON or OFF a power source switch, the clamping transistor is held in the ON state, thereby preventing the application of an input signal of a level higher than the power source voltage of the signal processing circuit, to the signal input terminal of the signal processing circuit.

Growing community of inventors

Kakogawa, Japan

Satoru Kishimoto