Abstract: A mobile phone base station sends to a mobile phone device information requesting location data thereof, receives location data sent back by the mobile phone device according to the information, and outputs the location data to a location data collection system. The location data collection system inputs the location data, and generates state-of-move information constituted from a location distribution, a moving speed distribution, and a moving direction distribution, or information obtained by filing these information, based on the location data. Then, the location data collection system broadcasts the generated state-of-move information to the car navigation system located in a predetermined area through the mobile phone base station. The car navigation system displays the received state-of-move information on a screen of a display unit thereof with a map indicating the vicinity of the location of the vehicle.

Abstract: A sealed connector is provided which includes: an inner housing accommodating a terminal; an outer housing surrounding the inner housing; a metallic shield positioned between the inner housing and outer housing; a connecting portion connecting the inner housing and the outer housing to form a one-piece body; a shield insertion hole which is formed for communication of the interior of the sealed connector with a shield insertion space located between both inner and outer housing; and a connecting protrusion which is formed by notching at the pointed end of the metallic shield and which protrudes in the connector fitting direction through insertion of the metallic shield into the shield insertion space. The metallic shield includes a slit adjacent to the connecting protrusion and an engaging piece opposite to an engaging slot portion of the inner housing, wherein the bottom end portion of the slit contacts the connecting portion between the inner and outer housings.

Abstract: In a ratio-mediated keyless entry system for an automotive vehicle, two vehicle-mounted antennae, lying in mutually perpendicular planes are used to receive radio signals from a portable, manually operable transmitter. When the transmitter is left in the passenger compartment and then the doors are locked, the system generates an alarm to notify the driver of the fact. On antenna completely encircles the passenger compartment. Encircling the passenger compartment with one of the vehicle-mounted antennae ensures that wherever the transmitter is left in the passenger compartment, its presence will be detected no matter how limited the transmitter's range.

Abstract: A drive guide system for an automotive vehicle indicates the remaining distance to a destination and the direction to the destination. In order to indicate the remaining distance and the direction in which to travel, travelling direction and travelling distance are detected. A direction sensor for detecting the terrestrial magnetic field is employed in the drive guide system. The direction sensor can be easily influenced by background noises in its surroundings. The background noise thus affects the detection of the direction of the terrestrial magnetism and thus causes errors in the calculation of the remaining distance and the direction to travel. Therefore, the variation of the background noise is sequentially monitored to detect the magnitude of the background noise affecting the detection of the direction, and when the variation exceeds acceptable limits, an error signal is produced.