Patent ID: 6433705
Filing Date: 2002-08-13
Classification: G08G

Abstract:
A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:means mountable to the detected movable body for transmitting a small-wavelength electromagnetic wave not easily diffractable by an obstruction; a repeater for receiving said small-wavelength electromagnetic wave and adding a relay code thereto, said repeater relaying said small-wavelength electromagnetic wave with said relay code added thereto in a predetermined direction; when the detecting movable body receives said small-wavelength electromagnetic wave, said detecting movable body determines whether or not a relay code has been added to said small-wavelength electromagnetic wave; and means mountable to the detecting movable body for generating a first notice for reception of the small-wavelength electromagnetic wave with no relay code added thereto or a second notice for reception of the small-wavelength electromagnetic wave with the relay code added thereto.