Patent ID: 7474855
Filing Date: 2009-01-06
Classification: G06F,H04B

Abstract:
1. An information support system characterized by comprising an information transmission device for transmitting sound information to a battery-less terminal, a position detection device for detecting position information of the battery-less terminal and an ID detection device for detecting personal identification information of the battery-less terminal, wherein the battery-less terminal has photoelectric conversion means for receiving and converting an optical signal, which is strength-modulated and transmitted by the information transmission device, to an electric signal, sound output means for outputting the electric signal, which is converted by the photoelectric conversion means, as sound, reflection means for reflecting infrared light for position emitted by the position detection device, an infrared light source of infrared light for ID, ID memory means for storing ID data, and modulation means for modulating infrared light for ID in accordance with the ID data; the information transmission device has a light source for an optical signal and modulation means for modulating the strength of the optical signal in accordance with an electric signal of sound information to be transmitted; the position detection device has an infrared light source of infrared light for position, infrared imaging means for capturing infrared light for position which is reflected and returned by the battery-less terminal, and position detection means for detecting the position of the battery-less terminal based on the infrared light for position captured by the infrared imaging means; and the ID detection device has an infrared sensor for receiving infrared light for ID which has been modulated and emitted by the battery-less terminal and for outputting the ID data.