National Institute of Advanced Industrial Science and Technology

National Institute of Information and Communications Technology, Incorporated Administrative Agency

Hideyuki Nakashima

Takuichi Nishimura

Yoshiyuki Nakamura

Takeshi Kurata

Hideo Itoh

Ikuko Yairi

Seiji Igi

A system for reproducing audio information corresponding to a position within a displayed image comprising an image display device () which shows an image, an audio output device () which outputs an electromagnetic wave modulated by audio information toward any given positions in the image shown on the image display device (), and an audio reproducing terminal () which receives the electromagnetic wave at the position in the image, converts it to an electric signal and reproduces sound from that electric signal, wherein audio information support can be individually realized for each of the users watching the image.

System for reproducing audio information corresponding to a position within a displayed image

A battery-less terminal () has means () for photoelectrically converting an optical signal from an information transmission device (), means () for outputting the electric signal generated by the photoelectric conversion means () as sound, means () for reflecting infrared light for position emitted by a position detection device (), a light source () for infrared light for ID, means () for storing ID data, and means () for modulating the infrared light for ID in accordance with the ID data. The information transmission device () has a light source () for an optical signal and means () for modulating the strength of the optical signal in accordance with the electric signals of sound information. The position detection device () has a light source () for the infrared light for position, means () for imaging the infrared light for position reflected by the battery-less terminal (), and means () for detecting the position of the battery-less terminal () based on the infrared image by the infrared imaging means (). An ID detection device () has an infrared sensor () receiving infrared light for ID from the battery-less terminal () and outputting ID data.

Information support system

Growing community of inventors

Tokyo, Japan

Hideyuki Nakashima