| 摘要 |
PURPOSE: A lecture table with an information input function using an ultrasonic signal and a lecture system using the same are provided to display a writing content in real time by simultaneously outputting the moving track of a signal generator on a monitor and a large display. CONSTITUTION: An ultrasonic wave receiving module(220) is installed in a housing(210) and receives a reference signal and an ultrasonic signal generated from a signal generator(100). A location information generator(230) is received in the housing and outputs location information by measuring the location of the signal generator by using the reference signal and the ultrasonic signal. An image reproducing unit(250) outputs multimedia signals by reproducing the moving picture, the still image, and the learning materials. A video signal output unit(282) outputs the inputted video signal to an external display. A control unit(260) displays the track of the signal generator through the external display by using the location information from the location information generator. |
