| 摘要 |
PURPOSE: A visual presenter added with an external input is provided to transfer additional information by adding an additional signal as a tablet signal to an output signal of the visual presenter. CONSTITUTION: A visual presenter added with an external input includes a compound module(100a) for mixing an additional signal input through an interface unit(300) from a tablet(200) to a visual image signal obtained by a camera unit(110) of the visual presenter and outputting the mixed signal through an output unit(190) of the visual presenter to a display device. The compound module is composed of an analog/digital converting unit(120) for converting the visual image signal obtained by the camera unit into a digital signal; a program room(130) for storing a program controlling total operations of a system; a CPU(140) for generally controlling the system to the program of the program room and making the additional signal added from a tablet signal to the visual image signal; a visual image storing unit(150) for storing the digital visual image signal output from the analog/digital converting unit by the unit of a frame; an additional signal storing unit(160) for storing the additional signal formed from the tablet signal by the CPU by the unit of the frame; a video controller(170) for controlling the storage and output of the digital visual image signal of the visual image storing unit and the storage and output of the additional signal of the additional signal storing unit; and a signal composing unit(180) for composing and outputting the visual image signal and the additional signal, which are output by the unit of the frame from the visual image storing unit and the additional signal storing unit to the control of the video controller, to the output unit.
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