| 摘要 |
PURPOSE:To make a device inexpensive and a structure simple by transmitting a screen displaying signal from a personal computer main frame incorporating a computer such as a personal computer and a word processor, etc., to a projecting device. CONSTITUTION:By branching the liquid crystal displaying signal from the personal computer main frame 13 so as to transmit through a cable 16 to the projecting device 5 in a projecting system I12 of which the word processor is representative and by transmitting a CRT displaying signal from the personal computer main frame 18 to a liquid crystal displaying adaptor 19 once and converting it into the liquid crystal displaying signal so as to transmit to the projecting device 5 through the cable 25 in the projecting system II17 of which the personal computer is representative, the information of characters and graphics can be expanded and projected in a separate place respectively. Thus, it is unnecessary to house the personal computer main frame incorporating the computer in the projecting device, so that the device can be made inexpensive and the structure simple.
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