| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal input/output device capable of switching an input and an output of a terminal according to the presence of a signal inputted in the terminal or the state of the signal inputted in the terminal. SOLUTION: The signal input/output device 1 comprises a terminal Y0 shared for both inputting and outputting a video synchronization signal that can be connected to a navigation board for inputting and outputting the video synchronization signal, and an ASIC2 for setting the terminal Y0 for either signal inputting or signal outputting according to the presence of the video synchronization signal inputted in the terminal Y0 or the state of the video synchronization signal inputted in the terminal Y0. COPYRIGHT: (C)2009,JPO&INPIT
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