| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection device capable of transferring information between devices by changing a signal waveform to a waveform which can transfer information by simple constitution even when the signal waveform supplied to a signal line is a waveform difficult to transfer the information. SOLUTION: A D+line and a D-line supplied from a connector part 13 of USB connection to a USB control circuit 12 are provided with a variable filter part 23. When the signal waveforms of the D+line and the D-line are waveforms which do not match with USB standard, a filter value of the variable filter circuit 23 is changed to make the waveform match with the USB standard to transfer information. COPYRIGHT: (C)2007,JPO&INPIT
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