| 摘要 |
PROBLEM TO BE SOLVED: To generate prescribed information in a first unit and to transmit the information to the side of a second unit by utilizing respective transmission lines in a rotary position detector for which the first unit including a rotation sensor and the second unit including the excitation source of the rotation sensor are interconnected by a first transmission line for transmitting excitation signals from the excitation source and a second transmission line for transmitting detection signals from rotation signals. SOLUTION: The first unit (10) is provided with information signal generation means (12, R1-R4) for generating information signals of a frequency different from the one of the excitation signals on the basis of the excitation signals supplied from the second unit (20), and signal combining means (C2) for combining the information signals and the detection signals and outputting the composite signals to the second transmission line (30c, 30d). The second unit (20) is provided with signal separation means (24, 25) for separating the composite signals sent through the second transmission line (30c, 30d) to the detection signals and the information signals, and a signal processing means (26) for obtaining rotation position information on the basis of the separated detection signals and recognizing prescribed information on the basis of the separated information signals. COPYRIGHT: (C)2007,JPO&INPIT
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