| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a noncontact data transfer apparatus with less constraint on radio wave management with respect to a plurality of communication objects located at different positions, that can be downsized and attain high speed processing and to provide an apparatus provided with the noncontact data transfer apparatus. <P>SOLUTION: The noncontact data transfer apparatus includes a plurality of loop antennas connected in parallel and respectively located in the vicinity of communication objects; branch parts of the plurality of loop antennas; and a communication circuit connected to the branch parts, and is configured such that distances between the branched parts and the loop antennas are equal to each other and the loop antennas are wound reversely to each other. In place of the configuration of the branch parts and the loop antennas above, the distances from the branch parts to the loop antennas may be different from each other and the loop antennas may be wound in the same direction. <P>COPYRIGHT: (C)2004,JPO |
