| 摘要 |
An IC chip ( 12 ) having a memory ( 16 ) for memorizing a first random number ( 11 ) and information other than the first random number ( 11 ) (identification number 17 and the like) and for transmitting information in the memory ( 16 ) non-contact condition with a time difference according to a numeric value of the first random number ( 11 ). By setting the first random number ( 11 ) in a memory address counter ( 13 ) of the IC chip ( 12 ) for time difference control, the memory address counter ( 13 ) can be used for memory data transmission control at the same time, thereby building up a logic simply. As a consequence, it is possible to construct a semiconductor device capable of anti-collision control in the size of 0.5 mm square or less.
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