| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately detect coordinate inputs by plural indicators. <P>SOLUTION: Each of plural indicators stores unique identification information for identifying each other, and generates a transmission signal including switch information indicating the states of plural pieces of switch means and the identification information at a repetition period uniquely set for the identification information. A coordinate input device receives the generated transmission signal, specifies the repetition period of the received signal based on the identification information detected from the received transmission signal, and generates timing information on the transmission signal from an indicator corresponding to the identification information synchronized with the repetition period. <P>COPYRIGHT: (C)2013,JPO&INPIT |
