| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable device that allows a player to easily record scores in a tennis match without judge or scorer, and notifies the player of a state of the match during play. SOLUTION: A small counter displays game counts of the player, love, fifteen, thirty, forty and A (advantage), and set counts 0-7, and game counts of another player, love, fifteen, thirty, forty and advantage, and set counts 0-7. The player wears the device on his or her arm or clothing. COPYRIGHT: (C)2011,JPO&INPIT
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