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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0083514 (1987-08-07) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 65 인용 특허 : 2 |
The present invention provides a method and apparatus for counting the number of occurrences that a mobile unit comes within range of a stationary unit. The invention is useful in counting the number of laps which a runner or swimmer completes through a course. In one aspect, the present invention i
A device which allows an individual in a recurring event to automatically count the number of times that said person passes within range of a stationary point on a recurring event path such that each pass by said person is counted as one event, said device comprising: a receiver having means for att
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