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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0899260 (1978-04-24) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 63 인용 특허 : 0 |
A photoelectric touch input panel has a plurality of crossed light beams which are broken by an object, the position coordinates of which are identified as outputs. Two spaced apart beam surfaces are provided, and the interrelationship between the beams in the two planes is employed to distinguish b
A photoelectric input device having a housing defining an opening, a plurality of light sources supported by said housing in a row along one side of said opening, a plurality of light sources supported on said housing in a row along an adjacent side of said opening, a plurality of photosensitive dev
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