|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/221 ; 250/205 ; 340/712 ; 341/5|
|우선권정보||JP-0095667 (1986-04-24); JP-0153174 (1986-06-30); JP-0153175 (1986-06-30); JP-0153176 (1986-06-30)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 12 인용 특허 : 3|
An optical coordinate system input device includes a plurality of light emitting elements aligned in X and Y directions and sequentially, selectively supplied with a drive current, and a plurality of light receptor elements opposed to the respective light emitting elements each receiving a light signal from opposed one of the light emitting elements. The device specifically includes an adjusting circuit to adjust the value of the drive current flowing in the light emitting elements.
In an optical coordinate system input device including a plurality of light emitting elements, a plurality of light receptor elements each paired opposite a corresponding one of said light emitting elements, a drive circuit for supplying said light emitting elements with a drive current, a switching circuit for sequentially connecting said drive circuit to each of said light emitting elements in turn so as to drive them to emit respective light signals to the corresponding ones of said light receptor elements, and coordinate detecting means for detecting...