Binary apparatus for motion control Patent #: 4092532
ApplicationNo. 05/949180 filed on 10/06/1978
US Classes:250/221, Controlled by article, person, or animal250/214PR, Photosensitive rheostat type341/31Photoelectric actuation
ExaminersPrimary: Nelms, David C.
Attorney, Agent or Firm
International ClassG06F 3/033 (20060101)
AbstractA device and method for producing a digital signal representative of the position of a moveable control stick relative to one or more reference planes. The device includes means for detecting the location of a shadow cast by a portion of the control stick extending between one or more light-emitting elements and one or more light-sensitive elements, and means for generating a digital signal representative of the detected location. With the light-emitting or light-sensitive elements oriented in a planar array, the signal thus generated is representative of the position of the control stick relative to the plane of the array.