| 摘要 |
PURPOSE:To obtain a compact device characterized by simple operation, few errors, and no unnaturalness, in electronic equipment and the like having a CRT display device, by tightly sealing one air bubble in each transparent container, which is filled with an opaque liquid, so that the bubble can be freely moved, and detecting the position of the air bubble by the output obtained by a light receiving group. CONSTITUTION:The axes of containers 1A and 1B are made to be the X axis and the Y axis. When the upper surface of a movable case 20 is pushed at an arbitrary position and the case is slanted to an arbitrary inclination, air bubbles 3 in the containers 1A and 1B are moved by the angular components of the X axis and the Y axis with respect to the movement. Then, the parts of light receiving bits in a light receiving elements 8A are moved in correspondence with the movement of the air bubbles 3 in position detecting members 5A and 5B. When the bits are moved, the position of an ''H'' level of the signal, which is obtained from a register 9 that is provided in association with each of the members 5A and 5B, is changed. Therefore the positions of the air bubbles 3 can be detected by reading the position of the ''H'' level. At this time, the slant direction and the slant angle of the movable case 20 can be readily computed. |
