RESISTANCE VALUE OUTPUT TYPE NON-CONTACT POINTING DEVICE
PROBLEM TO BE SOLVED: To provide a resistance value output type non-contact pointing device which can be connected to a port for connecting the resistance value output type pointing device. SOLUTION: A permanent magnet 212 is attached to the lower end of an operating lever 211, and the motion of the...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a resistance value output type non-contact pointing device which can be connected to a port for connecting the resistance value output type pointing device. SOLUTION: A permanent magnet 212 is attached to the lower end of an operating lever 211, and the motion of the permanent magnet is detected by a hole element. Two hole elements 213 and 214 arranged along with an X axis are connected to a first differential amplifier 217, and two hole elements 215 and 216 arranged along with a Y axis are connected to a second differential amplifier 218. The outputs of two differential amplifiers are converted to be digital by an A/D converter 221 and supplied to drive elements 231a-231e as control signals. A ladder circuit is composed of serial resistors 232a-232d, terminal resistor 232e and parallel resistors 233a-233c and by appropriately determining the control patterns of the drive elements, a resistance value in proportion to the manipulated variable of the lever is outputted. |
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