Patent ID: 7187366
Filing Date: 2007-03-06
Classification: G06F

Abstract:
1. An input system with detection of coordinates, comprising: four elongated electric conductors, being disposed at four lateral sides of the system and an insulation grounding device being connected to an end of the electric conductors; and a control circuit, being arranged in the system, and the control circuit further comprising: wherein, first two of the electric conductors are disposed to correspond to an X-coordinate and a Y-coordinate of the input system respectively and second two of the electric conductors are disposed opposite to the preceding two electric conductors to correspond to the X-coordinate and the Y-coordinate too; whereby, when the button switch is pressed to allow the signal transmission device to send a signal to the microprocessor and the microprocessor performs a zero checking and sends the pulse current from the steady pulse power source to the elongated electric conductors, a magnetic field is produced to surround the electric conductors respectively such that the field induced voltage transducer induces a voltage corresponding to the magnetic field and the voltage is converted by the analog/digital converter as a first X-coordinate value, a first Y-coordinate value, a second X-coordinate value or a second Y-coordinate value depending on a distance between each of the electric conductors and the field induced voltage transducer being a vertical distance or a horizontal distance respectively.