Multi-scale digitizer using 3d magnetic force sensor and magnetic force pen

A multi-scale digitizer using a 3D magnetic force sensor and a magnetic force pen, comprising a recognition device and an external input device, wherein one or more magnetic force sensors installed in the recognition device include:

• a magnetic field sensor module mounted on an inner surface of an enclosure of the recognition device, configured to measure a magnetic force vector and a magnetic force variation in a three-dimensional (3D) direction emitted from the external input unit and amplify a measured signal;
• a sensor communication module installed inside the enclosure of the recognition device and configured to adjust the signal of the magnetic force vector and the magnetic force variation measured by the magnetic sensor module;
• and a recognition device auxiliary control module configured to receive a measurement value of the magnetic force vector and the magnetic force variation output from the sensor communication module and including a position detection algorithm for calculating spatial coordinates of the external input unit by comparing the received measurement value with a magnetic force vector spatial distribution data stored in the recognition device, wherein the recognition device visually displays spatial coordinates of the external input unit on a display by executing a multi-magnification coordinates recognition program for user recognition, and stores the spatial coordinates of the external input unit as an image or an electronic file.