A hand-painted board and its antenna arrangement method

Abstract

The invention discloses a hand painting board and an antenna arrangement method thereof. A plurality of groups of antennas with at least two surrounding loops are distributed on a corresponding hand painting area on a substrate of the hand painting board. The antennas are sequentially arranged along X / Y axis directions of the substrate. The substrate is formed by adopting a multi-layer laminate. In the antennas arranged along the X or Y axis direction, the repeated loops which are in the first group of antennas along a starting end and located outside the hand painting area are disposed in different layers of the substrate; the outermost loops in the second group of antennas along a starting end are located outside the hand painting area, and are located at edges of the first group of antennas; and the secondary outer loops in the second group of antennas along a starting end are located inside the hand painting area. After adopting the above-mentioned technical solution, the problem of insufficient space outside the hand painting area of the hand painting board is solved, and it can be ensured that an edge part of the hand painting area of the hand painting board still can accurately recognize coordinates of a handwriting pen under the state thereof.

Description

Technical field: [0001] The invention relates to the technical field of hand-painted board products, in particular to a hand-painted board and an antenna arrangement method thereof. Background technique: [0002] The hand-painted board is also called a digital board and a drawing board, which is a computer input tool for professional computer graphics. It usually includes a tablet body and a stylus. Its working principle is: there are several groups of antenna loops distributed along the X / Y direction on the hand-painted board, and each group of antenna loops is distributed on the substrate in the hand-painted board in a roughly rectangular shape. The electromagnetic induction can detect the electromagnetic induction strength of each group of antenna loops, so as to determine the corresponding coordinates of the stylus. [0003] In order to accurately calculate the coordinates, three sets of antennas are usually required to determine the coordinates. Therefore, in order t...

AI Technical Summary

Problems solved by technology

Although the problem of insufficient space in the frame of the hand-painted board has been solved like this, because the span of the first group of antennas 91 loops is shortened, in this state, when the stylus is just in time at the edge of the hand-painted area 90, the first group of antennas 91 and the second The group antenna 92 ​​senses that the electromagnetic induction intensity of the stylus will be too close, which will cause errors in the calculation of the coordinates of the tablet

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