Electromagnetic stylus and method of use thereof

Abstract

The invention relates to an electromagnetic touch pen and an application method thereof, in particular to a circuit board circuit loaded in a pen shell. A circuit element comprises a resistor R<1>, a crystal oscillator X, a transistor T, a capacitor C<4>, an inductance coil L<2> and a capacitor C<6>. The inductance coil L<2> is connected with the capacitor C<6> in parallel to form a LC oscillation circuit, the voltage output end of the LC oscillation circuit is grounded, the voltage input end of the LC oscillation circuit is connected with the capacitor C<4> in series to be connected to an emitting electrode E of the transistor T, wires are led out of the two ends of the base electrode B and the collecting electrode C respectively, the wire led out of the base electrode B is sequentially connected with the crystal oscillator X and the resistor R<1> in series to be connected to a voltage controlled input end U, and a voltage controlled input end control circuit is formed; the wire led out of the collecting electrode C is connected to a power end voltage input end V<cc>, and a power control circuit is formed. According to the electromagnetic touch pen and the application method thereof, oscillatory waves with the stable output frequency and the high accuracy are achieved through the crystal oscillator, the product quality is improved, control of the production qualified rate of a product is easy, the product manufacturing process is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of electromagnetic touch, in particular to an electromagnetic touch pen and a method for using the same. Background technique [0002] With the development of computer technology, portable electronic devices such as mobile phones, notebook computers, and tablet computers are becoming more and more popular. Traditional input devices such as mice and keyboards can no longer meet the needs of users due to their disadvantages of inconvenient convenience. Touch screen technology has been widely used in the field of electronic input devices due to its humanized input method of human-computer interaction, and electromagnetic induction stylus based on touch screen technology is becoming more and more common in the electronic input device market. [0003] The electromagnetic induction stylus is also called the electromagnetic stylus. In the existing inventions involving the electromagnetic stylus, it is mostly consid...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an electromagnetic stylus and its use method, to solve the problems of poor oscillation frequency stability and low frequency accuracy of the LC oscillation circuit in the existing electromagnetic stylus

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