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Touch stylus with wireless charging function and operating method thereof

A technology of wireless charging and operation method, applied in the direction of electrical components, circuit devices, electromagnetic wave systems, etc., can solve the problem of easy interference between the charging circuit and the frequency of the AC signal, etc.

Inactive Publication Date: 2015-07-22
RAYDIUM SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) The charging circuit and the frequency of the AC signal are prone to interference with each other

Method used

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  • Touch stylus with wireless charging function and operating method thereof
  • Touch stylus with wireless charging function and operating method thereof
  • Touch stylus with wireless charging function and operating method thereof

Examples

Experimental program
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Embodiment Construction

[0046] A specific embodiment according to the present invention is a touch pen with wireless charging function. In this embodiment, the stylus is used to touch the touch panel of the electronic device, but it is not limited thereto. First, please refer to figure 1 , figure 1 This is the functional block diagram of the stylus in this embodiment.

[0047] Such as figure 1 As shown, the stylus 1 with wireless charging function includes a receiving coil 10 , a resonant circuit 12 , a rectifying circuit 14 and a regulated output circuit 16 . Wherein, the resonant circuit 12 is coupled to the receiving coil 10 . The rectification circuit 14 is coupled to the resonant circuit 12 . The regulated output circuit 16 is coupled to the rectification circuit 14 . In practical applications, the stylus 1 may further include a rechargeable battery 18 . The rechargeable battery 18 can be coupled to the voltage-stabilizing output circuit 16 for storing the power output by the voltage-stab...

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PUM

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Abstract

A touch stylus with wireless charging function and operating method thereof are disclosed. The touch stylus includes a receiving coil, a resonant circuit, a rectifier circuit, and a voltage regulation output circuit. The receiving coil is used to receive an AC signal from outside. The resonant circuit is coupled to the receiving coil and used to perform a resonant process on the AC signal. The rectifier circuit is coupled to the resonant circuit and used to perform a rectifier process on the resonated AC signal. The voltage regulation output circuit is coupled to the rectifier circuit and used to perform a voltage regulation process on the rectified AC signal to convert the rectified AC signal into an output power for the operation of the touch stylus.

Description

technical field [0001] The present invention relates to a touch input device, in particular to a touch stylus with wireless charging function and its operating method. Background technique [0002] Generally speaking, a traditional stylus can be a passive stylus with a constant power supply and used with a digital tablet. The electromagnetic waves generated by the tablet provide the energy of an AC signal. The passive touch pen converts the AC signal into a DC signal through a rectifying circuit and a filter capacitor, and processes the DC signal into a constant voltage-stabilizing signal through a voltage-stabilizing circuit. In addition, the passive stylus also senses the energy of the AC signal through a coil and converts it into electrical energy through a charging circuit. [0003] However, the above-mentioned traditional stylus also has the following disadvantages: [0004] (1) It needs to be used with the digital board to provide the energy of the AC signal through...

Claims

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Application Information

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IPC IPC(8): G06F3/0354H02J5/00H02J17/00
CPCG06F3/0383G06F2203/0384G06F3/03545H02J50/12
Inventor 林佳秀林德昌吕雅玲陈义明郑为元
Owner RAYDIUM SEMICON
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