Handwriting input device with electromagnetic energy transmission

A handwriting input, electromagnetic energy technology, applied in the input/output process of data processing, electrical digital data processing, instruments, etc., can solve the problems of being easily interfered by external electromagnetic fields, poor signal frequency stability, inconvenience, etc., to improve the electromagnetic field. The pen is too heavy, improving the effect of less data

Inactive Publication Date: 2011-12-28
WALTOP INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this design is that the frequency stability of the transmitted signal is poor, and this design is also extremely susceptible to external electromagnetic field interference
[0006] This shows that above-mentioned existing electromagnetic type handwriting input device obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved

Method used

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  • Handwriting input device with electromagnetic energy transmission
  • Handwriting input device with electromagnetic energy transmission
  • Handwriting input device with electromagnetic energy transmission

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Embodiment Construction

[0036] For further elaborating the technical means and effect that the present invention takes for reaching the intended invention purpose, below in conjunction with accompanying drawing and preferred embodiment, to the handwriting input device of the tool electromagnetic energy transmission that proposes according to the present invention its specific implementation, structure, Features and their functions are described in detail below.

[0037] Figure 2A A schematic block diagram of the electromagnetic handwriting input device of the present invention is shown. like Figure 2A As shown, the electromagnetic handwriting input device 20 mainly includes a microcontroller 202 , a power transfer coil (Power Transferring Coil) 204 , an antenna loop (Antenna Loops) 206 and a filter 208 . The microcontroller 202 can generate a first clock 2022, and the first clock 2022 cooperates with an external oscillating circuit (Crystal or Oscillator) 210 to provide a square wave signal of a ...

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Abstract

The invention relates to a hand input device with an electromagnetic power transferring capability. The device comprises a microcontroller, a power transferring coil, an electromagnetic pen, an antenna loop and a filter, wherein the microcontroller is used for controlling generation of first signals; the power transferring coil is used for transmitting the first signals in the form of electromagnetic waves; the electromagnetic pen is used for receiving electromagnetic power of the first signals, converting the electromagnetic power of the first signals into second signals and transmitting thesecond signals; the antenna loop is used for receiving the second signals; and the filter is used for filtering the second signals so as to get rid of the spurious signals.

Description

technical field [0001] The invention relates to a handwriting input device, in particular to a handwriting input device with electromagnetic energy transmission. Background technique [0002] The sensing principles of electromagnetic handwriting input devices currently on the market (such as tablet, digitizer, and digital whiteboard) can be mainly classified into ultrasonic, electromagnetic induction, or resistive. Among them, the electromagnetic induction is mainly used with a circuit board with X-axis and Y-axis antennas, and a dedicated electromagnetic signal pen. [0003] As far as the current electromagnetic induction handwriting input device is concerned, it can be classified into two kinds of handwriting input devices: an electromagnetic pen with a built-in battery and an electromagnetic pen without a battery. The battery-containing electromagnetic pen (Battery Electromagnetic Pen) is also called active technology. This kind of electromagnetic pen does not need the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/046G06F3/033G06F3/0354
Inventor 叶嘉瑞茆中甫
Owner WALTOP INT
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