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Handwriting positioning method for ultrasonic wave pen

A positioning method and ultrasonic technology, applied in the field of ultrasonic sensing, can solve the problems of thick frame thickness and can not meet the thickness of zero frame device, reduce thickness and frame width, facilitate accurate judgment of handwriting, and stabilize transmission speed Effect

Active Publication Date: 2015-11-11
GENERAL TOUCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application of this patent, since the ultrasonic receiving module is arranged on two opposite edges of the writing plane, the frame of the entire positioning device is wider and thicker, which cannot meet the requirements of zero frame and reducing the thickness of the entire device.

Method used

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  • Handwriting positioning method for ultrasonic wave pen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A handwriting positioning method of an ultrasonic pen, which controls the ultrasonic pen 2 to emit ultrasonic signals, the ultrasonic signals first propagate along the front side 6 of the writing board 1, and then pass through the hole 4 on the writing board 1 to change the propagation path, and then transmit to the writing board 1 At least two ultrasonic receivers 3 on the back 5, the ultrasonic receivers 3 transmit the received ultrasonic signals to the main controller unit 8;

[0030] Before the ultrasonic pen 2 writes, the ultrasonic pen 2 is not in contact with the writing board 1, the main controller unit 8 uses the time when the ultrasonic pen 2 starts to emit the ultrasonic signal as the first time reference, and the main controller unit 8 uses the time when the ultrasonic signal is received As the second time reference, the main controller unit 8 first calculates the time difference between the two according to the second time reference and the first time refere...

Embodiment 2

[0036] A handwriting positioning method of an ultrasonic pen, which controls the ultrasonic pen 2 to emit ultrasonic signals, the ultrasonic signals first propagate along the front side 6 of the writing board 1, and then pass through the hole 4 on the writing board 1 to change the propagation path, and then transmit to the writing board 1 At least two ultrasonic receivers 3 on the back 5, the ultrasonic receivers 3 transmit the received ultrasonic signals to the main controller unit 8;

[0037]Before the ultrasonic pen 2 writes, the ultrasonic pen 2 is not in contact with the writing board 1, the main controller unit 8 uses the time when the ultrasonic pen 2 starts to emit the ultrasonic signal as the first time reference, and the main controller unit 8 uses the time when the ultrasonic signal is received As the second time reference, the main controller unit 8 first calculates the time difference between the two according to the second time reference and the first time referen...

Embodiment 3

[0042] A handwriting positioning method of an ultrasonic pen, which controls the ultrasonic pen 2 to emit ultrasonic signals, the ultrasonic signals first propagate along the front side 6 of the writing board 1, and then pass through the hole 4 on the writing board 1 to change the propagation path, and then transmit to the writing board 1 At least two ultrasonic receivers 3 on the back 5, the ultrasonic receivers 3 transmit the received ultrasonic signals to the main controller unit 8;

[0043] Before the ultrasonic pen 2 writes, the ultrasonic pen 2 is not in contact with the writing board 1, the main controller unit 8 uses the time when the ultrasonic pen 2 starts to emit the ultrasonic signal as the first time reference, and the main controller unit 8 uses the time when the ultrasonic signal is received As the second time reference, the main controller unit 8 first calculates the time difference between the two according to the second time reference and the first time refere...

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Abstract

The invention discloses a handwriting positioning method for an ultrasonic wave pen. The ultrasonic wave pen emits an ultrasonic wave signal; the ultrasonic wave signal is subjected to spreading path change through diffraction and is then transmitted to at least two ultrasonic wave receivers; the ultrasonic wave receivers transmit the received ultrasonic wave signal to a main controller unit; before the writing of the ultrasonic wave pen, the ultrasonic wave signal sent by the ultrasonic wave pen forms a cursor directing point on a writing board; and during the writing by the ultrasonic wave pen, the main controller unit controls the ultrasonic wave pen to display the handwriting on the writing board. The method has the advantages that the thickness and the side frame width of an ultrasonic wave pen writing device can be reduced, and the goals of light weight, thin appearance and no side frame of the device are achieved.

Description

technical field [0001] The invention relates to the technical field of ultrasonic sensing, in particular to a handwriting positioning method of an ultrasonic pen. Background technique [0002] With the advent of the information age, the application of touch technology as a convenient interaction with electronic platforms has penetrated into people's daily life. Many daily affairs and business affairs are handled electronically. For example, people often need to write in original handwriting. Digital signature etc., therefore just need to provide a kind of digitized handwriting input device. [0003] In the prior art, Chinese Patent No. "200710026504.0" disclosed an ultrasonic positioning device and its positioning method on September 5, 2007. The technical solution is that the ultrasonic positioning device includes an ultrasonic transmitting module and can be controlled by a light touch switch A signal pen for ultrasonic emission, at least four ultrasonic receiving modules ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0354G06F3/043
Inventor 尹华成郑伦见何智星
Owner GENERAL TOUCH CO LTD
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