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Writing method for ultrasonic pen

An ultrasonic and writing board technology, applied in the field of ultrasonic sensing, can solve the problems of increasing structural complexity and manufacturing cost, and achieve the effects of simplified structure, elimination of errors and high accuracy

Inactive Publication Date: 2016-10-12
GENERAL TOUCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pressure value of the sonic pen in this technology needs to be obtained by separately arranging the pressure-sensitive unit, which increases the complexity of the structure and the production cost

Method used

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  • Writing method for ultrasonic pen
  • Writing method for ultrasonic pen
  • Writing method for ultrasonic pen

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Experimental program
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Embodiment Construction

[0029] A writing method for an ultrasonic pen, the specific process of which is as follows: an ultrasonic transmitter 4 emits ultrasonic waves to a pen core 6, when writing, the pen tip of the pen core 6 contacts the writing board 1, and the ultrasonic wave propagates to the writing board 1 through the pen core 6 and forms Lamb waves, the Lamb waves propagate through the writing board 1 to at least two ultrasonic receivers 3 , and the MCU main control unit 5 determines the writing track according to the Lamb waves received by the ultrasonic receivers 3 . Wherein, the ultrasonic transmitter 4 and the refill 6 are all fixed in the pen case of the ultrasonic pen 2, when the ultrasonic transmitter 4 emits ultrasonic waves, the reference signal transmitting unit transmits the reference signal, and the MCU main control unit 5 transmits the reference signal according to the reference signal and the Lamb wave signal. Determine the distances of the ultrasonic wave from the tip of the pe...

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Abstract

The invention discloses a writing method for an ultrasonic pen. An ultrasonic emitter emits ultrasonic waves to a pen refill; during writing, the pen refill is in contact with a writing board; the ultrasonic waves are transmitted to the writing board through the pen refill and form Lamb waves; the Lamb waves are transmitted to at least two ultrasonic receivers through the interior of the writing board; and an MCU (Main Control Unit) determines a writing trace according to the Lamb waves received by the ultrasonic receivers. According to the writing method, characteristics of the ultrasonic Lamb waves are utilized and the ultrasonic waves are enabled to reach the ultrasonic receivers through the interior of the writing board, so that errors caused by oblique writing of the ultrasonic pen can be eliminated to the maximum extent and the writing accuracy is higher.

Description

technical field [0001] The invention relates to the technical field of ultrasonic sensing, in particular to a writing 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 digital writing device. [0003] In the prior art, Chinese Patent No. "201210041949.7" disclosed an ultrasonic handwriting input system on September 11, 2013. Its technical solution is the ultrasonic handwriting input system. An ultrasonic stylus moving on a plane, at least two ultrasonic receiving sensors spaced apart from each other to receive the ultrasonic waves sent by the ultrasonic stylus, the ultrasonic stylus includes a shell wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/043G06F3/0354
CPCG06F3/043G06F3/03545
Inventor 林立尹华成郑伦见
Owner GENERAL TOUCH CO LTD
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