CN113721796A - Ultrasonic communication interactive pen equipment - Google Patents
Ultrasonic communication interactive pen equipment Download PDFInfo
- Publication number
- CN113721796A CN113721796A CN202110993167.2A CN202110993167A CN113721796A CN 113721796 A CN113721796 A CN 113721796A CN 202110993167 A CN202110993167 A CN 202110993167A CN 113721796 A CN113721796 A CN 113721796A
- Authority
- CN
- China
- Prior art keywords
- interactive
- data codes
- frequency
- pen
- ultrasonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 61
- 230000006870 function Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 3
- 241001422033 Thestylus Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
- G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
- G11B2020/10564—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account frequency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses ultrasonic communication interactive pen equipment, which realizes interaction between a flat end and an interactive pen by utilizing ultrasonic communication, has simple structure and low cost, does not need to pass a network or a Bluetooth and other high-cost modes, does not need to configure the network, the Bluetooth and the like, and can be directly started for use.
Description
Technical Field
The invention relates to the technical field of intelligent terminals, in particular to ultrasonic communication interactive pen equipment.
Background
Some flat plates on the market can be provided with handwriting pens, so that writing on the flat plates is facilitated, but most of the handwriting pens have single functions and only have handwriting functions. In the field of children education, the functions of the stylus pen need more interest, so that the use experience of the stylus pen is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide ultrasonic communication interactive pen equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
an ultrasonic communication interactive pen device comprises an interactive pen and a panel end; the interactive pen and the tablet terminal both have recording and sounding functions, can convert interactive contents to be sent into data codes and then convert the data codes into ultrasonic signals, transmit the ultrasonic signals to the opposite side by using the sounding function, acquire the ultrasonic signals sent by the opposite side by using the recording function, decode the ultrasonic signals to obtain data codes, convert the data codes obtained by decoding into the interactive contents and then execute corresponding feedback actions.
Further, in the tablet terminal and the interactive pen, the process of converting interactive content into data codes and then converting the data codes into sound wave signals and converting the sound wave signals into the interactive content is as follows:
1) the interactive pen and the tablet terminal are pre-stored with the corresponding relation between the interactive content and the data code;
2) the interactive pen and the tablet terminal are pre-stored with the corresponding relation between data codes and coding frequencies;
3) when the interactive content needs to be sent by the flat end and the interactive pen, the interactive content is converted into data codes;
4) converting the coding frequency into an ultrasonic signal and transmitting the ultrasonic signal to the opposite side by using a sound production function;
5) the method comprises the steps that a recording service is started at a panel end and an interactive pen, when an ultrasonic signal is received, frequency data of the sound wave are analyzed in real time according to each frame of recording data obtained by a recording function, then the highest value of the frequency identified each time is used as the current identification frequency, when the frequency is successfully matched with the set encoding frequency, a certain interactive content can be identified, and then corresponding feedback action is carried out on the identified interactive content.
The invention has the beneficial effects that: the invention realizes the interaction between the flat end and the interactive pen by utilizing the ultrasonic communication, has simple structure and low cost, does not need to use a network or a Bluetooth and other high-cost modes, does not need to configure the network, the Bluetooth and the like, and can be used by directly starting the computer.
Detailed Description
The present invention will be further described below, and it should be noted that the present embodiment is based on the technical solution, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
The embodiment provides ultrasonic communication interactive pen equipment which comprises an interactive pen and a panel end; the interactive pen and the tablet terminal both have recording and sounding functions, can convert interactive contents to be sent into data codes and then convert the data codes into ultrasonic signals, transmit the ultrasonic signals to the opposite side by using the sounding function, acquire the ultrasonic signals sent by the opposite side by using the recording function, decode the ultrasonic signals to obtain data codes, convert the data codes obtained by decoding into the interactive contents and then execute corresponding feedback actions;
in the flat end and the interactive pen, the process of converting interactive content into data codes and then converting the data codes into sound wave signals and converting the sound wave signals into the interactive content is as follows:
1) the interactive pen and the tablet terminal both store the corresponding relationship between the interactive content and the data code in advance, and the corresponding relationship between the interactive content and the data code is shown in table 1:
TABLE 1
2) The interactive pen and the tablet terminal are both pre-stored with the corresponding relation between the data codes and the coding frequencies, and the acquisition process of the corresponding relation between the data codes and the coding frequencies is as follows:
2.1) sampling rate selection: because the sound wave is ultrasonic, namely more than 20KHz, according to the Nyquist theory, the sampling rate needs to be at least twice the frequency of the sound wave, namely 40KHz, and according to the actual requirement, the sampling rate of 48KHz is selected in the embodiment. This makes it possible to actually recognize a sound wave frequency of up to 24 KHz.
2.2) selecting a coding frequency: in order to reduce the recognition error, the present embodiment selects 16 encoding frequencies, each of which is spaced by 200 Hz. Such as 20200Hz, 20400Hz, 20600Hz.. Each code frequency represents a hexadecimal value, i.e. 0x0 to 0 xF.
3) When the interactive content needs to be sent by the tablet end and the interactive pen, the interactive content is converted into data codes, for example, the vibration command is 0x01, and then the conversion frequency is 20200Hz and 20400 Hz. For the sake of identification stability, the present embodiment fixes the time of each encoding frequency to 40 milliseconds, so that the encoding becomes a sound wave for a total duration of 80 milliseconds, with the sound wave front having a frequency of 20200Hz at 40 milliseconds and the rear having a frequency of 20400Hz at 40 milliseconds.
4) The encoding frequency is converted into an acoustic signal: according to the trigonometric function y ═ Asin (ω t), the amplitude A can be regarded as the maximum sound volume of the recording, which is known, and the period t is also known as the reciprocal of the frequency, so that a definite sine function can be obtained, and the sound wave data of a specified frequency and duration can be easily calculated; then the sound wave data is transmitted to the opposite side for playing, and the ultrasonic wave with the frequency can be generated.
5) The method comprises the steps that a recording service is required to be started at both a panel end and an interactive pen, when an ultrasonic signal is received, every frame of recording data obtained by a recording function is taken out to be analyzed, the frequency data of the ultrasonic wave is analyzed in real time by using a Discrete Fast Fourier Transform (DFFT) algorithm, then the highest value of the frequency recognized each time is taken as the current recognized frequency, when the frequency is recognized to be successfully matched with the set encoding frequency, a certain interactive content can be recognized, and then a corresponding feedback action is carried out on the recognized interactive content.
For example, when the user writes with the interactive pen, the APP for writing in the tablet end sends an ultrasonic signal if the user wrongly writes, and the interactive pen carries out vibration or voice prompt after receiving the ultrasonic signal. Conversely, the specific sound wave signal can be sent out by interacting the button of the pen, and the flat end is controlled to do any operation such as drawing and the like.
It should be noted that, because the frequency of the ultrasonic wave is greater than 20KHz and is not in the range of human hearing frequency, the noise influence on human will not be caused during the ultrasonic wave communication.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (2)
1. An ultrasonic communication interactive pen device is characterized by comprising an interactive pen and a panel end; the interactive pen and the tablet terminal both have recording and sounding functions, can convert interactive contents to be sent into data codes and then convert the data codes into ultrasonic signals, transmit the ultrasonic signals to the opposite side by using the sounding function, acquire the ultrasonic signals sent by the opposite side by using the recording function, decode the ultrasonic signals to obtain data codes, convert the data codes obtained by decoding into the interactive contents and then execute corresponding feedback actions.
2. The device of claim 1, wherein the processes of converting interactive contents into data codes and then converting the data codes into sound wave signals and converting the sound wave signals into the data codes and then converting the data codes into the interactive contents in the tablet terminal and the interactive pen are as follows:
1) the interactive pen and the tablet terminal are pre-stored with the corresponding relation between the interactive content and the data code;
2) the interactive pen and the tablet terminal are pre-stored with the corresponding relation between data codes and coding frequencies;
3) when the interactive content needs to be sent by the flat end and the interactive pen, the interactive content is converted into data codes;
4) converting the coding frequency into an ultrasonic signal and transmitting the ultrasonic signal to the opposite side by using a sound production function;
5) the method comprises the steps that a recording service is started at a panel end and an interactive pen, when an ultrasonic signal is received, frequency data of the sound wave are analyzed in real time according to each frame of recording data obtained by a recording function, then the highest value of the frequency identified each time is used as the current identification frequency, when the frequency is successfully matched with the set encoding frequency, a certain interactive content can be identified, and then corresponding feedback action is carried out on the identified interactive content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993167.2A CN113721796A (en) | 2021-08-25 | 2021-08-25 | Ultrasonic communication interactive pen equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993167.2A CN113721796A (en) | 2021-08-25 | 2021-08-25 | Ultrasonic communication interactive pen equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113721796A true CN113721796A (en) | 2021-11-30 |
Family
ID=78678345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110993167.2A Pending CN113721796A (en) | 2021-08-25 | 2021-08-25 | Ultrasonic communication interactive pen equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113721796A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853111A (en) * | 2010-05-21 | 2010-10-06 | 福州锐达数码科技有限公司 | Ultrasonic interactive electronic white board system |
| CN202870746U (en) * | 2012-09-12 | 2013-04-10 | 杭州喜马拉雅信息科技有限公司 | Interactive wireless touch electronic pen and white board system |
| CN103576903A (en) * | 2012-07-24 | 2014-02-12 | 联想(北京)有限公司 | Information processing method and handwriting pen applying same |
| CN106850079A (en) * | 2016-12-06 | 2017-06-13 | 微位（深圳）网络科技有限公司 | The method for pushing and system of a kind of utilization ultrasonic wave broadcast transmission of data |
| CN108563341A (en) * | 2018-04-13 | 2018-09-21 | 吉林大学 | A kind of three-dimensional touch electronic pen and method with vibrotactile feedback |
| CN112530154A (en) * | 2020-11-13 | 2021-03-19 | 北京小米移动软件有限公司 | Information transmission method, information transmission device, electronic device, and storage medium |
-
2021
- 2021-08-25 CN CN202110993167.2A patent/CN113721796A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853111A (en) * | 2010-05-21 | 2010-10-06 | 福州锐达数码科技有限公司 | Ultrasonic interactive electronic white board system |
| CN103576903A (en) * | 2012-07-24 | 2014-02-12 | 联想(北京)有限公司 | Information processing method and handwriting pen applying same |
| CN202870746U (en) * | 2012-09-12 | 2013-04-10 | 杭州喜马拉雅信息科技有限公司 | Interactive wireless touch electronic pen and white board system |
| CN106850079A (en) * | 2016-12-06 | 2017-06-13 | 微位（深圳）网络科技有限公司 | The method for pushing and system of a kind of utilization ultrasonic wave broadcast transmission of data |
| CN108563341A (en) * | 2018-04-13 | 2018-09-21 | 吉林大学 | A kind of three-dimensional touch electronic pen and method with vibrotactile feedback |
| CN112530154A (en) * | 2020-11-13 | 2021-03-19 | 北京小米移动软件有限公司 | Information transmission method, information transmission device, electronic device, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102291205B (en) | High-reliability data transmission method and device based on multi-frequency sound waves | |
| CN102394724B (en) | Highly-reliable data transmission method and device based on dual tone multiple frequency sound waves | |
| CN105765918A (en) | Systems and methods using acoustic communication | |
| TWI690895B (en) | Method and system for expanding content source in social application, user end and server | |
| US20200202702A1 (en) | Infrared remote controller based on voice control and control system for electrical apparatus | |
| CN103347229A (en) | Audio signal processing device | |
| CN103366744B (en) | Based on the method and apparatus of Voice command portable terminal | |
| CN105551493A (en) | Method and device of data processing of children voice robot and children voice robot | |
| CN202736480U (en) | Microphone with remote controller, multimedia player and multimedia play system | |
| US9779731B1 (en) | Echo cancellation based on shared reference signals | |
| CN107566884B (en) | Connection method, server and terminal | |
| CN103840997A (en) | Method and device for establishing network connection | |
| CN113721796A (en) | Ultrasonic communication interactive pen equipment | |
| CN205584461U (en) | Loudspeaker box | |
| CN207603830U (en) | A kind of household electrical appliance intelligent voice system | |
| CN109302239B (en) | Anti-noise and anti-distortion near field acoustic communication method | |
| US20200202864A1 (en) | Wireless transmitting device and control system for electrical apparatus | |
| CN105246028A (en) | Wireless audio transmission system and method | |
| CN201754299U (en) | Acoustic instruction remote control wireless transmitting device | |
| CN104952306A (en) | Laser pointer with page turning function | |
| CN114187906A (en) | Vehicle controller and voice awakening method | |
| CN103152669A (en) | Method for utilizing intelligent terminal to operate voice frequency effector | |
| CN203368660U (en) | Interactive digital television system | |
| CN102750126A (en) | Speech input method and terminal | |
| CN212933530U (en) | Voice control system for computer network equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |