CN102339128A - Virtual keyboard design scheme for inputting Chinese characters by brain waves - Google Patents
Virtual keyboard design scheme for inputting Chinese characters by brain waves Download PDFInfo
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- CN102339128A CN102339128A CN2011102696409A CN201110269640A CN102339128A CN 102339128 A CN102339128 A CN 102339128A CN 2011102696409 A CN2011102696409 A CN 2011102696409A CN 201110269640 A CN201110269640 A CN 201110269640A CN 102339128 A CN102339128 A CN 102339128A
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Abstract
The invention relates to a virtual keyboard design scheme for inputting Chinese characters by brain waves. In the scheme, a virtual keyboard consisting of 42 buttons (six rows * seven columns) is constructed on a computer screen; the upper half part of each key of the keyboard is marked with a character representing a name of the key; the lower half part of each key is provided with a small window with a pixel of 30*30, which is used for carrying out visual stimulation; first to fourth rows of buttons are marked with initial consonants and vowels in a binary syllabification input method; first five number keys in a fifth row represent positions of candidate Chinese characters; the back and forth page turning of candidate characters/words is realized by key names of '->' and '-<'; and a sixth row of buttons has the main function of realizing selection of the first to fifth rows of buttons. In the using process of a user, the selection of each binary syllabification character needs to be completed by two steps, i.e. a first step of selecting a certain button on the sixth row so as to select the row in which the binary syllabification character is positioned and a second step of selecting the binary syllabification character in the selected row and repeating.
Description
Technical field
This programme relates to a kind of brand-new man-machine interaction mode; Adopt the brain-computer interface technology to realize combining the Two bors d's oeuveres input method to carry out the typing (need not hand kbhit or speech recognition) of Chinese character, a kind of and extraneous method that exchanges can be provided for the personage of the serious motion function forfeiture of paralysed patient and other with brain wave.
Background technology
What realize that the character input adopted with the brain wave control computer is a kind of human-computer interaction technology that is called brain-computer interface; This technology is through gathering the electric signal that produces in the human thinking activity; Then these signals are analyzed; Determine people's intention, and be converted into order and come smart machines such as control computer.Brain-computer interface can be divided into by the producing method of signal and bringing out and two types of spontaneous brain electricities.The mode of bringing out of evoked brain potential BCI has multiple modes such as vision, the sense of hearing, body sense.Wherein vision induced pattern has the branch of mode of operations such as stable state, transient state and event related potential again, is particularly suitable for the constructing virtual keyboard as information typing interface.
At present, existing multiple application system is come out, and mainly be divided into two big types and use: the first is directly controlled smart machines such as wheelchair, household electrical appliance with brain wave, and it two is the control that realizes computer cursor and keyboard.The invention belongs to second kind of application, be based on the brain-computer interface of vision induced event related potential (ERP), be used for realizing only just carrying out the input of computing machine Chinese and English without keyboard and mouse with brain wave.
In character typing field; The most representative is people such as U.S. Farwell and Donchin proposed, utilize one 36 key of P300 composition structure in the brain wave in 1988 dummy keyboard; Realized the typing [Electroencephalogr.Clin.Neurophysiol. of 26 English alphabets and 10 function keys; 70:510-523,1988].In addition, also have some to adopt the character transcription system of stable state vision inducting current potential brain-computer interface.
Mostly current brain-computer interface with character input function is the improvement of people's schemes such as U.S. Farwell and Donchin mostly to the English alphabet design.Aspect the typing of Chinese, Zhejiang University has reported a brain-computer interface system [electronic letters, vol, 37 (8): 1733-1738,2009] based on the stroke input, and other Chinese character input system does not appear in the newspapers.
Summary of the invention
The present invention is a kind of brand-new Chinese character input method; Through on computer screen, making up a virtual double-spelling input keyboard (being visual stimulator); Certain button on the visual on-screen virtual keyboard of user; Just can stimulate human brain to produce specific EEG signals, corresponding EEG signal differentiated the purpose that just can reach the input of simulation Chinese character Two bors d's oeuveres.It is a kind of brain-computer interface technology based on " simulation is read event-related brain potential and brought out pattern ".
The technical scheme that the present invention adopted is: dummy keyboard of being made up of the individual button of 42 (6 row *, 7 row) of structure on computer screen; Each key grain of this keyboard is neglected window by key name and one and is formed; It is the little form of a 30*30 pixel that the first half mark of each key grain has the character of representing this key name to claim, Lower Half.The 1st row all is made up of two parts to the key name of the 4th line unit grain, and first half character is an initial consonant, and the Lower Half character is a simple or compound vowel of a Chinese syllable.Key name " 1 ", " 2 ", " 3 ", " 4 ", " 5 ", " ← ", " → " of the 5th row, (the supporting use " search dog/QQ spelling input method " this dummy keyboard in use, of the position of the first five digitized representation Chinese character candidate; Certainly; Other any double-spelling Chinese character input method all can, here, every page of candidate word number of input method is made as 5 Chinese characters); Key name " ← ", " → " represent candidate word page turning (preceding turning over, then turn over).The major function of the 6th row is the selection that realizes the 1st～5 row, and key name " (1) ", " (2) ", " (3) ", " (4) ", " (5) " represent the 1st row of dummy keyboard to the 5th row respectively, and carriage return, deletion action are represented in key name " carriage return ", " deletion ".In the process that the user uses; The selection of each Two bors d's oeuveres symbol needed for two steps can accomplish, and the first step is that the 6th certain button of row is selected, and chooses the row at this Two bors d's oeuveres symbol place; Second step was selected the aiming symbol in the selected line, so went round and began again.Based on such principle, though on the interface of our structure 42 constraint terms are arranged, in practical operation, in some moment, we only use from 7 constraint terms of certain delegation and select one.
The beneficial effect of this programme is, this two phases (Two Phase) input method of employing has reduced the constraint term number of each selection, has improved the accuracy rate of brain power mode identification.Compared to all-phonetic input method, needed selection number of times when having reduced each Chinese character typing, this can only do for per minute, and character several times selects, the brain-computer interface that speed is also very slow, input speed is multiplied, and wrong probability has just reduced.In addition, the double-spelling Chinese character input method of keyboard is knocked in traditional passing through and since when typewriting eyes need watch screen attentively, and common keyboard do not mark simple or compound vowel of a Chinese syllable, needs the position of memory initial consonant and simple or compound vowel of a Chinese syllable, dummy keyboard of the present invention has then been exempted such worry.
Description of drawings
Fig. 1 is the structure flow chart of this programme.
Fig. 2 is the interface of this programme structure.
Fig. 3 is the high bright interface displayed of the 6th row of this programme structure.
Fig. 4 is the high bright interface displayed of the 1st row of this programme structure.
Fig. 5 is the high bright interface displayed of the 2nd row of this programme structure.
Fig. 6 is a candidate state of importing initial consonant " b " back input method behind employing this programme.
Fig. 7 is a candidate state of importing initial consonant " b " and simple or compound vowel of a Chinese syllable " ai " back input method behind employing this programme.
Embodiment
The structure flow chart of this programme is as shown in Figure 1.In the process of using, the selection of each Two bors d's oeuveres symbol needed for two steps can accomplish, and the first step is that the 6th certain button of row is selected, and chooses the row at this Two bors d's oeuveres symbol place, and second step was selected the aiming symbol in the selected line.So go round and begin again.
The interface that this programme constructs is as shown in Figure 2.
Embodiment:
Among the embodiment shown in Figure 3, the user hopes in computer screen, to import " in vain " word through this interface, and phonetic is " bai ", and corresponding initial consonant " b " is at the 2nd key grain of the 1st row, and simple or compound vowel of a Chinese syllable " ai " is at the 5th key grain of the 2nd row.For the input of initial consonant " b ", needed for two steps selected and can accomplish, the first step is selected the 6th row " (1) " button, and as shown in Figure 3, after the selection, dummy keyboard is with as shown in Figure 4.Second step was selected " b " button in first row of choosing, and had so just accomplished the input to initial consonant " b ", and matching used input method is with as shown in Figure 6.For the input of simple or compound vowel of a Chinese syllable " ai ", what take is and the same method of initial consonant " b " input.After initial consonant " b " and simple or compound vowel of a Chinese syllable " ai " were all imported, input method was with as shown in Figure 7.Chinese character " in vain " is positioned at first position of candidate, and the corresponding selector button in this position is the 1st a key grain of the 5th row of keyboard.For the candidate position choice, needed for two steps selected and could accomplish equally, as shown in Figure 5.The first step is selected the 6th row " (5) " button, wait choose the 5th row after, select at aiming symbol " 1 " this row, after selecting to finish, will show " in vain " word on the computer screen.
Claims (4)
1. dummy keyboard design proposal with brain wave input Chinese character; It is characterized in that: on computer screen, make up one and the matching used dummy keyboard of double-spelling Chinese character input method; Be aided with the brain wave acquisition treating apparatus, the order that EEG signals translated the when user is selected virtual keyboard buttons sends to computing machine, realizes the control to computing machine; The input mode of two phases (Two Phase) is adopted in the input of each symbol, district's (OK) at Two bors d's oeuveres symbol that promptly first selection will be imported place, and again in the district that chooses (OK), the select target symbol.
2. according to the scheme in the claim 1; It is characterized in that; Each button of dummy keyboard is dimerous by up and down; The first half is the mark to this key function, and the latter half is the stimulation window that a vision current potential brings out, employing be the pattern of bringing out of " simulation read event-related brain potential ".
3. according to the scheme in the claim 1, it is characterized in that keyboard is made up of 6 row; 7 symbols of every row; The button mark of preceding 4 row has the initial consonant and the simple or compound vowel of a Chinese syllable of double-spelling Chinese character input method, and preceding 5 position numbers that button is a candidate Chinese character of the 5th row are used for the selection to target characters; Two other button " ← " of this row, " → " realize the front and back page turning of candidate Chinese character; Preceding 5 buttons of the 6th row are " (1) ", " (2) ", " (3) ", " (4) ", " (5) ", and the first step is to the selection of the 1st～5 row when being used for each input character, and two other button of the 6th row is realized " carriage return ", " deletion " function.
4. according to the scheme in the claim 1, it is characterized in that the keyboard original state is the 6th row high bright demonstration (state of activation); Other behavior light gray, the selection of each Two bors d's oeuveres character was divided into for two steps, and the first step person of being to use watches the stimulation window under certain button in the 6th row attentively; Thereby realize selection to target character location (OK); Be selected row and become high bright demonstration, second step was the target button of watching that delegation that in a last step, chose attentively, thereby realized the selection to a Two bors d's oeuveres character.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802723A (en) * | 2017-01-18 | 2017-06-06 | 西安电子科技大学 | A kind of Two bors d's oeuveres Chinese input system based on Steady State Visual Evoked Potential |
| CN107229330A (en) * | 2017-04-25 | 2017-10-03 | 中国农业大学 | A kind of character input method and device based on Steady State Visual Evoked Potential |
| CN107239137A (en) * | 2017-04-25 | 2017-10-10 | 中国农业大学 | A kind of character input method and device based on dummy keyboard |
| CN107390869A (en) * | 2017-07-17 | 2017-11-24 | 西安交通大学 | Efficient brain control Chinese character input method based on movement vision Evoked ptential |
| CN109471530A (en) * | 2018-10-22 | 2019-03-15 | 吉林大学 | Brain control input method based on Steady State Visual Evoked Potential and Mental imagery |
| CN110018743A (en) * | 2019-04-12 | 2019-07-16 | 福州大学 | Brain control Chinese pinyin tone input method |
| CN110488966A (en) * | 2017-07-04 | 2019-11-22 | 艾朝君 | A method of the network technology showed by conscious thinking or voice |
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| CN101183296A (en) * | 2007-12-12 | 2008-05-21 | 魏新成 | Virtual double assembly keyboard input chinese characters displayed by mobile phones touch screen |
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| CN101183296A (en) * | 2007-12-12 | 2008-05-21 | 魏新成 | Virtual double assembly keyboard input chinese characters displayed by mobile phones touch screen |
Non-Patent Citations (2)
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| 吴边等: "基于P300电位的新型BCI中文输入虚拟键盘系统", 《电子学报》, vol. 37, no. 8, 31 August 2009 (2009-08-31), pages 1733 - 1738 * |
| 官金安，陈亚光: "脑控双页虚拟键盘的设计与性能分析", 《中国临床康复》, vol. 10, no. 9, 10 March 2006 (2006-03-10), pages 124 - 126 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802723A (en) * | 2017-01-18 | 2017-06-06 | 西安电子科技大学 | A kind of Two bors d's oeuveres Chinese input system based on Steady State Visual Evoked Potential |
| CN107229330A (en) * | 2017-04-25 | 2017-10-03 | 中国农业大学 | A kind of character input method and device based on Steady State Visual Evoked Potential |
| CN107239137A (en) * | 2017-04-25 | 2017-10-10 | 中国农业大学 | A kind of character input method and device based on dummy keyboard |
| CN107239137B (en) * | 2017-04-25 | 2019-11-15 | 中国农业大学 | A kind of character input method and device based on dummy keyboard |
| CN107229330B (en) * | 2017-04-25 | 2019-11-15 | 中国农业大学 | A kind of character input method and device based on Steady State Visual Evoked Potential |
| CN110488966A (en) * | 2017-07-04 | 2019-11-22 | 艾朝君 | A method of the network technology showed by conscious thinking or voice |
| CN107390869A (en) * | 2017-07-17 | 2017-11-24 | 西安交通大学 | Efficient brain control Chinese character input method based on movement vision Evoked ptential |
| CN107390869B (en) * | 2017-07-17 | 2019-07-02 | 西安交通大学 | Efficient brain control Chinese character input method based on movement vision Evoked ptential |
| CN109471530A (en) * | 2018-10-22 | 2019-03-15 | 吉林大学 | Brain control input method based on Steady State Visual Evoked Potential and Mental imagery |
| CN110018743A (en) * | 2019-04-12 | 2019-07-16 | 福州大学 | Brain control Chinese pinyin tone input method |
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Application publication date: 20120201 |