CN100478855C - Braille computer pointing words input system, device and method thereof - Google Patents
Braille computer pointing words input system, device and method thereof Download PDFInfo
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- CN100478855C CN100478855C CNB2007101215250A CN200710121525A CN100478855C CN 100478855 C CN100478855 C CN 100478855C CN B2007101215250 A CNB2007101215250 A CN B2007101215250A CN 200710121525 A CN200710121525 A CN 200710121525A CN 100478855 C CN100478855 C CN 100478855C
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Abstract
The system comprises: a handwriting board, a computer, a braille input guide board, a braille pen and a braille processing module. Said braille input guide board has a same size with the writing area of the handwriting board and is mounted on the surface of the handwriting board; said handwriting board is connected to said computer through an interface; said braille processing module is used for processing the braille input signals from the handwriting board when user uses the braille pen and braille input board to make input on the handwriting board.
Description
Technical field
The present invention relates to the computer input unit field, particularly relate to a kind of Braille computer pointing words input system and device and method.
Background technology
The braille scheme that China generally adopts at present mainly contains two kinds, and a kind of is the braille scheme of nineteen fifty-three being issued and being carried out in the whole nation by the former Ministry of Education, is called for short " prevailing mandarin braille ", and this scheme has 21 initial consonants, 34 simple or compound vowel of a Chinese syllable, circumflex and punctuation marks.It is a standard with Beijing voice, based on mandarin, is unit with the speech, adopts the word link writing rule.Another kind of braille scheme is the braille reform scheme by the tentative popularization of State Language Work Committee's agreement in 1988, be called for short " Chinese double-spelling braille ", this scheme can be represented Chinese sound, rhyme, tone three elements in the blind symbol of two sides, whole system comprises: alphabet, punctuation mark, agreement differential method, write a Chinese character in simplified form method, subsonics character-determining method etc., also adopt the word link writing rule simultaneously.
No matter adopt any braille scheme, they all are to be basic structure with " blind symbol ", arrange by the rule of encoding scheme, and come impression scheme (also being called braille) by sense of touch.Blind symbol by six salient points (
) form, a blind symbol also is called for short one " side ".By having a few on six salient points and not having and a little carry out permutation and combination, just can express corresponding code.
Writing and reading of braille is more special, and writing of braille is to realize by punching (braille) on thicker paper.During braille, earlier paper is pressed in up and down between two layers of a character matrix plate, under the guiding of a character matrix plate, (braille) from right to left according to the braille encoding scheme, punches then; During reading, then the paper that has through hole is turned over, read with the salient point that hand touches on the paper from left to right.
Along with improving constantly of China's level of IT application, computing machine also is used widely in people's work, studying and living.But the I/O mode of at present nearly all information industry product, particularly computing machine is not considered physical disabilities' application demand all at ordinary people's design, and the blind person can't enjoy the facility that infotech is brought as the normal person.The present situation of information products has caused the telecoms gap between blind person and the normal person constantly to enlarge, and makes the survival and development ability of blind person in informationized society be subjected to further restriction, can't really be dissolved in the normal social life.
In order to solve the problem that the blind person imports Chinese character on computers, relevant both at home and abroad manufacturer has released some Related products.Conclude and get up to mainly contain two kinds, a kind of is with the input of the Chinese character input method on common computer braille.
Application number is that 01129619.4 Chinese invention patent application discloses the intelligent Chinese computer system that a kind of blind person uses, main by the personal computer main frame that can surf the Net, microphone, audio amplifier or the earphone that links to each other with each interface of this main frame, scanner, blind person constitute with the hardware of the apparent device of point, printer composition and the software module that is arranged in said main frame and the related hardware.This invention is given full play to the blind person to listen, say, touch ability when using a computer, more natural selectively, operational computations machine more easily.Make reciprocal process hommization more, intellectuality.Give blind person's document process, exchange with the normal person, school for the blind's teachers ' teaching provides instrument.
Application number is that 200410070161.4 Chinese invention patent application discloses a kind of braille-Chinese contrapositive editing and type setting and editing/typesetting method that runs on windows platform.This braille-Chinese contrapositive editing and type setting is by the braille input media, the blind automatic switch of the Chinese, and blind Chinese automatic switch, the Voice Navigation device, printer, the braille imprinter, display, point shows device, and the braille-Chinese contrapositive proofing is formed.This system has multiple input and output function, can realize the automatic translation conversion of the Chinese and the braille of pin-point accuracy, the composing of " What You See Is What You Get " of braille-Chinese contrapositive, braille is proofreaded automatically, simultaneously provide automatic speech to follow function, thereby improved efficient and practicality that braille is set type greatly at the braille user.Steps such as this braille-Chinese contrapositive editing/typesetting method formats by branch, paging and splitting etc. and sets type, contrast automatically, synchro edit, intelligence check and correction have realized the robotization of braille editing and composing work, for braille publishing work is provided convenience.
But obviously existing these input methods are for the blind person, and it is very difficult using;
Another kind method is 6 keys of definition on QWERTY keyboard, corresponding to six salient points of braille, operate with two hands, three points about three corresponding blind symbols of fingers difference of right-hand man, this mode is corresponding with blind symbol, and the blind person does not need to spend the too many time to learn comparatively speaking, but often need several fingers head button simultaneously in the time of owing to operation, still very inconvenient, on top of still need the suitable time, input speed also can not be too fast.
Summary of the invention
The object of the present invention is to provide a kind of Braille computer pointing words input system and device and method, its highly versatile, cost is low, and is easy to use.
A kind of Braille computer pointing words input system for realizing that the object of the invention provides comprises writing board for computer, and computing machine also comprises Braille input guide plate, braille pen, and Braille processing module;
Described Braille input guide plate is consistent with the size of writing the zone of described writing board for computer, is installed in the writing surface of handwriting pad;
Described writing board for computer is connected with described computing machine by interface;
Described Braille processing module is used for the braille input signal from handwriting pad being handled, and being converted to literal when the user utilizes described braille pen and described Braille input guide plate to carry out braille on described writing board for computer.
On the described Braille input guide plate, according to the blind in many ways symbol point of its size arrangement position, braille zone the writing in the zone of described Braille input guide plate at handwriting pad.
Described interface is a USB (universal serial bus).
A mini button is installed at the rear portion of the nib of described braille pen.
Described Braille processing module comprises coordinate points position mapping table, a some position coding schedule, and initialization module, the coordinate reading module, coordinate is to blind symbol conversion module, and blind symbol is encoded to the text conversion module, wherein:
Described coordinate points position mapping table is used to describe the mapping relations of coordinate to blind symbol point position;
Described blind symbol point position coding schedule is used to describe the corresponding relation of a position and coding;
Described initialization module is used to call the writing board for computer driver and drives handwriting pad, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Described coordinate reading module is used for when receiving input signal, reads and preserve the input coordinate data of writing board for computer, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled;
Described coordinate is to the conversion module of blind symbol, the coordinate data and the coordinate points position mapping table that are used for receiving are compared, thereby determine the some position of this coordinate, and preserve this some position, and when determining side's end of input, the institute that will belong to same side has a bit data to read, and goes out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation;
The described blind modular converter that accords with literal is used for after the user has imported the sentence end key, and the blind symbol coding of all preservations is read, and the braille code conversion is become literal.
Described coordinate points position mapping table is the form of one 4 row 216 row, and first row are deposited horizontal ordinate, and secondary series is deposited ordinate, and the 3rd row are deposited the sequence number of blind symbol, and the 4th row are deposited the specific position of a blind symbol, and each some position accounts for delegation.
Described blind symbol point position coding schedule is according to braille coding national standard, the form of one two row of foundation, and first row are encoded radios of a position, secondary series is the represented symbol of this code.
The described Pinyin coding that is encoded to, described braille coding national standard is the GB/T15720-1995 national standard.
For realizing that the object of the invention also provides a kind of Braille computer pointing words input media, comprise writing board for computer, Braille input guide plate and Braille processing module, wherein,
Described Braille input guide plate is consistent with the size of writing the zone of described writing board for computer, is installed in the writing surface of handwriting pad;
Described Braille processing module is used for the braille input signal from handwriting pad being handled, and being converted to literal when the user carries out braille on described Braille input guide plate.
On the described Braille input guide plate, according to the blind in many ways symbol point of its size arrangement position, braille zone the writing in the zone of described Braille input guide plate at handwriting pad.
Described Braille processing module comprises coordinate points position mapping table, a some position coding schedule, and initialization module, the coordinate reading module, coordinate is to blind symbol conversion module, and blind symbol is encoded to the text conversion module, wherein:
Described coordinate points position mapping table is used to describe the mapping relations of coordinate to blind symbol point position;
Described blind symbol point position coding schedule is used to describe the corresponding relation of a position and coding;
Described initialization module is used to call the writing board for computer driver and drives handwriting pad, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Described coordinate reading module is used for when receiving input signal, reads and preserve the input coordinate data of writing board for computer, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled;
Described coordinate is to the conversion module of blind symbol, the coordinate data and the coordinate points position mapping table that are used for receiving are compared, thereby determine the some position of this coordinate, and preserve this some position, and when determining side's end of input, the institute that will belong to same side has a bit data to read, and goes out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation;
The described blind modular converter that accords with literal is used for after the user has imported the sentence end key, and the blind symbol coding of all preservations is read, and the braille code conversion is become literal.
Described writing board for computer is the writing board for computer based on the BS5618 single-chip microcomputer.
For realizing that the object of the invention further provides a kind of Braille pen, be used for braille on the Braille computer pointing words input media, form by pen stand, penholder, nib and mini button, described nib is embedded in the described penholder, described penholder top has the cavity of an installation mini button, described mini button closely contacts with the top cover of nib, and described pen stand is installed in the top of penholder, is fastenedly connected with penholder.
Described penholder is cylindric barred body; Described nib be a diameter less than the pointed rod of the ball pen of penholder, the top has a circular or square top cover greater than nib.
Described pen stand is an oval-shaped ball.
For realizing that the object of the invention further provides a kind of Braille disposal route, comprise the following steps:
Steps A is called the writing board for computer driver and is driven handwriting pad, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Step B waits for user's braille input, when receiving input signal, reads and preserve the input coordinate data of writing board for computer, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled;
Step C, the coordinate data and the coordinate points position mapping table that receive are compared, thereby determine the some position of this coordinate, and preserve this some position, and when determining side's end of input, the institute that will belong to same side has a bit data to read, and goes out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation;
Step D after the user has imported the sentence end key, reads the blind symbol coding of all preservations, and the braille code conversion is become literal;
Step e, repeated execution of steps B～D is till end of input.
Described step C, described judgement is that this some position is compared with the some position that receives previously;
If this some position belongs to same side with the some position that received last time, then return and read new input coordinate.
The invention has the beneficial effects as follows: Braille computer pointing words input system of the present invention and device and method, it is on the basis of common computer handwriting pad, Braille input guide plate, braille pen and Braille processing module have been increased, thereby realized the computing machine braille input function of braille, have advantages such as highly versatile, cost be low, easy to use, meet the use habit that the blind person writes braille at ordinary times fully, prospect has a very wide range of applications.
Description of drawings
Fig. 1 is a Braille computer pointing words input system structural representation of the present invention;
Fig. 2 is a braille pen structural representation of the present invention;
Fig. 3 is a Braille processing module structural representation of the present invention;
Fig. 4 is a Braille disposal route process flow diagram flow chart of the present invention;
Fig. 5 A is the blind symbol synoptic diagram of a side in the Braille module in the embodiment of the invention;
Fig. 5 B is the blind symbol respective coordinates of a side schematic diagram data in the Braille module in the embodiment of the invention;
Fig. 6 is a writing board for computer circuit diagram in the embodiment of the invention;
Fig. 7 is embodiment of the invention Braille computer pointing words input media photo figure.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, a kind of Braille computer pointing words input system of the present invention and device and method are further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention is directed to the existing problem of present existing Braille input, a kind of Braille computer pointing words input system has been proposed, it is former substantially to be: the characteristics that can read the lettering pen track according to writing board for computer 4, the blind person is installed on the writing board for computer 4 at the some character matrix plate of using on the paper, the blind person is on this plate in the braille like this, just can convert coordinate points to code and literal by a Word module again by the coordinate position input computing machine 6 of writing board for computer 4 with braille.
As shown in Figure 1, Braille computer pointing words input system of the present invention comprises computing machine 6, writing board for computer 4, Braille input guide plate 1, braille pen 3, and Braille processing module 31.
Described Braille input guide plate 1 is consistent with the size of writing zone 5 of described writing board for computer 4, is installed in the writing surface of handwriting pad.
Described writing board for computer 4 is connected with described computing machine 6 by interface.
Described Braille processing module 31 is used for the braille input signal from handwriting pad being handled, and being converted to literal when the user carries out braille on described Braille input guide plate 1.
Describe Braille input guide plate 1 of the present invention below in detail: Braille input guide plate 1 of the present invention is with reference to the Braille dots type plate used during braille on paper of blind person.
In the appendix A of GB GB/T15720-1995,, point high to the point of blind symbol in braille template footpath, point all has regulation apart from, square distance and line-spacing.
Braille input guide plate 1 of the present invention is similar to ruler and set square, determines the some position when being used for the assisting blind braille.
Described Braille input guide plate 1 is being arranged the blind symbol 2 of some sides, preferably, 9*28 side, 4*28 side etc. is arranged, it laterally be 28 sides, its width is to follow 16 to open the width of paper suitable basically.Braille among the present invention input guide plate 1 is the size of writing zone 5 according to writing board for computer 4, correspondingly makes according to the regulation of GB, perhaps from one of common braille template intercepting, is installed to then above the writing board for computer 4.
That is to say that Braille of the present invention input guide plate 1 utilizes a common writing board for computer 4, write the size in zone 5, make the Braille input guide plate 1 of a corresponding size, it is installed in the writing surface of handwriting pad according to handwriting pad.
On Braille input guide plate 1, according to 2 positions of the blind in many ways symbol of its size arrangement, and braille zone the writing in the zone 5 at handwriting pad of assurance Braille input guide plate 1.
Writing board for computer 4 is connected with computing machine 6 by interface.
Preferably, described interface is a USB (universal serial bus).
As shown in Figure 2, describe braille pen 3 of the present invention below in detail
Writing board for computer 4 mainly contains two classes, and a class is a pressure plare, and another kind of is magnetic board, and commonly used is magnetic board at present.Handwriting pad all is furnished with lettering pen, and the pen that pressure plare is joined is very simple, is exactly the sticking plaster of a bar lip pencil, when you pen after a bit pressing on the pressure plare, pressure plare just can be read the coordinate of current location by pressure sensitive; And the more complicated that magnetic board is joined, there are electromagnetic oscillation circuit and contact-making switch in inside, when the pen after a certain point on the magnetic board is pressed, magnetic board just can be read the coordinate of current location by electromagnetic induction.If employing magnetic board, the just pen that directly utilizes magnetic board to join; If employing pressure plare, also can utilize original pen, but because the blind person penetrates sense during braille on paper, and can send the sound of " rattling away ", the sensation that picture braille on paper is also arranged when making the blind person import braille on computer point letter stencil, the invention provides a kind of braille pen 3, it is by pen stand 25, penholder 22, nib 21 and miniature button 24 are formed, as shown in Figure 2, described penholder 22 is cylindric barred body, described nib 21 be a diameter less than the pointed rod of the ball pen of penholder 22, be embedded in the penholder 22, the top has a circular or square top cover 23 greater than nib 21; Described penholder 22 tops have the cavity of the miniature button 24 of an installation; Described miniature button 24 closely contacts with the top cover 23 of nib 21; Described pen stand 25 is installed in the top of penholder 22, is fastenedly connected with penholder 22, and be an oval-shaped ball.
The design of pen stand 25 is to hold a pen for the ease of the centre of the palm, nib 21 is used for braille, penholder 22 is used for fixing nib 21, while has been installed a miniature button 24 at the rear portion of the nib 21 of braille pen 3, pen also has a bit downward displacement in braille like this, simultaneously also can send the sound of " rattling away ", just follow braille sensation on paper.
Described miniature button 24 can be the superminiature button of the G3B15 series of Japanese NIKKAI company.
As shown in Figure 3, describe Braille processing module 31 of the present invention below in detail.
Described Braille processing module 31 comprises coordinate points position mapping table 32, blind symbol point position coding schedule 33, and initialization module 34, coordinate reading module 35, coordinate is to blind symbol conversion module 36, and blind symbol is encoded to text conversion module 37, wherein:
Described coordinate points position mapping table 32 is used to describe the mapping relations of coordinate to blind symbol point position.
Described coordinate points position mapping table 32 is forms of one 4 row 216 row, first row are deposited horizontal ordinate, secondary series is deposited ordinate, the 3rd row are deposited the sequence number (1～36, be total to the blind symbol in 9*4=36 side) of blind symbol, and the 4th row are deposited the specific position (1～6) of a blind symbol, each some position accounts for delegation, because the present invention has the blind symbol of 36 sides, the blind symbol of every side has 6 points, so always have 216 row.
Described blind symbol point position coding schedule 33 is used to describe the corresponding relation of a position and coding.
Described blind symbol point position coding schedule 33 is according to braille coding national standard, the form of one two row of foundation, and first row are encoded radios of a position, secondary series is the represented symbol of this code.For example: preceding four initial consonants in the phonetic plan are expressed as: [3-b], [15-p], [13-m], [11-f].
Preferably, the described Pinyin coding that is encoded to, the corresponding relation employing national standard of some position and Pinyin coding is as GB/T15720-1995.
Described initialization module 34 is used to call writing board for computer 4 drivers and drives handwriting pad, calls in coordinate points position mapping table 32 and blind symbol point position coding schedule 33.
Described coordinate reading module 35 is used for when receiving input signal, reads and preserve the input coordinate data of writing board for computer 4, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module 36 and blind symbol the coordinate data of being imported is handled.
Preferably, coordinate reading module 35 is not preserved whole input point positions, just preserve a side some position with 6 storage unit, that is to say that it only keeps the coordinate points position of working as the blind symbol of last side, when reading next side's position coordinate by the time, it has just converted existing some position of preserving to coding, no longer keeps this side's some position, but preserves next side's some position with these 6 storage unit.
When the user on a letter stencil during braille, writing board for computer 4 will send the coordinate position of this point to computer, when coordinate reading module 35 receives input signal, read and preserve the data (coordinate) of input, and call coordinate and handle to the conversion module of blind symbol, wait for next input then, until the user imports the sentence end key, at this moment call blind symbol again and be encoded to text conversion module 37, continue to enter circulation after handling.
Described coordinate is to blind symbol conversion module 36, the coordinate data and the coordinate points position mapping table 32 that are used for receiving are compared, thereby determine the some position of this coordinate, and preserve this some position, and when determining side's end of input, the institute that will belong to same side has a bit data to read, and goes out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation.
Coordinate is called by coordinate reading module 35 to blind symbol conversion module 36, and it compares the coordinate data and the coordinate points position mapping table 32 that receive, thereby determines the some position of this coordinate, and preserves this some position.Again this some position is compared with the some position that receives previously,, then return coordinate reading module 35 if this some position belongs to same side with the some position that received last time.If this some position does not belong to same side with the some position that received last time, the institute that then will belong to same side has a bit data to take out, and goes out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule is compared, thereby obtain the represented symbol of this coding, and be kept at 6 li in computing machine.Return coordinate reading module 35 after handling.
Described blind symbol is encoded to text conversion module 37, is used for after the user has imported the sentence end key, and the blind symbol coding of all preservations is read, and the braille code conversion is become literal.
After the user has imported the sentence end key, call the blind modular converter that accords with literal by coordinate reading module 35.It reads the blind symbol coding of all preservations, and the braille code conversion is become literal.
As shown in Figure 4, be Braille processing module 31 courses of work, Braille process flow figure promptly of the present invention.
Braille disposal route of the present invention comprises the following steps:
Step S1, operation initialization module 34 calls the writing board for computer driver and drives handwriting pad earlier, calls in coordinate points position mapping table 32 and blind symbol point position coding schedule 33;
The handwriting pad driver is a kind of prior art, and those skilled in the art can reproduce the present invention according to content disclosed by the invention, therefore, describes in detail no longer one by one in the present invention.
Step S2, operation coordinate reading module 35 is waited for user's braille input, when receiving input signal, read and preserve the input coordinate data of writing board for computer, and call coordinate and be encoded to the literal conversion module to blind symbol conversion module 36 and blind symbol the coordinate data of being imported is handled;
Step S3, the operation coordinate is to the conversion module of blind symbol, the coordinate data and the coordinate points position mapping table 32 that receive are compared, thereby determine the some position of this coordinate, and preserve this point, and when determining side's end of input, the institute that will belong to same side has a bit data to read, go out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation;
The coordinate data and the coordinate points position mapping table 32 that receive are compared, thus the some position of definite this coordinate, and preserve this some position; Again this some position is compared with the some position that receives previously,, then return coordinate reading module 35 and read new input coordinate if this some position belongs to same side with the some position that received last time; If this some position does not belong to same side with the some position that received last time, the institute that then will belong to same side has a bit data to read, go out its encoded radio by binary computations, then encoded radio and blind symbol coding schedule are compared, thereby obtain represented symbol of this coding and preservation.
To import data-switching and become coordinate position, and preserve these information, and repeat described conversion and preserve process; When an input during,,,, convert the braille coding to as GB/T15720-1995 according to braille coding national standard then a plurality of coordinate points of the blind symbol 2 of same side that has received not in the blind symbol of same side 2 positions;
Step S4 moves the modular converter that blind symbol is encoded to literal at last, after the user has imported the sentence end key, calls the blind modular converter that accords with literal by coordinate reading module 35.It reads the blind symbol coding of all preservations, and the braille code conversion is become literal;
Step S5, repeated execution of steps S2～S4 is till end of input.
Be input as example explanation Braille disposal route of the present invention with the braille of " with vigor and enthusiasm " four words below and how realize coordinate points is transformed into the braille coding, and the braille code conversion becomes the process of literal.
The phonetic of " with vigor and enthusiasm " is long, teng, hu, yue, presses the prevailing mandarin braille encoding scheme, and its sound mother's blind symbol is expressed as
Wherein " jump " and have only simple or compound vowel of a Chinese syllable, so only represent with a side.
Because blind symbol is " antipoints is just apparent ", be to write from right to left braille the time just, be paper is turned in the time of reading, from left to right read, and on the blind symbol about two row salient points, in input with also just opposite when reading, as initial consonant l, what show when reading is
And when input, then be
Shown in Fig. 5 A, the synoptic diagram with the blind symbol point of side position describes braille disposal route process in detail here.
Shown in Fig. 5 B, at first on the Braille tablet, press each some position of ordered pair from left to right, from top to bottom, the coordinate record of each some position of the blind symbol 2 of each side is got off, insert coordinate points position mapping table 32.
When input " with vigor and enthusiasm " these four words, the writer just imports above-mentioned nine blind symbols successively on nine blind symbol positions from right to left.On first blind symbol position, need be on 123 these three some positions braille; On second blind symbol position, need be on 256 these three some positions braille; And the like, on the 9th blind symbol position, need be on 23456 these five some positions braille.
The treatment scheme of braille processing module is so: read the input information on the writing board for computer successively, after reading first coordinate information, compare with the coordinate points position mapping table of preserving 32, draw No. 1 point position that this coordinate belongs to the blind symbol of first party, write down this some position information; Continue coordinate reading information then, determine it is No. 2 and No. 3 point positions of the blind symbol of first party successively, preserve these some position information respectively; After reading again next coordinate information, through comparison, this some position belongs to No. 2 point positions of second party, 3 the some position information of at this moment just a last side being preserved and the coding schedule of preservation are compared, belong to initial consonant (l) thereby obtain this coding, preserve this coding, preserve No. 2 point position information of second party simultaneously, continue coordinate reading information again, finish up to all information inputs.At last, utilize phonetic to transfer literal to again, realize being encoded to the conversion of literal.
Be example with the structure that on a kind of existing writing board for computer 4, realizes Braille computer pointing words input system input braille of the present invention below, and the present invention is illustrated, but, should be noted that, for example be not qualification to claim of the present invention, claim of the present invention with claims restricted portion for fixed.
Writing board for computer 4 also is the computing machine writing input board, and is easy to use and be subjected to liking of increasing user with it.As shown in Figure 6, the present invention is an example and Braille computer pointing words input system of the present invention is described based on the writing board for computer 4 of BS5618 single-chip microcomputer.
With the BS5618 single-chip microcomputer is core design writing board for computer 4, utilizes serial ports and computing machine 6 to communicate, and directly pen writes on the handwriting pad glass screen and the computer software cooperation can be discerned Chinese character and figure easily with writing.
This handwriting pad adopts standard serial port to communicate by letter with computing machine, with TXD, RXD, RTS, DTR, five lines of GND.Wherein TXD, RXD line are respectively applied for and computing machine 6 swap datas, and DTR is used for computing machine 6 provides needed power supply to handwriting pad, and RTS is used for cooperating with computing machine 6 provides the DSR sign.
As shown in Figure 6, whole handwriting pad hardware module comprises:
The touch screen interface circuit module;
Communication module;
The voltage comparator integration module;
Key-press module;
Power regulator module.
Describe each hardware module of this handwriting pad below in detail.
1. touch-screen
Touch-screen adopts the four-wire ohm touch-screen, and the four-wire ohm touch-screen has two inputs of X, Y and two outputs, is nominally XP (X power supply), XIN (input of X terminal voltage), YP (Y holds power supply), YIN (input of Y terminal voltage) respectively.Connect four lines of touch-screen with single-chip microcomputer PA0, PA1, PA2, PA3 pin, these four pins promptly can be used as common I/O pin, can be used as the input of voltage comparator again.Wherein the pin of PA1, PA2 is made as the input end of XP, YP, and PA0 is the input end of XIN, and PA3 is the input end of YIN.During the voltage of measured X end, PA1 (XP) is output as height, and PA3 (YP) is low, and the voltage random notes pressing position of XIN output is different and change, and input PA0 mouth is compared with integrating circuit, converts digital quantity to.During the same voltage of measuring the Y end, PA2 (YP) is output as height, and PA0 (XP) be low, and the voltage random notes pressing position of YIN output is different and change, and imports the PA3 mouth, compares with integrating circuit, converts digital quantity to.
Because be that resistive type touch-screen has certain resistance respectively in X, Y direction.Click when certain is some when lettering pen, the corresponding variation takes place in resistance value, thereby the voltage of X, Y end output is changed, and can calculate the position of contact.
2. voltage comparator integration module
Be concrete X, the Y-axis position of judging that lettering pen is pushed on glass screen,, the voltage of 0-4V changed into the digit value 0-1023 of 10BITS with single bevel ADC converter of voltage comparator function design of BS5618 single-chip microcomputer.The principle of work of voltage comparator is than input pin (here directions X is PA0, is PA2 to the Y direction) with the voltage ratio of the voltage of desire conversion input BS5618, utilize the BS5618 internal comparator, when electric capacity charging rises to 4V by 0V, be divided into for 1023 equal portions break periods.In each break period, if Vin＞Vref (electric capacity is charging voltage at that time), then voltage comparator can produce a positive signal (reading PA0) value.Up to Vin＜Vref or interrupt just can finishing for 1023 times accumulative total, just can calculate the value of input voltage according to the result of accumulative total.
Constitute an integrating circuit with triode 9012 and resistance, electric capacity in handwriting pad, integration is output as 0-4V, and be 1ms integral time, the output of the PA4 of BS5618 single-chip microcomputer (VERF) pin connecting circuit.When PA4 pin direction is set to export, can make the integrating circuit zero clearing, when PA4 pin direction was set to import, integrating circuit started.
In the integrator of single-chip microcomputer, set PORT A at the beginning and be output, PORTA4 (PA4/VREF pin) causes capacitor discharge to 0V as low level output, begins counting so can guarantee reference voltage from 0V.Setting PORT A4 (PA4/VREF pin) then is the comparer input reference voltage, causes electric capacity to begin charging.Because the actual operation amplifier has input offset voltage, and generally about 1-5mv, when referring to V+=V-=0, output terminal is non-vanishing.In order to make output terminal is zero, adds little bucking voltage at input end.So add the compensating delay time in the program, the 0V reference point is moved after whole, to reach the function that correctly picks up counting.
The magnitude of voltage and the PA4 (VREF) that earlier PA0 are held in the program of single-chip microcomputer compare, be used to judge whether under the stroke, if have under the stroke, again integration is output as height with PA1 (XP), PA3 (YP) is low, and the voltage random notes pressing position of XIN output is different and change input PA0 mouth, compare with integrating circuit, convert digital quantity to.During the same voltage of measuring the Y end, PA3 (YP) is output as height, and PA1 (XP) be low, and the voltage random notes pressing position of YIN output is different and change, and imports the PA3 mouth, compares with integrating circuit, converts digital quantity to.So just can obtain the position of any in glass screen of lettering pen, repeatedly carry out the integration comparison program and just can obtain the movement locus of lettering pen on glass screen.
3. other module
The power supply of whole handwriting pad is provided by the serial ports DTR data line of computing machine 6, offers active devices such as single-chip microcomputer and triode through behind the mu balanced circuit.Passed through a level shifting circuit in the communicating by letter of serial ports of computers and single-chip microcomputer.Three buttons of handwriting pad (the left, center, right key that is equivalent to mouse respectively) connect PB0, PB1, the PB2 port of BS5618 single-chip microcomputer respectively after drawing on the resistance.
The program of single-chip microcomputer and the handwriting pad recognizer close fit in the computing machine in the handwriting pad, behind the recognizer in the startup computing machine, the DTR of serial ports of computers is high level most, for handwriting pad provides power supply, single-chip microcomputer electrification reset in the while handwriting pad.
After single-chip microcomputer resets, at first carry out initialize routine, internal storage location and port are provided with.Next step will carry out handshake communication with computing machine.The form of communication data: 9600, one start bits of baud rate, two position of rests, 8 bit data positions.Computer program is changed to RTS low, and sending four different identification codes to handwriting pad respectively, the single-chip microcomputer in the handwriting pad sends it back computing machine by certain coded system with the identification code of receiving after receiving identification code, after four contacts were errorless, computing machine was thought and is shaken hands successfully.RTS is changed to high level, and single-chip microcomputer enters data acquisition (integration) program.In integrator, single-chip microcomputer log-on data comparer, the output of constantly comparing four-wire ohm touch-screen X end has judged whether that whereby pen is under drawing on the screen.If have under the stroke, will restart comparer continuous coverage its X, Y end position accurately, test three keys in left, center, right on the handwriting pad then and have or not and press, the state of X, Y end position data and three keys surveyed is compiled into packet, send to computing machine.Transmission back continuation detecting pen next position on screen is repeated a step then and is lifted until pen.Computing machine is presented at its track on the screen after receiving a series of position data, and can load the handwritten word recognition system, and our word write on handwriting pad screen just can show on computer screen like this.
As shown in Figure 7, the embodiment of the invention is an example and Braille computer pointing words input system of the present invention is described with " little champion " writing board for computer of Chinese princes and dukes department product.
" little champion " writing board for computer is a pressure type writing board for computer, it communicates by USB (universal serial bus) (USB) and computing machine, the writer directly writes with writing pen writing in the zone 5 on handwriting pad, just can be input to written information in the computing machine.
The physical size of writing the zone of " little champion " writing board for computer is 5.8cm*4.5cm, according to this size, the embodiment of the invention is from common Braille dots type plate, intercepted of 9*4 side, its size and writing board for computer are write the consistent size in zone, then it is installed in writing in the zone of writing board for computer, thereby has constituted a Braille input guide plate 1.
" little champion " writing board for computer write also have above the zone 3 can self-defining button, the present invention is defined as sentence end of input key with leftmost button.
When braille is normally write, owing on paper, punch, so penetrate sense during braille, and can send the sound of " rattling away ", the sensation that picture braille on paper is also arranged when making the blind person import braille on computer point letter stencil, the invention provides a kind of braille pen 3, its outer shape is the same with common Braille pen, uses like this and does not have unconformable sensation.But change to some extent on the structure, it is made up of pen stand 25, penholder 22, nib 21 and miniature button 24, the design of pen stand 25 is to hold a pen for the ease of the centre of the palm, nib 21 is used for braille, penholder 22 is used for fixing nib 21, at nib 21 rear portions of braille pen 3 a miniature button 24 has been installed simultaneously, and its effect is that pen also has a bit downward displacement in braille, simultaneously also can send the sound of " rattling away ", just follow braille sensation on paper.
Braille computer pointing words input system of the present invention on the basis of common computer handwriting pad, has increased Braille input guide plate 1, braille pen 3 and Braille processing module 31, thus realized the computing machine braille input function of braille.It has advantages such as highly versatile, cost be low, easy to use, meets the use habit that the blind person writes braille at ordinary times fully, and prospect has a very wide range of applications.
In conjunction with the accompanying drawings to the description of the specific embodiment of the invention, others of the present invention and feature are conspicuous to those skilled in the art by above.
More than specific embodiments of the invention are described and illustrate it is exemplary that these embodiment should be considered to it, and be not used in and limit the invention, the present invention should make an explanation according to appended claim.
Claims (15)
1, a kind of Braille computer pointing words input system comprises writing board for computer, and computing machine is characterized in that, also comprises Braille input guide plate, braille pen, and Braille processing module;
Described Braille input guide plate is consistent with the size of writing the zone of described writing board for computer, is installed in the writing surface of writing board for computer;
Described writing board for computer is connected with described computing machine by interface;
Described Braille processing module is used for the braille input signal from writing board for computer being handled, and being converted to literal when the user utilizes described braille pen and described Braille input guide plate to carry out braille on described writing board for computer;
Described braille pen, be used for braille on the Braille computer pointing words input media, form by pen stand, penholder, nib and mini button, described nib is embedded in the described penholder, described penholder top has the cavity of an installation mini button, described mini button closely contacts with the top cover of nib, and described pen stand is installed in the top of penholder, is fastenedly connected with penholder.
2, Braille computer pointing words input system according to claim 1, it is characterized in that, on the described Braille input guide plate, according to the blind in many ways symbol point of its size arrangement position, braille zone the writing in the zone of described Braille input guide plate at writing board for computer.
3, Braille computer pointing words input system according to claim 1 is characterized in that, described interface is a USB (universal serial bus).
4, according to each described Braille computer pointing words input system of claim 1 to 3, it is characterized in that, described Braille processing module comprises coordinate points position mapping table, blind symbol point position coding schedule, initialization module, the coordinate reading module, coordinate is to blind symbol conversion module, and blind symbol is encoded to the text conversion module, wherein:
Described coordinate points position mapping table is used to describe the mapping relations of coordinate to blind symbol point position;
Described blind symbol point position coding schedule is according to blind symbol coding national standard, the form of one two row of foundation, and first row are blind symbol encoded radios of blind symbol point position, secondary series is the represented blind symbol coded identification of this blind symbol encoded radio;
Described initialization module is used to call the writing board for computer driver and drives writing board for computer, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Described coordinate reading module is used for when receiving the braille input signal, reads and preserve the input coordinate data of writing board for computer, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled;
Described coordinate is to the conversion module of blind symbol, the coordinate data and the coordinate points position mapping table that are used for receiving are compared, thereby determine the blind symbol point position of this coordinate, and this blind symbol point position of preservation, and when determining side's end of input, all blind symbol point bit data that will belong to same side are read, and go out its blind symbol encoded radio by binary computations, then blind symbol encoded radio and blind symbol point position coding schedule are compared, thereby obtain represented blind symbol coded identification of this blind symbol encoded radio and preservation;
Described blind symbol is encoded to the modular converter of literal, is used for after the user has imported the sentence end key, and the blind symbol coded identification of all preservations is read, and converts blind symbol coded identification to literal.
5, Braille computer pointing words input system according to claim 4, it is characterized in that, described coordinate points position mapping table is the form of one 4 row 216 row, first row are deposited horizontal ordinate, secondary series is deposited ordinate, the 3rd row are deposited the sequence number of blind symbol, and the 4th row are deposited the concrete blind symbol point position of a blind symbol, and each blind symbol point position accounts for delegation.
6, Braille computer pointing words input system according to claim 4 is characterized in that, described blind symbol is encoded to Pinyin coding, and described blind symbol coding national standard is the GB/T15720-1995 national standard.
7, a kind of Braille computer pointing words input media comprises writing board for computer, it is characterized in that, also comprises Braille input guide plate and Braille processing module, wherein,
Described Braille input guide plate is consistent with the size of writing the zone of described writing board for computer, is installed in the writing surface of writing board for computer;
Described Braille processing module is used for the braille input signal from writing board for computer being handled, and being converted to literal when the user uses braille pen to carry out braille on described Braille input guide plate; Described braille pen, be used for braille on the Braille computer pointing words input media, form by pen stand, penholder, nib and mini button, described nib is embedded in the described penholder, described penholder top has the cavity of an installation mini button, described mini button closely contacts with the top cover of nib, and described pen stand is installed in the top of penholder, is fastenedly connected with penholder.
8, Braille computer pointing words input media according to claim 7, it is characterized in that, on the described Braille input guide plate, according to the blind in many ways symbol point of its size arrangement position, braille zone the writing in the zone of described Braille input guide plate at writing board for computer.
9, according to claim 7 or 8 described Braille computer pointing words input medias, it is characterized in that, described Braille processing module comprises coordinate points position mapping table, blind symbol point position coding schedule, initialization module, the coordinate reading module, coordinate is to blind symbol conversion module, and blind symbol is encoded to the text conversion module, wherein:
Described coordinate points position mapping table is used to describe the mapping relations of coordinate to blind symbol point position;
Described blind symbol point position coding schedule is according to blind symbol coding national standard, the form of one two row of foundation, and first row are blind symbol encoded radios of blind symbol point position, secondary series is the represented blind symbol coded identification of this blind symbol encoded radio;
Described initialization module is used to call the writing board for computer driver and drives writing board for computer, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Described coordinate reading module is used for when receiving the braille input signal, reads and preserve the input coordinate data of writing board for computer, and calls coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled;
Described coordinate is to the conversion module of blind symbol, the coordinate data and the coordinate points position mapping table that are used for receiving are compared, thereby determine the blind symbol point position of this coordinate, and this blind symbol point position of preservation, and when determining side's end of input, all blind symbol point bit data that will belong to same side are read, and go out its blind symbol encoded radio by binary computations, then blind symbol encoded radio and blind symbol point position coding schedule are compared, thereby obtain represented blind symbol coded identification of this blind symbol encoded radio and preservation;
Described blind symbol is encoded to the modular converter of literal, is used for after the user has imported the sentence end key, and the blind symbol coded identification of all preservations is read, and converts blind symbol coded identification to literal.
10, Braille computer pointing words input media according to claim 9 is characterized in that, described writing board for computer is the writing board for computer based on the BS5618 single-chip microcomputer.
11, a kind of Braille pen, it is characterized in that, be used for braille on the Braille computer pointing words input media, form by pen stand, penholder, nib and mini button, described nib is embedded in the described penholder, and described penholder top has the cavity of an installation mini button, and described mini button closely contacts with the top cover of nib, described pen stand is installed in the top of penholder, is fastenedly connected with penholder.
12, Braille pen according to claim 11 is characterized in that, described penholder is cylindric barred body; Described nib be a diameter less than the pointed rod of the ball pen of penholder, the top of nib has a circular or square top cover greater than nib.
13, according to claim 11 or 12 described Braille pens, it is characterized in that described pen stand is an oval-shaped ball.
14, a kind of Braille disposal route is characterized in that, comprises the following steps:
Steps A is called the writing board for computer driver and is driven writing board for computer, calls in coordinate points position mapping table and blind symbol point position coding schedule;
Step B, wait for that the user uses braille pen to carry out the braille input, when receiving the braille input signal, read and preserve the input coordinate data of writing board for computer, and call coordinate and be encoded to the literal conversion module to blind symbol conversion module and blind symbol the coordinate data of being imported is handled; Described braille pen, be used for braille on the Braille computer pointing words input media, form by pen stand, penholder, nib and mini button, described nib is embedded in the described penholder, described penholder top has the cavity of an installation mini button, described mini button closely contacts with the top cover of nib, and described pen stand is installed in the top of penholder, is fastenedly connected with penholder;
Step C, the coordinate data and the coordinate points position mapping table that receive are compared, thereby determine the blind symbol point position of this coordinate, and this blind symbol point position of preservation, and when determining side's end of input, all blind symbol point bit data that will belong to same side are read, and go out its blind symbol encoded radio by binary computations, then blind symbol encoded radio and blind symbol point position coding schedule are compared, thereby obtain represented blind symbol coded identification of this blind symbol encoded radio and preservation;
Step D after the user has imported the sentence end key, reads the blind symbol coded identification of all preservations, converts blind symbol coded identification to literal;
Step e, repeated execution of steps B～D is till end of input.
15, Braille disposal route according to claim 14 is characterized in that, described step C, and described judgement is that this blind symbol point position and the blind symbol point position that receives are previously compared;
If this blind symbol point position does not belong to same side, then side's end of input with the blind symbol point position that received last time.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4385169B1 (en) | 2008-11-25 | 2009-12-16 | 健治 吉田 | Handwriting input / output system, handwriting input sheet, information input system, information input auxiliary sheet |
| CN101571742B (en) * | 2008-04-30 | 2012-09-05 | 汉王科技股份有限公司 | Power supply device for electromagnetic induction module of electromagnetic liquid crystal touch screen |
| CN100583011C (en) * | 2008-07-16 | 2010-01-20 | 中国科学院计算技术研究所 | Input system and method of braille computer point character based on photo-sensor |
| CN101753666B (en) * | 2008-12-03 | 2014-07-30 | 希姆通信息技术（上海）有限公司 | Mobile phone for blind user |
| CN102184172A (en) * | 2011-05-10 | 2011-09-14 | 中国科学院计算技术研究所 | Chinese character reading system and method for blind people |
| KR102007651B1 (en) * | 2012-12-21 | 2019-08-07 | 삼성전자주식회사 | Touchscreen keyboard configuration method, apparatus, and computer-readable medium storing program |
| CN105630770A (en) * | 2015-12-23 | 2016-06-01 | 华建宇通科技(北京)有限责任公司 | Word segmentation phonetic transcription and ligature writing method and device based on SC grammar |
| CN107886808B (en) * | 2017-11-03 | 2021-03-09 | 中国科学院计算技术研究所 | Braille square auxiliary labeling method and system |
| CN108052936B (en) * | 2017-11-03 | 2021-06-29 | 中国科学院计算技术研究所 | Automatic inclination correction method and system for Braille image |
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