Blind character keyboard control method, system and device and blind character keyboard
By symmetrically distributing blind symbols on the QWERTY full keyboard and combining the input method according to time intervals, the problem that the six-point blind symbol keyboard cannot be applied to the eight-point blind symbol keyboard is solved, and the efficiency and accuracy of braille input is achieved.
Patent Information
- Application Number
- CN202510476732.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-08-08
AI Technical Summary
The existing six-point blind symbol keyboard cannot be applied to eight-point blind symbol keyboard, resulting in low input efficiency and complex correspondence, which cannot meet the needs of Braille input.
A blind symbol keyboard control method is designed. By symmetrically distributing the blind symbols in the left-hand and right-hand input areas on the QWERTY full keyboard, input the blind symbols in the upper and lower half of the time interval is less than the preset time, and synthesize the eight-point blind symbols according to the preset rules to output the corresponding characters.
It simplifies the correspondence relationship of the blind keypad, improves the input accuracy, facilitates user memory, and is suitable for public input methods and Braille input.
Smart Images
Figure CN120447753A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of Braille input, and in particular to a control method, system, device and Braille keyboard. Background Art
[0002] The eight-dot and six-dot Braille input methods are two completely different Braille types and input method concepts. Six-dot Braille uses a linear left-right split, splitting into two columns, while eight-dot Braille uses a two-dimensional, block-based split. The eight-dot system, by adding two dots, can create more unique raised patterns (such as lines, triangles, and squares), making it suitable for distinguishing more denominations, types, or complex information (such as different bills and currency units). However, existing six-dot keyboards often convert the binary digits of the left and right half of the input square into decimal, then find the corresponding Braille output based on the decimal number. This results in a complex correspondence process and low input efficiency. Furthermore, due to the different splitting methods of the six-dot and eight-dot systems, existing Braille keyboards cannot be used with six-dot Braille keyboards on eight-dot Braille keyboards. Summary of the Invention
[0003] The present invention provides a control method, system, and device for a Braille keyboard, as well as a Braille keyboard. The Braille keyboard simplifies the correspondence between characters, making it faster to find the corresponding eight-dot Braille characters. The Braille keyboard is a full keyboard printed with Braille characters, improving input accuracy and accommodating both general input methods and Braille input. The Braille characters are symmetrically distributed, making them easier for users to memorize.
[0004] To solve the above technical problems, the present invention provides a control method for a braille keyboard, comprising:
[0005] When the braille keyboard is pressed, determining whether a character corresponding to an upper braille symbol and a character corresponding to a lower braille symbol are input respectively and the time interval between the inputs is less than a preset time;
[0006] If a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively and the time interval between the inputs is less than a preset time, the character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol input are combined according to a preset corresponding rule;
[0007] The upper and lower braille symbols are both four-dot braille symbols obtained by splitting the eight-dot braille symbols up and down; the braille keyboard is a full QWERTY keyboard printed with braille symbols, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed;
[0008] Determine the eight-dot braille symbol corresponding to the combined character and output it.
[0009] On the other hand, the characters corresponding to the upper braille symbols of the input are combined with the characters corresponding to the lower braille symbols according to the preset corresponding rules, including:
[0010] The braille symbols entered in the left-hand input area and the braille symbols entered in the right-hand input area are combined in such a way that the braille symbols entered in the left-hand input area are on the left and the braille symbols entered in the right-hand input area are on the right.
[0011] On the other hand, when the braille keyboard is pressed, after determining whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively and the time interval between the inputs is less than a preset time, the method further includes:
[0012] If there is no character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol respectively input and the time interval between the inputs is less than a preset time, the characters input by the braille keyboard are discarded.
[0013] On the other hand, before discarding the characters input by the braille keyboard, the method includes:
[0014] Determine whether the time control key is pressed;
[0015] If the time control key is not pressed, the process proceeds to a step of discarding the characters input by the Braille keyboard.
[0016] On the other hand, after determining whether the time control key is pressed, the method further includes:
[0017] If the time control key is pressed, determining whether a character corresponding to the upper half of the Braille symbol and a character corresponding to the lower half of the Braille symbol are input respectively;
[0018] If a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively, the character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol input are combined according to the preset corresponding rules;
[0019] If there are no characters corresponding to the upper and lower braille symbols respectively input, the process proceeds to a step of discarding the braille symbols input by the braille keyboard.
[0020] To solve the above technical problems, the present invention further provides a control system for a Braille keyboard, comprising:
[0021] a first judging unit configured to judge, when the braille keyboard is pressed, whether a character corresponding to an upper braille symbol and a character corresponding to a lower braille symbol are respectively input and whether the time interval between the inputs is less than a preset time; and if so, triggering a combining unit;
[0022] The combining unit is configured to combine the character corresponding to the upper half of the input Braille symbol with the character corresponding to the lower half of the input Braille symbol according to a preset corresponding rule;
[0023] The upper and lower braille symbols are both four-dot braille symbols obtained by splitting the eight-dot braille symbols up and down; the braille keyboard is a full QWERTY keyboard printed with braille symbols, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed;
[0024] The output unit is used to determine the eight-dot braille symbol corresponding to the combined character and output it.
[0025] In order to solve the above technical problems, the present invention further provides a control device for a Braille keyboard, comprising:
[0026] Memory for storing computer programs;
[0027] A processor is configured to implement the steps of the above-mentioned method for controlling a Braille keyboard when executing the computer program.
[0028] In order to solve the above technical problems, the present invention also provides a Braille keyboard, including the above-mentioned Braille keyboard control device.
[0029] On the other hand, each braille symbol in the upper half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the left-hand input area of the braille keyboard, and each braille symbol in the lower half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the right-hand input area of the braille keyboard.
[0030] On the other hand, it also includes indexers;
[0031] The index symbol is a raised touch symbol, which is set on the F key and J key of the QWERTY full keyboard;
[0032] The index symbol is used to assist input.
[0033] The present invention discloses a control method, system, device and Braille keyboard, which relate to the field of Braille input. The method includes: when the Braille keyboard is pressed, if a character corresponding to an upper-half Braille symbol and a character corresponding to a lower-half Braille symbol are input and the time interval between the inputs is less than a preset time, the characters are spliced together according to a preset corresponding rule; the eight-dot Braille symbol corresponding to the spliced character is determined and output. The eight-dot Braille symbol is split into an upper-half four-dot Braille symbol and a lower-half four-dot Braille symbol. During the Braille input process, if the upper-half Braille symbol and the lower-half Braille symbol are input, it is only necessary to splice the characters input on the Braille keyboard, and then search for the eight-dot Braille symbol for the spliced characters. The correspondence relationship is relatively simple, and the process of searching for the corresponding eight-dot Braille symbol is faster. The Braille keyboard is a full keyboard with Braille symbols printed on it, which improves the input accuracy and can meet the needs of both popular input methods and Braille input. The Braille symbols are symmetrically distributed, which is convenient for users to remember. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0035] Figure 1 A flowchart of a method for controlling a Braille keyboard provided by the present invention;
[0036] Figure 2 A schematic diagram of a Braille keyboard provided by the present invention;
[0037] Figure 3 A schematic structural diagram of a control system for a Braille keyboard provided by the present invention;
[0038] Figure 4 This is a structural schematic diagram of a control device for a Braille keyboard provided by the present invention. DETAILED DESCRIPTION
[0039] The core of this invention is to provide a control method, system, and device for a Braille keyboard, as well as a Braille keyboard. The mapping relationship is relatively simple, making the process of finding the corresponding eight-dot Braille symbols faster. The Braille keyboard is a full keyboard printed with Braille symbols, improving input accuracy and accommodating both general input methods and Braille input. The Braille symbols are symmetrically distributed, making them easier for users to memorize.
[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0041] Figure 1 This is a flow chart of a method for controlling a Braille keyboard provided by the present invention. Figure 2 A schematic diagram of a Braille keyboard provided by the present invention;
[0042] The control method of the braille keyboard includes:
[0043] S11: When the braille keyboard is pressed, determining whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively and the time interval between the inputs is less than a preset time; if so, proceeding to step S12;
[0044] S12: combining the character corresponding to the upper half of the input braille symbol with the character corresponding to the lower half of the input braille symbol according to a preset corresponding rule;
[0045] The upper and lower braille symbols are both four-dot braille symbols obtained by splitting the eight-dot braille symbols up and down. The braille keyboard is a full QWERTY keyboard with braille symbols printed on it, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed.
[0046] S13: Determine the eight-dot braille symbol corresponding to the combined character and output it.
[0047] A six-dot blind square has six spots in three rows and two columns. The six spots create 64 different blind square shapes (including the empty square). The spots are numbered horizontally, with spots 1 and 2 in the first row, and 5 and 6 in the last row.
[0048] An eight-dot blind square has eight spots in four rows and two columns. The eight spots can form 2^8, a total of 256 blind square shapes (including the empty square). The spots are numbered horizontally, with the first row being numbered 1 and 2, and the last row being numbered 7 and 8.
[0049] A four-dot braille symbol consists of four dots in two rows and two columns, forming 16 different braille symbol shapes (including the empty square). The dots are numbered horizontally, with dots 1 and 2 in the first row and 3 and 4 in the last (second) row. To distinguish between the four-dot braille symbols on the left and right sides of a QWERTY keyboard, the four-dot braille symbols on the right half-square are numbered with dots 5 and 6 in the first row and 7 and 8 in the last (second) row.
[0050] Six-dot Braille was originally split linearly into two columns, while eight-dot Braille uses a two-dimensional block-based splitting method. The split objects are eight-dot and six-dot, similar to the different categories of binary and decimal numbers. Six-dot and eight-dot Braille are completely different types of Braille. The splitting and encoding methods of the above-mentioned half-square Braille input methods are improvements on the six-dot system's left-right symmetrical splitting and encoding methods. Eight-dot Braille is a completely new concept in Braille (or Braille symbols), splitting the top and bottom into two four-dot Braille symbols (two rows and two columns), which is more scientific and intuitive than splitting the left and right half-square into two columns and half-squares. Currently, there is no eight-dot Braille input method or Braille keyboard for the full QWERTY keyboard. The eight-dot and six-dot Braille input methods represent two completely different Braille symbol types and input method concepts.
[0051] An eight-dot Braille input method keyboard, also known as a semi-square four-dot Braille keyboard, utilizes a standard QWERTY keyboard. The semi-square four-dot Braille keyboard preferably utilizes 32 key positions, divided into left-zone Braille key positions and right-zone Braille key positions. Semi-square four-dot Braille symbols are marked on the keycaps and are symmetrically distributed. When used in conjunction with the eight-dot Braille input method of the present invention, the semi-square four-dot Braille keyboard of the present invention is formed. Figure 2 shown.
[0052] This application provides a rule to correspond the upper half of the Braille symbols and the lower half of the Braille symbols to the QWERTY standard keyboard one by one.
[0053] Since the eight-dot braille symbol is split into an upper half and a lower half during the splitting process, the braille symbol is also entered as an upper half and a lower half on the braille keyboard. The upper half and the lower half of the braille symbol are then joined together in the reverse order of the splitting process. The specific joining method can be found in Table 1, which is a schematic diagram of the joining process provided in this application.
[0054] Table 1
[0055]
[0056] Taking Table 1 as an example, when the user presses the Q key and the P key on the keyboard, the combined character is QP. Then the eight-dot braille symbol corresponding to QP is searched and output, or the braille code of the eight-dot braille symbol is output. There are a total of 256 braille codes.
[0057] The present invention discloses a control method for a braille keyboard, which relates to the field of braille input. The method includes: when the braille keyboard is pressed, if a character corresponding to an upper braille symbol and a character corresponding to a lower braille symbol are input and the time interval between the inputs is less than a preset time, the braille keyboard is spliced together according to a preset corresponding rule; the eight-dot braille symbol corresponding to the spliced character is determined and output. The eight-dot braille symbol is split into an upper four-dot braille symbol and a lower four-dot braille symbol. During the braille input process, if the upper braille symbol and the lower braille symbol are input, it is only necessary to splice the characters input on the braille keyboard, and then search for the eight-dot braille symbol for the spliced characters. The correspondence relationship is relatively simple, and the process of searching for the corresponding eight-dot braille symbol is faster. The braille keyboard is a full keyboard with braille symbols printed on it, which improves the input accuracy and can meet the needs of both popular input methods and braille input. The braille symbols are symmetrically distributed, which is convenient for users to remember.
[0058] Based on the above embodiment:
[0059] In some embodiments, combining the character corresponding to the upper half of the input braille symbol with the character corresponding to the lower half of the input braille symbol according to a preset corresponding rule includes:
[0060] The braille symbols entered in the left-hand input area and the braille symbols entered in the right-hand input area are combined in such a way that the braille symbols entered in the left-hand input area are on the left and the braille symbols entered in the right-hand input area are on the right.
[0061] According to the preset correspondence rules, each braille symbol in the upper half is mapped one by one to each key in the left-hand input area of the QWERTY full keyboard, and each braille symbol in the lower half is mapped one by one to each key in the right-hand input area of the QWERTY full keyboard.
[0062] The rule provided in this application is based on human engineering considerations. To facilitate memorization, the corresponding modes in Table 2 are provided. Table 2 is a rule correspondence table provided in this application.
[0063] Starting Position: Place your index fingers on the F and J keys (these keys have raised markings), and place your other fingers naturally on the adjacent keys. The index, middle, and ring fingers of your left hand correspond to the third and fourth dots of the braille symbols: left raised dot, left raised dot, and right raised dot, respectively. Repeat the same pattern for your right index, middle, and ring fingers, forming a symmetrical layout. The left index finger controls the last two columns of keys on the left side, while the left pinky controls the first column of keys on the left side and the left upper shift key. The right thumb controls the space bar, the right index finger controls the first two columns of keys on the right side, and the right pinky controls the fifth column of keys on the right side.
[0064] The eight-dot Braille symbol encoding rule is as follows: the eight-dot Braille symbol encoding = the upper four-dot Braille symbol code + the lower four-dot Braille symbol code.
[0065] Table 2
[0066]
[0067] To improve input efficiency, this application defaults to using the left hand input as the upper half and the right hand input as the lower half. Therefore, the upper half of the braille symbols correspond to 1, 2, 3, and 4, a total of four positions, and the lower half of the braille symbols correspond to 5, 6, 7, and 8, a total of four positions.
[0068] The upper part can also be set to right-hand input and the lower part to left-hand input. This application does not make too many restrictions here. It only needs to ensure that the splitting method and the splicing method are the same.
[0069] In some embodiments, when the braille keyboard is pressed, after determining whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input and the time interval between the inputs is less than a preset time, the method further includes:
[0070] If there is no character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol respectively input and the time interval between the inputs is less than the preset time, the characters inputted by the braille keyboard are discarded.
[0071] After pressing the corresponding key on the keyboard, the input is considered complete as soon as the second key is pressed. This method is similar to the current method of inputting uppercase letters by using the Shift key and the letter key. When splicing two keys, regardless of the order of pressing, the left 16-key four-dotted half-square braille symbol is uniformly placed first, followed by the right 16-key four-dotted braille symbol. Only when both keys are aligned can the splicing be legal. The goal is to achieve a unique definition and implement it in place to match braille input.
[0072] Alternatively, the second method, double-click playback, can be used. If the time interval between the two keypresses does not exceed a certain threshold, the two keys are considered to be pressed simultaneously, and the input is complete. If the time interval exceeds this threshold, the keys are considered to be single-clicks, and the double-click input is invalid. Furthermore, the keys must be pressed simultaneously; if the time interval exceeds a certain threshold, such as 1 second, the keypress is considered invalid.
[0073] In some embodiments, before discarding the characters inputted by the braille keyboard, the method further includes:
[0074] Determine whether the time control key is pressed;
[0075] If the time control key is not pressed, the process proceeds to the step of discarding the characters inputted by the Braille keyboard.
[0076] This application provides a keystroke method that does not consider time intervals, such as setting a time control key. Taking the upper left shift key as an example, if the time control key is not pressed, if an upper braille symbol and a lower braille symbol are not entered within a preset time, the keystroke is determined to be invalid and the entered keystroke is discarded.
[0077] In some embodiments, after determining whether the time control key is pressed, the method further includes:
[0078] If the time control key is pressed, determining whether a character corresponding to the upper half of the braille symbol and a character corresponding to the lower half of the braille symbol are input respectively;
[0079] If a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively, the character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol input are combined according to the preset corresponding rules;
[0080] If there is no character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol respectively inputted, the step of discarding the braille symbol inputted by the braille keyboard is entered.
[0081] If the time control key is pressed, it means that the time issue is not considered at this time. As long as one upper half and one lower half braille symbol are entered, it can be considered to be possible to splice. If two upper halves or two lower halves are entered, it is still considered illegal and needs to be discarded.
[0082] Figure 3 This is a schematic diagram of the structure of a control system of a Braille keyboard provided by the present invention, wherein the control system of the Braille keyboard comprises:
[0083] The first judgment unit 31 is configured to, when the braille keyboard is pressed, determine whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are respectively input and the time interval between the inputs is less than a preset time; if so, trigger the splicing unit; if not, trigger the discarding unit;
[0084] a combining unit 32 for combining the character corresponding to the upper half of the input braille symbol with the character corresponding to the lower half of the input braille symbol according to a preset corresponding rule;
[0085] The upper and lower braille symbols are both four-dot braille symbols obtained by splitting the eight-dot braille symbols up and down. The braille keyboard is a full QWERTY keyboard with braille symbols printed on it, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed.
[0086] The output unit 33 is used to determine the eight-dot braille symbol corresponding to the combined character and output it.
[0087] Based on the above embodiment:
[0088] The splicing unit 32 is specifically used to splice the braille symbols inputted in the left-hand input area with the braille symbols inputted in the right-hand input area, according to which the braille symbols inputted in the left-hand input area are on the left and the braille symbols inputted in the right-hand input area are on the right.
[0089] Also includes:
[0090] The discard unit is used to discard characters input by the braille keyboard.
[0091] The second judgment unit is used to judge whether the time control key is pressed; if not, the discarding unit is triggered; if so, the third judgment unit is triggered;
[0092] The third judgment unit is used to judge whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively; if so, the process enters the splicing unit 32; if not, the discarding unit is triggered.
[0093] For an introduction to the control system of the Braille keyboard provided in this application, please refer to the above embodiment and will not be repeated here.
[0094] Figure 4 This is a schematic structural diagram of a control device for a Braille keyboard provided by the present invention, the control device for the Braille keyboard comprising:
[0095] Memory 41, for storing computer programs;
[0096] The processor 42 is configured to implement the steps of the above-mentioned Braille keyboard control method when executing a computer program.
[0097] For an introduction to the control device of the Braille keyboard provided in this application, please refer to the above embodiments and will not be repeated here.
[0098] Figure 2 This is a schematic diagram of a Braille keyboard provided by the present invention, which includes the above-mentioned Braille keyboard control device.
[0099] Figure 2 The black dot in the middle is the raised part, which is used for users to touch and press. The letters are the markings of a normal keyboard.
[0100] In some embodiments, each braille symbol in the upper half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the left-hand input area of the braille keyboard, and each braille symbol in the lower half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the right-hand input area of the braille keyboard.
[0101] In some embodiments, further comprising an indexer;
[0102] The index symbol is a raised touch symbol located on the F and J keys of a full QWERTY keyboard.
[0103] Index characters are used to assist input.
[0104] For an introduction to the Braille keyboard provided in this application, please refer to the above embodiments and will not be repeated here.
[0105] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.
[0106] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.
[0107] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A method for controlling a braille keyboard, characterized in that: include: When the braille keyboard is pressed, determining whether a character corresponding to an upper braille symbol and a character corresponding to a lower braille symbol are respectively input and the time interval between the inputs is less than a preset time; If a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively and the time interval between the inputs is less than a preset time, the character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol input are combined according to a preset corresponding rule; The upper and lower braille symbols are both four-dot braille symbols obtained by splitting eight-dot braille symbols into upper and lower parts; the braille keyboard is a full QWERTY keyboard printed with braille symbols, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed; Determine the eight-dot braille symbol corresponding to the combined character and output it.
2. The method for controlling a braille keyboard according to claim 1, wherein: The characters corresponding to the upper and lower braille symbols of the input are combined according to the preset corresponding rules, including: The braille symbols entered in the left-hand input area and the braille symbols entered in the right-hand input area are combined in such a way that the braille symbols entered in the left-hand input area are on the left and the braille symbols entered in the right-hand input area are on the right.
3. The control method of the Braille keyboard according to any one of claims 1 to 2, characterized in that: When the braille keyboard is pressed, after determining whether a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively and the time interval between the inputs is less than a preset time, the method further includes: If there is no character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol respectively input and the time interval between the inputs is less than a preset time, the characters input by the braille keyboard are discarded.
4. The control method of the Braille keyboard according to claim 3, wherein: Before discarding the characters input by the braille keyboard, the method further includes: Determine whether the time control key is pressed; If the time control key is not pressed, the process proceeds to a step of discarding the characters inputted by the Braille keyboard.
5. The control method of the Braille keyboard according to claim 4, characterized in that: After determining whether the time control key is pressed, it also includes: If the time control key is pressed, determining whether a character corresponding to the upper half of the Braille symbol and a character corresponding to the lower half of the Braille symbol are input respectively; If a character corresponding to the upper braille symbol and a character corresponding to the lower braille symbol are input respectively, the character corresponding to the upper braille symbol and the character corresponding to the lower braille symbol input are combined according to the preset corresponding rules; If there are no characters corresponding to the upper and lower braille symbols respectively input, the process proceeds to a step of discarding the braille symbols input by the braille keyboard.
6. A control system for a Braille keyboard, characterized in that: include: a first judging unit configured to judge, when the braille keyboard is pressed, whether a character corresponding to an upper braille symbol and a character corresponding to a lower braille symbol are respectively input and whether the time interval between the inputs is less than a preset time; and if so, triggering a combining unit; The combining unit is configured to combine the character corresponding to the upper half of the input Braille symbol with the character corresponding to the lower half of the input Braille symbol according to a preset corresponding rule; The upper and lower braille symbols are both four-dot braille symbols obtained by splitting eight-dot braille symbols into upper and lower parts; the braille keyboard is a full QWERTY keyboard printed with braille symbols, and the braille symbols in the left-hand input area and the right-hand input area are symmetrically distributed; The output unit is used to determine the eight-dot Braille symbol corresponding to the combined character and output the eight-dot Braille symbol.
7. A control device for a Braille keyboard, characterized in that: include: memory for storing computer programs; A processor, configured to implement the steps of the method for controlling a Braille keyboard according to any one of claims 1 to 5 when executing the computer program.
8. A Braille keyboard, characterized in that: A control device comprising the Braille keyboard as claimed in claim 7.
9. The braille keyboard according to claim 8, wherein: Each braille symbol in the upper half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the left-hand input area of the braille keyboard, and each braille symbol in the lower half obtained by splitting the eight-dot braille symbol up and down corresponds one-to-one to each key in the right-hand input area of the braille keyboard.
10. The braille keyboard according to claim 8, wherein: Also includes indexers; The index symbol is a raised touch symbol, which is set on the F key and J key of the QWERTY full keyboard; The index is used to assist input.