CN103186247A - Formula input method and system - Google Patents
Formula input method and system Download PDFInfo
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Abstract
The invention provides a formula input method and system, belongs to the technical field of input type setting, and can solve the problems that a conventional formula input technology is difficult to grasp, results are not straightforward, the operation is troublesome, the efficiency is low, the accuracy is low, or the formula input technology depends greatly on other factors. The formula input method includes that a voice input signal is obtained by a voice input unit; a voice recognition unit is used for obtaining a formula element which is matched with the voice input signal from a pre-stored formula element table, wherein the formula element is a content unit which is used in a formula, and a corresponding relation between the formula element and the voice input signal is stored in the formula element table; and the obtained formula element is input to the position of a cursor. The formula input system comprises function units corresponding to the steps in the formula input method. The formula input method and system can be used for imputing formulas into electronic devices, in particular to an RIA (rich internet applications) system based on HTML5 (hypertext markup language 5).
Description
Technical field
The invention belongs to the input typesetting system field, be specifically related to a kind of formula input method and system.
Background technology
Along with popularizing of electronic equipment, Internet education technology etc., the operation of input formula is more and more common in the electronic equipment.Since often use in the formula many special contents (as Δ, ≌, ± etc.) and form (content is divided into as horizontal score line about two parts), and these special content One's name is legions, be difficult to directly inputs such as keyboards, therefore more more complex than the operation of the conventional linear text of input (as Chinese character, English word) to the operation of electronic equipment input formula, need to use specific process.Existing formula input method comprises following three kinds:
First kind is the script command input method, namely imports specific script command to electronic equipment, and equipment is converted to typesetted formula with script command afterwards.
Second kind is the input method of What You See Is What You Get, and namely the user selects content required in the formula, form etc. by specific inputting interface, arranges formula gradually in the mode of What You See Is What You Get.
The third is hand-written inputting method, and namely by the required formula of the direct handwriting input in handwriting input unit, the person's handwriting recognition unit identifies and be converted to the accessible form of electronic equipment again to it.
The inventor finds that there are the following problems at least in the prior art: the script command input method must be known specific script command rule and just can use, only be fit to be subjected to the personnel of professional training, use difficulty height, and input results is (can only see order but not formula during input) directly perceived not, is easy to generate mistake.The input method of What You See Is What You Get is more easily learned, but its input operation complexity will be carried out work such as a large amount of interface switchings, symbolic look-up, inefficiency, and input speed is slow.Hand-written inputting method is fairly simple, but the necessary disposable input of formula is intact, can not be split, and is difficult to revise in case make mistakes; Simultaneously, owing to comprised a large amount of special contents and form in the formula, so be difficult to accurately the content in the formula be identified, its identification accuracy is compared the identification accuracy of conventional linear text much lower (it is just higher especially will once the full content of whole formula all to be identified correct difficulty), and the degree of dependence of factors such as this method adversary write device, individual person's handwriting is very high.
Summary of the invention
Technical matters to be solved by this invention comprises, at existing formula input method or be difficult to grasp, the result is not directly perceived, or troublesome poeration, inefficiency, or accuracy is low, the problem big to the other factors dependency degree, provide that a kind of convenience is easy-to-use, visual result, simple to operate, input efficiency is high, accuracy good, the result is easy to revise, the formula input method low to the other factors dependency degree.
The technical scheme that solution the technology of the present invention problem adopts is a kind of formula input method, comprising:
Obtain voice input signal by voice-input unit;
Utilize voice recognition unit, in the formula list of elements that prestores, obtain the formula element with described voice input signal coupling, wherein said formula element is the content element of using in the formula, stores the corresponding relation of described formula element and voice input signal in the described formula list of elements;
The described formula element that obtains is input to the cursor position place.
In formula input method of the present invention, form formula by the formula element that phonetic entry is required, as long as therefore it can " say " formula that will import, need not learn specially, convenient easy-to-use, simple to operate, the input efficiency height, accuracy is good, and the formula of importing directly provides visual result, be easy to revise, do not need to use handwriting input device, keyboard etc., to other factors dependency degree low (especially portable electric appts does not often have keyboard, mouse etc., so the present invention is more suitable to it).
Wherein, described " formula " refers to the formula of any sciemtifec and technical sphere, comprises mathematical expression (theorem formula, equation, equation, inequality, calculating formula etc.), chemical formula (reaction equation etc.), physical equation etc.Described " formula element " comprises any content element of using in scientific and technological formula, it can be various ways such as letter, numeral, symbol, figure, trigonometric function, measurement unit, chemical formula, structural formula; And the formula element also can have format information, and for example some formula element must be subscript.In described " the formula list of elements ", formula element also can corresponding a plurality of voice input signals, and a voice input signal also can corresponding a plurality of formula elements.
Preferably, described obtain voice input signal by voice-input unit before, also comprise: utilize mode switch element to enter the formula input pattern, under described formula input pattern, only allow the described formula element of input.
Preferably, the described voice recognition unit that utilizes, obtain the formula element that mates with described voice input signal and comprise in the formula list of elements that prestores:
Utilize voice recognition unit, described voice input signal is converted to Word message;
From the described formula list of elements, obtain the formula element with described Word message coupling.
Further preferably, described Word message comprises Chinese information and/or english information.
Preferably, the described formula element that obtains in the formula list of elements that prestores with described voice input signal coupling comprises: obtain the formula element with described voice input signal coupling in the formula list of elements that is prestoring by the fuzzy matching mode.
Preferably, obtain in the step of obtaining voice input signal by voice-input unit and the formula list of elements that prestoring and the step of the formula element of described voice input signal coupling between, also comprise: utilize voice recognition unit, judge whether described voice input signal is letter or number, if then described letter or number is input to the cursor position place, then enter next step if not.
Preferably, also comprise: select signal selective light cursor position according to the position, it is by at least a input in voice-input unit, keyboard, mouse, the touch-screen that signal is selected in described position.
Preferably, after the described formula element that will obtain is input to the cursor position place, also comprise: according to the formula element selective light cursor position of importing.
Technical matters to be solved by this invention also comprises, at existing formula input technology or be difficult to grasp, the result is not directly perceived, or troublesome poeration, inefficiency, or accuracy is low, the problem big to the other factors dependency degree, provide that a kind of convenience is easy-to-use, visual result, simple to operate, input efficiency is high, accuracy good, the result is easy to revise, the formula input system low to the other factors dependency degree.
The technical scheme that solution the technology of the present invention problem adopts is a kind of formula input system, comprising:
Voice-input unit is used for obtaining voice input signal;
Voice recognition unit is used for the described voice input signal of identification;
Formula element acquiring unit, be used for the storage formula list of elements, and according to the recognition result of described voice recognition unit, in the described formula list of elements, obtain the formula element with described voice input signal coupling, wherein said formula element is the content element of using in the formula, stores the corresponding relation of described formula element and voice input signal in the described formula list of elements;
Formula element input block, the described formula element that is used for obtaining is input to the cursor position place.
In formula input system of the present invention, form formula by the formula element that phonetic entry is required, as long as therefore it can " say " formula that will import, need not learn specially, convenient easy-to-use, simple to operate, the input efficiency height, accuracy is good, and the formula of importing directly provides visual result, be easy to revise, do not need to use handwriting input device, keyboard etc., to other factors dependency degree low (especially portable electric appts does not often have keyboard, mouse etc., so the present invention is more suitable to it).
Preferably, also comprise: mode switch element, be used for described formula input system is switched between formula input pattern and non-formula input pattern, under described formula input pattern, only allow the described formula element of input.
The present invention is used for to electronic equipment input formula, is specially adapted to carry out the formula input in RIA (Rich Internet Applications, the rich internet is used) system based on HTML5.
Description of drawings
Fig. 1 is the schematic flow sheet of the formula input method of the embodiment of the invention 2.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Embodiment 1:
Present embodiment provides a kind of formula input method, and it may further comprise the steps:
Obtain voice input signal by voice-input unit.
Utilize voice recognition unit, obtain the formula element that mates with voice input signal in the formula list of elements that prestores, wherein the formula element is the content element of using in the formula, stores the corresponding relation of formula element and voice input signal in the formula list of elements.
The formula element that obtains is input to the cursor position place.
In the formula input method of present embodiment, form formula by the formula element that phonetic entry is required, as long as therefore it can " say " formula that will import, need not learn specially, convenient easy-to-use, simple to operate, the input efficiency height, accuracy is good, and the formula of importing directly provides visual result, be easy to revise, do not need to use handwriting input device, keyboard etc., to other factors dependency degree low (especially portable electric appts does not often have keyboard, mouse etc., so the present invention is more suitable to it).
Embodiment 2:
Present embodiment provides a kind of formula input method, and as shown in Figure 1, it may further comprise the steps:
S01, preferred, the constructive formula list of elements store the corresponding relation of formula element and voice input signal in this formula list of elements, and the formula element is the content element of using in the formula; That is to say, as shown in table 1, collect various content element (formula element) commonly used in the formula, and set up a database, these content element and certain voice input signal are mapped.
The signal table of corresponding relation in table 1, the formula list of elements
Wherein, " formula element " comprises any content element that arrives of using always, the just a few of listing in the table 1 in scientific and technological formula; The formula element can be various ways such as letter, numeral, symbol, figure, trigonometric function, measurement unit, chemical formula, structural formula, as " X ", " b ", " 9 ", " 3.14 ", " β ", " Δ ", " Ω ", " ⊥ ", " ∴ ", "
", " ∑ ", " ∫ ", " → ", " sin ", " km/h ", " Fe ", " CH
4",
Can be regarded as the formula element Deng all; Obviously, the data mode when various dissimilar formula elements are stored in the formula list of elements is also different, and what have can be coding (as the Unicode code), and what have can be character string (as sin, CH
4Deng), what have can be figure (as the special symbol that do not have in the Unicode code, chemical structural formula etc.); As long as when using certain formula element, system can be from the formula list of elements extracts it and be input in the formula and gets final product.Simultaneously, the formula element also can have format information, for example expression " square " the formula element says from the angle of " char " and is a numeral " 2 ", but it is necessary for the subscript form simultaneously, and formula element " horizontal score line " is seen as horizontal line one from form, but it has become original input area two parts up and down simultaneously.
Then stored the corresponding relation of formula element and voice input signal in the formula list of elements, stipulated namely what formula element which type of voice input signal represents.Obviously, this corresponding relation can be set arbitrarily, but from angle consideration easily, usually can certain formula element is corresponding with the voice input signal that represents its pronunciation or meaning.For example, formula element " β " is corresponding for the voice input signal of " beta " with pronunciation, and formula element " ∑ " and pronunciation are that the voice input signal of " summation " is corresponding etc.
Obviously, for same formula element, different individuals, different language may be expressed it with different voice.Therefore, as shown in table 1, formula element can corresponding a plurality of voice input signals; For example, formula element " ∑ " except with pronunciation for the voice input signal of " summation " corresponding, also can be corresponding for a plurality of voice input signals that " summation number ", " Sigma ", " Sigma ", " sum " (English) wait with pronunciation, and trigonometric function " cos " can be that a plurality of voice input signals of " can match sound ", " the stingy sound of matching ", " cosine ", " cosine function ", " cosine " (English) etc. are corresponding with pronunciation.Equally, voice input signal also can corresponding a plurality of formula elements, such as pronunciation be " more than or equal to " voice input signal can be corresponding "
" and "
" two formula elements, pronunciation be " integration " voice input signal can the corresponding sign of integration " ∫ " and the double product branch "
" etc.
Concrete data corresponded manner from the formula list of elements can be that the formula element is directly corresponding with voice input signal (sound signal), and for example formula element " β " is corresponding with the pronunciation of " beita " (phonetic); Perhaps, also can be that the formula element is corresponding with Word message, and this literal information be corresponding with voice input signal, this Chinese phrase of " β " correspondence " beta " for example, and the pronunciation of " beta " correspondence " bei ta " (phonetic).
Certainly, the concrete database format that adopts of the concrete quantity of the formula element of storing in the formula list of elements, kind and the formula list of elements etc. all can change according to demand.For example, when being mainly used in importing chemical formula (as reaction equation), the related content (as chemical formula, structural formula etc.) of collection chemical field that can be more; For another example, if adopt directly input alphabet and numeral such as speech recognition technology or keyboard, then can not comprise letter and number (but this moment, letter and number still belonged to the formula element) in the formula list of elements.
Certainly, if there is not the step of this constructive formula list of elements, and the formula list of elements that prestores before directly using also is feasible.
S02, preferred utilizes mode switch element to enter the formula input pattern, under the formula input pattern, only allows input formula element; That is to say, make system enter one " AD HOC ", following of this pattern allows input to be defined as the content of formula element, and does not allow to import non-formula element contents such as Chinese character, English word.Concrete, this mode switch element can be any unit that can receive switching signal, for example microphone, keyboard, mouse, touch-screen etc.
Obviously, what people used always in the linear text input process of routine is contents such as Chinese character, English word mostly, and these contents can appear in the formula hardly; That is to say that when the input formula, the content that is not identified as the formula element almost can not occur.Therefore, if the content that Chinese character etc. does not belong to the formula element in the formula input process, constantly occurs, there is not help for input, and the carrying out that only can disturb input.Such as, when the user sends the voice of " jia " (phonetic), generally (in other words under the non-formula input pattern) system can provide " add; the folder; family; first; merchant " etc. many Chinese characters allow the user select, but when the input formula, user's the meaning obviously is not to import these Chinese characters, but to import formula element "+" (" plus sige "), if this moment, system still provided many Chinese characters such as " adding; folder; family; first; the merchant ", then can interference user, make it be difficult to find correct formula element "+", and also can increase the operand of system, reduce input speed.As seen, by setting the formula input pattern, can when the input formula, only allow to import the content (just " content that may be used for formula ") that is defined as the formula element, and the content that shielding can not occur in formula, thereby reduced system's operand, made things convenient for user's operation; And when the conventional linear text of input, can enter non-formula input pattern again and input according to a conventional method (also can forbid the formula list of elements this moment, in order to avoid the conventional input of special formula element influence).
Certainly, allow the particular content of input relevant with the identification of formula element under the formula input pattern; For example Chinese phrase " heating " may be the reaction conditions of chemical equation, allows its input so it can be regarded as the formula element; English alphabet, sin, tan etc. are contents common in the formula for another example, allow input so they can be regarded as the formula element, but the English word that this class of where, email may be used in formula hardly just can not be imported (input alphabet that certainly can be one by one and form these words, but input this moment is not " word " but " letter ").
Obviously, above-mentioned restriction to the input content can realize by different ways.For example, can when voice input signal is identified, limit it and can only be identified as the formula element, perhaps can when voice input signal is mated, only from the formula list of elements, search matching result, perhaps also can before providing input results, shield the content that does not belong to the formula element.Because its concrete implementation method is various, and can realize by existed algorithms, so no longer its concrete operation process is described in detail at this.
Certainly, if do not use the formula input pattern, but carrying out the formula input under normal mode, also is feasible.
S03, obtain voice input signal by voice-input unit; Be that the user " says " content of the formula that will import to equipment such as microphones, and these equipment are noted voice signal, are converted to the accessible voice input signal of electronic equipment.
Certainly, the user can once finish the full content of a formula herein, and system splits and input one by one after whole voice input signals are noted, and perhaps the user also can say each voice input signal gradually according to the progress of formula input.For example, if will import formula " c=b+a ", the user can say " c equals b and adds a " continuously to microphone, also can first talk about " c ", treats to occur on the screen saying " equaling " again behind the alphabetical c, treats to occur on the screen saying other content more successively after "=".
S04, preferred, utilize voice recognition unit, judge whether voice input signal is letter or number, if then letter or number is directly inputted to cursor position place (directly entering step S07 in other words), then enter subsequent step (namely entering step S05) if not.
Obviously, very ripe, accurate to the identification of letter (as English alphabet), numeral in the prior art, and the letter, the numeral in formula, be in daily use, so when voice input signal indicates to import simple letter, numeral etc., can not use the formula list of elements, and direct letter, the numeral that speech recognition is obtained imported in the formula, thereby takes full advantage of existing speech recognition technology, the operand that the minimizing system is required.At this moment, letter, numeral etc. need not be incorporated in the formula list of elements, but they still can be identified as formula element (but for example all letter and numbers of special provision are the formula element), to guarantee that they also can be transfused under the formula input pattern.
Certainly, if carry out this step, and the formula list of elements also put in letter, numeral etc., with other formula element also be feasible by the same manner input.
S05, utilize voice recognition unit, in the formula list of elements that prestores, obtain the formula element with the voice input signal coupling; Namely determine according to voice input signal what content the user will import.
Preferably, this step specifically can comprise:
S051, utilize voice recognition unit, voice input signal is converted to Word message, this literal information is preferably Chinese information and/or english information; For example, send the sound of " qiu he " (phonetic) or " S Λ m " (phonetic symbol) as the user after, voice recognition unit can be converted into Chinese phrase " summation " or English word " sum ".
S052, from the formula list of elements, obtain the formula element with Word message coupling; Namely from the formula list of elements, extract the formula element " ∑ " corresponding with Chinese phrase " summation " or English word " sum ".
Why preferably use this elder generation that voice input signal is converted to Word message, searches the method for respective formula element with Word message again, be based on following reason:
For same formula element, the pronunciation of different individuals, different language has a great difference, the voice input signal that is same formula element correspondence may have bigger difference, and voice input signal (sound signal) is again a kind of sophisticated signal that contains bulk information, so directly this complexity, various voice input signal are mapped with the formula element (constructing the formula list of elements that voice input signal is direct and the formula element is corresponding in other words) is very difficult.And the technology that voice input signal is converted to Word message (for example Chinese information, english information) comparative maturity, it is also fairly simple to set up corresponding relation (constructing the Word message formula list of elements corresponding with the formula element in other words) between Word message and formula element.In above-mentioned example, when using this method for optimizing, as long as formula element " ∑ " and " summation ", " sum " two character strings simple, that determine are associated, and need not consider that difference is individual, different language is to the difference of formula element " ∑ " pronunciation.Therefore, but this method for optimizing better utilization prior art is more convenient, realize the input of formula more accurately.
Certainly, when using this method, also not necessarily whole voice input signals all to be converted to Word message, for example for simple letter, numeral etc., the method Direct Recognition of S04 and input set by step.
Certainly, if do not use above-mentioned conversion, and directly with the formula element corresponding with voice input signal also be feasible.
Preferably, can in the formula list of elements that prestores, obtain the formula element that mates with voice input signal by the mode of fuzzy matching in this step; So that the user to be provided when voice input signal is not up to standard required formula element as far as possible accurately.Such as, when importing formula element " β ", because user's cacoepy or the interference of outside noise, voice input signal has been converted to Chinese phrase " Bei Ta " by voice recognition unit, can not find in the formula list of elements this moment and its formula element that accurately mates, so can use the fuzzy matching mode, assert that " Bei Ta " and " beta " two Chinese phrases can be equal under fringe, thereby from the formula list of elements, obtain formula element " β " according to " Bei Ta " Chinese phrase.Certainly, this fuzzy matching can be as shown in Figure 1, only just carry out (be conducive to reduce operand like this and guarantee the accuracy of input in most cases) when not finding the formula element of accurate coupling, but it can carry out always also, perhaps also can be to carry out according to user's selection.Certainly, when using directly that the formula element is corresponding with voice input signal (sound signal) mode, fuzzy matching also is suitable for.Because concrete fuzzy matching calculating process has multiple known way, so just be not described in detail at this.
Obviously, as previously mentioned, corresponding a plurality of formula elements of voice input signal possibility in the formula list of elements, and fuzzy matching also may cause a voice input signal corresponding a plurality of formula elements after Fuzzy Processing.Therefore, after getting access to some voice input signal, system may find a plurality of formula elements corresponding with this voice input signal.At this moment, just need select signal to determine and which formula element should be input in the formula according to the formula element.Certainly, it is various that this formula element is selected the input mode of signal, for example imports the numbering of alternative formula element by voice-input unit or keyboard, perhaps clicks alternative formula element etc. by mouse or touch-screen; Because this selection is technology conventional in the input field, so no longer specifically describe at this.
Certainly, also might can not find the content corresponding with voice input signal in the formula list of elements, can finish input this moment, for example do not do any reaction (namely not providing any input results), perhaps provide miscue, perhaps begin to handle automatically next voice input signal etc.
S06, the formula element that obtains is input to the cursor position place; That is to say, to desired location place input formula element, obtain input results.
Obviously, in the process of formula input, often need to select and whither to import, also need sometimes the result who has imported is made amendment, therefore often want the operation of selective light cursor position (i.e. selection will to where importing).Therefore, preferred, the method for present embodiment also comprises:
Select signal selective light cursor position according to the position, it is by at least a input in voice-input unit, keyboard, mouse, the touch-screen that signal is selected in this position.
That is to say, where necessary, can select the position at cursor place by voice-input unit (for example saying " to the right ", " downwards " etc.), keyboard (as pressing directionkeys), mouse (as clicking ad-hoc location), touch-screen (as clicking ad-hoc location) etc., in order to the formula element is input to the desired position, guarantee the flexible, accurate of input, and be convenient to formula is made amendment.
S07, preferred is after the formula element that will obtain is input to the cursor position place, according to the formula element selective light cursor position of importing; That is to say, after having imported a formula element, if this formula element has specific call format, then automatically cursor is moved to the position of requirement.
Obviously, some formula element inevitable requirement has other content in specific location; For example for " horizontal score line ", its inevitable requirement respectively has certain content as molecule and denominator at the horizontal line upper and lower, for another example for " integral sign ", and the content in its inevitable requirement limited definite integral interval on the right side.Therefore, behind this class formula element of input, can cursor be automatically moved to the corresponding position according to the call format of the formula element of importing just now, in order to proceed input.As for " horizontal score line ", after saying " horizontal score line " the user, system is one horizontal line of input automatically, and cursor also moves on to this horizontal line below (also can be the top certainly) automatically afterwards, so that the content of input denominator, after having imported the denominator content, the user says " making progress " two words, and cursor moves to the score line top with input molecule content, after having imported the content of molecule, the user says " to the right " two words, and it is right-hand that cursor moves to score line, continues other content of input.This method can directly move to desired location with cursor behind input specific formulation element, thereby has reduced the operation that cursor position is selected.
Below with the input process of some concrete examples explanation formula, for example, for following formula 1:
The voice that the user need read during input can be: " Delta ", " equaling ", " score line " (this moment, cursor moved on to the score line below automatically), " 2 ", " a ", " make progress " (this moment, cursor moved on to the score line top), " bear ", " b ", " plus-minus ", " radical sign " (it is interior that cursor moves on to radical sign automatically at this moment), " b ", " square ", " subtracting ", " 4 ", " a ", " c ".Certainly, the user can be once runs through the content of above-mentioned voice continuously, also can be along with input process be read gradually, and wherein when certain voice input signal related to a plurality of alternative formula element, system can provide automatically selected interface for users to select.
For another example, for following formula 2:
The voice that the user need read during input can be: " can match sound ", " x ", " equal ", " product " (this moment, cursor moved on to the product below automatically), " n ", " equal ", " 1 ", (this moment, cursor moved on to the product top) " makes progress ", " infinity ", " to the right " (this moment, cursor moved to the product right side), " left round bracket ", " 1 ", " subtract ", " score line " (this moment, cursor was automatically moved to the score line below), " 2 ", " left round bracket ", " n ", " subtract ", " 1 ", " right round bracket ", " square ", " group ", " square ", (this moment, cursor moved on to the score line top) " makes progress ", " 4 ", " x ", " square ", " to the right " (it is right-hand that this moment, cursor moved on to score line), " right round bracket ".Certainly, the user can be once runs through the content of above-mentioned voice continuously, also can be along with input process be read gradually, and wherein when certain voice input signal related to a plurality of alternative formula element, system can provide automatically selected interface for users to select.
Obviously, the formula input method of present embodiment also can carry out many variations.For example, it also can allow with content, especially some letters, numeral etc. in the auxiliary input formula such as keyboard, mouse simultaneously, may be convenient with the keyboard input; For another example, wherein the large and small state of writing of letter can be switched by Caps Lock key, also can be determined (as voice " capitalization B ", " small letter b " input " B " and " b " etc. of indicating respectively) by specific voice input signal.
Embodiment 3:
Present embodiment provides a kind of formula input system, and it comprises:
Voice-input unit is used for obtaining voice input signal; It can be conventional devices such as microphone.
Voice recognition unit is used for the identification voice input signal.
Formula element acquiring unit, be used for the storage formula list of elements, and according to the recognition result of voice recognition unit, in the formula list of elements, obtain the formula element with the voice input signal coupling, wherein the formula element is the content element of using in the formula, stores the corresponding relation of formula element and voice input signal in the formula list of elements.
Formula element input block is used for the formula element that obtains is input to the cursor position place.
Preferably, also can comprise mode switch element in the formula input system of present embodiment, be used for the formula input system is switched between formula input pattern and non-formula input pattern, under the formula input pattern, only allow input formula element; This mode switch element can be any device that can import signal specific, as button, microphone, mouse, keyboard etc.
In the formula input system of present embodiment, form formula by the formula element that phonetic entry is required, as long as therefore it can " say " formula that will import, need not learn specially, convenient easy-to-use, simple to operate, the input efficiency height, accuracy is good, and the formula of importing directly provides visual result, be easy to revise, do not need to use handwriting input device, keyboard etc., to other factors dependency degree low (especially portable electric appts does not often have keyboard, mouse etc., so the present invention is more suitable to it).
Obviously, the formula input system of present embodiment also can comprise other functional unit corresponding with each step of above-mentioned formula input method, as fuzzy matching unit, cursor position selected cell etc.; And the each processing unit in the formula input system (as voice recognition unit, formula element acquiring unit, formula element input block etc.) can be a plurality of independent devices, also can integrate, and for example is integrated into a processor and a storer; In addition, also can comprise other conventional components such as display, power supply, shell in the formula input system of present embodiment.
Be understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement also are considered as protection scope of the present invention.
Claims (10)
1. a formula input method is characterized in that, comprising:
Obtain voice input signal by voice-input unit;
Utilize voice recognition unit, in the formula list of elements that prestores, obtain the formula element with described voice input signal coupling, wherein said formula element is the content element of using in the formula, stores the corresponding relation of described formula element and voice input signal in the described formula list of elements;
The described formula element that obtains is input to the cursor position place.
2. formula input method according to claim 1 is characterized in that, described obtain voice input signal by voice-input unit before, also comprise:
Utilize mode switch element to enter the formula input pattern, under described formula input pattern, only allow the described formula element of input.
3. formula input method according to claim 1 is characterized in that, the described voice recognition unit that utilizes obtains the formula element that mates with described voice input signal and comprises in the formula list of elements that prestores:
Utilize voice recognition unit, described voice input signal is converted to Word message;
From the described formula list of elements, obtain the formula element with described Word message coupling.
4. formula input method according to claim 3 is characterized in that, described Word message comprises Chinese information and/or english information.
5. according to any described formula input method in the claim 1 to 4, it is characterized in that the described formula element that mates with described voice input signal that obtains comprises in the formula list of elements that prestores:
In the formula list of elements that prestores, obtain the formula element that mates with described voice input signal by the fuzzy matching mode.
6. according to any described formula input method in the claim 1 to 4, it is characterized in that, obtain in the step of obtaining voice input signal by voice-input unit and the formula list of elements that prestoring and the step of the formula element of described voice input signal coupling between, also comprise:
Utilize voice recognition unit, judge that whether described voice input signal is letter or number, if then described letter or number is input to the cursor position place, then enters next step if not.
7. according to any described formula input method in the claim 1 to 4, it is characterized in that, also comprise:
Select signal selective light cursor position according to the position, it is by at least a input in voice-input unit, keyboard, mouse, the touch-screen that signal is selected in described position.
8. according to any described formula input method in the claim 1 to 4, it is characterized in that, after the described formula element that will obtain is input to the cursor position place, also comprise:
According to the formula element selective light cursor position of importing.
9. a formula input system is characterized in that, comprising:
Voice-input unit is used for obtaining voice input signal;
Voice recognition unit is used for the described voice input signal of identification;
Formula element acquiring unit, be used for the storage formula list of elements, and according to the recognition result of described voice recognition unit, in the described formula list of elements, obtain the formula element with described voice input signal coupling, wherein said formula element is the content element of using in the formula, stores the corresponding relation of described formula element and voice input signal in the described formula list of elements;
Formula element input block, the described formula element that is used for obtaining is input to the cursor position place.
10. formula input system according to claim 9 is characterized in that, also comprises:
Mode switch element is used for described formula input system is switched between formula input pattern and non-formula input pattern, under described formula input pattern, only allows the described formula element of input.
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