CN101751200B - Space input method for mobile terminal and implementation device thereof - Google Patents

Abstract

The invention provides a space input method for a mobile terminal and an implementation device of the space input method. The space input method comprises the following steps: sensing original sampling data of a sliding track of the mobile terminal in a three-dimensional space; sensing an inclination angle of the mobile terminal in the three-dimensional space; representing the sensed original sampling data of the sliding track of the mobile terminal in the three-dimensional space into three-dimensional coordinate data, and processing the three-dimensional coordinate data into two-dimensional coordinate data; applying a handwriting recognition algorithm to the two-dimensional coordinate data to carry out track recognition of characters, and recognizing a candidate character set of the characters; determining a relative change value of the inclination angle of the mobile terminal in the three-dimensional space according to the sensed inclination angle of the mobile terminal; and aiming at recognized codes of the characters, calling character libraries of the corresponding language characters, displaying the candidate characters on the mobile terminal, and making highlighting positions of the candidate characters on the mobile terminal move left and right correspondingly according to the relative change value of the inclination angle of the mobile terminal so as to be convenient for user to select.

Description

The space input method of portable terminal and implement device thereof

Technical field

The present invention relates to a kind of input method and implement device thereof, more particularly, relate to a kind of space input method of portable terminal and the implement device of this space input method.

Background technology

Portable terminal and daily life are closely related day by day.The development of portable terminal application technology is also very fast.Along with the development of sensor technology, sensor also is applied to portable terminal more and more possibly.Literal (comprising Chinese, English, numeral, symbol etc.) input technology and method, especially the input method on portable terminal also is developed more and more.

Yet all through pushing on the keyboard corresponding key or pressing touch-screen and be performed with writing pencil/finger, input method comprises multiple input modes such as phonetic, stroke, English, numeral, symbol to present input method.But under some particular cases (for example, the user is in mobile status), the user is inconvenient to use keyboard or writing pencil/finger.Therefore, attempt a kind of brand-new more easily input method of exploitation, can not adopt keyboard or handwriting input mode (that is, being not limited to the direct input of contact portable terminal), also can accomplish the input of literal.

Summary of the invention

The present invention provides a kind of space input method of portable terminal and the implement device of this space input method.

According to an aspect of the present invention, a kind of space input method of portable terminal is provided, this space input method comprises: obtain the original sampling data of portable terminal at the sliding trace of 3 dimension spaces through the acceleration transducer unit sensing; Obtain the inclination angle of portable terminal in 3 dimension spaces through the geomagnetic sensor unit senses; The original sampling data of the sliding trace of portable terminal in the space of degree of will speed up sensor unit sensing is expressed as 3 dimension coordinate data, and said 3 dimension coordinate data processing are become the coordinate data of 2 dimensional planes; The coordinate data of 2 dimensional planes is used handwriting recognition algorithm carry out track recognition of characters, identify literal candidate group; The relative changing value at the inclination angle of portable terminal in 3 dimension spaces is confirmed at the inclination angle of portable terminal in 3 dimension spaces of base area magnetic sensor unit sensing; Coding to the literal that identifies; Call the character library of corresponding language literal; On portable terminal, show the candidate character that identifies; And according to the relative changing value at the inclination angle of portable terminal in 3 dimension spaces, the high bright display position that makes the candidate character on the portable terminal is move left and right correspondingly, so that the user selects.

According to a further aspect in the invention, a kind of implement device of space input method of portable terminal is provided, the implement device of this space input method comprises: acceleration transducer unit, sensing obtain the original sampling data of portable terminal at the sliding trace of 3 dimension spaces; Geomagnetic sensor unit, sensing obtain the inclination angle of portable terminal in 3 dimension spaces; The data operation processing unit, the original sampling data of the sliding trace of portable terminal in the space of degree of will speed up sensor unit sensing is expressed as 3 dimension coordinate data, and said 3 dimension coordinate data processing are become the coordinate data of 2 dimensional planes; The relative changing value at the inclination angle of portable terminal in 3 dimension spaces is confirmed at the inclination angle of portable terminal in 3 dimension spaces of base area magnetic sensor unit sensing; Literal track identification unit is used handwriting recognition algorithm to the coordinate data of 2 dimensional planes after the processing of data operation processing unit and is carried out track recognition of characters, identifies literal candidate group; Candidate shows/confirms input block; The coding of the literal that identifies to literal track identification unit; Call the character library of corresponding language literal, on portable terminal, show the candidate character identify, and according to the relative changing value at the inclination angle of portable terminal in 3 dimension spaces; The high bright display position that makes the candidate character on the portable terminal is move left and right correspondingly, so that the user selects.

Description of drawings

In conjunction with the drawings, from the description of following embodiment, the present invention these and/or others and advantage will become clear, and are easier to understand, wherein:

Fig. 1 is the block diagram according to the structure of the implement device of the space input method of the embodiment of the invention;

Fig. 2 is according to 3 dimension space paddling tracks of the embodiment of the invention synoptic diagram to the Processing Algorithm of 2 dimensional planes;

Fig. 3 is the process flow diagram according to the step of the implementation space input method of the embodiment of the invention;

Fig. 4 be according to the embodiment of the invention with 2 the dimension track identification be the synoptic diagram of five kinds of strokes;

Fig. 5 is the process flow diagram according to the selected input process of the candidate of the embodiment of the invention;

Fig. 6 is the synoptic diagram of the high bright show candidate word of acquiescence (paddling " member " word) of portable terminal;

Fig. 7 is expression comes the bright show candidate word of corresponding height according to the variation at portable terminal inclination angle a synoptic diagram;

Fig. 8 is the selected synoptic diagram according to the candidate of the embodiment of the invention;

Fig. 9 is the synoptic diagram of the demonstration of the editing machine after the expression candidate is confirmed;

Figure 10 is the synoptic diagram according to the space input under the rectilinear motion situation of the embodiment of the invention;

Figure 11 is the process flow diagram of handling according to the space input under the rectilinear motion situation of the embodiment of the invention.

Embodiment

Below, specify embodiments of the invention with reference to accompanying drawing.Hereinafter, be that example is described to import Chinese, but the invention is not restricted to this, also can import English, numeral, symbol etc.

The user uses portable terminal to write Chinese (or other Languages literal) in the space, utilizes acceleration transducer unit to obtain the paddling track of portable terminal at 3 dimension spaces, and the track of 3 dimensions is revised, and obtains the literal track of standard 2 dimensional planes.Carry out the identification of literal again through identification module.Simultaneously, in moving process, carry out the space paddling, can revise the displacement component under the rectilinear motion situation, put in order and obtain paddling input accurately through acceleration transducer unit for the ease of the user.At last, obtain literal through search algorithm module.

Special in Chinese, can to Chinese words horizontal, vertical, cast aside, press down, 5 kinds of strokes of folding discern.Then, utilize existing T9 or the retrieval of other input method to obtain the UNICODE sign indicating number of Chinese character to the combination of 5 kinds of strokes of identification, so on portable terminal the show candidate Chinese character.

Portable terminal carries out the inclination of position, left and right sides respective angles, by the variation at the inclination angle of geomagnetic sensor unit senses portable terminal, comes correspondingly to change the high bright selection of the candidate of portable terminal according to the variation at the inclination angle of portable terminal.At last, on selected position the more downward whipping through the acceleration transducer unit sensing user move the input of confirming literal.

The space input method of this portable terminal is the brand-new character input method that is different from keyboard input, handwriting input.

The realization of portable terminal space input method comprises and utilizes acceleration transducer unit to realize that on portable terminal this new input method, 3 dimension spaces are to the recurrence recognizer of 2 dimensional planes and the input step of this input method.

Fig. 1 is the structured flowchart of the implement device of space input method.The implement device of this space input method can be applicable to portable terminal, and comprises: acceleration transducer unit 110, geomagnetic sensor unit 120, data storage cell 130, data operation processing unit 140, literal track identification unit 150 and candidate show/confirm input block 160.

Under the situation that the user imports, acceleration transducer unit 110 sensings obtain the original sampling data of portable terminal at the sliding trace of 3 dimension spaces, and the original sampling data of sensing is stored in the data operation processing unit 130.

Under the situation that the user imports; Geomagnetic sensor unit 120 sensings obtain the inclination angle of portable terminal at 3 dimension spaces; And the movement direction angle with respect to initial setting reference coordinate system of portable terminal when the rectilinear motion state, and with the value storage of these sensings in data storage cell 130.

The raw data that data storage cell 130 storage acceleration transducer units and geomagnetic sensor unit senses obtain is to be called by data operation processing unit 140.

Data operation processing unit 140 can be carried out following operation: the original sampling data of the skyborne sliding trace of portable terminal that (1) degree of will speed up sensor unit 110 obtains is expressed as 3 dimension coordinate data; Said 3 dimension coordinate data are become the coordinate data of 2 dimensional planes, and the coordinate data of 2 dimensional planes is sent to literal track identification unit 150 discern; (2) handle 120 initial data of sending, based on the initialization reference coordinates, confirm the direction of user under linear state, and handle its influence the literal track from the geomagnetic sensor unit; (3) based on 120 initial data of sending from the geomagnetic sensor unit; Confirm the relative changing value of portable terminal at the inclination angle of 3 dimension spaces; And definite portable terminal left, to the right, downward whipping; To confirm user's selection to candidate when reading the portable terminal candidate, the calculation process result is sent to the parameter foundation that candidate shows/confirm that input block 160 is carried out as show process; (4), adopt accordingly and handle to different literal characteristics.To describe the concrete operations and the algorithm of data operation processing unit 140 below in detail.

Literal track identification unit 150 is to the literal track sample point coordinate array data of data operation processing unit 140 through 2 dimensional planes after the calculation process; The handwriting recognition algorithm of using various spoken and written languages carries out track recognition of characters, identifies possible candidate group.If especially to Chinese character, literal track identification unit 150 can also only identify the paddling track in the space stroke (that is, horizontal, vertical, cast aside, press down, totally 5 kinds of foldings).The 150 pairs of Chinese characters in literal track identification unit are discerned, and obtain the coding (for example, UNICODE sign indicating number) of candidate through searching algorithm.

The coding that candidate shows/confirm the literal that input block 160 identifies to literal track identification unit 150 (for example; The UNICODE sign indicating number); Call the character library of corresponding language literal; Through the Presentation Function module at mobile terminal displays identified text and other possible candidate character, with the editing machine of and input portable terminal finally selected by the user.Particularly, candidate shows/confirms the relative changing value of input block 160 according to the inclination angle of portable terminal in 3 dimension spaces, and the high bright display position that makes the candidate character on the portable terminal is move left and right correspondingly, so that the user selects.

The algorithm of 3 dimension spaces input identification is described below.

Any spoken and written languages all are positioned on the plane of one 2 dimension space.But during the paddling writing words, owing to the reasons such as individual character of writing the people, the actual literal track numerical value that obtains is the numerical value of 3 dimension spaces in one 3 dimension space.Therefore, this track is carried out handling at the regressing calculation of 2 dimensional planes, obtain revised 2 dimensional plane track numerical value.Can use handwriting recognition algorithm then revised 2 dimensional plane tracks are carried out the identification of literal.

Specific algorithm is following:

1, it is abstract the track on 3 dimension spaces to be carried out mathematical model: (x, y), wherein, (set z) is the original sample point set to z=f for x, y.Z is the Z coordinate axis of 3 dimension spaces; X is the X coordinate axis of 3 dimension spaces; Y is the Y coordinate axis of 3 dimension spaces.For the ease of describing,, therefore be decided to be the Y axle to reference system coordinate axis perpendicular to surface level because the people is the direction perpendicular to earth surface level as a rule; The direction right with people's appearance, promptly a direction paralleling of surface level (as Due South to) be the Z axle.The direction parallel with people's appearance, another direction that promptly parallels in surface level (like the due east direction) is the X axle.As specify that not the local reference coordinate system of other among this paper is identical with here.

2, from 3 tie up 2 dimension spaces correcting process be: statistics binary regression algorithm.

Bivariate regression model is y=β ₀+ β ₁x ₁+ β ₂x ₂+ μ, wherein μ representes error term.Through least square principle with parameter beta ₀, β ₁, β ₂Estimation is come out.For this reason, the corresponding estimator of supposing these parameters does

So, can obtain following sample regression equation: $\hat{y}={\widehat{\mathrm{\β}}}_0+{\widehat{\mathrm{\β}}}_1{x}_1+{\widehat{\mathrm{\β}}}_2{x}_2.$

(x ₁, x ₂, ) be the coordinate points set of the paddling track on revised 2 dimensional planes.Wherein,

Be the value (dependent variable) that drops on the mapping point on the regression plane behind the binary regression; x ₁For dropping on the independent variable of the mapping point on the regression plane behind the binary regression; x ₂For dropping on the independent variable of the mapping point on the regression plane behind the binary regression;

Coefficient value for binary regression equation.

Fig. 2 is the synoptic diagram of 3 dimension space paddling tracks to the Processing Algorithm of 2 dimensional planes.As shown in Figure 2, (x, y, z) set and revised (x before revising ₁, x ₂,

) corresponding.

Because x ₁, x ₂Be the track that a stroke goes out, so x ₁And x ₂Be independently not concern.At x ₁And x ₂Independently under the prerequisite, can not obtain following result like this.

3, according to statistics binary regression algorithm, can draw:

${\widehat{\mathrm{\β}}}_1=\frac{\mathrm{\Σ}\stackrel{\·}{x_2^2}\mathrm{\Σ}{\stackrel{\·}{x}}_1\stackrel{\·}{y}-\mathrm{\Σ}{\stackrel{\·}{x}}_1{\stackrel{\·}{x}}_2\mathrm{\Σ}{\stackrel{\·}{x}}_2\stackrel{\·}{y}}{\mathrm{\Σ}\stackrel{\·}{x_1^2}\mathrm{\Σ}\stackrel{\·}{x_2^2}-{\left(\mathrm{\Σ}{\stackrel{\·}{x}}_1{\stackrel{\·}{x}}_2\right)}^2}$

${\widehat{\mathrm{\&beta;}}}_2=\frac{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{{\mathrm{<figure-callout\; id="1"\; label="x"\; filenames="H2008101838398E00061.png"\; state="\{\{state\}\}">x</figure-callout>}}_1^2}\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2\stackrel{\&CenterDot;}{y}-\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_1{\stackrel{\&CenterDot;}{x}}_2\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_1\stackrel{\&CenterDot;}{y}}{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1^2}\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_2^2}-{\left(\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_1{\stackrel{\&CenterDot;}{x}}_2\right)}^2}$

${\widehat{\mathrm{\&beta;}}}_0=\stackrel{\&OverBar;}{y}-{\widehat{\mathrm{\&beta;}}}_1{\stackrel{-}{x}}_1-{\widehat{\mathrm{\&beta;}}}_2{\stackrel{-}{x}}_2$

Wherein: ${\stackrel{\&CenterDot;}{x}}_1=x_1-{\stackrel{-}{x}}_1,$ ${\stackrel{\&CenterDot;}{x}}_2=x_2-{\stackrel{-}{x}}_2,$ $\stackrel{\&CenterDot;}{y}=y-\stackrel{-}{y},$ x ₁, x ₂, y representes average.

According to top formula, can obtain binary regression equation: $\hat{y}={\widehat{\mathrm{\&beta;}}}_0+{\widehat{\mathrm{\&beta;}}}_1{x}_1+{\widehat{\mathrm{\&beta;}}}_2{x}_2.$ (x ₁, x ₂, ) point set be the set of revised point.These revised points are on 2 dimensional planes after the recurrence.

Paddling track in the space can vary with each individual, and should look various complicated situations and decides.For further improving the accuracy of 3 dimension spaces identification, can also further improve or provide the various condition hypothesis in the actual engineering of accurate simulation.This just needs to these condition hypothesis, further carries out the complicated more more accurate calculation process of mathematics of multipaths step that reaches.The mathematical processing methods that further other can adopt comprises statistical principal component analytical method, computational mathematics etc.These methods that improve the calculation process more accurately of space input discrimination targetedly also are to be understood that in this protection scope of the present invention.

4, the binary regression equation that obtains above the basis can obtain 3 dimension space sampled points are revert to 2 dimensional planes.Then, can calculate revised sampled point on this binary plane.Satisfy separating of above-mentioned binary regression equation and be revised sample point coordinate collection.

Adopt such statistics binary regression algorithm; The set of the revised sample point coordinate point that obtains is handled through the identification of the literal on 2 dimensional planes of present technical comparative maturity and is discerned, and can improve the discrimination of 3 dimension space input characters so greatly.

The detailed process of implementation space input method is described below.

Fig. 3 is the process flow diagram of the step of implementation space input method.Referring to Fig. 3, in step 301, after the user opened the space input method function, before stroke began to slide, the static t millisecond of the timer of portable terminal (ms) was expressed as the sign that the slip stroke begins after the stand-by period, begins to gather some pictures.In step 302 to step 304, acceleration transducer unit 110 sensings obtain the sampling number certificate of the aerial sliding trace of portable terminal, and the original 3 dimension sampling numbers certificates that sensing is obtained are stored in the data storage cell 130, slide up to some pictures and finish.In step 305,140 pairs of original 3 dimension sampled point data processing of data operation processing unit also are expressed as mathematical 3 dimension coordinates (x, y, z) numerical value.

In step 306; The 3 dimension coordinate arrays that 140 pairs of data operation processing units obtain use statistical binary regression algorithm to handle; Obtain revised sampled point trajectory coordinates array (x1 on one 2 dimensional plane; X2,

).Concrete algorithm is referring to top description.In addition, adopt other mathematical algorithm (for example, computational mathematics Processing Algorithm etc.) to handle coordinate points track numerical value and also can realize of the conversion correction of 3 dimension spaces, improve the discrimination of space input method to 2 dimensional planes.These methods also should be understood to and comprise within the scope of the invention.

In step 307, the 2 dimension trajectory coordinates arrays that 150 pairs of literal track identification unit obtain are discerned processing.Two kinds of methods can be arranged.The first, adopt handwriting recognition algorithm to discern the literal of track representative.The second, if stroke can be only discerned in the input of Chinese words.Because the characteristics of Chinese words are, all Chinese characters can resolve into five kinds of strokes of " horizontal stroke " (-), " erecting " (|), " left-falling stroke " (/), " right-falling stroke " (), " folding " (>), are a kind of in these 5 kinds so only need identify the stroke of institute's paddling.The recognizer that adopts can be the stroke input algorithm of prior art, referring to shown in Figure 4.The characteristics that adopt first method are that discrimination is high, can be used for various spoken and written languages.The characteristics that adopt second method are that the technical requirement that realizes is lower, can be primarily aimed at Chinese words.

In step 308, the coding of the literal that identifies (for example, UNICODE sign indicating number) is stored in the memory buffer of portable terminal.

In step 309, if desired, can carry out the input and the identification of next stroke.Judgment principle can for, some picture paddlings intact after, the static short one section timer time (Millisecond) of user.

In step 310, the coding (for example, the UNICODE sign indicating number) of the literal that identifies to literal track identification unit 150 calls the character library of corresponding language literal, through the Presentation Function module at mobile terminal displays identified text and other possible candidate character.

In step 311, the user select to confirm the literal that will import.

To describe the step of the selected input of candidate word below in detail.Geomagnetic sensor capable of using unit 120 obtains the pitch angle of portable terminal.When the user reads to shield to portable terminal, the candidate group that identifying appears in the input candidate viewing area of portable terminal, in the candidate viewing area, the candidate that is positioned at the centre position is given tacit consent to when original state and is presented high bright state.The user through about ground inclination portable terminal make the high bright display position of candidate group take place to change about corresponding.Through left, to the right, downward whipping move represent respectively the candidate group to prevpage, to the next page, choose operation, as shown in Figure 7.

Fig. 5 is the process flow diagram according to the selected input process of the candidate of the embodiment of the invention.With reference to Fig. 5, in step 501 to step 503, geomagnetic sensor unit 120 sensing portable terminals work as top rake.And preservation inclination angle numerical value.In step 504, confirm whether portable terminal is in the screen state of reading.Specifically, at portable terminal aloft behind the intact word of paddling, if the stationary state of 110 sensing a period of times of acceleration transducer unit representes that then portable terminal is in the screen state of reading.The time interval of reading to shield state is generally much larger than the time interval between the stroke.

In step 505, determine whether to read screen state (that is, aloft behind the intact word of paddling, portable terminal does not tilt at portable terminal) for initial benchmark.Read the screen state if confirm initial benchmark,, then read to shield initialized processing procedure, obtain the first primary dip value of portable terminal and it is preserved, as the user of back benchmark the selection operation of the bright candidate of height then in step 506.At this moment, give tacit consent to high bright candidate and be middle word.The demonstration of the portable terminal when for example, " member " word of paddling input aloft being shown in Fig. 6.

In step 507, if tilting, the user rocks portable terminal, the inclination angle of geomagnetic sensor unit 120 sensing portable terminals changes, and obtains current inclination angle value.

In step 508; Data operation processing unit 140 will be worked as the top rake value and compared with first primary dip value; Can obtain the tilt relative changing value at the inclination angle that portable terminal causes owing to the user, and with the size variation of this relative angle be mapped to the high bright demonstration of candidate about change.That is, the high bright position of candidate changes about taking place according to the relative variation at inclination angle, and is as shown in Figure 7.

In step 509, when the candidate show process in the startup portable terminal, need to carry out the high bright demonstration of certain candidate.In step 510, according to calculating the relative changing value at the portable terminal inclination angle that obtains, determine which candidate of the high bright demonstration left and right sides in step 508, as shown in Figure 7.

In step 511 and step 512, when the downward whipping portable terminal of user, the expression user chooses current high bright candidate; As user left during the whipping portable terminal, the forward page turning of expression candidate; As user to the right during the whipping portable terminal, the page turning backward of expression candidate is referring to Fig. 8.

More particularly; After on portable terminal, showing the candidate character that identifies; If portable terminal is whipping left, to the right or downwards; The size and Orientation of the acceleration of acceleration transducer unit 110 sensing portable terminals then, data operation processing unit 140 confirms that according to the size and Orientation of the acceleration of portable terminal portable terminal is, or downward whipping left to the right

If portable terminal is a whipping left; Then candidate shows/confirms that input block 160 is to prevpage page turning show candidate literal; If portable terminal is a whipping to the right; Then candidate shows/confirms input block 160 to the next page page turning show candidate literal, if portable terminal is downward whipping, then candidate shows/confirm the candidate character of the selected bright demonstration of current height of input block 160 definite users.

In step 513, according to the result of step 511 and step 512, corresponding candidate is chosen, and is imported into the editing machine of portable terminal, and is as shown in Figure 9.

The space input of the portable terminal under mobile environment is described below.

To the movability characteristics of portable terminal and the characteristics of importing in the space, in some cases, the user may carry out the space input under the environment that moves.To this, as long as the correction of carrying out on the corresponding algorithm just can reach the purpose that improves correct recognition rata.Be example (for example, the user carries out the situation of paddling input in the space when walking or in the moving process at vehicle) with the user along the straight-line situation of Z axle below.Disposal route does, on the corresponding horizontal face, with corresponding track (z) the z component in the coordinate components deducts for x, y, can obtain the set of the sampled point of the track of word in one plane.Rectilinear motion described here can comprise linear uniform motion and non-linear uniform motion.And, should be appreciated that, the invention is not restricted to the rectilinear motion of portable terminal is handled, for the curvilinear motion of portable terminal, also can carry out handled.As long as the correction of carrying out on the corresponding algorithm just can reach the purpose that improves correct recognition rata.For example, can set up 3 yuan mathematical model for the motion in 3 dimension spaces; The motion of curve can be set up the mathematical model of high order, and the method for the coefficient that different curvilinear motions can be through confirming the equation of higher degree is handled and obtained.So, to other mode of motion and the corresponding more complex mathematical correcting process method that adopts also should be understood in protection scope of the present invention.

Figure 10 is the synoptic diagram according to the space input under the rectilinear motion situation of the embodiment of the invention.

Shown in figure 10, for the ease of explaining, suppose that the user advances on the direction parallel with the Z axle.If the user carries out rectilinear motion on the plane of Z and X composition, Z axle and X axle are handled as long as will change into the processing of Z axle simultaneously.That is, the track of user movement vector is resolved into two parts on Z axle and X axle, these two parts are all handled.

Existing is that example describes with portable terminal motion on the direction that parallels with the Z axle.But acceleration transducer unit 110 sensings obtain the acceleration that user's portable terminal moves on Z-direction, and obtain speed and shift length value based on this acceleration.Utilizing preceding text under static state illustrated; Obtain 3 dimension space tracks and the numerical operation of 3 dimension spaces is treated to before the data of 2 dimensional planes by acceleration transducer unit 100 with regression algorithm; (X to 3 dimension space tracks of acceleration transducer unit 110 sensings; Y, Z) numerical value carries out pre-service.That is, the numerical value of corresponding Z axle is deducted the shift length value of motion of mobile terminals; Again with gained difference (being equivalent to the coordinate points that the user obtains when static) as the Z axle component parameter of carrying out regression algorithm.

Figure 11 is the process flow diagram of handling according to the space input under the rectilinear motion situation of the embodiment of the invention.

With reference to Figure 11, step 1101 to step 1105 is identical with step 301 to step 305 among Fig. 3, and step 1106 to step 1107 is identical with step 501 to step 502 among Fig. 5, no longer is repeated in this description here.

Step 1108 comprises two operations.First the operation with Fig. 5 in step 503 identical, that is, geomagnetic sensor unit 120 sensings obtain the top rake of working as of portable terminal, and preserve this inclination angle value.In second operation, geomagnetic sensor unit 120 sensings obtain the orientation angle value of portable terminal X-Z plane motion in the horizontal direction, and acceleration transducer unit 110 sensings obtain the acceleration that portable terminal moves on the X-Z plane.

In step 1109, data operation processing unit 140 is according to the shift length value of the acceleration calculation motion of mobile terminals of acceleration transducer unit 110 sensings.Example shown in Figure 10 is that the user is parallel to Z axle motion and X axle component is 0 situation.

In step 1110, data operation processing unit 140 calculates the projection components numerical value of shift length value on X and Z axle of portable terminal according to the operation result in the step 1109.This component is deducted, and the calculation process result value of gained (X ', Y ', Z ') equivalence is X, Y, the Z numerical value of user when stationary state.

Then, in step 1111, that 140 pairs of data operation processing units obtain is revised, and (X ', Y ', Z ') value is handled.Step 1111 to step 1114 is identical with step 306 to step 309 among Fig. 3, and step 1115 to step 1124 is identical with step 504 to step 513 among Fig. 5, no longer is repeated in this description here.

Be example with english lower case and Chinese below, the difference in the processing of upper layer module is described.The present invention can expand to other literal that similar language throughout characteristics are arranged, or the literal of other characteristics also has corresponding disposal route to its characteristics, can improve discrimination.Should be appreciated that above content all comprises within the scope of the invention.

For english lower case, can it be identified as a single track.Treatment step is following: a period of time of pausing before the beginning of will sliding in the air and a period of time of pausing when finishing are respectively as a beginning and the distinguishing mark that finishes;

Acceleration transducer unit 110 identifies the sample point coordinate data (coordinate datas of 3 dimension spaces) of aerial sliding trace and preserves;

Data operation processing unit 140 is with the track data on coordinate data calculation process Cheng Zaiyi 2 dimensional planes of 3 dimension spaces;

Literal track identification unit 150 adopts handwriting recognition algorithm to discern processing, thereby obtains candidate to the data after the regression treatment that obtains.

The treatment step of Chinese words is following:

The certain hour of pause is respectively as a distinguishing mark that begins and finish during with the certain hour that pauses before slip begins in the air and an end;

The characteristics of Chinese words are all to be discontinuous between two strokes, promptly after end, can move to another place and carry out second beginning; Therefore, collect the sliding trace in space at acceleration transducer unit 110 after, the aerial sliding trace of even bit is removed, only get the aerial sliding trace of odd bits; The real stroke that so just only will constitute Chinese words extracts, and omits the interference track that reference position moves between two strokes;

Data operation processing unit 140 is with the track data on coordinate data calculation process Cheng Zaiyi 2 dimensional planes of 3 dimension spaces;

Literal track identification unit 150 adopts handwriting recognition algorithm to discern processing, thereby obtains candidate to the data after the regression treatment that obtains.

Therefore, as stated, the invention provides a kind of keyboard input, the brand-new character input method of handwriting input and realization equipment of realizing this literal input method of being different from, the user does not need operation keyboard or carries out the hand-written literal that just can import expectation.

Though the present invention is specifically described with reference to its exemplary embodiment and is shown; But will be understood by those skilled in the art that; Under the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, can carry out the various changes of form and details to it.

Claims (19)

1. the space input method of a portable terminal comprises:

Obtain the original sampling data of portable terminal through the acceleration transducer unit sensing at the sliding trace of 3 dimension spaces;

Obtain the inclination angle of portable terminal in 3 dimension spaces through the geomagnetic sensor unit senses;

The original sampling data of the sliding trace of portable terminal in the space of degree of will speed up sensor unit sensing is expressed as 3 dimension coordinate data, and said 3 dimension coordinate data processing are become the coordinate data of 2 dimensional planes;

The coordinate data of 2 dimensional planes is used handwriting recognition algorithm carry out track recognition of characters, identify literal candidate group;

The relative changing value at the inclination angle of portable terminal in 3 dimension spaces is confirmed at the inclination angle of portable terminal in 3 dimension spaces of base area magnetic sensor unit sensing;

Coding to the literal candidate group that identifies; Call the character library of corresponding language literal; On portable terminal, show the candidate character identify, and according to the relative changing value at the inclination angle of portable terminal in 3 dimension spaces, the high bright display position that makes the candidate character on the portable terminal is move left and right correspondingly; So that the user selects

Wherein, obtain the coordinate data of said 2 dimensional planes through following operation:

It is abstract that the original sampling data of the sliding trace of 3 dimension spaces is carried out mathematical model: and z=f (x, y), (set z) is the original sample point set for x, y;

Set up bivariate regression model: y=β ₀+ β ₁x ₁+ β ₂x ₂+ μ, wherein μ representes error term;

Come estimated parameter β through least square principle ₀, β ₁, β ₂Estimator

Obtain binary regression equation: $\hat{y}={\widehat{\mathrm{\&beta;}}}_0+{\widehat{\mathrm{\&beta;}}}_1{x}_1+{\widehat{\mathrm{\&beta;}}}_2{x}_2,$

Wherein,

For dropping on the dependent variable of the mapping point on the regression plane, x behind the binary regression ₁And x ₂For dropping on the independent variable of the mapping point on the regression plane behind the binary regression,

${\widehat{\mathrm{\&beta;}}}_1=\frac{\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{y}-\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_2}y}{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1^2}\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2-{\left(\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\right)}^2},$ ${\widehat{\mathrm{\&beta;}}}_2=\frac{\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_1^2\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_2}\stackrel{\&CenterDot;}{y}-\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{y}}{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1^2}\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2-{\left(\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\right)}^2},$

${\widehat{\mathrm{\&beta;}}}_0=\stackrel{\&OverBar;}{y}-{\widehat{\mathrm{\&beta;}}}_1{\stackrel{\&OverBar;}{x}}_1-{\widehat{\mathrm{\&beta;}}}_2{\stackrel{\&OverBar;}{x}}_2,$

Wherein, ${\stackrel{\&CenterDot;}{x}}_1=x_1-{\stackrel{\&OverBar;}{x}}_1,{\stackrel{\&CenterDot;}{x}}_2=x_2-{\stackrel{\&OverBar;}{x}}_2,$ $\stackrel{\&CenterDot;}{y}=y-\stackrel{\&OverBar;}{y},{\stackrel{\&OverBar;}{x}}_1,{\stackrel{\&OverBar;}{x}}_2,\stackrel{\&OverBar;}{y}$ The expression average,

Satisfy the point (x of said binary regression equation ₁, x ₂,

Set be positioned on 2 dimensional planes after the recurrence.

2. space input method according to claim 1, wherein, before stroke began to slide, the timer of portable terminal was after static a period of time, and this state is identified as the slip stroke to begin,

Obtain the original sampling data of portable terminal through the acceleration transducer unit sensing, finish, wherein, wait for a period of time, confirm that then a said slip stroke finishes if portable terminal is static up to a slip stroke at the sliding trace of 3 dimension spaces,

If portable terminal continues to slide, then obtain the original sampling data of next stroke through the acceleration transducer unit sensing.

3. space input method according to claim 2, wherein, confirm that the relative changing value's at the inclination angle of portable terminal in 3 dimension spaces step comprises:

Confirm through acceleration transducer unit whether portable terminal is in initial benchmark and reads the screen state;

Read the screen state if portable terminal is in initial benchmark, then obtain the first primary dip of portable terminal through the geomagnetic sensor unit senses;

If the user tilts portable terminal, then obtain portable terminal and in 3 dimension spaces, work as top rake through the geomagnetic sensor unit senses;

The top rake of working as of portable terminal is compared with first primary dip, obtain the relative changing value at portable terminal inclination angle in 3 dimension spaces thus.

4. space input method according to claim 3; Wherein, When portable terminal is accomplished in 3 dimension spaces after stroke slides, in a period of time, be in staticly if sense portable terminal through acceleration transducer unit, confirm that then portable terminal is in the screen state of reading.

5. space input method according to claim 3; Wherein, After on portable terminal, showing the candidate character identify, if portable terminal whipping left, to the right or downwards, the then size and Orientation of the acceleration through acceleration transducer unit sensing portable terminal; And confirm that according to the size and Orientation of the acceleration of portable terminal portable terminal is, or downward whipping left to the right

If portable terminal is a whipping left, forward page turning show candidate literal then, if portable terminal is a whipping to the right, then page turning show candidate literal backward if portable terminal is downward whipping, is then confirmed the candidate character of the selected bright demonstration of current height of user.

6. space input method according to claim 3; Wherein, If the user uses portable terminal in 3 dimension spaces, to import Chinese words; The a period of time of pausing when then a period of time of pausing before the beginning of sliding in 3 dimension spaces and some pictures being finished is identified as some pictures respectively and begins the sign that finishes with some pictures, through acceleration transducer unit sensing portable terminal after the original sampling data of the sliding trace of 3 dimension spaces, the sliding trace of even bit is removed; Extract the stroke that constitutes Chinese words thus, then the original sampling data of the sliding trace that extracts is processed into the coordinate data of 2 dimensional planes.

7. space input method according to claim 6, wherein, only with the sliding trace that extracts be identified as successively horizontal, vertical, cast aside, press down, a kind of in five kinds of the foldings, adopt stroke input algorithm then; Perhaps discern the Chinese words of the sliding trace representative of 2 dimensional planes of handling through handwriting recognition algorithm.

8. space input method according to claim 3; Wherein, If the user uses portable terminal in 3 dimension spaces, to import english lower case; The a period of time of pausing when then a period of time of pausing before the beginning of sliding in 3 dimension spaces and some pictures being finished is identified as some pictures respectively and begins the sign that finishes with some pictures; Through the original sampling data of acceleration transducer unit sensing portable terminal, then the original sampling data of sliding trace is processed into the coordinate data of 2 dimensional planes at the sliding trace of 3 dimension spaces.

9. space input method according to claim 5, wherein, if on the X-Z plane of 3 dimension spaces, be in the rectilinear motion state when portable terminal slides in 3 dimension spaces, then said space input method also comprises:

Before 3 dimension coordinate data processing are become the coordinate data of 2 dimensional planes, obtain portable terminal travel direction angle numerical value on the X-Z plane through the geomagnetic sensor unit senses;

Obtain the shift length value of portable terminal through the acceleration transducer unit sensing;

According to portable terminal travel direction angle numerical value on the X-Z plane, in 3 dimension coordinate data, deduct the projection components numerical value of shift length value on directions X and Z direction of portable terminal, the 3 dimension coordinate data that obtain revising;

The 3 dimension coordinate data processing of revising are become the coordinate data of 2 dimensional planes.

10. the implement device of the space input method of a portable terminal comprises:

Acceleration transducer unit, sensing obtain the original sampling data of portable terminal at the sliding trace of 3 dimension spaces;

Geomagnetic sensor unit, sensing obtain the inclination angle of portable terminal in 3 dimension spaces;

The data operation processing unit, the original sampling data of the sliding trace of portable terminal in the space of degree of will speed up sensor unit sensing is expressed as 3 dimension coordinate data, and said 3 dimension coordinate data processing are become the coordinate data of 2 dimensional planes; The relative changing value at the inclination angle of portable terminal in 3 dimension spaces is confirmed at the inclination angle of portable terminal in 3 dimension spaces of base area magnetic sensor unit sensing;

Literal track identification unit is used handwriting recognition algorithm to the coordinate data of 2 dimensional planes after the processing of data operation processing unit and is carried out track recognition of characters, identifies literal candidate group;

Candidate shows/confirms input block; The coding of the literal candidate group that identifies to literal track identification unit calls the character library of corresponding language literal, on portable terminal, shows the candidate character that identifies; And relative changing value according to the inclination angle of portable terminal in 3 dimension spaces; The high bright display position that makes the candidate character on the portable terminal is move left and right correspondingly, so that the user selects

Wherein, the data operation processing unit obtains the coordinate data of said 2 dimensional planes through following operation:

It is abstract that the original sampling data of the sliding trace of 3 dimension spaces is carried out mathematical model: and z=f (x, y), (set z) is the original sample point set for x, y;

Set up bivariate regression model: y=β ₀+ β ₁x ₁+ β ₂x ₂+ μ, wherein μ representes error term;

Come estimated parameter β through least square principle ₀, β ₁, β ₂Estimator

Obtain binary regression equation: $\hat{y}={\widehat{\mathrm{\&beta;}}}_0+{\widehat{\mathrm{\&beta;}}}_1{x}_1+{\widehat{\mathrm{\&beta;}}}_2{x}_2,$

Wherein,

For dropping on the dependent variable of the mapping point on the regression plane, x behind the binary regression ₁And x ₂For dropping on the independent variable of the mapping point on the regression plane behind the binary regression,

${\widehat{\mathrm{\&beta;}}}_1=\frac{\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{y}-\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_2}y}{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1^2}\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2-{\left(\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\right)}^2},$ ${\widehat{\mathrm{\&beta;}}}_2=\frac{\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_1^2\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_2}\stackrel{\&CenterDot;}{y}-\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{y}}{\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1^2}\mathrm{\&Sigma;}{\stackrel{\&CenterDot;}{x}}_2^2-{\left(\mathrm{\&Sigma;}\stackrel{\&CenterDot;}{x_1}\stackrel{\&CenterDot;}{x_2}\right)}^2},$

${\widehat{\mathrm{\&beta;}}}_0=\stackrel{\&OverBar;}{y}-{\widehat{\mathrm{\&beta;}}}_1{\stackrel{\&OverBar;}{x}}_1-{\widehat{\mathrm{\&beta;}}}_2{\stackrel{\&OverBar;}{x}}_2,$

Wherein, ${\stackrel{\&CenterDot;}{x}}_1=x_1-{\stackrel{\&OverBar;}{x}}_1,{\stackrel{\&CenterDot;}{x}}_2=x_2-{\stackrel{\&OverBar;}{x}}_2,$ $\stackrel{\&CenterDot;}{y}=y-\stackrel{\&OverBar;}{y},{\stackrel{\&OverBar;}{x}}_1,{\stackrel{\&OverBar;}{x}}_2,\stackrel{\&OverBar;}{y}$ The expression average,

Satisfy the point (x of said binary regression equation ₁, x ₂, set y) is positioned on 2 dimensional planes after the recurrence.

11. the implement device of space input method according to claim 10, wherein, before stroke began to slide, the timer of portable terminal was after static a period of time, and acceleration transducer unit begins this state recognition for the slip stroke,

The acceleration transducer unit sensing obtains the original sampling data of portable terminal at the sliding trace of 3 dimension spaces; Finish up to a slip stroke, wherein, wait for a period of time if portable terminal is static; Then acceleration transducer unit confirms that a said slip stroke finishes

If portable terminal continues to slide, then the acceleration transducer unit sensing obtains the original sampling data of next stroke.

12. the implement device of space input method according to claim 11, wherein,

Acceleration transducer unit confirms whether portable terminal is in initial benchmark and reads the screen state,

Read the screen state if portable terminal is in initial benchmark, then the geomagnetic sensor unit senses obtains the first primary dip of portable terminal,

If the user tilts portable terminal, then the geomagnetic sensor unit senses obtains portable terminal and in 3 dimension spaces, works as top rake,

The data operation processing unit compares the top rake of working as of portable terminal with first primary dip, obtain the relative changing value at portable terminal inclination angle in 3 dimension spaces thus.

13. the implement device of space input method according to claim 12; Wherein, When portable terminal is accomplished in 3 dimension spaces after stroke slides, in a period of time, be in staticly if acceleration transducer unit senses portable terminal, confirm that then portable terminal is in the screen state of reading.

14. the implement device of space input method according to claim 12; Wherein, After on portable terminal, showing the candidate character identify, if portable terminal whipping, the then size and Orientation of the acceleration of acceleration transducer unit sensing portable terminal left, to the right or downwards; The data operation processing unit confirms that according to the size and Orientation of the acceleration of portable terminal portable terminal is, or downward whipping left to the right

If portable terminal is a whipping left; Then candidate shows/confirms input block forward page turning show candidate literal; If portable terminal is a whipping to the right; Then candidate shows/confirms input block page turning show candidate literal backward, if portable terminal is downward whipping, then candidate shows/confirm that input block confirms the candidate character of the selected bright demonstration of current height of user.

15. the implement device of space input method according to claim 12; Wherein, If the user uses portable terminal in 3 dimension spaces, to import Chinese words; The a period of time of pausing when then data operation processing unit a period of time of pausing before with the beginning of sliding in 3 dimension spaces and some pictures finish is identified as some pictures respectively and begins the sign that finishes with some pictures; At acceleration transducer unit sensing portable terminal after the original sampling data of the sliding trace of 3 dimension spaces; The data operation processing unit is removed the sliding trace of even bit, extracts the stroke that constitutes Chinese words thus, and the data operation processing unit is processed into the original sampling data of the sliding trace that extracts the coordinate data of 2 dimensional planes then.

16. the implement device of space input method according to claim 15, its Chinese words track identification unit only with the sliding trace that extracts be identified as successively horizontal, vertical, cast aside, press down, a kind of in five kinds of the foldings, adopt stroke input algorithm then; Perhaps literal track identification unit is through the Chinese words of the sliding trace representative of 2 dimensional planes of handwriting recognition algorithm identification processing.

17. the implement device of space input method according to claim 12; Wherein, If the user uses portable terminal in 3 dimension spaces, to import english lower case; The a period of time of pausing when then data operation processing unit a period of time of pausing before with the beginning of sliding in 3 dimension spaces and some pictures finish is identified as some pictures respectively and begins the sign that finishes with some pictures; Acceleration transducer unit sensing portable terminal is at the original sampling data of the sliding trace of 3 dimension spaces, and the data operation processing unit is processed into the original sampling data of sliding trace the coordinate data of 2 dimensional planes then.

18. the implement device of space input method according to claim 14; Wherein, When if portable terminal slides in 3 dimension spaces; On the X-Z plane of 3 dimension spaces, be in the rectilinear motion state, then before the data operation processing unit became the coordinate data of 2 dimensional planes with 3 dimension coordinate data processing, the geomagnetic sensor unit senses obtained portable terminal travel direction angle numerical value on the X-Z plane; The acceleration transducer unit sensing obtains the shift length value of portable terminal; The data operation processing unit deducts the projection components numerical value of shift length value on directions X and Z direction of portable terminal according to portable terminal at travel direction angle numerical value on the X-Z plane in 3 dimension coordinate data, the 3 dimension coordinate data that obtain revising, and the 3 dimension coordinate data processing that will revise of data operation processing unit become the coordinate data of 2 dimensional planes then.

19. the implement device of space input method according to claim 10 also comprises: data storage cell, the raw data of storage acceleration transducer unit and geomagnetic sensor unit senses is to be called by the data operation processing unit.

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