CN105468173B - Realize the electronic equipment and method of the automatic page turning of off screen handwriting input - Google Patents
Realize the electronic equipment and method of the automatic page turning of off screen handwriting input Download PDFInfo
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- CN105468173B CN105468173B CN201410464906.9A CN201410464906A CN105468173B CN 105468173 B CN105468173 B CN 105468173B CN 201410464906 A CN201410464906 A CN 201410464906A CN 105468173 B CN105468173 B CN 105468173B
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Abstract
The invention proposes the electronic equipments and method of a kind of automatic page turning for realizing off screen handwriting input.Electronic equipment includes the display device with input page, and input page is in the first coordinate system, and hand input device includes signal projector and moves in the second coordinate system, and the second coordinate system is different from the first coordinate system.Electronic equipment includes: receiving unit, and the signal of signal projector transmitting is received with the first prefixed time interval；Coordinate value determination unit determines hand input device coordinate value in the second coordinate system according to the signal that received signal projector emits and is converted into the coordinate value of corresponding first coordinate system；Coordinate value storage unit stores the coordinate value of the first coordinate system；Display unit shows the corresponding track of coordinate value of the first stored coordinate system on input page；And control unit empties the coordinate value that coordinate value storage unit is stored and regenerates the new page with the first coordinate system when a predetermined condition is satisfied.
Description
Technical field
The present invention relates to a kind of electronic equipment more particularly to a kind of electronics for the automatic page turning for realizing off screen handwriting input to set
Standby and method.
Background technique
While the mobile devices such as tablet computer, smart phone, personal digital assistant are obtained and are widely applied, to such shifting
The character input modes of dynamic equipment also become diversification, however the input of traditional sense upper keyboard, touch screen hand-writing input hardly possible
To meet the needs of user's daily use.Especially since the screen size of mobile device is usually smaller, it is hand-written accurate to touch
The reasons such as low, screen is smooth are spent, the user experience of touch screen hand-writing input is all reduced.Moreover, in practical applications, movement is set
The standby tool often as blotter, exchange, at this moment user is possibly can not be hand-written defeated directly on the screen of the mobile device
Enter.
The demand of off screen handwriting input has been expedited the emergence of as a result,.In the prior art, sound wave or ultrasonic wave location technology are applied
, it can be achieved that the coordinate of off screen writing pencil, touch point is sensed and detected in mobile device.Chinese patent application
No. 00133388.7 describes a kind of ultrasonic writing input detector for hand, is equipped with ultrasonic wave in the case surface of mobile device
Receiver is equipped with ultrasonic transmitter on writing pencil, by detect ultrasonic wave that the ultrasonic transmitter issues
Transmission time or transmission time difference in air position writing pencil position, to realize off screen handwriting input.This off screen hand
It is extensive to write input technology application field, such as on classroom, student records the note on paper, and passes through the off screen writing technology
By the real-time typing of note contents into tablet computer or smart mobile phone.
However, during off screen handwriting input, if user replaces paper when continuing to write on new one page, mobile device
And its application software can not automatic identification user replaced paper.Therefore, user must be skipped using manual mode, such as by connecing
It receives the button on device or presses the newly-built page button on software interface, just can guarantee that the record content of new one page will not be coated in this way
It covers in the content of page up record, thus user must interrupt hand-written process when skipping.In addition, in the hand-written process of off screen
In, user often closes screen or is displayed in full screen other contents on the screen, as video content, webpage, video calling, with reference to religion
Material etc., thus operation button can not be provided.Therefore, it is necessary to one kind to realize automatic turning in the case where not interrupting the hand-written process of off screen
The method and apparatus of page, to promote user experience.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide it is a kind of can be realized off screen handwriting input from
The electronic equipment and method of dynamic page turning.
According to an aspect of the present invention, a kind of electronic equipment is provided, comprising: display device, on said display means
Input page is shown, the input page is in the first coordinate system, and the electronic equipment is connect with hand input device, institute
Stating hand input device includes signal projector, and the hand input device moves in the second coordinate system, second coordinate
It is different from first coordinate system, wherein the electronic equipment includes: receiving unit, configuration comes with the first prefixed time interval
Receive the signal of the signal projector transmitting；Coordinate value determination unit, configuration come according to the received signal projector
The signal of transmitting determines coordinate value of the hand input device in second coordinate system and is converted into corresponding institute
State the coordinate value of the first coordinate system；Coordinate value storage unit configures to store the coordinate value of first coordinate system；Display is single
Member configures the corresponding track of coordinate value to show first coordinate system stored on the input page；And control
Unit processed, configuration when a predetermined condition is satisfied, to empty the coordinate value that the coordinate value storage unit is stored and regenerate
New page with first coordinate system.
According to another aspect of the present invention, a kind of method of automatic page turning for realizing off screen handwriting input, the side are provided
Method is applied to electronic equipment, and the electronic equipment includes display device, shows input page on said display means, described
Input page is in the first coordinate system, and the electronic equipment is connect with hand input device, and the hand input device includes
Signal projector, the hand input device move in the second coordinate system, second coordinate system and first coordinate system
It is different, which comprises signal receiving step receives the letter of the signal projector transmitting with the first prefixed time interval
Number；Coordinate value switch process determines that the hand input device exists according to the signal of the received signal projector transmitting
Coordinate value in second coordinate system and the coordinate value for being converted into corresponding first coordinate system；Coordinate value storage step
Suddenly, the coordinate value of first coordinate system is stored；Show Trace step, display is stored on the input page described the
The corresponding track of the coordinate value of one coordinate system；And new page generation step empties the seat when judgement meets predetermined condition
Coordinate value that scale value storage unit is stored simultaneously regenerates the new page with first coordinate system.
It can be seen that according to the technique and scheme of the present invention, during off screen handwriting input, when user sets up another one page input
When, the page turning movement of user can be automatically identified, is skipped without being operated manually, because without interrupting the hand-written of user
User experience is effectively promoted in input process.
Detailed description of the invention
Above and other purpose of the invention, advantages and features can be more completely understood in conjunction with the accompanying drawings, in the accompanying drawings:
Fig. 1 is the hardware configuration for showing the system of first embodiment according to the present invention；
Fig. 2 is the functional block diagram for showing the electronic equipment of first embodiment according to the present invention；
Fig. 3 A and Fig. 3 B diagrammatically illustrate the input page of the electronic equipment of first embodiment according to the present invention；
Fig. 4 diagrammatically illustrates the input page of the electronic equipment of third embodiment according to the present invention；
Fig. 5 diagrammatically illustrates the functional block diagram of direction-determining unit；
Fig. 6 diagrammatically illustrates direction-determining unit and determines that hand-written direction is lateral exemplary diagram；And
Fig. 7 is the stream for showing the method for the automatic page turning of realization off screen handwriting input of fourth embodiment according to the present invention
Cheng Tu.
Attached drawing is intended to describe exemplary embodiment of the present invention, and is not necessarily to be construed as limiting the scope of the invention.It removes
It non-clearly points out, otherwise attached drawing is not considered as drawn to scale.
Specific embodiment
Hereinafter, it will be described in detail with reference to the accompanying drawings the preferred embodiment of the present invention.In the present description and drawings, it will adopt
Substantially the same element and function is presented with like reference characters, and the repeatability of these elements and function is said by omitting
It is bright.In addition, for clarity and brevity, it is convenient to omit for the explanation of function and construction known in the art.
With reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Fig. 1 is the hardware configuration for showing the system of first embodiment according to the present invention.As shown in fig. 1, the system
Including electronic equipment 10, writing pencil 20 and paper 30.Electronic equipment 10 can include: infrared receiver 11, the first ultrasonic wave connect
Device 12a, the second ultrasonic receiver 12b, input page 13 and display screen 14 are received, wherein input page 13 has the first coordinate
It is (x, y), infrared receiver 11, the first ultrasonic receiver 12a and the second ultrasonic receiver 12b are with identical frequency
Receive signal.Writing pencil 20 can include: RF transmitter 21 and ultrasonic transmitter 22 are both located at the pen of writing pencil 20
At point.Paper 30 has the second coordinate system (x ', y ').When user is write on paper 30 using writing pencil 20, pen tip is under pressure
Hair RF transmitter 21 is triggered simultaneously afterwards and ultrasonic transmitter 22 issues infrared ray and ultrasonic wave respectively.
It is well known that the spread speed of infrared ray is far longer than the spread speed of sound in air, so infrared ray connects
The time that receipts device 11 receives infrared ray will much receive the time of ultrasonic wave earlier than ultrasonic receiver 12a, 12b.Thus
The infrared ray aerial propagation time can be ignored, so that will be received as fiducial time the time of infrared ray.Due to super
The aerial spread speed of sound wave be it is known, by calculate two ultrasonic receivers 12a and 12b receive ultrasonic wave
Time respectively with the time difference of fiducial time, can obtain the position of pen tip.It can refer to following algorithm:
It is assumed that: the coordinate value of known two ultrasonic receivers 12a and 12b in the second coordinate system be respectively P1 (x1 ',
Y1 ') and P2 (x2 ', y2 ')；The known aerial spread speed of ultrasonic wave is V；First ultrasonic receiver 12a receives super
The time of sound wave and the time difference of fiducial time are calculated as t1；Second ultrasonic receiver 12b receives the time of ultrasonic wave
T2 is calculated as with the time difference of fiducial time；The coordinate value of pen tip is P3 (x ', y ').It can obtain with Pythagorean theorem with lower section
Journey group (1):
Above-mentioned binary quadratic equation group is solved, x ', y ' can be obtained.
In addition, the first coordinate system and the second coordinate system can be generally aligned in the same plane or positioned at Different Planes, such as when
When user is write on the table using writing pencil, electronic equipment and vertical are placed.Correspondingly, input page 13 and paper 30
Size can be equal, can also be proportional.As a result, can by the second coordinate system calculated coordinate value (x ',
Y ') be converted to coordinate value (x, y) in the first coordinate system.In addition, infrared receiver 11 can be by third ultrasonic receiver
Substitution, any one of as described three ultrasonic receivers are used equally for providing fiducial time, can using Pythagorean theorem
It obtains the similar equation group with above-mentioned equation group (1), the coordinate value of pen tip can be obtained by solving.
In addition, the quantity of infrared receiver and ultrasonic receiver and position can be according to need in electronic equipment 10
Depending on wanting.In addition, infrared receiver and ultrasonic receiver can also be provided at the outside of electronic equipment 10, pass through wired or nothing
Line mode is communicated with electronic equipment 10.In addition, when manufacturing electronic equipment 10 can also will writing pencil 20 matched with its into
Row frequency locking, i.e. ultrasonic transmitter 22, the frequency of RF transmitter 21 and ultrasonic receiver 12a and 12b, infrared receiver
The frequency of device 11 is identical.
Fig. 2 is the functional block diagram for showing the electronic equipment of first embodiment according to the present invention.As shown in Figure 2, electronics
Equipment 10 includes following functional unit: receiving unit 31, for preset frequency reception infrared signal and ultrasonic signal；
Coordinate value determination unit 32, for determining writing pencil according to 31 received signal of receiving unit and by above-mentioned equation group (1)
20 pen tip coordinate value (x ', y ') in the second coordinate system and be converted into corresponding first coordinate system coordinate value (x,
y)；Coordinate value storage unit 33, the coordinate value (x, y) for the first coordinate system determined by stored coordinate values determination unit 32；
Display unit 34, for composed by displaing coordinate value storage unit 33 is stored on input page 13 coordinate value (x, y)
Track, wherein the track can be stroke or picture；And control unit 35, for being stored when coordinate value storage unit 33
Coordinate value (x, y) when falling into the specific region in input page 13, empty the coordinate that coordinate value storage unit 33 is stored
It is worth and regenerates the new input page 13 with the first coordinate system, that is, control unit 35 is by the coordinate in the first coordinate system
Value falls into specific region as predetermined condition.Wherein, coordinate value determination unit 32, control unit 35 can be soft by being controlled by CPU
Part module is formed；Coordinate value storage unit 33 can the computer-readable memory as such as RAM formed.
Fig. 3 A and Fig. 3 B diagrammatically illustrate the input page 13 of the electronic equipment of first embodiment according to the present invention.Such as
Shown in Fig. 3 A, user records along sequence from left to right, from top to bottom, in this case, 13 bottom of input page
Region A is arranged to region of skipping, i.e., when the coordinate points of corresponding first coordinate system of the pen tip of user fall into region A, control
Unit 35 empties the coordinate value that coordinate value storage unit 33 is stored and regenerates the new incoming page with the first coordinate system
Face 13, so that user continues to input.The size of region A can be configured by user in advance.Region A is preferably rectangle.However
The present invention is not limited thereto, and the shape of region A can be the foreseeable any shape of those skilled in the art.Such as institute in Fig. 3 B
Show, user records along sequence from top to bottom, from right to left, and in this case, the region B in 13 left side of input page is set
It is set to region of skipping.The parameters such as shape, the size of region B are similar to region A, and which is not described herein again.
It second embodiment of the invention will be described in detail below.The electronic equipment of the second embodiment of the present invention
Hardware configuration and functional unit (referring to Fig. 1 and Fig. 2) phase of hardware configuration and functional unit and first embodiment described above
Together, therefore it is omitted here their description.
In a second embodiment, the electronic equipment 10 of user through the invention has input a few row words on input page 13,
Wherein the first character from left to right of the first row is Chinese character " one ".At this point, user's preparation sets up another one page and continues to write, and in the first row
First character input Chinese character " work ".When user writes the first stroke of " work " word, the stroke is Chong Die with Chinese character " one ", that is,
It says, the whole of the first stroke of the whole coordinate values and Chinese character " work " of the Chinese character " one " stored in coordinate value storage unit 33
Coordinate value is identical.At this point, the overlap operation of the person's handwriting is identified the page-turning instruction as user by control unit 35, and clear
Then the coordinate value that empty coordinate value storage unit 33 is stored regenerates the new input page 13 with the first coordinate system.
That is, control unit 35 is using the overlapping of person's handwriting as predetermined condition.
In order to carry out accurate judgement to page-turning instruction of the user in writing process, can be preset in control unit 35
Pre-set threshold time section T, and compare using current time point as each of the first coordinate system in the pre-set threshold time section T of terminal
Whether a coordinate value is each with the first coordinate system in some described pre-set threshold time section T before current time point
Coordinate value is identical.Pre-set threshold time section T cannot be too short, in order to avoid the stroke intersection in normal writing process is mistaken for user's
Page-turning instruction, and period threshold value T cannot be too long, in order to avoid leak through the judgement to stroke overlapping.Period, threshold value T was preferably
Between 0.5 second to 1 second.In addition, pre-set threshold time section T can be configured by user in advance, can also be set by electronics of the invention
It is standby to be determined according to the writing style of user.
Fig. 4 diagrammatically illustrates the input page 13 of the electronic equipment of third embodiment according to the present invention.Of the invention
The hardware configuration and function of the hardware configuration and functional unit of the electronic equipment of 3rd embodiment and first embodiment described above
Energy property component (referring to Fig. 1 and Fig. 2) is identical, therefore is omitted here their description.
As shown in Figure 4, the electronic equipment of user through the invention is on input page 13 by from left to right, from top to bottom
Sequentially inputted a few row words.When user's progress page turn over operation, i.e., writing pencil 20 is moved to the upper left corner of paper 30, is existed to realize
Continue to input in the top of new input page 13.At this point, identification is widely varied as use in this person's handwriting by control unit 35
The page-turning instruction at family, and the coordinate value that coordinate value storage unit 33 is stored is emptied, it then regenerates with the first coordinate system
New input page 13.That is, being widely varied person's handwriting as predetermined condition of control unit 35.
For this purpose, distance threshold L, and 35 coordinates computed value storage unit of control unit has can be preset in control unit 35
The corresponding coordinate points of the coordinate value that 33 current points in time are stored (the D point in Fig. 4) are stored with adjacent previous time point
The corresponding coordinate points of coordinate value (the E point in Fig. 4) distance d between the two, and distance d and distance threshold L are compared
Compared with as d >=L, control unit 35 identifies the page-turning instruction of user, and carries out corresponding operating.
Distance threshold L cannot be too short, in order to avoid the variation of person's handwriting in individual Chinese character or letter is mistaken for page-turning instruction, and
Distance threshold L cannot be too long, in order to avoid leak through the judgement to page turn over operation.Distance threshold L is preferably the diagonal line of input page 13
The half of length.In addition, distance threshold L can be configured by user in advance, it can also be by electronic equipment of the invention according to input
The size of the page 13 is configured.
In addition, control unit 35 of the invention calculate apart from when, coordinate points corresponding with current point in time are compared
Object be not limited in adjacent corresponding coordinate points of previous time point, the object compared can be with current time point
For any one time point corresponding coordinate points (such as F point in Fig. 4) in the pre-set threshold time section t of terminal.D point and F
The distance between point is d ', and as d ' >=L, control unit 35 identifies the page-turning instruction of user, and carries out corresponding operating.Its
In, threshold time period t is unsuitable too long, in case control unit 35 is judged by accident or fails to judge.Threshold time period t is preferably 1 second to 2 seconds.This
Outside, threshold time period t can be configured by user in advance, can also by electronic equipment of the invention according to the writing speed of user come
It determines.
In addition, the electronic equipment 10 of third embodiment according to the present invention may also include direction-determining unit 36.Direction is true
Order member 36 determines the hand-written direction of user according to the coordinate value stored in coordinate value storage unit 33.Fig. 5 schematically shows
The functional block diagram of direction-determining unit 36 is gone out.Specifically, direction-determining unit 36 includes coordinate extraction module 361 and compares
Module 362, wherein coordinate extraction module 361 extracts the coordinate value of continuous predetermined quantity from coordinate value storage unit 33.
Fig. 6 diagrammatically illustrates direction-determining unit 36 and determines that hand-written direction is lateral exemplary diagram.Referring to Fig. 6, coordinate
Extraction module 361 extracts the coordinate value that continuous 4 time points are inputted, i.e. G (x1, y1), H from coordinate value storage unit 33
(x2, y2), I (x3, y3) and J (x4, y4), comparison module 362 compare the ordinate of three pairs of adjacent coordi nates of 4 coordinate values
The absolute value of the difference of value, it may be assumed that | y1-y2 |, | y2-y3 | and | y3-y4 |.If | y1-y2 |, | y2-y3 | and | y3-y4 | it is respectively less than
Distance threshold L ', and x2 > x1, x3 > x2, x4 > x3, then the hand-written direction is laterally.It is also possible to use similar side
Method judges whether hand-written direction is longitudinal, therefore which is not described herein again.
Fig. 4 is returned to, after electronic equipment determines that the hand-written direction of user is transverse direction, control unit 35 can will be current
Coordinate value (the corresponding diagram 4 that the coordinate value (the D point in corresponding diagram 4) and adjacent previous time point that time point is stored are stored
In E point) distance h in the positive vertical direction (i.e.+y-axis direction) in the hand-written direction replaces distance d to come and distance threshold L
It is compared, as h >=L, control unit 35 identifies the page-turning instruction of user, and carries out corresponding operating.
Three embodiments of electronic equipment according to the present invention illustrated above.In these embodiments, display unit 34
It is individually communicated with coordinate value storage unit 33 respectively with control unit 35.However the present invention is not limited thereto.Display unit
34 can not directly receive the coordinate value of the first coordinate system from coordinate value storage unit 33, but receive first from control unit 35
The coordinate value of coordinate system.In this case, control unit 35 receives the coordinate value of the first coordinate system from coordinate value storage unit 33,
And judge whether the coordinate value meets the predetermined condition of above-mentioned corresponding embodiment, if meeting the predetermined item of corresponding embodiment
Part, then control unit 35 empties the coordinate value that coordinate value storage unit 33 is stored, and then regenerates with the first coordinate system
New input page 13；Conversely, then control unit 35 by the coordinate value of received first coordinate system be sent to display unit
34 are shown.
In addition, electronic equipment 10 can also include selecting unit, for depending on the user's operation in type mode and drawing
It is selected between mode.For example, selecting unit makes control unit 35 not work, Yong Huke when user selects Graphics Mode
To paint on entire input page 13, thus electronic equipment is without page turn over operation.When user selects type mode,
Selecting unit makes control unit 35 work, to execute page turn over operation.
Next, by the automatic page turning referring to Fig. 7 to the realization off screen handwriting input of fourth embodiment according to the present invention
Method be described in detail.Here, by the hardware configuration of electronic equipment 10, writing pencil 20 and paper 30 referring to fig. 1
And each functional module of electronic equipment 10 shown in Fig. 2 is illustrated the method.
As shown in Figure 7, in step S101, the letter emitted by receiver with identical frequency reception signal projector
Number.
Specifically, electronic equipment 10 is connect by infrared receiver 11, the first ultrasonic receiver 12a, the second ultrasonic wave
Receive the ultrasonic wave that device 12b receives the infrared ray issued from RF transmitter 21 and issues from ultrasonic transmitter 22.
In step S102, writing pencil 20 is determined in the second coordinate system according to the signal that received signal projector emits
Coordinate value and the coordinate value is converted to the coordinate value of corresponding first coordinate system.
Specifically, using the time of 11 receiving infrared-ray of infrared receiver as fiducial time, by calculating two ultrasounds
Wave receiver 12a and 12b receive time of ultrasonic wave respectively with the time difference of the fiducial time, and based on ultrasonic wave in air
In known spread speed, using equation group (1) described above, the pen tip that can calculate writing pencil 20 is located at the second coordinate
Coordinate value in system.It is equal sized or proportional due to the first coordinate system and the second coordinate system, so can by conversion
Obtain the coordinate value in the first coordinate system corresponding to pen tip.
In step S103, the coordinate value of storing step S102 the first coordinate system obtained.
Specifically, in step s 103, coordinate value storage unit 33 receives the first seat from coordinate value determination unit 32
The coordinate value of system is marked, and is stored in sequence in computer-readable memory as such as RAM.
In step S104, the coordinate value for the first coordinate system that step S103 is stored is shown in order on input page 13
Corresponding track.
Specifically, display unit 34 reads the first coordinate system wherein stored from coordinate value storage unit 33 in order
Then coordinate value in order shows the coordinate points in read-out corresponding first coordinate system of coordinate value in the display page 13
On.The coordinate points form track as such as stroke or picture on the display page 13.
In step S105, judge whether the coordinate value of the first coordinate system stored in step s 103 meets predetermined item
Part empties the coordinate value of the first stored coordinate system and regenerates with the first coordinate system when a predetermined condition is satisfied
New page.
Specifically, control unit 35 reads the first coordinate system wherein stored from coordinate value storage unit 33 in order
Then coordinate value judges the coordinate value.Wherein, the coordinate value is carried out judging can be to judge the first coordinate system
Coordinate value whether fall into the presumptive area in input page 13, that is, the predetermined condition be the first coordinate system coordinate value fall
Enter presumptive area.If the coordinate value is fallen into the presumptive area, control unit 35 judges page-turning instruction, and carries out
It empties the operation of the coordinate value of the first stored coordinate system and regenerates the operation of the new page with the first coordinate system.
The presumptive area can be the region A of 13 bottom of input page as shown in fig. 3, be also possible to as shown in Figure 3B
The region B in 13 left side of input page.However the presumptive area is not limited to this.The positions and dimensions of the presumptive area can be with
It is adjusted, or is selected by users according to the writing style of user.
In addition, carrying out judging can be judging using current time point as the threshold time period of terminal to the coordinate value
Each coordinate value of first coordinate system stored in T in chronological order whether respectively with the current time point before
Particular point in time be terminal the pre-set threshold time section T in store first coordinate system each coordinate value phase
Together.That is, the predetermined condition is each coordinate points institute in the pre-set threshold time section T using current point in time as terminal
The track of formation is identical as the track in some threshold time period T before.If identical, control unit 35 judges that page turning refers to
It enables, and is emptied the operation of the coordinate value of the first stored coordinate system and regenerate the new page with the first coordinate system
The operation in face.
In addition, carrying out judging can be judging using current time point as the pre-set threshold time of terminal to the coordinate value
What the corresponding coordinate points of any one coordinate value of first coordinate system stored in section t and the current time point stored
Whether the distance between corresponding coordinate points of coordinate value of first coordinate system are greater than distance threshold L.That is, to control
Unit 35 judges the amplitude of variation of the track on input page 13.If corresponding coordinate points of current time point
(such as D point in Fig. 4) is corresponding as any one of the pre-set threshold time section t of terminal time point with using current time point
Coordinate points (such as F point in Fig. 4) compare, mobile distance be greater than distance threshold L, then control unit 35 judges that page turning refers to
It enables and is emptied the operation of the coordinate value of the first stored coordinate system and regenerate the new page with the first coordinate system
The operation in face.That is, the predetermined condition be corresponding coordinate points of current time point with using current time point as the pre- of terminal
If the distance between any one of threshold time period t time point is greater than pre-determined distance threshold value.
In addition, further including hand-written direction determining step in judging the step of whether above-mentioned distance is greater than distance threshold L.Tool
The coordinate value that body, first direction-determining unit 36 receive predetermined quantity from coordinate value storage unit 33 in order, such as in Fig. 6
G (x1, y1), H (x2, y2), I (x3, y3) and J (x4, y4)；Then direction-determining unit compares in G point, H point, I point and J point
The absolute value of the difference of the ordinate value of each pair of adjacent coordi nate, i.e., if the difference of the ordinate value of each pair of adjacent coordi nate it is absolute
Value is respectively less than the second pre-determined distance threshold value L ', and G point, H point, I point and J point abscissa are sequentially increased, i.e. x2 > x1, x3 >
When x2, x4 > x3, then hand-written direction is determined as transverse direction by direction-determining unit 36.By similar methods, it can determine whether hand-written side
To for longitudinal or other directions.
In addition, judging whether above-mentioned distance is greater than after determining hand-written direction by hand-written direction determining step
In the step of distance threshold L, the distance can be determined as to the hand-written direction determined by the direction determining step just
Distance in vertical direction.
In addition, the method for the automatic page turning of the realization off screen handwriting input of embodiment according to the present invention step 101 it
Before further include mode selecting step, selected between type mode and Graphics Mode depending on the user's operation.It is selected in mode
It selects in step, when user selects Graphics Mode, only executes step S101 to S104, do not execute step S105, that is, control unit
35 do not work, and user can paint on entire input page 13, thus electronic equipment is without page turn over operation.Work as user
When selecting type mode, step S101 to S105 is executed.
It will be appreciated by those of skill in the art that the embodiments described herein can be soft with electronic hardware, computer
The combination of part or the two is realized, in order to clearly illustrate the interchangeability of hardware and software, has been pressed in the above description
Each exemplary composition and step are generally described according to function.These functions are implemented in hardware or software actually,
Specific application and design constraint depending on technical solution.Those skilled in the art can make each specific application
Differently realize described function, but such implementation should not be considered as beyond the scope of the present invention.
Those skilled in the art should understand that: the above embodiments are only used to illustrate the technical solution of the present invention., and
It is non-that it is limited；Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can
To modify the technical solutions described in the foregoing embodiments, or some or all of the technical features are carried out etc.
With replacement；And these are modified or replaceed, the range of it does not separate the essence of the corresponding technical solution claims of the present invention.
Claims (14)
- Include display device 1. a kind of electronic equipment, show input page on said display means, at the input page In the first coordinate system, the electronic equipment is connect with hand input device, and the hand input device includes signal projector, The hand input device moves in the second coordinate system, and second coordinate system is different from first coordinate system, wherein institute Stating electronic equipment includes:Receiving unit configures to receive the signal of the signal projector transmitting with the first prefixed time interval；Coordinate value determination unit configures to determine the handwriting input according to the signal of the received signal projector transmitting Coordinate value of the device in second coordinate system and the coordinate value for being converted into corresponding first coordinate system；Coordinate value storage unit configures to store the coordinate value of first coordinate system；Display unit configures the corresponding rail of coordinate value to show first coordinate system stored on the input page Mark；AndControl unit configures to empty the coordinate value storage unit institute when meeting the predetermined condition for not interrupting off screen writing The coordinate value of storage simultaneously regenerates the new page with first coordinate system.
- 2. electronic equipment according to claim 1, whereinWhen the coordinate value of first coordinate system falls into the presumptive area in the input page, described control unit is judged Meet the predetermined condition for not interrupting off screen writing.
- 3. electronic equipment according to claim 1, whereinWhen each coordinate of first coordinate system stored in the first preset time period using current time point as terminal Value is in chronological order respectively and using the particular point in time before the current time point as first preset time of terminal When each coordinate value of first coordinate system stored in section is identical, described control unit is judged to meet the not middle dialysis Shield the predetermined condition write.
- 4. electronic equipment according to claim 1, whereinWhen any one seat of first coordinate system stored in the second preset time period using current time point as terminal The corresponding coordinate points of scale value coordinate points corresponding with the coordinate value of first coordinate system of the current time point storage it Between distance when being greater than the first pre-determined distance threshold value, then described control unit, which is judged to meet, described does not interrupt the pre- of off screen writing Fixed condition.
- 5. electronic equipment according to claim 4, further includes:Direction-determining unit configures to determine hand-written direction according to the coordinate value of first coordinate system stored, whereinThe distance be on the positive vertical direction in identified hand-written direction at a distance from.
- 6. electronic equipment according to claim 5, wherein the direction-determining unit includes:Coordinate extraction module configures to extract the coordinate value of continuous predetermined quantity from the coordinate value storage unit in order,Comparison module, configuration carry out the difference of the abscissa value of each pair of adjacent coordi nate in the coordinate value of more extracted predetermined quantity Absolute value or ordinate value absolute value of the difference, whereinIf the absolute value of the difference of the abscissa value of each pair of adjacent coordi nate is respectively less than the second pre-determined distance threshold value, described hand-written Direction is longitudinal；If the absolute value of the difference of the ordinate value of each pair of adjacent coordi nate is respectively less than the second pre-determined distance threshold Value, then the hand-written direction is laterally.
- 7. electronic equipment according to claim 1, further includes:Selecting unit configures to be selected between type mode and Graphics Mode depending on the user's operation, whereinWhen selecting the Graphics Mode, described control unit does not work.
- 8. a kind of method for the automatic page turning for realizing off screen handwriting input, the method is applied to electronic equipment, and the electronics is set For comprising display device, input page is shown on said display means, the input page is in the first coordinate system, institute It states electronic equipment to connect with hand input device, the hand input device includes signal projector, the hand input device It moves in the second coordinate system, second coordinate system is different from first coordinate system, which comprisesSignal receiving step receives the signal of the signal projector transmitting with the first prefixed time interval；Coordinate value switch process determines that the hand input device exists according to the signal of the received signal projector transmitting Coordinate value in second coordinate system and the coordinate value for being converted into corresponding first coordinate system；Coordinate value storing step stores the coordinate value of first coordinate system；It shows Trace step, the corresponding rail of coordinate value of first coordinate system stored is shown on the input page Mark；AndNew page generation step empties stored coordinate value simultaneously when judgement meets the predetermined condition for not interrupting off screen writing Regenerate the new page with first coordinate system.
- 9. according to the method described in claim 8, whereinWhen the coordinate value of first coordinate system falls into the presumptive area in the input page, the new page generation step Judgement meets the predetermined condition for not interrupting off screen writing.
- 10. according to the method described in claim 8, whereinWhen each seat of first coordinate system of the storage in the first preset time period using current time point as terminal Scale value in chronological order respectively with using the particular point in time before the current time point as terminal described first it is default when Between each coordinate value of first coordinate system for storing in section it is identical when, the new page generation step judgement meet it is described not Interrupt the predetermined condition that off screen is write.
- 11. according to the method described in claim 8, whereinWhen any one seat of first coordinate system stored in the second preset time period using current time point as terminal The corresponding coordinate points of scale value coordinate points corresponding with the coordinate value of first coordinate system of the current time point storage it Between distance when being greater than the first pre-determined distance threshold value, new page generation step judgement, which meets, described does not interrupt off screen writing Predetermined condition.
- 12. according to the method for claim 11, further includes:Hand-written direction determining step determines hand-written direction according to the coordinate value of first coordinate system stored, whereinThe distance be on the positive vertical direction in identified hand-written direction at a distance from.
- 13. according to the method for claim 12, wherein the hand-written direction determining step includes:The coordinate value of continuous predetermined quantity is extracted from the coordinate value of first coordinate system stored in order；AndCompare the absolute value of the difference or ordinate value of the abscissa value of each pair of adjacent coordi nate in the coordinate value of the predetermined quantity Absolute value of the difference, whereinIf the absolute value of the difference of the abscissa value of each pair of adjacent coordi nate is respectively less than the second pre-determined distance threshold value, described hand-written Direction is longitudinal；If the absolute value of the difference of the ordinate value of each pair of adjacent coordi nate is respectively less than the second pre-determined distance threshold Value, then the hand-written direction is laterally.
- 14. according to the method described in claim 8, further include:Mode selecting step is selected between type mode and Graphics Mode depending on the user's operation, whereinWhen selecting the Graphics Mode, new page generation step is not executed.
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| WO2019153172A1 (en) * | 2018-02-08 | 2019-08-15 | 深圳市柔宇科技有限公司 | Handwriting input apparatus and page-turning control method |
| WO2019178866A1 (en) * | 2018-03-23 | 2019-09-26 | 深圳市柔宇科技有限公司 | Page turning method and apparatus for terminal, and pen tablet |
| CN112540683B (en) * | 2020-12-08 | 2022-09-02 | 维沃移动通信有限公司 | Intelligent ring, handwritten character recognition method and electronic equipment |
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