CN104423869A - Text erasing method and device - Google Patents
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- CN104423869A CN104423869A CN201310408151.6A CN201310408151A CN104423869A CN 104423869 A CN104423869 A CN 104423869A CN 201310408151 A CN201310408151 A CN 201310408151A CN 104423869 A CN104423869 A CN 104423869A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04842—Selection of displayed objects or displayed text elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/166—Editing, e.g. inserting or deleting
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Abstract
The invention discloses a text erasing method and a device. The method comprises the following steps of acquiring a first touch point on a touch screen, wherein the first touch point is a position where a cursor is located; under the situation that the touch screen is continuously touched at the first touch point, acquiring a second touch point, and confirming to enter into a text erasing mode according to the first touch point and the second touch point; under the text erasing mode, acquiring a sliding track taking the position where the first touch point is located as an initial position, and confirming a text to be erased and erasing according to the sliding track. According to the technical scheme provided by the invention, a user can erase the text through a multi-point touch way, the text editing efficiency of the user is improved, and meanwhile, the user experience is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of text method for deleting and device.
Background technology
At present, text edit software in correlation technique is when carrying out text erasing, the mode of usual employing first cursor is chosen particular location to be erased, and then click the delete button that physical keyboard or dummy keyboard are preset, often click once, cursor and rollback one lattice, and then an erasing character.But, aforesaid way when run into display screen has large section character need to delete, namely there is plurality of positions and need amendment, such as: user opens text edit software and edited one large section of word on IPAD, but follow-up discovery needs amendment comprehensively, now namely there will be the situation that touching medium moves around on the touchscreen, for operator, can feel the very loaded down with trivial details and inefficiency of its operation, Consumer's Experience is poor.
As can be seen here, when the mobile terminal in correlation technique carries out text erasing under text editing state, comparatively loaded down with trivial details, the inefficiency of its operation, Consumer's Experience is poor.
Summary of the invention
The invention provides a kind of text method for deleting and device, when carrying out text erasing with the mobile terminal at least solved in correlation technique under text editing state, comparatively loaded down with trivial details, the inefficiency of its operation, the problem that Consumer's Experience is poor.
According to an aspect of the present invention, a kind of text method for deleting is provided.
Text method for deleting of the present invention comprises: obtain the first touch point on the touchscreen, and wherein, the first touch point is cursor position; When the first touch point continues to keep touching touch-screen, obtain the second touch point, and determine to enter text erasing mode according to the first touch point and the second touch point; The sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determine that text to be erased is wiped according to sliding trace.
According to a further aspect in the invention, a kind of text erasing apparatus is provided.
Text erasing apparatus of the present invention comprises: acquisition module, and for obtaining the first touch point on the touchscreen, wherein, the first touch point is cursor position; Determination module, for continuing at the first touch point to keep touching touch-screen, obtaining the second touch point, and determining to enter text erasing mode according to the first touch point and the second touch point; According to sliding trace, erasing module, for the sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determines that text to be erased is wiped.
By the embodiment of the present invention, adopt and obtain the first touch point on the touchscreen, this first touch point is cursor position, when the first touch point continues to keep touching touch-screen, obtain the second touch point, and determine to enter text erasing mode according to the first touch point and the second touch point, the sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determine that text to be erased is wiped according to sliding trace, namely cursor position is first determined, secondly determine to enter text erasing mode when the first touch point and the second touch point touch touch-screen in succession, and then determine text to be erased according to the sliding trace from the first touch point being reference position thus wipe, when the mobile terminal solved thus in correlation technique carries out text erasing under text editing state, its operation is comparatively loaded down with trivial details, inefficiency, the problem that Consumer's Experience is poor, and then enable user realize the erase operation of text by the mode of multi-point touch, improve the efficiency that user carries out text editing, promote Consumer's Experience simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of the text method for deleting according to the embodiment of the present invention;
Fig. 2 is the schematic diagram carrying out text erasing according to the preferred embodiment of the invention based on multi-point touch;
Fig. 3 is the state transition schematic diagram carrying out text erasing according to the preferred embodiment of the invention based on multi-point touch;
Fig. 4 is the structured flowchart of the text erasing apparatus according to the embodiment of the present invention;
Fig. 5 is the structured flowchart of text erasing apparatus according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the process flow diagram of the text method for deleting according to the embodiment of the present invention.As shown in Figure 1, the method can comprise following treatment step:
Step S102: obtain the first touch point on the touchscreen, wherein, the first touch point is cursor position;
Step S104: when the first touch point continues to keep touching touch-screen, obtain the second touch point, and determine to enter text erasing mode according to the first touch point and the second touch point;
Step S106: the sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determine that text to be erased is wiped according to sliding trace.
In correlation technique, when mobile terminal carries out text erasing under text editing state, comparatively loaded down with trivial details, the inefficiency of its operation, Consumer's Experience is poor.Adopt method as shown in Figure 1, obtain the first touch point on the touchscreen, this first touch point is cursor position, when the first touch point continues to keep touching touch-screen, obtain the second touch point, and determine to enter text erasing mode according to the first touch point and the second touch point, the sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determine that text to be erased is wiped according to sliding trace, namely cursor position is first determined, secondly determine to enter text erasing mode when the first touch point and the second touch point touch touch-screen in succession, and then determine text to be erased according to the sliding trace from the first touch point being reference position thus wipe, when the mobile terminal solved thus in correlation technique carries out text erasing under text editing state, its operation is comparatively loaded down with trivial details, inefficiency, the problem that Consumer's Experience is poor, and then enable user realize the erase operation of text by the mode of multi-point touch, improve the efficiency that user carries out text editing, promote Consumer's Experience simultaneously.
Preferably, in step s 106, obtain sliding trace, and determine that text to be erased can comprise following operation according to sliding trace:
Step S1: calculate first coordinate information of reference position relative to preset coordinate initial point;
Step S2: second coordinate information of final position relative to preset coordinate initial point calculating sliding trace;
Step S3: determine text to be erased according to the first coordinate information and the second coordinate information.
In a preferred embodiment, when needs erasing a few sections of words or certain several word time, as long as move the cursor to need erasing character area near.Now, re-use an other finger (such as: thumb) and touch touch-screen, because screen senses multi-point touch, thus enter into text erasing mode.Under text erasing mode, mobile terminal can by calculating the coordinate information (x1 of slide reference position, and the coordinate information (x2, y2) of slide current stop position thus obtain the content of text chosen of operator as text to be erased y1).
Preferably, in step s 106, carry out erasing to text to be erased can comprise the following steps:
Step S4: judge whether the first touch point and/or the second touch point leave touch-screen;
Step S5: if then wipe text to be erased, or, determine that text to be erased is in selected state.
In a preferred embodiment, two that contact with touch-screen as operator point in arbitrary finger frame out, above-mentioned action, once after being sensed by screen, namely can perform and exit text erase mode operation.Finally, the text erase operation that performed of user is formally effective.Certainly can also frame out by arbitrary finger in two are pointed by operator, above-mentioned action is once after being sensed by screen, first determine that text to be erased is in selected state and is not really wiped, and after two fingers all frame out by the time, selected text is just really wiped, namely no longer visible to operator.
Preferably, in step s 106, at acquisition sliding trace, and after determining text to be erased according to sliding trace, following operation can also be comprised:
Step S6: obtain rollback track, wherein, rollback track to slide from the final position of sliding trace and contrary with the direction of sliding trace;
Step S7: again show the part or all of content of text in text to be erased according to rollback track on the touchscreen, or determining section or full text content are in non-selected state.
In a preferred embodiment, after entering text erasing mode, forefinger can be used to streak want a few sections of words or certain several word wiped, namely above-mentioned word enters erase status thus.Now for operator, above-mentioned word is no longer visible, but these words are not by complete deletion, but is stored in the internal memory of mobile terminal, thus effectively can prevent the maloperation of user.When the maloperation due to user causes the word of hope reservation originally together to be wiped, if user wants the word of the unnecessary erasing of reduction previous moment, only forefinger need be performed rollback operation according to the track of erasing, the word be now originally wiped free of can show again again.
Preferably, in step s 102, obtain the first touch point can comprise the following steps:
Step S8: judge under text editing state whether the duration of contact of the ad-hoc location in touching medium and text edit area exceedes preset duration;
Step S9: if then cursor is moved to ad-hoc location, and ad-hoc location is defined as the first touch point.
In a preferred embodiment, under the touch-screen of mobile terminal is in text editing state (such as: short message editing), when the long ad-hoc location pressed in text edit box of a finger (such as: forefinger) of user, namely can near Fingertip touch display highlighting, and produce the content of text near a magnification region display highlighting and position thereof.Now cursor position is above-mentioned first touch point.
As a preferred embodiment of the present invention, Fig. 2 is the schematic diagram carrying out text erasing according to the preferred embodiment of the invention based on multi-point touch.As shown in Figure 2, in the preferred embodiment, the right hand 102 of operator is positioned at the top of text edit box 101, this operator uses forefinger 104 to be in suitable position (namely this operator wants to wipe the word near cursor position, is equivalent to above-mentioned first touch point herein) by choosing fine setting to make cursor 105.In magnification region display, current cursor present position 108 can be more clearly visible, now, by the small amplitude slip of forefinger 104, can be finely tuned (above-mentioned first touch point changes) position current to cursor thereupon.When the thumb 103 of operator touches touch-screen (being equivalent to above-mentioned second touch point herein), touch-screen is determined to enter text erasing (deletion) pattern thus.In the preferred embodiment, the forefinger 104 of operator slides left and chooses to be deleted text filed 107, is namely equivalent to knock continuously repeatedly Backspace key retrace.If user finds the inner word quantity (such as: script operator wants the word deleted to be " one side is fallen and remitted guilty prisoner all over the world, should have ", but produces maloperation in actual mechanical process by ": " also together erasing) more than wanting to wipe of deleted text.Now, operator by sliding (namely performing rollback operation) round about to make just now again to be shown by the character wiped by mistake in the current position of cursor, or can be in not selected state again.Under text erasing mode, mobile terminal can be obtained the content of text that operator chooses wiped by the coordinate (x2, y2) of the coordinate (x1, y1) and slide current stop position that calculate slide reference position.When touch screen induction frames out to arbitrary finger in thumb and forefinger, exit erasing mode immediately, the word that the word chosen before operator is wiped or wiped before is confirmed.
From another perspective, Fig. 3 is the state transition schematic diagram carrying out text erasing according to the preferred embodiment of the invention based on multi-point touch.As shown in Figure 3, in the preferred embodiment, there is general mode (the namely common text editing interface of presenting to user), position preference pattern (namely adopt a finger touching screen by user and the mobile meeting of fine setting display highlighting near Fingertip touch, and produce the content of text near a magnification region display highlighting and position thereof) and text erasing mode.The technical scheme that the embodiment of the present invention provides is to be changed between above-mentioned three kinds of different modes.Concrete transfer process is as follows:
(1) position preference pattern is converted to from general mode: adopt forefinger touching screen also to finely tune movement by user and just can be converted to position preference pattern from general mode, now, meeting display highlighting near Fingertip touch, and produce the content of text near a magnification region display highlighting and position thereof;
(2) be converted to general mode from position preference pattern: after forefinger is removed screen by user, just can be converted to general mode from position preference pattern;
(3) text erasing mode is converted to from position preference pattern: while user uses forefinger to touch screen, an other finger (such as: thumb) is used again to touch touch-screen, because screen senses multi-point touch, be thus converted to text erasing mode from position preference pattern;
(4) be converted to position preference pattern from text erasing mode: two that contact with touch-screen as user point arbitrary finger frame out, above-mentioned action, once after being sensed by screen, namely can perform and exit text erase mode operation; In the preferred embodiment, suppose that the forefinger of user continues to keep the state of touching screen, and thumb first frames out, and now, just can be converted to position preference pattern from text erasing mode;
(5) be converted to general mode from text erasing mode: in the preferred embodiment, suppose that the thumb of user continues to keep the state of touching screen, and forefinger first frame out, and now, just can be converted to general mode from text erasing mode.
Fig. 4 is the structured flowchart of the text erasing apparatus according to the embodiment of the present invention.As shown in Figure 4, text erasing apparatus can comprise: acquisition module 10, and for obtaining the first touch point on the touchscreen, wherein, the first touch point is cursor position; Determination module 20, for continuing at the first touch point to keep touching touch-screen, obtaining the second touch point, and determining to enter text erasing mode according to the first touch point and the second touch point; According to sliding trace, erasing module 30, for the sliding trace that to obtain with the first touch point position under text erasing mode be reference position, and determines that text to be erased is wiped.
Adopt device as shown in Figure 4, when the mobile terminal solved in correlation technique carries out text erasing under text editing state, comparatively loaded down with trivial details, the inefficiency of its operation, the problem that Consumer's Experience is poor, and then enable user realize the erase operation of text by the mode of multi-point touch, improve the efficiency that user carries out text editing, promote Consumer's Experience simultaneously.
Preferably, as shown in Figure 5, erasing module 30 can comprise: the first computing unit 300, for calculating first coordinate information of reference position relative to preset coordinate initial point; Second computing unit 302, for calculating second coordinate information of final position relative to preset coordinate initial point of sliding trace; First determining unit 304, for determining text to be erased according to the first coordinate information and the second coordinate information.
Preferably, as shown in Figure 5, erasing module 30 can comprise: the first judging unit 306, for judging whether the first touch point and/or the second touch point leave touch-screen; Erase unit 308, for when the first judging unit exports as being, wipes text to be erased, or, determine that text to be erased is in selected state.
Preferably, as shown in Figure 5, erasing module 30 can comprise: acquiring unit 310, for obtaining rollback track, wherein, rollback track be from the final position of sliding trace slide and contrary with the direction of sliding trace; Processing unit 312, for again showing the part or all of content of text in text to be erased on the touchscreen according to rollback track, or determining section or full text content are in non-selected state.
Preferably, as shown in Figure 5, acquisition module 10 can comprise: the second judging unit 102, for judging under text editing state whether the duration of contact of the ad-hoc location in touching medium and text edit area exceedes preset duration; Second determining unit 104, for when the second judging unit exporting as being, moving to ad-hoc location by cursor, and ad-hoc location is defined as the first touch point.
From above description, can find out, above embodiments enable following technique effect (it should be noted that these effects are effects that some preferred embodiment can reach): the function by adopting the mode of multi-point touch to realize text erasing that the embodiment of the present invention provides, make whole operating process remarkable fluency more, particularly for when occurring that on the touch-screen of mobile terminal a large amount of character needs are changed, its text erasing effect is particularly evident.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a text method for deleting, is characterized in that, comprising:
Obtain the first touch point on the touchscreen, wherein, described first touch point is cursor position;
When described first touch point continues to keep the described touch-screen of touching, obtain described second touch point, and determine to enter text erasing mode according to described first touch point and described second touch point;
The sliding trace that to obtain with described first touch point position under described text erasing mode be reference position, and determine that text to be erased is wiped according to described sliding trace.
2. method according to claim 1, is characterized in that, obtains described sliding trace, and determines that described text to be erased comprises according to described sliding trace:
Calculate first coordinate information of described reference position relative to preset coordinate initial point;
Calculate second coordinate information of final position relative to described preset coordinate initial point of described sliding trace;
Described text to be erased is determined according to described first coordinate information and described second coordinate information.
3. method according to claim 1, is characterized in that, carries out erasing comprise described text to be erased:
Judge whether described first touch point and/or described second touch point leave described touch-screen;
If so, then described text to be erased is wiped, or, determine that described text to be erased is in selected state.
4. method according to claim 1, is characterized in that, at the described sliding trace of acquisition, and after determining described text to be erased according to described sliding trace, also comprises:
Obtain rollback track, wherein, described rollback track to slide from the final position of described sliding trace and contrary with the direction of described sliding trace;
According to the part or all of content of text of described rollback track again in text to be erased described in described touch screen display, or, determine that described part or all of content of text is in non-selected state.
5. method according to any one of claim 1 to 4, is characterized in that, obtains described first touch point and comprises:
Under text editing state, judge whether the duration of contact of the ad-hoc location in touching medium and text edit area exceedes preset duration;
If so, then described cursor is moved to described ad-hoc location, and described ad-hoc location is defined as described first touch point.
6. a text erasing apparatus, is characterized in that, comprising:
Acquisition module, for obtaining the first touch point on the touchscreen, wherein, described first touch point is cursor position;
Determination module, for continuing at described first touch point to keep touching described touch-screen, obtaining described second touch point, and determining to enter text erasing mode according to described first touch point and described second touch point;
According to described sliding trace, erasing module, for the sliding trace that to obtain with described first touch point position under described text erasing mode be reference position, and determines that text to be erased is wiped.
7. device according to claim 6, is characterized in that, described erasing module comprises:
First computing unit, for calculating first coordinate information of described reference position relative to preset coordinate initial point;
Second computing unit, for calculating second coordinate information of final position relative to described preset coordinate initial point of described sliding trace;
First determining unit, for determining described text to be erased according to described first coordinate information and described second coordinate information.
8. device according to claim 6, is characterized in that, described erasing module comprises:
First judging unit, for judging whether described first touch point and/or described second touch point leave described touch-screen;
Erase unit, for when described first judging unit exports as being, wipes described text to be erased, or, determine that described text to be erased is in selected state.
9. device according to claim 6, is characterized in that, described erasing module comprises:
Acquiring unit, for obtaining rollback track, wherein, described rollback track be from the final position of described sliding trace slide and contrary with the direction of described sliding trace;
Processing unit, for according to the part or all of content of text of described rollback track again in text to be erased described in described touch screen display, or, determine that described part or all of content of text is in non-selected state.
10. the device according to any one of claim 6 to 9, is characterized in that, described acquisition module comprises:
Second judging unit, for judging under text editing state whether the duration of contact of the ad-hoc location in touching medium and text edit area exceedes preset duration;
Second determining unit, for when described second judging unit exporting as being, moving to described ad-hoc location by described cursor, and described ad-hoc location is defined as described first touch point.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408151.6A CN104423869A (en) | 2013-09-09 | 2013-09-09 | Text erasing method and device |
| PCT/CN2013/085187 WO2014169597A1 (en) | 2013-09-09 | 2013-10-14 | Text erasure method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408151.6A CN104423869A (en) | 2013-09-09 | 2013-09-09 | Text erasing method and device |
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| CN104423869A true CN104423869A (en) | 2015-03-18 |
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| CN201310408151.6A Pending CN104423869A (en) | 2013-09-09 | 2013-09-09 | Text erasing method and device |
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| WO (1) | WO2014169597A1 (en) |
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| CN105389022A (en) * | 2015-11-18 | 2016-03-09 | 广东欧珀移动通信有限公司 | Processing method and apparatus for deleting content already on screen |
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| CN115113793A (en) * | 2022-05-25 | 2022-09-27 | 海信视像科技股份有限公司 | Gesture erasing method and device and electronic equipment |
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| CN107710109A (en) * | 2015-06-12 | 2018-02-16 | 夏普株式会社 | Erasing apparatus and instruction input system |
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| CN105808516A (en) * | 2016-03-07 | 2016-07-27 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN105808516B (en) * | 2016-03-07 | 2020-02-04 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105824568A (en) * | 2016-03-30 | 2016-08-03 | 苏州佳世达电通有限公司 | Electronic device and operation method thereof |
| CN106775286B (en) * | 2016-11-14 | 2019-11-29 | 广东小天才科技有限公司 | A kind of erasure detection method and device of screen area |
| CN106775286A (en) * | 2016-11-14 | 2017-05-31 | 广东小天才科技有限公司 | A kind of erasure detection method and device of screen area |
| CN106648436A (en) * | 2016-12-30 | 2017-05-10 | 维沃移动通信有限公司 | Text message processing method and mobile terminal |
| CN106843727A (en) * | 2017-01-05 | 2017-06-13 | 上海斐讯数据通信技术有限公司 | Prevent word from missing delet method and system |
| CN106843727B (en) * | 2017-01-05 | 2020-06-09 | 北京数科网维技术有限责任公司 | Method and system for preventing character from being deleted by mistake |
| CN110806828A (en) * | 2018-08-02 | 2020-02-18 | 珠海金山办公软件有限公司 | Method and device for erasing PDF document content |
| CN110806828B (en) * | 2018-08-02 | 2023-11-07 | 珠海金山办公软件有限公司 | Method and device for erasing PDF document content |
| WO2020224158A1 (en) * | 2019-05-05 | 2020-11-12 | 深圳传音控股股份有限公司 | Editing method, computer-readable storage medium, and terminal |
| CN114003145A (en) * | 2021-11-01 | 2022-02-01 | 深圳市康冠商用科技有限公司 | Touch screen writing and erasing method and device, electronic whiteboard and storage medium |
| CN114003145B (en) * | 2021-11-01 | 2024-01-09 | 深圳市康冠商用科技有限公司 | Touch screen writing and erasing method and device, electronic whiteboard and storage medium |
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| WO2014169597A1 (en) | 2014-10-23 |
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