CN103645829A - Character deletion method and portable terminal utilizing same - Google Patents

Abstract

The invention discloses a character deletion method and a portable terminal utilizing the same. The method comprises the steps as follows: a character detection step, wherein whether characters exist on two sides of a cursor or not is detected in an input method state; a character deletion mode setting step, wherein a character deletion mode of a virtual deletion key is set on the basis of a detection result of the detection step; and a character deletion step, wherein a user operation is identified so as to execute a deletion operation on the basis of the character deletion mode set in the setting step.

Description

Character deletion method and portable terminal using same

technical field

The invention relates to a character deletion method, in particular to a character deletion method which can conveniently perform a deletion operation no matter which side of the character the cursor is on, and a portable terminal using the same.

Background technique

With the rapid development of intelligent systems for portable terminals, portable terminals play an increasingly important role in people's daily social activities. The current intelligent portable terminal not only provides a convenient voice communication platform, but its text communication platform is also more convenient than traditional portable terminals, and provides more functions.

Therefore, along with the development of intelligent systems, various character input systems have been transplanted from conventional computers to portable terminals.

However, compared with conventional large-scale terminals such as computers, the biggest feature of portable terminals such as mobile phones is that they do not have a mouse with an auxiliary input function.

Therefore, when the portable terminal uses an input method, it is necessary to use the user's hand or a stylus to delete and correct the input characters. However, this method has the problem that the accuracy of cursor positioning by the user's hand or stylus is not high, which causes a lot of trouble and trouble for editing the text that has been input.

FIG. 1 is a schematic diagram of an input screen of a conventional portable terminal. Symbol 10 represents an existing virtual delete key. It can be seen from the figure that the virtual delete key 10 of the current portable terminal only provides a delete function along one side. Such a unidirectional deletion function can hardly support the input mode of a single character, and various input methods currently support fuzzy input and intelligent associative input, so a large number of characters can be input at one time.

Therefore, when editing text content with a large number of characters, especially when performing deletion operations, the inaccurate cursor positioning and the one-way deletion function greatly reduce the efficiency of the text input system, and users often need to perform multiple cursor positioning operations and Page zoom operation.

Contents of the invention

The present invention is proposed to solve the above problems, and its purpose is to provide a character deletion method that provides various character deletion methods according to the position of the cursor and a portable terminal using the method.

In order to achieve this purpose, one aspect of the present invention provides a character deletion method for a portable terminal, including: a character detection step, in the input method state, detecting whether there are characters on both sides of the cursor; a character deletion mode setting step, based on the The detection result of the detection step is to set the character deletion mode of the virtual delete key; the character deletion step is to identify the user's operation and execute the deletion operation based on the character deletion mode set in the setting step.

Preferably, in the character deletion mode setting step, if there are characters on both sides of the cursor, the character deletion mode of the virtual delete key can be set as the mode to be deleted; if there are only characters on one side of the cursor, then the The character deletion mode of the virtual delete key is set to one-way deletion mode, and the deletion direction is adjusted to the direction where the character is located.

Preferably, the step of setting the character deletion mode may also include the following steps: in the pending deletion mode, the virtual delete key receives a user's sliding operation; judges the sliding direction of the sliding operation; according to the sliding direction, the The deletion direction of the virtual delete key is adjusted to be along the sliding direction.

Preferably, in the step of judging the sliding direction of the sliding operation, it may be detected whether the sliding distance of the virtual delete key along a side direction is greater than a threshold, and if it is greater than the threshold, the sliding direction is judged as the side direction.

Preferably, the threshold may be half of a character bit.

Preferably, the character deletion mode setting step may also include the following steps: in the mode to be deleted, setting the deletion direction of the character as the default direction; the virtual delete key receives the user's operation; judging whether the user's operation is a click operation or Sliding operation; if the user's operation is a click operation, then the character deletion direction is determined as the default direction, and if the user's operation is a sliding operation, then the character deletion direction is changed to a direction opposite to the default direction.

Preferably, in the character deletion mode setting step, if there are characters on both sides of the cursor, the character deletion mode of the virtual delete key is set to a two-way deletion mode.

Preferably, in the two-way deletion mode, characters are simultaneously deleted in both directions in response to each click operation of the user.

In order to achieve the purpose, according to another aspect of the present invention, a portable terminal is provided, including: a character detection unit, which detects whether there are characters on both sides of the cursor in the input method state; a character deletion mode setting unit, based on the character detection The detection result of the unit is to set the character deletion mode of the virtual delete key; the character deletion unit is based on the character deletion mode set by the character deletion mode setting unit, and performs the deletion operation according to the user's operation.

Preferably, if there are characters on both sides of the cursor, the character deletion mode setting unit can set the character deletion mode of the virtual delete key to the mode to be deleted; if there are characters on only one side of the cursor, the character deletion mode The setting unit can set the character deletion mode of the virtual delete key to a one-way deletion mode, and adjust the deletion direction to the direction where the character is located.

Preferably, it may also include a touch detection unit for detecting the user's touch operation on the virtual delete key in the mode to be deleted, and the touch detection unit may also include a touch detection unit for detecting the user's sliding operation on the virtual delete key and The touch coordinate detection unit of the sliding direction, the character deletion mode setting unit adjusts the deletion direction of the virtual delete key to be along the sliding direction according to the sliding direction detected by the touch detection unit.

Preferably, when the touch detection unit judges the sliding direction of the sliding operation, it detects whether the sliding distance of the virtual delete key along a side direction is greater than a threshold, and when it is greater than the threshold, judges the sliding direction as the side direction .

Preferably, the threshold may be half of a character bit.

Preferably, it also includes a touch detection unit for detecting the user's touch operation on the virtual delete key in the mode to be deleted, and the touch detection unit includes a touch detection unit for detecting the user's sliding operation and sliding direction on the virtual delete key The touch coordinate detection unit, wherein the character deletion mode setting unit first sets the deletion direction of the character as the default direction in the mode to be deleted, and when the user’s operation detected by the touch detection unit is a click operation Next, the character deletion direction is determined as the default direction, and when the user's operation detected by the touch detection unit is a sliding operation, the character deletion direction is changed to a direction opposite to the default direction.

Preferably, if there are characters on both sides of the cursor, the character deletion mode setting unit can set the character deletion mode of the virtual delete key to a two-way deletion mode.

Preferably, in the two-way deletion mode, characters are simultaneously deleted in both directions in response to each click operation of the user.

According to the present invention, compared with the conventional way of deleting characters from right to left, it can also provide a way of deleting characters from left to right, and can reduce the adverse effects caused by cursor positioning errors.

Moreover, according to the present invention, the direction of character deletion can be arbitrarily selected according to the position of the cursor in a plurality of character strings, thereby improving the efficiency of the character input system.

Furthermore, according to the present invention, characters are simultaneously deleted in both directions of the cursor, thereby improving the efficiency of the character input system.

Description of drawings

FIG. 1 is a schematic diagram of an input screen of a conventional portable terminal.

FIG. 2 is a block diagram showing the configuration of a portable terminal according to the present invention.

FIG. 3 is a flow chart of a character deletion method according to the present invention.

Fig. 4 is a flow chart of the first embodiment of the character deletion mode setting steps according to the present invention.

FIG. 5 is a flow chart of a second embodiment of the character deletion mode setting steps according to the present invention.

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the touch-type portable terminal is taken as an example of a smart phone, but the present invention is not limited thereto, and also includes other touch-type portable terminals such as a tablet computer and a smart camera.

FIG. 2 is a block diagram showing the configuration of a portable terminal according to the present invention.

As can be seen from the figure, the portable terminal according to the present invention may include a touch detection unit 100 , a character detection unit 102 , a character deletion mode setting unit 104 , a character deletion unit 106 , and a control unit 108 .

The control unit 108 is used to control the portable terminal to perform various operations.

Moreover, the portable terminal of the present invention further includes a storage unit for storing various characters and control instructions.

In the text display mode or editing mode, the touch detection unit 100 is used to identify the user's touch on the display screen of the portable terminal and position the cursor at a corresponding position.

In the text input mode, the character detection unit 102 is used to detect whether there are characters on both sides of the cursor. That is, when the user positions the cursor at a certain position in the character string with a finger or a stylus, the character detection unit 102 detects whether there are characters on both sides of the cursor. For the method of detecting whether there are characters on both sides of the cursor, various methods in the prior art can be used, and details will not be repeated here.

At this time, the so-called two sides of the cursor refer to the left and right sides in the horizontal display mode of characters, and refer to the upper and lower sides in the vertical display mode of characters. Moreover, the so-called characters are various characters, symbols, spaces, graphics, etc. that can be input through the input system of the mobile terminal.

The character deletion mode setting unit 104 can set the character deletion mode of the virtual delete key based on the detection result of the character detection unit 102 .

For example, in the detection result of the character detection unit 102, if there are characters on both sides of the cursor, then the character deletion mode setting unit 104 is set to the mode to be deleted with the character deletion mode of the virtual delete key; , then the character deletion mode setting unit 104 sets the character deletion mode of the virtual delete key to a one-way deletion mode, and adjusts the deletion direction to the direction where the character is located.

In the mode to be deleted, when the user presses the virtual delete key, the virtual delete key will not immediately execute the delete operation but wait for further instructions from the user, and the delete operation can only be performed after the direction of character deletion is determined. . For example, in one embodiment, in the mode to be deleted, if the user continues to click on the virtual delete key, no delete operation will be performed. The virtual delete key first only receives a sliding operation from the user, and by judging the sliding operation The direction to determine the character deletion direction, and then receive the user's deletion instruction.

In order to improve the user's convenience, in another embodiment, in the pending deletion mode, the character deletion mode of the virtual delete key may default to the forward deletion mode. At this time, if the user's character deletion direction is consistent with the default direction, the character deletion direction can be determined as the default direction by pressing the virtual delete key once, and if the user's character deletion direction is opposite to the default direction, you can press the virtual delete key once. Swipe to change the character deletion direction to the opposite direction from the default direction. At this time, when the deletion direction of the character changes through the sliding operation, the virtual deletion unit may receive the click operation to determine the transformed direction, and then receive the user's deletion instruction.

In addition, the default direction of the character deletion mode may be a backward deletion direction in addition to the above-mentioned forward deletion direction, which can be set arbitrarily according to the needs of the user.

Also, the forward or backward direction in the default direction refers to the case when characters are arranged in the horizontal direction, and the forward or backward direction can be changed to the upward or downward direction when the characters are arranged in the vertical direction.

That is, in the mode to be deleted, the touch detection unit 100 detects the user's touch operation on the virtual delete key, that is, detects the user's click operation and slide operation on the virtual delete key. Preferably, the touch detection unit 100 further includes a touch coordinate detection unit for detecting whether the user has made a sliding operation on the virtual delete key and detecting the sliding direction.

Specifically, the touch coordinate detection unit judges whether the operation performed by the user is a click operation or a slide operation by calculating changes in the coordinates of the user's touch screen within a predetermined time period. For example, when the coordinates of the touch point hardly change within the predetermined time, and the touch duration is short, it can be determined that the user has made a click operation; When the duration is relatively long, it can be judged as a sliding operation made by the user.

In this embodiment, considering that the width of a general virtual delete key is small, a threshold may be set to determine whether the user has made a sliding operation and the direction of the sliding operation. At this time, whether the user performs a sliding operation and the direction of the sliding operation can be determined by calculating the change of the coordinates of the user's touch point within a predetermined time. For example, when the sliding distance is greater than a threshold, it may be determined that the user has performed a sliding operation. Preferably, the threshold is half of a character bit.

When the deletion direction of the character is determined in the mode to be deleted, the shape or graphic of the virtual delete key can be changed accordingly, so that the user can visually confirm the deletion mode and direction of the character.

Also, in one-way delete mode, adjust the delete direction to the direction where the characters are. That is, if the character exists on the left side of the cursor, the virtual delete key provides a character deletion function from right to left, so that the user can delete the character on the left side of the cursor by continuing to click on the virtual delete key; if the character exists on the right side of the cursor On the side, the virtual delete key provides a character deletion function from left to right similar to the delete key of a general computer, so that the user can delete the character on the right side of the cursor by continuing to click the virtual delete key. At this time, if the user continues to press the virtual delete key, the virtual delete key will continuously delete characters at predetermined time intervals (for example, 100 ms).

Moreover, as a result of the detection by the character detection unit 102, if there are characters on both sides of the cursor, the character deletion mode setting unit 104 can also set the character deletion mode of the virtual delete key to a two-way deletion mode. In this two-way deletion mode, characters are simultaneously deleted in both directions in response to each click operation by the user. Accordingly, when the user places the cursor in the middle of two characters to be deleted by mistake, the user can delete the two characters at the same time by only clicking the virtual delete key once, thereby improving the efficiency of text editing.

The character deletion unit 106 may perform a character deletion operation according to a user's operation based on the character deletion mode set by the character deletion mode setting unit 104 . For example, in the one-way delete mode, each character is deleted sequentially along one side according to the user's click type (single-click or long press), while in the two-way delete mode, characters are simultaneously deleted along two directions according to the user's click type, Accordingly, the editing efficiency of text can be greatly improved.

FIG. 3 is a flow chart of a character deletion method according to the present invention. Fig. 4 is a flow chart of the first embodiment of the character deletion mode setting steps according to the present invention. FIG. 5 is a flow chart of a second embodiment of the character deletion mode setting steps according to the present invention.

The character deletion method according to the present invention may include the following steps: a character detection step S100, a character deletion mode setting step S200, and a character deletion step S300.

In step S100, in the input method state, it is detected whether there are characters on both sides of the cursor. The characters include various characters, symbols, spaces, graphics, etc. that can be input through the input system of the portable terminal.

Next, in step S200, based on the detection result of the character detection step S100, the character deletion mode of the virtual delete key is set.

Specifically, in step S200, if there are characters on both sides of the cursor, the character deletion mode of the virtual delete key is set to the mode to be deleted (S210); if only one side of the cursor has characters, then the virtual delete key The character deletion mode is set to a one-way deletion mode (S220), and the deletion direction is adjusted to the direction toward the character.

According to an embodiment, in the waiting-to-delete mode, the virtual delete key cannot perform the character deletion function immediately, and can perform the deletion function only after the character deletion direction is determined. Accordingly, the virtual delete key waits for further instructions from the user to determine the direction of character deletion. According to the first embodiment, in the waiting-to-delete mode, the virtual delete key first only receives a sliding operation from the user, and determines the character deletion direction by judging the direction of the sliding operation, and then receives the user's deletion instruction. According to the second embodiment, in the pending deletion mode, the character deletion mode of the virtual delete key may default to a forward deletion mode. At this time, if the user's character deletion direction is consistent with the default direction, the character deletion direction can be determined as the default direction by pressing the virtual delete key once, and if the user's character deletion direction is opposite to the default direction, you can press the virtual delete key once. Swipe to change the character deletion direction to the opposite direction from the default direction. At this time, when the deletion direction of the character changes through the sliding operation, the virtual delete key may receive a click operation to confirm the transformed direction, and then receive the user's deletion instruction.

According to the first embodiment, the character deletion mode setting step S200 may also include the following steps: in the pending deletion mode, the virtual delete key receives the user's sliding operation (S211); judging the sliding direction of the sliding operation (S212); According to the sliding direction, the character deletion direction of the virtual delete key is adjusted to be along the sliding direction (S213).

According to the second embodiment, the character deletion mode setting step S200 may also include the following steps: in the mode to be deleted, setting the deletion direction of the character as the default direction (S214); the virtual delete key receives the user's operation (S215); Judging whether the user's operation is a click operation or a sliding operation (S216); if the user's operation is a click operation, then the deletion direction of the character is determined as the default direction (forward or backward) (S217), and if the user's operation is slide operation, based on the slide operation, the character deletion direction is changed to a direction opposite to the default direction (S218). In this case, after step S218, a step of receiving a user's click operation to confirm the direction of character deletion as the transformed direction may also be included. At this time, in step S215, if the user makes a sliding operation, it is obvious that the direction of the sliding operation must be opposite to the default direction.

At this time, for example, it may be determined whether the operation performed by the user is a click operation or a slide operation by calculating the change of the coordinates of the user touching the screen within a predetermined time. For example, when the coordinates of the touch point within the predetermined time hardly change, and the touch duration is short, it can be determined that the user has made a click operation, and when the coordinates of the touch point within the predetermined time change greatly, and When the touch lasts for a relatively long time, it can be judged as a sliding operation by the user.

In this embodiment, considering that the width of a general virtual delete key is small, a threshold may be set to determine whether the user has made a sliding operation and the direction of the sliding operation. At this time, whether the user performs a sliding operation and the direction of the sliding operation can be determined by calculating the change of the coordinates of the user's touch point within a predetermined time. For example, when the sliding distance is greater than a threshold, it may be determined that the user has performed a sliding operation. Preferably, the threshold is half of a character bit.

When the deletion direction of the character is determined in the mode to be deleted, the shape or graphic of the virtual delete key can be changed accordingly, so that the user can visually confirm the deletion mode and direction of the character.

Wherein, the step S212 may be configured as: judging whether the sliding distance of the virtual delete key along a side direction is greater than a threshold, and if it is greater than the threshold, judging the sliding direction as the side direction. Preferably, the threshold is half of a character bit.

In addition, in step S200, if there are characters on both sides of the cursor, the character deletion mode of the virtual delete key may also be set to a two-way deletion mode (S230).

Then, in step S300, based on the character deletion mode set in step S200, the user's operation is recognized to perform a deletion operation. For example, in the one-way delete mode, each character is deleted sequentially along one side according to the user's click type (single-click or long press), while in the two-way delete mode, characters are simultaneously deleted along two directions according to the user's click type, Accordingly, the editing efficiency of text can be greatly improved. At this time, if the user continues to press the virtual delete key, the virtual delete key will continuously delete characters at predetermined time intervals (for example, 100 ms).

Accordingly, compared with the previous simple method of deleting characters from right to left, the present invention can freely select the direction of character deletion according to the actual position of the cursor, thus reducing the adverse effects caused by cursor positioning errors , improve the efficiency of text editing.

The present invention is not limited to the above-described embodiments, and various variations and modifications can be made without departing from the scope of the present invention.

Claims (16)

1. a character deleting method for portable terminal, is characterized in that, comprising:

Character detecting step, under input method status, whether the both sides of detecting cursor there is character;

Character deletion pattern setting steps, the testing result based on described detecting step, arranges the character deletion pattern of virtual cancel key;

Character deletion step, the character deletion pattern based on set in described setting steps, identification user operation and carry out deletion action.

2. method according to claim 1, is characterized in that, in described character deletion pattern setting steps,

If the both sides of cursor all exist character, the character deletion pattern of virtual cancel key is set to pattern to be deleted;

If an only side of cursor exists character, the character deletion pattern of virtual cancel key is set to unidirectional puncturing pattern, by deleting direction, is adjusted into towards the direction at character place.

3. method according to claim 2, is characterized in that, described character deletion pattern setting steps also comprises the steps:

Under pattern to be deleted, described virtual cancel keyed jointing is received user's slide;

Judge the glide direction of described slide;

According to described glide direction, the deletion direction of described virtual cancel key is adjusted into along this glide direction.

4. method according to claim 3, it is characterized in that, in the step of glide direction that judges described slide, whether the sliding distance along a side direction detecting for virtual cancel key is greater than threshold value, when being greater than this threshold value, glide direction is judged as to this side direction.

5. method according to claim 4, is characterized in that, described threshold value is half of a character bit.

6. method according to claim 2, is characterized in that, described character deletion pattern setting steps also comprises the steps:

Under pattern to be deleted, the deletion direction of character is set to default direction;

Described virtual cancel keyed jointing is received user's operation;

Judgement user's operation is clicking operation or slide;

If user's operation is clicking operation, by the deletion orientation determination of character, be this default direction, and if user's operation is slide, by the deletion direction transformation of character, be the direction contrary with this default direction.

7. method according to claim 1, is characterized in that, in described character deletion pattern setting steps, if the both sides of cursor all exist character, the character deletion pattern of virtual cancel key is set to bidirectional deleting pattern.

8. method according to claim 7, is characterized in that, in described bidirectional deleting pattern, in response to user's clicking operation each time, at two side directions while delete characters.

9. a portable terminal, is characterized in that, comprising:

Character detecting unit, under input method status, whether the both sides of detecting cursor there is character;

Character deletion mode setting unit, the testing result based on described character detecting unit, arranges the character deletion pattern of virtual cancel key;

Character deletion unit, based on the set character deletion pattern of described character deletion mode setting unit, carries out deletion action according to user's operation.

10. portable terminal according to claim 9, is characterized in that, if the both sides of cursor all exist character, the character deletion pattern of described character deletion mode setting unit virtual cancel key is set to pattern to be deleted;

If an only side of cursor exists character, the character deletion pattern of described character deletion mode setting unit virtual cancel key is set to unidirectional puncturing pattern, and is adjusted into towards the direction at character place deleting direction.

11. portable terminals according to claim 10, it is characterized in that, also be included under pattern to be deleted, touch detection unit for detection of user for the touch operation of described virtual cancel key, described touch detection unit comprises for detection of user for the slide of virtual cancel key and the touch coordinate detecting unit of glide direction

Described character deletion mode setting unit, according to the detected glide direction of described touch detection unit, is adjusted into the deletion direction of described virtual cancel key along this glide direction.

12. portable terminals according to claim 11, it is characterized in that, when described touch detection unit judges the glide direction of described slide, whether detection is greater than threshold value for the sliding distance along a side direction of virtual cancel key, when being greater than this threshold value, glide direction is judged as to this side direction.

13. portable terminals according to claim 12, is characterized in that, described threshold value is half of a character bit.

14. portable terminals according to claim 10, it is characterized in that, also be included under pattern to be deleted, touch detection unit for detection of user for the touch operation of described virtual cancel key, described touch detection unit comprises for detection of user for the slide of virtual cancel key and the touch coordinate detecting unit of glide direction

Wherein, described character deletion mode setting unit is under pattern to be deleted, first the deletion direction of character is set to default direction, and in the situation that by the detected user's of described touch detection unit the clicking operation that is operating as, by the deletion orientation determination of character, it is this default direction, and in the situation that by the detected user's of described touch detection unit the slide that is operating as, be the direction contrary with this default direction by the deletion direction transformation of character.

15. portable terminals according to claim 9, is characterized in that,

If the both sides of cursor all exist character, the character deletion pattern of character deletion mode setting unit virtual cancel key is set to bidirectional deleting pattern.

16. methods according to claim 15, is characterized in that, in described bidirectional deleting pattern, in response to user's clicking operation each time, at two side directions while delete characters.

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