Disclosure of Invention
The invention aims to provide a screen control method and device of a touch screen and a mobile terminal, aiming at overcoming the defect that the screen is easy to touch by mistake and/or shield by directly sliding the display area of the screen.
The invention provides a screen control method of a touch screen, which comprises the following steps: entering a controllable interface state of the screen in the unlocking state of the screen; under the state of the controllable interface, page switching control in four directions of up, down, left and right of a display area of the screen is realized by controlling a home key of the screen; wherein the home key is located outside the display area of the screen.
Preferably, in the unlocked state of the screen, entering a controllable interface state of the screen includes: determining whether the screen is in an unlocked state; if the screen is in the unlocking state, acquiring starting conditions of the controllable interface state; and entering the controllable interface state based on the starting condition to allow the control bar to be controlled.
Preferably, the starting condition of the controllable interface state includes: and pressing the entity home key of the screen for a duration longer than a first preset duration, and/or quickly double-clicking the entity home key or the virtual home key of the screen.
Preferably, acquiring the starting condition of the state of the controllable interface includes: detecting the duration of pressing the entity home key of the screen, comparing the duration with a first preset duration to determine whether the duration is longer than the first preset duration, if so, acquiring a starting condition that the duration of pressing the entity home key of the screen is longer than the first preset duration, and entering a controllable interface state of the screen; and/or detecting a time interval between double-clicking the entity home key or the virtual home key of the screen and double-clicking the entity home key or the virtual home key of the screen, comparing the time interval with a second preset time length to determine whether the time interval is smaller than the second preset time length, if so, acquiring a starting condition that the entity home key or the virtual home key of the screen is quickly double-clicked, and entering a controllable interface state of the screen.
Preferably, the page switching control in the up, down, left, and right directions of the display area of the screen is realized by controlling an entity home key of the operation bar of the screen or by controlling a virtual home key of the screen, and the page switching control includes: when the entity home key enters the controllable interface state, the sliding of the display area of the screen to the set direction is realized by operating the entity home key of the operation bar or by operating the virtual home key of the screen when the virtual home key enters the controllable interface state, namely, the current page of the screen is switched to the target page in the opposite direction of any one of the up, down, left and right directions; sliding the entity home key or the virtual home key once from left to right to slide the display area of the screen to right by one page, namely switching the current page to the target page from left to right by one page; or sliding the entity home key or the virtual home key once from right to left to slide the display area of the screen one page to left, namely switching the current page to the target page one page to right; or sliding the entity home key or the virtual home key once from top to bottom to slide the screen down by one page, namely switching the current page up to one page to the target page; or sliding the entity home key or the virtual home key from bottom to top once to make the screen slide upwards by one page, namely switching the current page downwards by one page to the target page.
In accordance with the above method, another aspect of the present invention provides a screen operating device for a touch screen, including: the interface entering unit is used for entering a controllable interface state of the screen in the unlocking state of the screen; the screen control unit is used for realizing page switching control in four directions of up, down, left and right of a display area of the screen by controlling a home key of the screen in the controllable interface state; wherein the home key is located outside the display area of the screen.
Preferably, the interface entry unit includes: the condition acquisition module is used for determining whether the screen is in an unlocking state; if the screen is in the unlocking state, acquiring starting conditions of the controllable interface state; and the interface starting module is used for entering the controllable interface state based on the starting condition so as to allow the control bar to be controlled.
Preferably, the starting condition of the controllable interface state includes: and pressing the entity home key of the screen for a duration longer than a first preset duration, and/or quickly double-clicking the entity home key or the virtual home key of the screen.
Preferably, the condition obtaining module includes: the pressing duration detection submodule is used for detecting the duration of pressing the entity home key of the screen, comparing the duration with a first preset duration to determine whether the duration is longer than the first preset duration, if so, acquiring a starting condition that the duration of pressing the entity home key of the screen is longer than the first preset duration, and entering a controllable interface state of the screen; and/or the time interval detection submodule is used for detecting the time interval between double-clicking the entity home key or the virtual home key of the screen and double-clicking the entity home key or the virtual home key of the screen, comparing the time interval with a second preset time length to determine whether the time interval is smaller than the second preset time length, if so, acquiring the starting condition that the entity home key or the virtual home key of the screen is quickly double-clicked, and entering the operable interface state of the screen.
Preferably, the screen manipulation unit includes: the operation bar control module is used for realizing the sliding of the display area of the screen to a set direction by operating the entity home key of the operation bar when the entity home key enters the controllable interface state or by operating the virtual home key of the screen when the virtual home key enters the controllable interface state, namely switching the current page of the screen to a target page in the opposite direction of any one of the up, down, left and right directions; the operation bar manipulation module further comprises: the page left switching submodule is used for sliding the entity home key or the virtual home key once from left to right so as to slide the display area of the screen to right by one page, namely, switching the current page to the target page to left by one page; or, the page right switching submodule is used for sliding the entity home key or the virtual home key once from right to left, so that the display area of the screen slides leftwards by one page, namely, the current page is switched rightwards by one page to the target page; or, the on-page switching sub-module is configured to slide the entity home key or the virtual home key once from top to bottom, so that the screen slides down by one page, that is, the current page is switched to the target page by one page facing up; or, the page down-switching sub-module is configured to slide the entity home key or the virtual home key from bottom to top once, so that the screen slides up by one page, that is, the current page is switched down by one page to the target page.
In accordance with the above apparatus, another aspect of the present invention provides a mobile terminal, including: the screen control device of the touch screen is provided.
According to the scheme, the operation bar is operated in the controllable interface state, so that the control of the display area of the screen (such as a mobile phone screen) can be realized, the limitation that a user can only slide up and down, left and right in the display area of the screen to switch pages (namely display pages) in the prior art can be solved, the problem that the user can mistakenly touch other clickable places when the display area of the screen slides and the problem that the user uses the screen due to the fact that the user fingers can shield part of display contents on the screen when the user fingers slide on the screen to influence the use of the user are solved, the use of the user is more convenient, and the user experience can be greatly improved.
Furthermore, the scheme of the invention can realize that a user can control the display area of the screen to slide and page up, down, left and right on the operation bar (namely the non-display area part of the screen) below the screen (such as a mobile phone screen) so as to solve the problem that the user can mistakenly touch a certain clickable button on the screen or can shield the content on the screen when the user needs to slide the page, thus the user experience can be better met, and the user experience is not unfriendly caused by the problem of mistakenly touching or shielding the content on the screen.
Furthermore, according to the scheme of the invention, the function of switching pages by sliding the screen in four directions of up, down, left and right can be realized by the user through the operation bar of the finger below the screen of the mobile terminal (such as a mobile phone), the operation mode is simple and convenient, the reliability is high, and the convenience in use and the user experience can be greatly improved.
Therefore, the scheme of the invention solves the problems that the operation of the display area of the screen is realized by operating the operation bar in the controllable interface state, the use efficiency is improved, and the use difficulty is reduced, thereby overcoming the defects of inconvenient use, high misoperation rate and poor user experience in the prior art, and realizing the beneficial effects of convenient use, low misoperation rate and good user experience.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, a method for controlling a touch screen is provided, as shown in the flowchart of fig. 1. The screen control method of the touch screen comprises the following steps:
at step S110, in the unlocked state of the screen, a state of a manipulatable interface (e.g., the manipulatable interface 200) of the screen is entered. The screen is controlled through the operation bar in the controllable interface state, other clickable places or other buttons of the screen cannot be touched by mistake, the display area of the screen is not shielded, the operation mode is simple and reliable, and the universality is high.
The following further describes a specific process of entering the operable interface state of the screen in the unlocked state of the screen in step S120 with reference to a flowchart of an embodiment of interface entering process in the method of the present invention shown in fig. 2.
Step S210, determining whether the screen is in an unlocking state; and if the screen is in the unlocking state, acquiring the starting condition of the controllable interface state. The starting condition of the controllable interface state is obtained to enter the controllable interface state, more choices can be used for a user, the user can operate according to the starting condition when needing to operate through the controllable interface state, and the use convenience and flexibility are good; in addition, whether the user can enter the controllable interface state is judged by acquiring the starting condition, so that the operation of entering the controllable interface state is high in reliability and good in accuracy.
Wherein, the starting condition of the controllable interface state comprises: and pressing the entity home key of the screen for a duration longer than a first preset duration, and/or quickly double-clicking the entity home key or the virtual home key of the screen. The controllable interface state is entered through the entity home key and/or the controllable interface state is entered through the virtual home key to serve as a starting condition, so that the user can conveniently enter the controllable interface state in a more convenient and faster mode according to actual use requirements and response conditions of corresponding operation, and the method is humanized.
Optionally, in an embodiment, the acquiring the starting condition of the state of the controllable interface in step S210 includes: detecting the duration of pressing the entity home key (such as the entity home key 204) of the screen, comparing the duration with a first preset duration to determine whether the duration is longer than the first preset duration, if so, acquiring a starting condition that the duration of pressing the entity home key of the screen is longer than the first preset duration, and entering a controllable interface state of the screen. The method and the device have the advantages that the duration of pressing duration of the user, namely the pressing duration, is detected when the user presses the entity home key, so that the starting condition that the pressing duration is greater than a first preset duration is obtained, the operation mode is flexible and reliable, and the use convenience of the user is good.
The entity home key refers to an entity main key (home key) at an operation bar below a screen (for example, a mobile phone screen). For example: the difference between the physical home key and the virtual home key is that it is a physical key that can be pressed to return directly to the home page.
Optionally, in another embodiment, the acquiring the starting condition of the state of the controllable interface in step S210 includes: detecting a time interval between double-clicking the entity home key or the virtual home key of the screen and double-clicking the two times, comparing the time interval with a second preset time length to determine whether the time interval is smaller than the second preset time length, if so, acquiring a starting condition that the entity home key or the virtual home key of the screen is quickly double-clicked, and entering a controllable interface state of the screen. The double-click speed of the user is detected when the user quickly double-clicks the virtual home key, so that the starting condition that the time interval between two clicks is smaller than the second preset time length is obtained, the operation mode is simple and convenient, more flexible selection choices are provided for the user, and the user friendliness is good.
The virtual home key refers to any place where the screen (for example, a mobile phone screen) can float, and operations on the screen can be executed through the virtual home key, for example: open applications that the user commonly uses, go back to home screen, lock screen, open application list of recent task switch, and so on. For example: the virtual home key is a graphic virtual home key in a control bar below a screen, and can be used for directly returning to a home page by touching the key.
Preferably, the second preset duration is far shorter than the first preset duration. The second preset time is set to be far shorter than the first preset time, so that starting conditions of entering the controllable interface state through the entity home key and entering the controllable interface state through the virtual home key are distinguished more obviously, a user can conveniently and flexibly select a more convenient mode to enter the controllable interface state according to actual use requirements and response conditions of corresponding operation, and the humanization is good.
Step S220, based on the starting condition, entering the controllable interface state to allow the control bar to be controlled. When the current operation of the user meets the preset starting condition, the user is allowed to enter the controllable interface state, the operation on the screen is realized through the control on the operation bar, the defects that the use effect and the use experience are influenced due to the fact that the user touches and shades the screen by mistake when directly controlling the screen are avoided, and then the use of the user is more convenient and the user experience is better.
In step S120, in the state of the controllable interface, by controlling the home key of the screen, page switching control in four directions, i.e., up, down, left, and right, of the display area of the screen is implemented; wherein the home key is located outside the display area (for example, the display area 202) of the screen. And the home key of the screen comprises an entity home key and a virtual home key. Through under the controllable mode at controllable interface state, according to the user demand to realize the control demand to the display area of screen through controlling to the operation bar, the operation flexibility is good, and the reliability is high, and user experience can promote greatly.
Preferably, the step S120 includes: when the entity home key enters the controllable interface state, the sliding of the display area of the screen to the set direction is realized by operating the entity home key of the operation bar or by operating the virtual home key of the screen when the virtual home key enters the controllable interface state, namely, the current page of the screen is switched to the target page in the opposite direction of any one of the up, down, left and right directions. The control of the display area of the screen is realized through the entity home key of the operation bar of the control screen or through controlling the virtual home key of the screen, the defects of mistakenly touching the screen and shielding the screen are avoided, other uses of a user are not influenced, the operability is high, and the use convenience is good.
In one embodiment, the step S120 further optionally includes: sliding the entity home key or the virtual home key once from left to right to slide the display area of the screen to right by one page, namely switching the current page to the target page from left to right by one page; or sliding the entity home key or the virtual home key once from right to left to slide the display area of the screen one page to left, namely switching the current page to the target page one page to right; or sliding the entity home key or the virtual home key once from top to bottom to slide the screen down by one page, namely switching the current page up to one page to the target page; or sliding the entity home key or the virtual home key from bottom to top once to make the screen slide upwards by one page, namely switching the current page downwards by one page to the target page. Through the mode of controlling of the entity home key or the virtual home key of the operation panel of sliding screen below from top to bottom and from left to right, can realize switching about from top to bottom of the display area of screen very conveniently, not only can not take place the mistake because of directly controlling the screen and touch, shelter from the drawback that influences normal use such as screen, but also can improve and use the convenience, promote user's use and experience, and use flexibility good, the commonality is strong.
Through a large number of tests, the technical scheme of the embodiment is adopted, the operation of the operation bar in the controllable interface state can be realized, the control of the display area of the screen (such as a mobile phone screen) can be realized, the limitation that a user can only slide up and down, left and right in the display area of the screen to switch pages (namely display pages) in the prior art can be further solved, the problems that the user can mistakenly touch other clickable places when the display area of the screen slides and the user finger can shield partial display contents on the screen when sliding on the screen to influence the use of the user are solved, the use of the user is more convenient, and the user experience can be greatly improved.
According to an embodiment of the present invention, there is also provided a screen manipulation apparatus of a touch screen corresponding to the screen manipulation method of the touch screen. Referring to fig. 3, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The screen manipulation device of the touch screen includes: an interface entry unit 102 and a screen manipulation unit 104.
In one embodiment, the interface entering unit 102 is configured to enter a state of a manipulatable interface (e.g., the manipulatable interface 200) of the screen in an unlocked state of the screen. The specific function and processing of the interface entry unit 102 are shown in step S110. The screen is controlled through the operation bar in the controllable interface state, other clickable places or other buttons of the screen cannot be touched by mistake, the display area of the screen is not shielded, the operation mode is simple and reliable, and the universality is high.
Preferably, the interface entry unit 102 includes: a condition acquisition module 1022 and an interface initiation module 1024.
In one embodiment, the condition obtaining module 1022 is configured to determine whether the screen is in an unlocked state; and if the screen is in the unlocking state, acquiring the starting condition of the controllable interface state. The specific functions and processes of the condition obtaining module 1022 are shown in step S210. The starting condition of the controllable interface state is obtained to enter the controllable interface state, more choices can be used for a user, the user can operate according to the starting condition when needing to operate through the controllable interface state, and the use convenience and flexibility are good; in addition, whether the user can enter the controllable interface state is judged by acquiring the starting condition, so that the operation of entering the controllable interface state is high in reliability and good in accuracy.
Wherein, the starting condition of the controllable interface state comprises: and pressing the entity home key of the screen for a duration longer than a first preset duration, and/or quickly double-clicking the entity home key or the virtual home key of the screen.
The following further describes a specific structure of the condition obtaining module 1022 with reference to a schematic structural diagram of an embodiment of the condition obtaining module in the apparatus of the present invention shown in fig. 4. The condition obtaining module 1022, optionally includes: a hold-on duration detection sub-module 10222 and a time interval detection sub-module 10224.
In an example, the hold duration detection sub-module 10222 is configured to detect a duration of pressing the entity home key (e.g., the entity home key 204) of the screen, compare the duration with a first preset duration to determine whether the duration is longer than the first preset duration, if so, obtain a starting condition that the duration of pressing the entity home key of the screen is longer than the first preset duration, and enter a controllable interface state of the screen. The method and the device have the advantages that the duration of pressing duration of the user, namely the pressing duration, is detected when the user presses the entity home key, so that the starting condition that the pressing duration is greater than a first preset duration is obtained, the operation mode is flexible and reliable, and the use convenience of the user is good.
The entity home key refers to an entity main key (home key) at an operation bar below a screen (for example, a mobile phone screen).
In an example, the time interval detection submodule 10224 is configured to detect a time interval between double-clicking an entity home key or a virtual home key of the screen and double-clicking two times of the double-clicking, compare the time interval with a second preset time length to determine whether the time interval is smaller than the second preset time length, and if so, obtain a starting condition that the entity home key or the virtual home key of the screen is double-clicked quickly, and enter a controllable interface state of the screen. The double-click speed of the user is detected when the user quickly double-clicks the virtual home key, so that the starting condition that the time interval between two clicks is smaller than the second preset time length is obtained, the operation mode is simple and convenient, more flexible selection choices are provided for the user, and the user friendliness is good.
The virtual home key refers to any place where the screen (for example, a mobile phone screen) can float, and operations on the screen can be executed through the virtual home key, for example: open applications that the user commonly uses, go back to home screen, lock screen, open application list of recent task switch, and so on.
Preferably, the second preset duration is far shorter than the first preset duration. The second preset time is set to be far shorter than the first preset time, so that starting conditions of entering the controllable interface state through the entity home key and entering the controllable interface state through the virtual home key are distinguished more obviously, a user can conveniently and flexibly select a more convenient mode to enter the controllable interface state according to actual use requirements and response conditions of corresponding operation, and the humanization is good.
In one embodiment, the interface launching module 1024 is configured to enter the controllable interface state based on the launching condition to allow the control bar to be manipulated. The specific functions and processes of the interface starting module 1024 are shown in step S220. When the current operation of the user meets the preset starting condition, the user is allowed to enter the controllable interface state, the operation on the screen is realized through the control on the operation bar, the defects that the use effect and the use experience are influenced due to the fact that the user touches and shades the screen by mistake when directly controlling the screen are avoided, and then the use of the user is more convenient and the user experience is better.
In an embodiment, the screen manipulation unit 104 is configured to, in the state of the manipulable interface, implement page switching manipulation in four directions, namely, up, down, left, and right directions of a display area of the screen by manipulating a home key of the screen; wherein the home key is located outside the display area (for example, the display area 202) of the screen. The detailed functions and processes of the screen manipulation unit 104 are shown in step S120. Through under the controllable mode at controllable interface state, according to the user demand to realize the control demand to the display area of screen through controlling to the operation bar, the operation flexibility is good, and the reliability is high, and user experience can promote greatly.
Preferably, the screen manipulation unit 104 includes: the operation bar manipulation module 1042.
In an example, the operation bar manipulation module 1042 is configured to implement sliding of a display area of the screen to a set direction by operating the entity home key of the operation bar when the entity home key enters the controllable interface state or by manipulating the virtual home key of the screen when the virtual home key enters the controllable interface state, that is, switching a current page of the screen to a target page in an opposite direction of any one of the up, down, left, and right directions. The control of the display area of the screen is realized through the entity home key of the operation bar of the control screen or through controlling the virtual home key of the screen, the defects of mistakenly touching the screen and shielding the screen are avoided, other uses of a user are not influenced, the operability is high, and the use convenience is good.
The following further describes a specific structure of the operation bar manipulation process of the operation bar manipulation module 1042, with reference to the schematic structural diagram of an embodiment of the operation bar manipulation module in the apparatus of the present invention shown in fig. 5. The operation bar manipulation module 1042 optionally includes: a left page switch sub-module 10422, a right page switch sub-module 10424, an up page switch sub-module 10426, and a down page switch sub-module 10428.
In an example, the page left switching sub-module 10422 is configured to slide the entity home key or the virtual home key once from left to right, so as to slide the display area of the screen one page to right, that is, switch the current page one page to the target page left.
In an example, the page right switching sub-module 10424 is configured to slide the entity home key or the virtual home key once from right to left, so as to slide the display area of the screen one page to left, that is, switch the current page one page to the target page right.
In an example, the on-page switching sub-module 10426 is configured to slide the physical home key or the virtual home key once from top to bottom, so as to slide the screen one page down, that is, switch the current page one page up to the target page.
In an example, the page down-switching sub-module 10428 is configured to slide the physical home key or the virtual home key from bottom to top once, so that the screen slides up by one page, that is, the current page is switched down by one page to the target page.
From this, through the mode of controlling of the entity home key or the virtual home key of the screen below operation panel of sliding from top to bottom left and right, can realize switching from top to bottom left and right sides to the display area of screen very conveniently, not only can not take place the mistake because of directly controlling the screen and touch, shelter from the drawback that influences normal use such as screen, but also can improve the use convenience, promote user's use and experience, and use flexibility good, the commonality is strong.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 2, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of tests, the technical scheme of the invention can realize that a user can control the display area of the screen to slide and page up, down, left and right on the operation bar (namely the non-display area part of the screen) below the screen (such as a mobile phone screen) so as to solve the problem that the user can mistakenly touch a certain clickable button on the screen or can shield the content on the screen when the user needs to slide the page, thus the user experience can be better met, and the user experience is not unfriendly caused by the problem of mistakenly touching or shielding the content on the screen.
According to the embodiment of the invention, the mobile terminal corresponding to the screen control device of the touch screen is also provided. The mobile terminal includes: the screen control device of the touch screen is provided.
Preferably, the mobile terminal is a mobile phone, in particular a smartphone.
For example: referring to the examples shown in fig. 6 and 7, when the mobile terminal of the present embodiment is used, for example, a mobile phone, a user can control the operation bar below the screen of the mobile phone, and further control the page switching by sliding in the up, down, left, and right directions of the screen, so that the experience of the user in sliding the page can be optimized. The specific operation steps and implementation effects are as follows:
step one, the mobile terminal of the user is required to be in an unlocked state, and the user places a finger on an entity home key for a plurality of seconds in the unlocked state.
And step two, if the second number is larger than the preset second number, the user can be in the controllable interface state of the screen, otherwise, the user still fails to meet the condition of the controllable interface state.
Alternatively, in the unlocked state of the mobile terminal, there may be a plurality of alternative ways for the user to enter the state of the controllable interface state, and in this embodiment, it is listed that the finger is placed on the physical home key for several seconds, or the finger can be quickly double-clicked on the virtual home key. The quick double-click refers to touching a virtual home key or an entity home key at a certain frequency.
If the controllable interface state is entered by double-clicking the virtual home key, page switching control in the up, down, left and right directions of the display area of the screen is realized by the virtual home key. If the controllable interface state is entered by double-clicking the entity home key, page switching operation in four directions of up, down, left and right of the display area of the screen is realized by the entity home key.
Step three, after the user meets the conditions, when the finger of the user slightly slides from left to right on the entity home key or the virtual home key, the user wants to cut the page of the screen to the left by one page, and the screen can slide to the left by one page, so that the effect of the user as sliding the page to the left in the screen is simulated; when the finger of the user slides slightly from right to left on the entity home key or the virtual home key, the user wants to cut the page of the screen to the right by one page, and the screen can slide to the right by one page, so that the effect of the user as sliding the page to the right in the screen is simulated; when the finger of the user slightly slides from bottom to top on the entity home key or the virtual home key, the user wants to cut the page of the screen up by one page, and the screen can slide upwards by one page, so that the effect of the user sliding the page in the screen is simulated; when the user's finger slightly slides down from top to bottom on the physical home key or the virtual home key, the user wants to cut the page of the screen down by one page, and the screen can slide down by one page, so that the effect of the user sliding the page in the screen is simulated.
Since the processes and functions implemented by the terminal of this embodiment substantially correspond to the embodiments, principles and examples of the devices shown in fig. 3 to fig. 5, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention can realize the function of switching pages by sliding the screen in four directions of up, down, left and right by a user through the operation bar of the finger below the screen of the mobile terminal (such as a mobile phone), the operation mode is simple and convenient, the reliability is high, and the use convenience and the user experience can be greatly improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.