CN113934394B - Method, device and terminal equipment for realizing memory display in display screen - Google Patents
Method, device and terminal equipment for realizing memory display in display screen Download PDFInfo
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- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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Abstract
The invention provides a method, a device and terminal equipment for realizing memory display in a display screen. The method comprises the following steps: detecting a display mode of a display screen; the display mode is synchronous display or asynchronous display; if the display mode of the display screen is asynchronous display, keeping the display content of the display screen unchanged, and displaying the target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display; the target writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display. The invention can realize asynchronous transmission of blackboard writing content, and enable the intelligent blackboard and the display screen to display different content, thereby realizing multi-content display teaching.
Description
Technical Field
The invention relates to the technical field of intelligent blackboards, in particular to a method, a device and terminal equipment for realizing memory display in a display screen.
Background
The intelligent blackboard can also be called as an intelligent classroom interactive blackboard, and can combine a traditional handwriting blackboard with multimedia equipment by adopting a touch technology, and display blackboard writing content on a display screen, so that students can watch conveniently.
At present, the blackboard writing content of the intelligent blackboard can be transmitted to the display screen in real time for display, so that the blackboard writing content of the intelligent blackboard is consistent with the display content of the display screen. However, this way of displaying content is limited, resulting in the inability to realize multi-content display instruction.
Disclosure of Invention
The embodiment of the invention provides a method, a device and terminal equipment for realizing memory display in a display screen, which are used for solving the problem that the prior art cannot realize multi-content display teaching.
In a first aspect, an embodiment of the present invention provides a method for implementing memory display in a display screen, including:
Detecting a display mode of a display screen; the display mode is synchronous display or asynchronous display;
If the display mode of the display screen is asynchronous display, keeping the display content of the display screen unchanged, and displaying the target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display;
The target writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display.
In one possible implementation manner, when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for implementing memory display in the display screen further includes:
receiving target blackboard writing handwriting coordinate information sent by an intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content;
the target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
In one possible implementation manner, if the display mode of the display screen is asynchronous display, the method for implementing memory display in the display screen further includes:
Receiving real-time blackboard writing handwriting coordinate information sent by an intelligent blackboard, and converting the real-time blackboard writing handwriting coordinate information into real-time blackboard writing content;
the target blackboard writing content comprises all real-time blackboard writing contents when the display mode of the display screen is asynchronous display.
In one possible implementation manner, if the display mode of the display screen is asynchronous display, the method for implementing memory display in the display screen further includes:
Receiving real-time blackboard writing handwriting coordinate information sent by an intelligent blackboard;
when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for realizing memory display in the display screen further comprises the following steps:
And converting all received real-time blackboard writing handwriting coordinate information into target blackboard writing content.
In one possible implementation, displaying target blackboard writing content in a display screen includes:
if the position of the target blackboard writing content is overlapped with the position of the first display content, only displaying the target blackboard writing content in the display screen;
If the position of the target blackboard-writing content is not overlapped with the position of the first display content, the target blackboard-writing content and the first display content are displayed simultaneously in the display screen, or only the target blackboard-writing content is displayed in the display screen;
The first display content is displayed on the display screen when the display mode of the display screen is asynchronous display.
In one possible implementation manner, after detecting the display manner of the display screen, the method for implementing memory display in the display screen further includes:
if the display mode of the display screen is synchronous display, the display content of the display screen is kept consistent with the blackboard writing content of the intelligent blackboard.
In a second aspect, an embodiment of the present invention provides a device for implementing memory display in a display screen, including:
the detection module is used for detecting the display mode of the display screen; the display mode is synchronous display or asynchronous display;
The asynchronous display module is used for keeping the display content of the display screen unchanged if the display mode of the display screen is asynchronous display, and displaying the target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display;
The target writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display.
In one possible implementation, the asynchronous display module is further configured to:
when the display mode of the display screen is switched from asynchronous display to synchronous display, receiving target blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content;
the target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
In a third aspect, an embodiment of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method for implementing a memory display in a display screen as described above in the first aspect or any one of the possible implementations of the first aspect when the processor executes the computer program.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of a method of implementing a memory display in a display screen as described above in the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the invention provides a method, a device and terminal equipment for realizing memory display in a display screen, which are used for keeping the display content of the display screen unchanged when the display mode of the display screen is asynchronous display, displaying target blackboard writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display, wherein the target writing content is newly added blackboard writing content of an intelligent blackboard when the display mode of the display screen is asynchronous display, realizing asynchronous transmission of the blackboard writing content, and enabling the intelligent blackboard and the display screen to display different contents, thereby realizing multi-content display teaching.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for implementing memory display in a display screen according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for implementing memory display in a display screen according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a neighborhood of sampling points according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a left neighborhood point and a right neighborhood point of a sampling point in a longitudinal blackboard writing handwriting coordinate set provided by an embodiment of the invention;
FIG. 5 is a schematic diagram of an upper neighborhood point and a lower neighborhood point of a sampling point in a transverse blackboard writing handwriting coordinate set according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a device for implementing memory display in a display screen according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a system for implementing memory display in a display screen according to an embodiment of the present invention is shown, where the system includes a smart blackboard and a display screen.
The writer can write the blackboard writing content on the intelligent blackboard, the intelligent blackboard can acquire handwriting coordinate information of the blackboard writing content, and the acquired handwriting coordinate information is sent to the display screen. The handwriting coordinate information may include a series of coordinates arranged in a time sequence.
The display screen can convert the received handwriting coordinate information into corresponding blackboard writing content and display the blackboard writing content, so that the display screen can display the blackboard writing content of the intelligent blackboard, and all people in the teaching room can conveniently check the blackboard writing content.
The number of the display screens can be one or a plurality, and when the number of the display screens is a plurality of the display screens, the display screens can be arranged at different positions in front and back in a classroom, so that all people in the classroom can clearly view blackboard writing contents.
Referring to fig. 2, a flowchart of a method for implementing memory display in a display screen according to an embodiment of the present invention is shown. The execution main body of the method for realizing memory display in the display screen can be terminal equipment, and the terminal equipment can be the display screen.
In one possible implementation, the intelligent blackboard and the display screen are connected through a terminal device, and communication between the intelligent blackboard and the display screen is required to pass through the terminal device, in this way, the terminal device can control display content of the display screen and the like, and the terminal device can be a computing device such as a background server and the like.
Referring to fig. 1, the method for implementing memory display in the display screen is described in detail as follows:
in S101, detecting a display mode of a display screen; the display mode is synchronous display or asynchronous display.
In this embodiment, the display modes of the display screen may be classified into synchronous display and asynchronous display.
The synchronous display indicates that the display content of the display screen is consistent with the current blackboard writing content of the intelligent blackboard, namely what content is written on the intelligent blackboard, and the display screen displays what content.
The display content of the display screen is not consistent with the current blackboard writing content of the intelligent blackboard, when the blackboard writing content of the intelligent blackboard is changed during asynchronous display, the display content of the display screen is unchanged, and when the asynchronous display is converted into synchronous display, the display screen can display the newly added blackboard writing content of the intelligent blackboard during the asynchronous display.
The embodiment can set the synchronous display control and the asynchronous display control on the display screen and/or set the synchronous display control and the asynchronous display control on the intelligent blackboard. The writer may implement synchronous display by selecting a synchronous display control or asynchronous display by selecting an asynchronous display control.
In S102, if the display mode of the display screen is asynchronous display, keeping the display content of the display screen unchanged, and when the display mode of the display screen is switched from asynchronous display to synchronous display, displaying the target blackboard-writing content in the display screen;
The target writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display.
In this embodiment, during the asynchronous display period, the display content of the display screen remains unchanged, and when the display mode of the display screen is switched from asynchronous display to synchronous display, the display content of the display screen is displayed according to the change content of the intelligent blackboard, that is, the display screen can display the blackboard writing content newly added during the asynchronous display period when the display mode of the display screen is the display mode of the intelligent blackboard.
According to the embodiment, when the display mode of the display screen is asynchronous display, the display content of the display screen is kept unchanged, and when the display mode of the display screen is switched from asynchronous display to synchronous display, the target blackboard writing content is displayed in the display screen, and when the display mode of the display screen is asynchronous display, the target writing content is newly added blackboard writing content of the intelligent blackboard, so that asynchronous transmission of the blackboard writing content can be realized, different contents can be displayed on the intelligent blackboard and the display screen, and multi-content display teaching can be realized.
The multi-content display teaching can be understood as a teaching mode when one display screen is insufficient to display all teaching contents corresponding to one knowledge point when the teaching contents corresponding to the knowledge point are more. For example, when a teacher explains a knowledge point, more content needs to be written, however, one display screen cannot display all blackboard writing content corresponding to the knowledge point, and at this time, the intelligent blackboard and the display screen can be combined to display all blackboard writing content corresponding to the knowledge point. For example, synchronous display can be selected first, so that the content of the intelligent blackboard is consistent with the display content of the display screen, asynchronous display is selected when the display screen is full, at this time, the display content of the display screen is unchanged, the intelligent blackboard can erase the current content and re-write new content, and therefore the knowledge point can be explained by combining the display content of the display screen and the blackboard writing content of the intelligent blackboard, and multi-content display teaching is realized.
In one possible implementation, when the display mode of the display screen is switched from asynchronous display to synchronous display, the blackboard writing content of the current intelligent blackboard is displayed in the display screen.
And during the asynchronous display mode of the display screen, if the blackboard writing content of the intelligent blackboard is covered and written at least once, namely after the blackboard writing content of the intelligent blackboard is fully written, erasing, and restarting writing on the intelligent blackboard, namely covering and writing, wherein at the moment, the display screen cannot display all the blackboard writing content of the intelligent blackboard, and only the current blackboard writing content of the intelligent blackboard can be displayed.
In some embodiments, in S102, when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for implementing memory display in the display screen further includes:
receiving target blackboard writing handwriting coordinate information sent by an intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content;
the target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
In this embodiment, the intelligent blackboard can acquire the handwriting coordinates of the blackboard, but during the asynchronous display period, the intelligent blackboard does not transmit the handwriting coordinates to the display screen, and until the display mode of the display screen is switched from asynchronous display to synchronous display, all the handwriting coordinates of the blackboard writing (i.e. the target handwriting coordinate information) acquired during the asynchronous display period are transmitted to the display screen.
The display screen does not receive information of the intelligent blackboard during asynchronous display mode of the display screen, receives target blackboard writing handwriting coordinate information sent by the intelligent blackboard when the display mode of the display screen is switched from asynchronous display to synchronous display, and converts the target blackboard writing handwriting coordinate information into target blackboard writing content by adopting an existing method or a method provided by the following, and displays the target blackboard writing content in the display screen.
In one possible implementation, the target writing coordinates information includes writing coordinates of a plurality of sampling points; converting the target writing handwriting coordinate information into target writing content can comprise the following steps of:
step one: and dividing the sampling points according to the writing handwriting coordinates corresponding to the sampling points to obtain a transverse writing handwriting coordinate set and a longitudinal writing handwriting coordinate set.
The intelligent blackboard is provided with a sampling device, the sampling device can collect relevant information of the blackboard writing handwriting in real time according to time sequence, and then the collected relevant information of the blackboard writing handwriting is sent to the display screen through communication. The relevant information of the writing script may be writing script coordinates of a plurality of sampling points having a time sequence relationship.
For an intelligent blackboard, the blackboard writing handwriting sampling can be performed during the writing process of a writer. If the distance between the writing tool and the blackboard surface exceeds a preset induction threshold, not sampling; and if the distance between the writing tool and the blackboard surface does not exceed the preset sensing threshold value, sampling is carried out. The sampling can obtain the handwriting coordinates of a plurality of sampling points with time sequence information.
Optionally, the writing on board can be divided into transverse writing and longitudinal writing, and correspondingly, writing on board coordinate divisions corresponding to the plurality of sampling points can be also divided into transverse writing on board coordinate sets and longitudinal writing on board coordinate sets.
The writing handwriting coordinates corresponding to the sampling points can be judged to belong to the transverse writing handwriting coordinates or the longitudinal writing handwriting coordinates according to the time sequence, the horizontal coordinates and the vertical coordinates among the writing handwriting coordinates. The set of lateral writing handwriting coordinates may include zero or at least one lateral writing handwriting coordinate and the set of longitudinal writing handwriting coordinates may include zero or at least one longitudinal writing handwriting coordinate.
For example, the writing script "three" may include only lateral writing script coordinates, the writing script "Sichuan" may include only longitudinal writing script coordinates, and the writing script "rich" may include both lateral writing script coordinates and longitudinal writing script coordinates. The rest of the blackboard writing handwriting is the same.
Step two: and determining a left neighborhood point, a right neighborhood point, an upper neighborhood point and a lower neighborhood point corresponding to each sampling point according to the handwriting coordinates corresponding to the sampling point.
Fig. 3 is a schematic diagram of a neighborhood of sampling points according to the present embodiment. As shown in fig. 3, the sampling point a includes a left neighborhood point A1, a right neighborhood point A2, an upper neighborhood point A3, and a lower neighborhood point A4.
Specifically, a sampling point can be expanded into a neighborhood, an upper neighborhood point and a lower neighborhood point are determined according to the abscissa of the handwriting coordinates corresponding to the sampling point, and a left neighborhood point and a right neighborhood point are determined according to the ordinate of the handwriting coordinates corresponding to the sampling point.
Step three: and determining the longitudinal blackboard writing handwriting of the blackboard writing handwriting according to the left neighborhood point and the right neighborhood point of the sampling point in the longitudinal blackboard writing handwriting coordinate set.
Fig. 4 is a schematic diagram of a left neighborhood point and a right neighborhood point of a sampling point in a vertical blackboard writing handwriting coordinate set provided in this embodiment. As shown in FIG. 4, the vertical set of blackboard writing handwriting coordinates includes a sampling point A and a sampling point B. For the sampling point A, the sampling point A comprises a left neighborhood point A1 and a right neighborhood point A2; for sample point B, it includes a left neighborhood point B1 and a right neighborhood point B2.
For example, assuming that the longitudinal handwriting coordinate set only includes the sampling point a and the sampling point B, the left neighborhood point A1 and the left neighborhood point B1 may be connected, the right neighborhood point B1 and the right neighborhood point B2 may be connected, the left neighborhood point A1 and the right neighborhood point A2 may be connected, and the left neighborhood point B1 and the right neighborhood point B2 may be connected, so as to form a simple closed area, and the handwriting simulating the sampling point a and the sampling point B may be implemented without considering the falling points of the beginning pen-starting and the end pen-front.
Step four: and determining the transverse blackboard writing handwriting of the blackboard writing handwriting according to the upper neighborhood point and the lower neighborhood point of the sampling points in the transverse blackboard writing handwriting coordinate set.
Fig. 5 is a schematic diagram of an upper neighborhood point and a lower neighborhood point of a sampling point in a horizontal blackboard writing handwriting coordinate set provided in this embodiment. As shown in fig. 5, the transverse blackboard writing coordinate set includes a sampling point C and a sampling point D. For sample point C, it includes an upper neighborhood point C3 and a lower neighborhood point C4; for sample point D, it includes an upper neighborhood point D3 and a lower neighborhood point D4.
For example, assuming that the horizontal handwriting coordinate set only includes the sampling point C and the sampling point D, the upper neighborhood point C3 and the upper neighborhood point D3 may be connected, the lower neighborhood point C4 and the lower neighborhood point D4 may be connected, the upper neighborhood point C3 and the lower neighborhood point C4 may be connected, and the upper neighborhood point D3 and the lower neighborhood point D4 may be connected, so as to form a simple closed area, and the handwriting simulating the sampling point C and the sampling point D may be implemented without considering the falling points of the beginning pen-starting and the end pen-front.
Step five: and determining target writing contents according to the longitudinal writing handwriting and the transverse writing handwriting.
In one possible implementation, the writing handwriting coordinates are denoted as (x i,yi), where x i、yi represents the abscissa and ordinate, respectively, of the writing handwriting corresponding to the i-th sampling point;
Determining a left neighborhood point, a right neighborhood point, an upper neighborhood point and a lower neighborhood point corresponding to the sampling point according to the handwriting coordinates corresponding to the sampling point, including:
for the writing coordinates (x i,yi) of the blackboard writing The left neighborhood point as the ith sampling point willThe right neighborhood point as the i-th sampling point will/>The next neighborhood point as the ith sampling point willAn upper neighborhood point serving as an ith sampling point; wherein w is a first preset neighborhood positive value, and h is a second preset neighborhood positive value.
Optionally, the first preset neighborhood positive value w and the second preset neighborhood positive value h may be the same or different, and specifically set according to actual needs. Each sampling point may correspond to a first neighborhood positive value w and a second neighborhood positive value h, or a plurality of sampling points may correspond to the same first neighborhood positive value w and the same second neighborhood positive value h.
In one possible implementation manner, the third step may include:
and connecting left neighborhood points of every two adjacent sampling points in the longitudinal blackboard writing handwriting coordinate set by utilizing a Bezier curve, and connecting right neighborhood points of the two adjacent sampling points in the random time sequence to obtain the longitudinal blackboard writing handwriting of the blackboard writing handwriting.
Optionally, whether sampling points in the longitudinal blackboard writing handwriting coordinate set are adjacent can be determined according to the time sequence, for two adjacent sampling points, left neighborhood points of the two sampling points can be connected, and right neighborhood points of the two sampling points can be connected. And connecting all sampling points in the longitudinal blackboard writing handwriting coordinate set in the manner, and finally obtaining the longitudinal blackboard writing handwriting.
In one possible implementation, before connecting the left neighborhood point of every arbitrary two time-sequence adjacent sampling points in the longitudinal blackboard writing handwriting coordinate set by using the bezier curve and connecting the right neighborhood points of the arbitrary two time-sequence adjacent sampling points, the method further includes:
Judging whether any two sampling points in the longitudinal blackboard writing handwriting coordinate set are adjacent or not;
if the absolute value of the time sequence difference of the two sampling points is smaller than or equal to a first preset threshold value, judging that the two sampling points are adjacent.
Optionally, if the absolute value of the time sequence difference between the two sampling points is greater than a first preset threshold, it is determined that the two sampling points are not adjacent. Whether or not adjacent can be judged by the absolute value of the difference of the time sequences of the two sampling points.
In one possible implementation manner, the step four may include:
And connecting the upper neighborhood points of every any two sampling points in the transverse blackboard writing handwriting coordinate set by utilizing a Bezier curve, and connecting the lower neighborhood points of the sampling points adjacent to any two time sequences to obtain the transverse blackboard writing handwriting of the blackboard writing handwriting.
Optionally, whether sampling points in the handwriting coordinate set of the transverse blackboard writing are adjacent can be determined according to the time sequence, and for two adjacent sampling points, upper neighborhood points of the two sampling points can be connected, and lower neighborhood points of the two sampling points can be connected. And connecting all sampling points in the transverse blackboard writing handwriting coordinate set in the mode, and finally obtaining the transverse blackboard writing handwriting.
In one possible implementation manner, the method further includes, before connecting the upper neighborhood points of every arbitrary two sampling points adjacent in time sequence in the horizontal blackboard writing handwriting coordinate set and connecting the lower neighborhood points of the arbitrary two sampling points adjacent in time sequence by using a bezier curve:
Judging whether any two sampling points in the transverse blackboard writing handwriting coordinate set are adjacent or not;
and if the absolute value of the time sequence difference of the two sampling points is smaller than or equal to a second preset threshold value, judging that the two sampling points are adjacent.
Optionally, if the absolute value of the time sequence difference of the two sampling points is greater than a second preset threshold, it is determined that the two sampling points are not adjacent.
In one possible implementation manner, the fifth step may include:
determining a first sampling point and a last sampling point of the blackboard writing handwriting according to the time sequences corresponding to the sampling points;
Generating a first semi-closed area according to the left neighborhood point and the right neighborhood point of the first sampling point; the first semi-closed area is used for representing a pen starting area of a starting point of the blackboard writing handwriting;
Generating a second semi-closed area according to the left neighborhood point and the right neighborhood point of the last sampling point; the second semi-closed area is used for representing a stroke end area of an end point of the blackboard writing handwriting;
Generating a closed handwriting area of the writing on the basis of the first semi-closed area and the second semi-closed area by combining the longitudinal writing on the blackboard and the transverse writing on the blackboard;
and filling the closed handwriting area to obtain the target writing content.
Alternatively, the specific process may be:
First, in the first sampling point of each blackboard writing handwriting, a semicircular arc can be generated according to the left neighborhood point and the right neighborhood point of the sampling point, or a semicircular arc can be generated according to the upper neighborhood point and the lower neighborhood point of the sampling point.
Secondly, at the last sampling point of each blackboard writing handwriting, a semicircular arc can be generated according to the left neighborhood point and the right neighborhood point of the sampling point, or a pen-front region can be generated according to the upper neighborhood point and the lower neighborhood point of the sampling point. Wherein the front area corresponds to the trend of the blackboard writing handwriting.
Thirdly, a closed handwriting area of the blackboard writing handwriting is generated by combining the semicircular arc area, the pen point area and the longitudinal blackboard writing handwriting and the transverse blackboard writing handwriting.
Fourth, the closed handwriting area is filled, and target blackboard writing content is obtained.
In some embodiments, in S102, if the display mode of the display screen is asynchronous display, the method for implementing memory display in the display screen further includes:
Receiving real-time blackboard writing handwriting coordinate information sent by an intelligent blackboard, and converting the real-time blackboard writing handwriting coordinate information into real-time blackboard writing content;
the target blackboard writing content comprises all real-time blackboard writing contents when the display mode of the display screen is asynchronous display.
In this embodiment, during asynchronous display, the intelligent blackboard may acquire its handwriting coordinates in real time, and in this embodiment, the handwriting coordinates acquired in real time by the intelligent blackboard are referred to as real-time handwriting coordinate information, and the intelligent blackboard acquires the real-time handwriting coordinate information and then immediately transmits the real-time handwriting coordinate information to the display screen.
During asynchronous display, when the display screen receives real-time writing handwriting coordinate information, the real-time writing handwriting coordinate information can be converted into real-time writing contents, and when the display mode of the display screen is switched from asynchronous display to synchronous display, target writing contents are displayed in the display screen. The target blackboard writing content includes all real-time blackboard writing contents during the asynchronous display mode of the display screen.
The method for converting the real-time writing handwriting coordinate information into the real-time writing content can refer to the method for converting the target writing handwriting coordinate information into the target writing content, and is not repeated.
In some embodiments, in S102, if the display mode of the display screen is asynchronous display, the method for implementing memory display in the display screen further includes:
Receiving real-time blackboard writing handwriting coordinate information sent by an intelligent blackboard;
when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for realizing memory display in the display screen further comprises the following steps:
And converting all received real-time blackboard writing handwriting coordinate information into target blackboard writing content.
In this embodiment, during asynchronous display, the intelligent blackboard may acquire its handwriting coordinates in real time, and in this embodiment, the handwriting coordinates acquired in real time by the intelligent blackboard are referred to as real-time handwriting coordinate information, and the intelligent blackboard acquires the real-time handwriting coordinate information and then immediately transmits the real-time handwriting coordinate information to the display screen.
And during asynchronous display, the display screen can receive real-time blackboard writing handwriting coordinate information sent by the intelligent blackboard, and when the display mode of the display screen is switched from asynchronous display to synchronous display, the prior method is adopted to convert all received real-time blackboard writing handwriting coordinate information into target blackboard writing content, and the target blackboard writing content is displayed in the display screen.
The method for converting all real-time writing handwriting coordinate information into the target writing content can refer to the method for converting the target writing handwriting coordinate information into the target writing content, and is not repeated.
In some embodiments, in S102, when the display mode of the display screen is switched from asynchronous display to synchronous display, displaying the target blackboard writing content on the display screen may include:
if the position of the target blackboard writing content is overlapped with the position of the first display content, only displaying the target blackboard writing content in the display screen;
If the position of the target blackboard-writing content is not overlapped with the position of the first display content, the target blackboard-writing content and the first display content are displayed simultaneously in the display screen, or only the target blackboard-writing content is displayed in the display screen;
The first display content is displayed on the display screen when the display mode of the display screen is asynchronous display.
In this embodiment, if there is a positional overlap between the newly added blackboard writing content (i.e., the target blackboard writing content) of the smart blackboard during the asynchronous display and the display content (i.e., the first display content) of the display screen during the asynchronous display, at this time, if the target blackboard writing content is displayed on the basis of the first display content, a part of the content is unclear, and therefore, in this case, when the display mode of the display screen is switched from the asynchronous display to the synchronous display, the display screen displays only the target blackboard writing content.
If there is no position overlapping between the target blackboard-writing content and the first display content, there is no unclear problem, so when the display mode of the display screen is switched from asynchronous display to synchronous display, the display screen can only display the target blackboard-writing content, or can display the target blackboard-writing content and the first display content simultaneously.
In this embodiment, the existence of overlapping of the position of the target blackboard-writing content and the position of the first display content means that when the target blackboard-writing content and the first display content are displayed on the display screen at the same time, part or all of the content of the target blackboard-writing content overlaps the first display content.
In some embodiments, after S101, the method for implementing memory display in the display screen further includes:
if the display mode of the display screen is synchronous display, the display content of the display screen is kept consistent with the blackboard writing content of the intelligent blackboard.
In this embodiment, if the display mode of the display screen is synchronous display, the display content of the display screen is kept consistent with the blackboard writing content of the intelligent blackboard, that is, the display content of the display screen changes along with the change of the blackboard writing content of the intelligent blackboard.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The following are device embodiments of the invention, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 6 is a schematic structural diagram of a device for implementing memory display in a display screen according to an embodiment of the present invention, and for convenience of explanation, only the portions relevant to the embodiment of the present invention are shown, which are described in detail below:
As shown in fig. 6, the apparatus 30 for realizing memory display in a display screen includes: a detection module 31 and an asynchronous display module 32.
The detection module 31 is used for detecting the display mode of the display screen; the display mode is synchronous display or asynchronous display;
the asynchronous display module 32 is configured to keep the display content of the display screen unchanged if the display mode of the display screen is asynchronous display, and display the target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display;
The target writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display.
In one possible implementation, the asynchronous display module 32 is further configured to:
when the display mode of the display screen is switched from asynchronous display to synchronous display, receiving target blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content;
the target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
In one possible implementation, the asynchronous display module 32 is further configured to:
if the display mode of the display screen is asynchronous display, receiving real-time blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the real-time blackboard writing handwriting coordinate information into real-time blackboard writing content;
the target blackboard writing content comprises all real-time blackboard writing contents when the display mode of the display screen is asynchronous display.
In one possible implementation, the asynchronous display module 32 is further configured to:
and if the display mode of the display screen is asynchronous display, receiving real-time blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting all the received real-time blackboard writing handwriting coordinate information into target blackboard writing content when the display mode of the display screen is switched from asynchronous display to synchronous display.
In one possible implementation, when the display mode of the display screen is switched from asynchronous display to synchronous display, the asynchronous display module 32 is specifically configured to:
if the position of the target blackboard writing content is overlapped with the position of the first display content, only displaying the target blackboard writing content in the display screen;
If the position of the target blackboard-writing content is not overlapped with the position of the first display content, the target blackboard-writing content and the first display content are displayed simultaneously in the display screen, or only the target blackboard-writing content is displayed in the display screen;
The first display content is displayed on the display screen when the display mode of the display screen is asynchronous display.
In one possible implementation, the apparatus 30 for implementing a memory display in a display screen further includes a synchronous display module.
The synchronous display module is used for:
if the display mode of the display screen is synchronous display, the display content of the display screen is kept consistent with the blackboard writing content of the intelligent blackboard.
Fig. 7 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 7, the terminal device 4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in the memory 41 and executable on the processor 40. The steps in the method embodiment for implementing memory display in the respective display screens described above are implemented when the processor 40 executes the computer program 42, for example, S101 to S102 shown in fig. 1. Or the processor 40, when executing the computer program 42, performs the functions of the modules/units of the device embodiments described above, such as the functions of the modules/units 31-32 shown in fig. 6.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to complete the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program 42 in the terminal device 4. For example, the computer program 42 may be split into the modules/units 31 to 32 shown in fig. 6.
The terminal device 4 may be a display screen, or may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. The terminal device 4 may include, but is not limited to, a processor 40, a memory 41. It will be appreciated by those skilled in the art that fig. 7 is merely an example of the terminal device 4 and does not constitute a limitation of the terminal device 4, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the terminal device may further include an input-output device, a network access device, a bus, etc.
The Processor 40 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the terminal device 4, such as a hard disk or a memory of the terminal device 4. The memory 41 may also be an external storage device of the terminal device 4, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the terminal device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal device 4. The memory 41 is used for storing the computer program as well as other programs and data required by the terminal device. The memory 41 may also be used for temporarily storing data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by instructing related hardware by a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of the method embodiment for implementing memory display in each display screen when executed by a processor. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (10)
1. A method for implementing a memory display in a display screen, comprising:
Detecting a display mode of the display screen; the display mode is synchronous display or asynchronous display;
If the display mode of the display screen is asynchronous display, keeping the display content of the display screen unchanged, and displaying target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display;
The target blackboard writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display;
when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for realizing memory display in the display screen further comprises the following steps:
Receiving target blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content; the target writing handwriting coordinate information comprises writing handwriting coordinates of a plurality of sampling points;
The converting the target blackboard writing handwriting coordinate information into the target blackboard writing content comprises the following steps:
Dividing the sampling points according to the handwriting coordinates of the blackboard writing corresponding to the sampling points to obtain a transverse handwriting coordinate set and a longitudinal handwriting coordinate set;
for each sampling point, determining a left neighborhood point, a right neighborhood point, an upper neighborhood point and a lower neighborhood point corresponding to the sampling point according to the handwriting coordinates corresponding to the sampling point;
determining longitudinal blackboard writing handwriting of the blackboard writing handwriting according to the left neighborhood point and the right neighborhood point of the sampling point in the longitudinal blackboard writing handwriting coordinate set;
determining the transverse blackboard writing handwriting of the blackboard writing handwriting according to the upper neighborhood point and the lower neighborhood point of the sampling point in the transverse blackboard writing handwriting coordinate set;
and determining target blackboard writing content according to the longitudinal blackboard writing handwriting and the transverse blackboard writing handwriting.
2. The method for realizing memory display in a display screen according to claim 1, wherein,
The target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
3. The method for implementing memory display on a display screen according to claim 1, wherein if the display mode of the display screen is asynchronous display, the method for implementing memory display on the display screen further comprises:
Receiving real-time blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the real-time blackboard writing handwriting coordinate information into real-time blackboard writing content;
and the target blackboard writing content comprises all real-time blackboard writing contents when the display mode of the display screen is asynchronous display.
4. The method for implementing memory display on a display screen according to claim 1, wherein if the display mode of the display screen is asynchronous display, the method for implementing memory display on the display screen further comprises:
Receiving real-time blackboard writing handwriting coordinate information sent by the intelligent blackboard;
when the display mode of the display screen is switched from asynchronous display to synchronous display, the method for realizing memory display in the display screen further comprises the following steps:
And converting all received real-time blackboard writing handwriting coordinate information into the target blackboard writing content.
5. The method for implementing memory display on a display screen according to claim 1, wherein displaying the target blackboard writing content on the display screen comprises:
If the position of the target blackboard writing content is overlapped with the position of the first display content, only displaying the target blackboard writing content in the display screen;
if the position of the target blackboard writing content is not overlapped with the position of the first display content, the target blackboard writing content and the first display content are displayed simultaneously in the display screen, or only the target blackboard writing content is displayed in the display screen;
The first display content is displayed on the display screen when the display mode of the display screen is asynchronous display.
6. The method for realizing memory display on a display screen according to any one of claims 1 to 5, wherein after the detecting of the display mode of the display screen, the method for realizing memory display on the display screen further comprises:
And if the display mode of the display screen is synchronous display, keeping the display content of the display screen consistent with the blackboard writing content of the intelligent blackboard.
7. An apparatus for implementing a memory display in a display screen, comprising:
The detection module is used for detecting the display mode of the display screen; the display mode is synchronous display or asynchronous display;
The asynchronous display module is used for keeping the display content of the display screen unchanged if the display mode of the display screen is asynchronous display, and displaying the target blackboard-writing content in the display screen when the display mode of the display screen is switched from asynchronous display to synchronous display;
The target blackboard writing content is newly added blackboard writing content of the intelligent blackboard when the display mode of the display screen is asynchronous display;
the asynchronous display module is further configured to:
When the display mode of the display screen is switched from asynchronous display to synchronous display, receiving target blackboard writing handwriting coordinate information sent by the intelligent blackboard, and converting the target blackboard writing handwriting coordinate information into target blackboard writing content; the target writing handwriting coordinate information comprises writing handwriting coordinates of a plurality of sampling points;
The converting the target blackboard writing handwriting coordinate information into the target blackboard writing content comprises the following steps:
Dividing the sampling points according to the handwriting coordinates of the blackboard writing corresponding to the sampling points to obtain a transverse handwriting coordinate set and a longitudinal handwriting coordinate set;
for each sampling point, determining a left neighborhood point, a right neighborhood point, an upper neighborhood point and a lower neighborhood point corresponding to the sampling point according to the handwriting coordinates corresponding to the sampling point;
determining longitudinal blackboard writing handwriting of the blackboard writing handwriting according to the left neighborhood point and the right neighborhood point of the sampling point in the longitudinal blackboard writing handwriting coordinate set;
determining the transverse blackboard writing handwriting of the blackboard writing handwriting according to the upper neighborhood point and the lower neighborhood point of the sampling point in the transverse blackboard writing handwriting coordinate set;
and determining target blackboard writing content according to the longitudinal blackboard writing handwriting and the transverse blackboard writing handwriting.
8. The apparatus for realizing memory display in a display screen according to claim 7, wherein,
The target writing handwriting coordinate information is writing handwriting coordinate information corresponding to the target writing content.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, realizes the steps of the method of realizing a memory display in a display screen according to any of the preceding claims 1 to 6.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method of implementing a memory display in a display screen according to any of the preceding claims 1 to 6.
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| CN111651079A (en) * | 2020-05-18 | 2020-09-11 | 广州视源电子科技股份有限公司 | Handwriting display method, device, equipment and computer storage medium |
| CN111857528A (en) * | 2020-07-17 | 2020-10-30 | 上海墨案智能科技有限公司 | Handwriting recording method and device |
| CN112463012A (en) * | 2020-08-11 | 2021-03-09 | 湖北工业大学 | Method for displaying consistency of handwriting in synchronization of paper screen |
| CN113506476A (en) * | 2021-08-11 | 2021-10-15 | 广东贝安睿联信息技术有限公司 | Intelligent interconnected blackboard |
| CN113448486A (en) * | 2021-09-01 | 2021-09-28 | 广州朗国电子科技股份有限公司 | Method and device for realizing pen point of electronic whiteboard, storage medium and electronic whiteboard |
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