CN112711389A - Multi-terminal screen-loading method, device and equipment applied to electronic whiteboard - Google Patents
Multi-terminal screen-loading method, device and equipment applied to electronic whiteboard Download PDFInfo
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Abstract
The invention discloses a multi-terminal screen-loading method, a multi-terminal screen-loading device and equipment applied to an electronic whiteboard. The invention combines the display attributes of the electronic whiteboard with the respective display attributes of the multiple client terminals, provides a solution for a multi-terminal local operation screen-up scene, and particularly calculates the size of a display area corresponding to the client terminal in real time according to the display attributes of the access terminal and the electronic whiteboard, and realizes self-adaptive typesetting layout of the current display area according to the size of the display area and the real-time display condition of the whiteboard so as to synchronously adapt the local operation content of each access terminal to the respective corresponding display area on the electronic whiteboard, thereby solving the requirement of accessing the electronic whiteboard by the multiple terminals to perform local operation screen-up. The invention fully releases the application space of the electronic whiteboard, effectively expands the functional modes of the electronic whiteboard and the multi-client terminal, thereby obviously improving the use efficiency of the electronic whiteboard and improving the use experience of a user on the electronic whiteboard.
Description
Technical Field
The invention relates to the field of intelligent interactive products, in particular to a multi-terminal screen-loading method, a multi-terminal screen-loading device and multi-terminal screen-loading equipment applied to an electronic whiteboard.
Background
People have increasingly increased demands on screen-type electronic equipment, particularly in daily work communication, the screen-type electronic equipment can communicate through traditional modes such as telephones, social platform applications, e-mails and the like, and also relates to situations such as office meetings, education and teaching, skill training and the like, and the screen-type electronic product with the writing function can visually display ideas, statements, issues, explanations and the like of each user in the situations, so that the understanding of participants can be assisted, electronic format files can be conveniently formed for recording and filing, and the traditional handwritten case board books are not required to be photographed by using a mobile phone, a camera and the like, and therefore, the electronic writing tools applied to the scenes play an increasingly important role in the field of intelligent interaction products.
At present, electronic whiteboard products capable of replacing traditional whiteboards based on marker writing exist in the market, and it should be noted that the whiteboard mentioned in the present invention is not limited to white board surface, but only according to the convention of commonly referring to the industry, such hardware products capable of writing and displaying are collectively called electronic whiteboard. For example, in a certain meeting scene, an intelligent interactive all-in-one machine with a large-size screen arranged in front of a meeting room can be regarded as the whiteboard of the present invention. In addition, based on the electronic whiteboard product that is made of hardware, some manufacturers also develop a virtual whiteboard conceptually related to the electronic whiteboard that is made of hardware, that is, a whiteboard application program that can be loaded on a terminal device, for example, but not limited to a software product such as a whiteboard APP, and from the practical operation, any electronic terminal that can be loaded with the whiteboard APP can be regarded as the electronic whiteboard, for example, the intelligent interactive all-in-one machine itself has multiple functions, and when the intelligent interactive all-in-one machine is used for a meeting, the intelligent interactive all-in-one machine can be changed into the electronic whiteboard by starting the built-in whiteboard APP program.
Based on the above, the present invention focuses on that in a real application environment, an electronic whiteboard (referred to as a large-screen whiteboard) having a larger-sized screen has a single interaction function with a client terminal, because the large-screen whiteboard has a relatively wide display space, and thus the electronic whiteboard itself has the capability of accessing a plurality of client terminals and displaying the operation content of each terminal, however, the existing usage manner of the electronic whiteboard does not deeply dig the synchronous application mode of the large-screen whiteboard and the client terminals, and still based on the relatively independent relationship between the large-screen whiteboard and the client terminals, a traditional interaction idea of engraving and fixing is adopted to perform simple screen mapping on each access terminal, for example, screen projection processing is performed on a terminal interface according to a fixed split-screen template.
Therefore, the invention is analyzed and considered that the functions of the electronic whiteboard are not effectively expanded in the prior art, particularly richer interaction modes of the large-screen whiteboard and a plurality of client terminals, such as a screen-up function, are not effectively expanded, and therefore, the related problems of distribution of occupation of whiteboard screens during screen-up operation of a plurality of terminals and the like are not solved. It should be noted that the screen-up operation mainly focused by the present invention is different from the screen-up operation described above, and the existing whiteboard screen-up technology is a technology that directly and completely displays the content displayed on the current screen of each computing terminal on an electronic whiteboard, for example, the desktop of the PC end is displayed in a fixed area in the whiteboard, which belongs to a class of technologies that directly screen-up the movie and television video displayed by a mobile phone to a television screen. The terminal screen-up concerned by the present invention is for a specific purpose of the electronic whiteboard, and as mentioned above, the electronic whiteboard appears mainly as a writing tool for scene auxiliary language expression such as meeting, teaching, and the like, and therefore the screen-up operation herein refers to a process of synchronously transmitting and displaying on the electronic whiteboard by writing operation performed locally by each access terminal, which needs to consider how to perform layout of display and draw local operation on the electronic whiteboard when a plurality of client terminals access.
Disclosure of Invention
In view of the foregoing, the present invention is directed to a multi-terminal screen-loading method, apparatus and device applied to an electronic whiteboard, and accordingly to a computer-readable storage medium and a computer program product, which mainly solve the problem of how to perform layout and drawing after a plurality of terminals accessing the electronic whiteboard upload their local operations to the electronic whiteboard screen.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a multi-terminal screen-up method applied to an electronic whiteboard, including:
presetting a first display parameter of the electronic whiteboard;
acquiring a second display parameter of a current client terminal accessed to the electronic whiteboard;
obtaining the size information of the current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter;
according to a preset priority, the first display parameter, the size information and the information of the plurality of display areas displayed on the electronic whiteboard are utilized to perform self-adaptive typesetting on the current display area on the electronic whiteboard; the display areas correspond to the client terminals accessed to the electronic whiteboard one by one;
and obtaining the local operation content of the current client terminal, adapting the local operation content and then drawing the local operation content in the current display area.
In at least one possible implementation manner, the obtaining, based on the first display parameter and the second display parameter, size information of a current display area of the current client terminal on the electronic whiteboard includes:
according to the area reference width value or the area reference height value in the first display parameter and the display attribute parameter of the current client terminal in the second display parameter, finding out the current display area height value corresponding to the area reference width value or the current display area width value corresponding to the area reference height value;
determining size information of the current display area based on the area reference width value and the current display area height value, or based on the area reference height value and the current display area width value.
In at least one possible implementation manner, the manner of dividing the priority includes: and the priority is divided according to the timestamp of each client terminal accessing the electronic whiteboard, or the priority is divided according to the preset authority of the user corresponding to each client terminal.
In at least one possible implementation manner, the adaptively typesetting, on the electronic whiteboard, the current display area using the first display parameter, the size information, and a plurality of display area information already displayed on the electronic whiteboard includes:
calculating the undetermined abscissa of the current display area according to the transverse distance value in the first display parameter, the number of the displayed display areas of the current line of the whiteboard and the total width of the displayed display areas;
determining a preliminary typesetting position of the current display area and obtaining a target abscissa of the current display area according to the to-be-determined abscissa, the area width information in the size information and the maximum value of the visible width of the whiteboard in the first display parameter;
calculating a target vertical coordinate of the current display area according to the area height information in the size information, the longitudinal distance value in the first display parameter and the preliminary typesetting position;
and determining the target typesetting position of the current display area by using the target abscissa and the target ordinate, and drawing the current display area on the electronic whiteboard based on the target typesetting position and the size information.
In at least one possible implementation manner, the method further includes:
and when the electronic whiteboard adopts a non-rolling fixed visual mode, deciding whether to continue drawing the current display area on the electronic whiteboard according to the target ordinate, the area height information in the size information and the maximum value of the whiteboard visual height in the first display parameter in real time.
In at least one possible implementation manner, the method further includes:
monitoring whether a client terminal corresponding to the displayed display area is offline midway or not in real time;
and dynamically typesetting the plurality of subsequent display areas according to the size information of the display areas of the client terminal which is off-line in the midway so as to decide whether the plurality of subsequent display areas move forwards or not.
In a second aspect, the present invention provides a multi-terminal screen-on device applied to an electronic whiteboard, including:
the whiteboard display parameter presetting module is used for presetting a first display parameter of the electronic whiteboard;
the terminal display parameter acquisition module is used for acquiring a second display parameter of the current client terminal accessed to the electronic whiteboard;
a display area size calculation module, configured to obtain size information of a current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter;
the display area typesetting module is used for performing self-adaptive typesetting on the current display area on the electronic whiteboard according to a preset priority and by utilizing the first display parameter, the size information and the displayed display area information of the electronic whiteboard; the display areas correspond to the client terminals accessed to the electronic whiteboard one by one;
and the local operation screen-up module is used for acquiring the local operation content of the current client terminal, adapting the local operation content and then drawing the local operation content in the current display area.
In at least one possible implementation manner, the display area size calculation module includes:
a size parameter calculating unit, configured to obtain a current display area height value corresponding to the area reference width value or a current display area width value corresponding to the area reference height value according to the area reference width value or the area reference height value in the first display parameter and the display attribute parameter of the current client terminal in the second display parameter;
a size information determination unit for determining size information of the current display area based on the area reference width value and the current display area height value or based on the area reference height value and the current display area width value.
In at least one possible implementation manner, the display area composition module includes a priority classification unit, and the priority classification unit is configured to classify the priority according to a timestamp that each client terminal accesses the electronic whiteboard, or is configured to classify the priority according to a preset authority of a user corresponding to each client terminal.
In at least one possible implementation manner, the display region composition module further includes:
the undetermined abscissa calculating unit is used for calculating the undetermined abscissa of the current display area according to the transverse spacing value in the first display parameter, the number of the displayed display areas of the current line of the whiteboard and the total width of the displayed display areas;
the target abscissa calculating unit is used for determining the initial typesetting position of the current display area and obtaining the target abscissa of the current display area according to the undetermined abscissa, the area width information in the size information and the maximum value of the visible width of the whiteboard in the first display parameter;
the target vertical coordinate calculation unit is used for calculating a target vertical coordinate of the current display area according to the area height information in the size information, the vertical spacing value in the first display parameter and the preliminary typesetting position;
and the display area typesetting unit is used for determining the target typesetting position of the current display area by utilizing the target abscissa and the target ordinate, and drawing the current display area on the electronic whiteboard based on the target typesetting position and the size information.
In at least one possible implementation manner, the display area composition unit is further configured to:
and when the electronic whiteboard adopts a non-rolling fixed visual mode, deciding whether to continue drawing the current display area on the electronic whiteboard according to the target ordinate, the area height information in the size information and the maximum value of the whiteboard visual height in the first display parameter in real time.
In at least one possible implementation manner, the apparatus further includes a layout adjustment module, where the layout adjustment module includes:
the off-line monitoring unit is used for monitoring whether the client terminal corresponding to the displayed display area is off-line in the midway in real time;
and the dynamic typesetting unit is used for dynamically typesetting the plurality of subsequent display areas according to the size information of the display areas of the client terminals which are off-line in the midway so as to decide whether the plurality of subsequent display areas move forwards or not.
In a third aspect, the present invention provides a multi-terminal screen-up device, including:
one or more processors, memory which may employ a non-volatile storage medium, and one or more computer programs stored in the memory, the one or more computer programs comprising instructions which, when executed by the apparatus, cause the apparatus to perform the method as in the first aspect or any possible implementation of the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform at least the method as described in the first aspect or any of its possible implementations.
In a fifth aspect, the present invention also provides a computer program product for performing at least the method of the first aspect or any of its possible implementations, when the computer program product is executed by a computer.
In at least one possible implementation manner of the fifth aspect, the relevant program related to the product may be stored in whole or in part on a memory packaged with the processor, or may be stored in part or in whole on a storage medium not packaged with the processor.
The invention combines the display attribute of the electronic whiteboard with the respective display attribute of a plurality of client terminals, provides a solution for a multi-terminal local operation screen-up scene, and particularly calculates the size information of the display area corresponding to the access terminal in real time according to the display attributes of the access terminal and the electronic whiteboard, and realizes the self-adaptive typesetting layout of the current display area according to the size information of the display area and the real-time display condition of the whiteboard so as to synchronously adapt the local operation content of each access terminal to the respective corresponding display area on the electronic whiteboard according to a uniform standard, thereby solving the requirement of accessing the electronic whiteboard by a plurality of terminals to perform the local operation screen-up of the electronic whiteboard. The invention fully releases the use space of the electronic whiteboard, effectively expands the functional modes of the electronic whiteboard and the multi-client terminal, thereby obviously improving the use efficiency of the electronic whiteboard and improving the use experience of a user on the electronic whiteboard.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of an embodiment of a multi-terminal screen-up method applied to an electronic whiteboard according to the present invention;
FIG. 2 is a flowchart of an embodiment of an adaptive typesetting method provided by the invention;
fig. 3 is a schematic diagram of an embodiment of a multi-terminal screen-on device applied to an electronic whiteboard according to the present invention;
fig. 4 is a schematic diagram of an embodiment of a multi-terminal screen-up device provided by the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention provides at least one embodiment of a multi-terminal screen-up method applied to an electronic whiteboard, which is shown in fig. 1 and specifically includes:
and step S1, presetting first display parameters of the electronic whiteboard.
The display attribute parameters related to the display effect of the electronic whiteboard can be configured in advance, and the display attribute parameters can be directly related to the electronic whiteboard, and can also be related to display areas which need to be drawn on the electronic whiteboard and correspond to client terminals accessed to the electronic whiteboard one by one. Several specific display parameters that may be referenced are provided later in connection with specific implementation examples.
And step S2, acquiring a second display parameter of the current client terminal accessed to the electronic whiteboard.
The connection between the client terminal and the electronic whiteboard mentioned herein refers to an electrical signal connection manner related to data transmission, such as but not limited to bluetooth, WiFi (local area network or wide area network, etc.), radio frequency transceiving, etc., for which a mature electrical signal connection scheme can be used for reference, and the invention is not limited thereto. Furthermore, there may be many options for the client terminal supported by the electronic whiteboard, such as but not limited to a mobile phone, a tablet, a writing pad, and the like, which is not limited by the present invention. It should be noted that the second display parameter refers to information related to display attributes of each client terminal, such as, but not limited to, screen resolution, width and height values of the local operation interface, or a ratio thereof, and is preferably in units of pixels for the width and height parameters, but is not excluded from being in units of inches, centimeters, and the like in other embodiments.
In addition, there may be multiple options for the manner of obtaining the second display parameter, for example, when the current client terminal is accessed, the access terminal not only provides information such as its ID, but also provides the width and height parameters related to its display resolution, which may be written as mobile width and mobile height, and respectively represent the operation interface width and height of the client terminal; or the display parameters of a plurality of specific client terminal objects can be configured in the electronic whiteboard in advance, so that after the client terminal is accessed, the ID of the client terminal can be matched with the prestored corresponding second display parameters.
Step S3, obtaining size information of a current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter.
The purpose of this step is to combine the display attributes of the electronic whiteboard and the access terminal, and calculate the size of the corresponding display area of the current client terminal on the electronic whiteboard according to a predetermined scaling strategy, where the specific size calculation manner depends on the shape of the display interface of the client terminal, for example, if the client terminal is a circular operation interface (e.g., a certain model of smart watch), then it is necessary to calculate the corresponding size of the display area in the electronic whiteboard in the actual operation, for example, calculate the diameter, the perimeter, etc. of the corresponding display area of the operation interface of the smart watch in the electronic whiteboard, and finally, it is intended to scale the operation interface of the client terminal on the electronic whiteboard in an equal ratio so as to adapt to the on-screen display of the subsequent local writing and other operations.
For the sake of understanding, the implementation of the size calculation of the display area of the relatively common rectangular operation interface is schematically described here: in an actual operation, according to the area reference width value or the area reference height value in the first display parameter and the display attribute parameter of the current client terminal in the second display parameter, a current display area height value corresponding to the area reference width value or a current display area width value corresponding to the area reference height value may be obtained.
Specifically, a constant parameter viewHeight may be preset in the first display parameter of the electronic whiteboard in advance, and represents the area reference height value of the display area displayed on the electronic whiteboard (the manner of setting the area reference width value is similar to this, and is not described in detail), so that the current display area width value viewWidth that needs to be calculated may be obtained according to the following formula:
in this example, the size information of the current display area for the current access terminal may be determined from a preset area reference height value and the calculated width value of the current display area. The manner of determining the size information of the current display area based on the area reference width value and the height value of the current display area is similar to this, and is not repeated here.
And step S4, according to a preset priority, and by using the first display parameter, the size information and the information of the plurality of display areas displayed by the electronic whiteboard, performing adaptive typesetting on the current display area on the electronic whiteboard.
Since the present invention is directed to a one-to-many usage scenario, after the size of the display area of the access terminal is obtained, a clear typesetting manner is required before performing positioning rendering. The invention proposes that a display area of which client terminal is arranged in an electronic whiteboard visual interface is considered firstly, so that the display area can be determined by a priority dividing mode, wherein the priority dividing mode can be selected in various ways, for example, the priority is divided according to the preset authority of a user corresponding to each client terminal, namely, authority levels can be configured for users of a plurality of specific client terminals in advance, for example, the client terminal of the user with higher authority has higher priority, and the authority matching is carried out by utilizing the ID of an access terminal in the actual operation; of course, more preferably, the priority may be divided according to a timestamp of each client terminal accessing the electronic whiteboard, that is, when the multiple terminals access the electronic whiteboard, the access sequence of each client terminal may be obtained, and the display area of the client terminal accessed first may be preferentially laid out in the electronic whiteboard.
In addition, in the actual typesetting operation, the display areas of the access terminals may be laid out according to a certain preset rule, for example, according to a general sequence from top to bottom and from left to right, although the invention does not exclude other typesetting strategies. For ease of understanding, the following description will be made with the rule from top to bottom and from left to right.
In some embodiments of the present invention, the adaptive typesetting mode may be as shown in fig. 2, and specifically includes the following steps:
step S41, calculating the undetermined abscissa of the current display area according to the transverse distance value in the first display parameter, the number of the displayed display areas of the current line of the whiteboard and the total width of the displayed display areas;
step S42, determining the preliminary typesetting position of the current display area and obtaining the target abscissa of the current display area according to the undetermined abscissa, the area width information in the size information and the maximum value of the visible width of the whiteboard in the first display parameter;
step S43, calculating the target vertical coordinate of the current display area according to the area height information in the size information, the vertical spacing value in the first display parameter and the preliminary typesetting position;
step S44, determining a target layout position of the current display area using the target abscissa and the target ordinate, and drawing the current display area on the electronic whiteboard based on the target layout position and the size information.
For example, the first display parameter may be set to a maximum whiteboard visible width value, corenwidth, a maximum whiteboard visible height value, left distance leftMargin (representing an example of the lateral distance value), upper distance topMargin (representing an example of the longitudinal distance value), undetermined abscissa viewX', target abscissa viewX, target ordinate viewY, and the number viewN of display areas displayed on the current line of the whiteboard. The method comprises the following steps:
viewX′＝viewN×leftMargin+(View1Width+…+ViewnWidth)
wherein (View)1Width+…+ViewnWidth) characterizes the total Width of the displayed display area. Then, under judgmentThe following conditions:
viewX′+viewWidth＜screenWidth？
thus, the preliminary typesetting position can be determined, in this example, if the calculated position of the current display area in the horizontal direction (current line) is within the visible width of the whiteboard, it indicates that the current display area can be arranged in the current line, otherwise, the result is determined to be the line number +1, that is, another line of the current display area is arranged. If arranged in the current row, there may be:
viewX＝viewX′＝viewN×leftMargin+(View1Width+…+ViewnWidth)
if another line is arranged from the left side of the current display area, there may be:
viewX＝leftMargin
next, there may be:
viewY＝(viewHeight+topMargin)×rowNum-viewHeight
here, rowNum represents the number of lines where the current display area is located, which is related to the aforementioned preliminary typesetting position.
And finally, the target typesetting position of the current display area can be locked by the viewX and the viewY, and the display area can be drawn on the electronic whiteboard according to the viewWidth and the viewHeight of the current display area. As can be seen from the above examples, this embodiment merely represents the shape of the display area in the form of a rectangular box, and then those skilled in the art will understand that the foregoing viewX and viewY may refer to the horizontal and vertical coordinate values of a certain vertex of the rectangular box under the whiteboard coordinate system (according to the above examples, and the general screen coordinate system, specifically, the coordinates of the top left vertex of the rectangular display area may be represented, but it is not excluded that other vertices or the middle point of a certain edge is used in other examples, and the present invention is not limited thereto, based on the layout rule actually used). Of course, in the display area examples with other shapes, the corresponding coordinate calculation may be performed according to the specific shape, which is not described in detail herein.
It can be supplemented to explain that, before actually drawing the display area, the display area can be further combined with the visual mode of the electronic whiteboard, for example, a certain electronic whiteboard can be configured to have a rolling visual effect (rolling from top to bottom is taken as an example), that is, the display area of the client terminal accessed in real time can be drawn continuously according to the priority typesetting without paying attention to the number of the access terminals; for example, when a certain electronic whiteboard is configured in a non-rolling fixed visual mode, it may be determined whether to continue drawing the current display area on the electronic whiteboard according to the target ordinate, the area height information in the size information, and the maximum value of the whiteboard visual height in the first display parameter in real time. The following conditions may be specifically determined:
viewY+viewHeight＞screenHeight？
in this example, if the calculated vertical position of the current display area is already beyond the visible height of the whiteboard, the current display area is not drawn, or the access of the current client terminal is directly denied, and the current client terminal may be allowed to access, but a prompt is required to wait, which is not limited to this invention. It should be noted that the foregoing examples are all based on the layout rules from top to bottom and from left to right, and under the premise of different layout rules, the concept provided by the foregoing examples can be referred to for adaptive expansion.
And step S5, obtaining the local operation content of the current client terminal, adapting the local operation content, and then drawing the local operation content in the current display area.
After the typesetting of the display area is completed, the obtained local operation content of the current client terminal can be used for adaptive drawing, wherein the adaptive drawing can be used for adapting the drawing proportion of the local operation (combining the common use of the electronic whiteboard, namely writing characters, lines and the like) of each client terminal by a user according to the proportion of the currently displayed display area, and certainly can also be used for beautifying the local operation of each client terminal by using an operation content beautifying strategy so as to uniformly adapt the local operation of multiple terminals to the same electronic whiteboard.
In addition, the present invention has been further designed in combination with some situations that may occur in practical applications, that is, in some preferred embodiments of the present invention, whether the client terminal corresponding to each displayed display area is offline halfway can be monitored in real time, for example, a passive disconnection, a communication failure, or an active disconnection by a high-authority user, and then, dynamic typesetting can be performed on a plurality of subsequent display areas according to the size information of the display area of the client terminal offline halfway, so as to determine whether the plurality of subsequent display areas move forward, that is, after the display area of the client terminal offline halfway is idle on the whiteboard visual interface, self-adaptive typesetting needs to be performed according to the size of the subsequent display area and the size of the subsequent display area, and if the size of the subsequent display area is smaller than the former, the subsequent display area can move forward and so on. If the size of the subsequent display area is larger than the former, the current typesetting style can be considered to be kept, and it can be further pointed out that, for the electronic whiteboard with the fixed visual mode, after the subsequent display area is filled in an empty position, the subsequent display area can be processed according to the typesetting layout strategy again in combination with the size of the waiting current display area, so as to decide whether to draw the waiting current display area in the electronic whiteboard.
Finally, it can be stated that, in practical applications, further function expansion of the electronic whiteboard can be provided. For example, after the local content of each access terminal is rendered in each display area, one or more or all of the contents in the display areas may be selected and stored separately or in a combined manner, and the storage format includes, but is not limited to, a picture, PDF, a custom format, and the like, which is not limited to the present invention.
In summary, the present invention combines the display attributes of the electronic whiteboard with the respective display attributes of the multiple client terminals, and proposes a solution for the multi-terminal local operation on-screen scene, specifically, according to the display attributes of the access terminal and the electronic whiteboard, the size information of the display area corresponding to the access terminal is calculated in real time, and according to the size information of the display area and the real-time display condition of the whiteboard, the adaptive layout of the current display area is realized, so that the local operation content of each access terminal is synchronously adapted to the respective corresponding display area on the electronic whiteboard according to the unified standard, thereby solving the requirement of accessing the electronic whiteboard by multiple terminals to perform their local operation on-screen. The invention fully releases the use space of the electronic whiteboard, effectively expands the functional modes of the electronic whiteboard and the multi-client terminal, thereby obviously improving the use efficiency of the electronic whiteboard and improving the use experience of a user on the electronic whiteboard.
Corresponding to the above embodiments and preferred schemes, the present invention further provides an embodiment of a multi-terminal screen-up device applied to an electronic whiteboard, as shown in fig. 3, which may specifically include the following components:
the whiteboard display parameter presetting module 1 is used for presetting a first display parameter of the electronic whiteboard;
the terminal display parameter acquisition module 2 is used for acquiring a second display parameter of a current client terminal accessed to the electronic whiteboard;
a display area size calculation module 3, configured to obtain size information of a current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter;
the display area typesetting module 4 is used for performing self-adaptive typesetting on the current display area on the electronic whiteboard according to a preset priority and by using the first display parameter, the size information and the displayed display area information of the electronic whiteboard; the display areas correspond to the client terminals accessed to the electronic whiteboard one by one;
and the local operation screen-up module 5 is configured to obtain local operation content of the current client terminal, adapt the local operation content, and draw the local operation content in the current display area.
In at least one possible implementation manner, the display area size calculation module includes:
a size parameter calculating unit, configured to obtain a current display area height value corresponding to the area reference width value or a current display area width value corresponding to the area reference height value according to the area reference width value or the area reference height value in the first display parameter and the display attribute parameter of the current client terminal in the second display parameter;
a size information determination unit for determining size information of the current display area based on the area reference width value and the current display area height value or based on the area reference height value and the current display area width value.
In at least one possible implementation manner, the display area composition module includes a priority classification unit, and the priority classification unit is configured to classify the priority according to a timestamp that each client terminal accesses the electronic whiteboard, or is configured to classify the priority according to a preset authority of a user corresponding to each client terminal.
In at least one possible implementation manner, the display region composition module further includes:
the undetermined abscissa calculating unit is used for calculating the undetermined abscissa of the current display area according to the transverse spacing value in the first display parameter, the number of the displayed display areas of the current line of the whiteboard and the total width of the displayed display areas;
the target abscissa calculating unit is used for determining the initial typesetting position of the current display area and obtaining the target abscissa of the current display area according to the undetermined abscissa, the area width information in the size information and the maximum value of the visible width of the whiteboard in the first display parameter;
the target vertical coordinate calculation unit is used for calculating a target vertical coordinate of the current display area according to the area height information in the size information, the vertical spacing value in the first display parameter and the preliminary typesetting position;
and the display area typesetting unit is used for determining the target typesetting position of the current display area by utilizing the target abscissa and the target ordinate, and drawing the current display area on the electronic whiteboard based on the target typesetting position and the size information.
In at least one possible implementation manner, the display area composition unit is further configured to:
and when the electronic whiteboard adopts a non-rolling fixed visual mode, deciding whether to continue drawing the current display area on the electronic whiteboard according to the target ordinate, the area height information in the size information and the maximum value of the whiteboard visual height in the first display parameter in real time.
In at least one possible implementation manner, the apparatus further includes a layout adjustment module, where the layout adjustment module includes:
the off-line monitoring unit is used for monitoring whether the client terminal corresponding to the displayed display area is off-line in the midway in real time;
and the dynamic typesetting unit is used for dynamically typesetting the plurality of subsequent display areas according to the size information of the display areas of the client terminals which are off-line in the midway so as to decide whether the plurality of subsequent display areas move forwards or not.
It should be understood that the division of each component in the multi-terminal on-screen device applied to the electronic whiteboard shown in fig. 3 is merely a division of logical functions, and the actual implementation can be wholly or partially integrated into one physical entity or can be physically separated. And these components may all be implemented in software invoked by a processing element; or may be implemented entirely in hardware; and part of the components can be realized in the form of calling by the processing element in software, and part of the components can be realized in the form of hardware. For example, a certain module may be a separate processing element, or may be integrated into a certain chip of the electronic device. Other components are implemented similarly. In addition, all or part of the components can be integrated together or can be independently realized. In implementation, each step of the above method or each component above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above components may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), one or more microprocessors (DSPs), one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, these components may be integrated together and implemented in the form of a System-On-a-Chip (SOC).
In view of the foregoing examples and preferred embodiments thereof, it will be appreciated by those skilled in the art that, in practice, the technical idea underlying the present invention may be applied in a variety of embodiments, the present invention being schematically illustrated by the following vectors:
(1) a multi-terminal screen-up device. The device may specifically include: one or more processors, memory, and one or more computer programs, wherein the one or more computer programs are stored in the memory, the one or more computer programs comprising instructions, which when executed by the apparatus, cause the apparatus to perform the steps/functions of the foregoing embodiments or an equivalent implementation.
Fig. 4 is a schematic structural diagram of an embodiment of the multi-terminal screen-loading device provided by the present invention, where the device may be an intelligent electronic whiteboard, or a display device having a larger-sized screen, such as an interactive screen and an intelligent all-in-one machine equivalent to the electronic whiteboard.
As shown in particular in fig. 4, the multi-terminal screen device 900 includes a processor 910 and a memory 930. Wherein, the processor 910 and the memory 930 can communicate with each other and transmit control and/or data signals through the internal connection path, the memory 930 is used for storing computer programs, and the processor 910 is used for calling and running the computer programs from the memory 930. The processor 910 and the memory 930 may be combined into a single processing device, or more generally, separate components, and the processor 910 is configured to execute the program code stored in the memory 930 to implement the functions described above. In particular implementations, the memory 930 may be integrated with the processor 910 or may be separate from the processor 910.
In addition, to further improve the functionality of the multi-terminal on-screen device 900, the device 900 may further include one or more of an input unit 960, a display unit 970, an audio circuit 980, a camera 990, a sensor 901, and the like, which may further include a speaker 982, a microphone 984, and the like. The display unit 970 may include a display screen, among others.
Further, the apparatus 900 may also include a power supply 950 for providing power to various devices or circuits within the apparatus 900.
It should be understood that the operation and/or function of the various components of the apparatus 900 can be referred to in the foregoing description with respect to the method, system, etc., and the detailed description is omitted here as appropriate to avoid repetition.
It should be understood that the processor 910 in the multi-terminal screen-on-device 900 shown in fig. 4 may be a system on a chip SOC, and the processor 910 may include a Central Processing Unit (CPU), and may further include other types of processors, such as: an image Processing Unit (GPU), etc., which will be described in detail later.
In summary, various portions of the processors or processing units within the processor 910 may cooperate to implement the foregoing method flows, and corresponding software programs for the various portions of the processors or processing units may be stored in the memory 930.
(2) A readable storage medium, on which a computer program or the above-mentioned apparatus is stored, which, when executed, causes the computer to perform the steps/functions of the above-mentioned embodiments or equivalent implementations.
In the several embodiments provided by the present invention, any function, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in a computer readable storage medium. Based on this understanding, some aspects of the present invention may be embodied in the form of software products, which are described below, or portions thereof, which substantially contribute to the art.
(3) A computer program product (which may include the above apparatus) which, when run on a computer device, causes the computer device to execute the multi-terminal screen-up method applied to an electronic whiteboard of the foregoing embodiment or an equivalent embodiment. In particular, the computer program product may refer to a whiteboard APP, or other software program that carries similar functionality.
From the above description of the embodiments, it is clear to those skilled in the art that all or part of the steps in the above implementation method can be implemented by software plus a necessary general hardware platform. With this understanding, the above-described computer program products may include, but are not limited to, refer to APP; in the foregoing, the device/terminal may be a computer device, and the hardware structure of the computer device may further specifically include: at least one processor, at least one communication interface, at least one memory, and at least one communication bus; the processor, the communication interface and the memory can all complete mutual communication through the communication bus. The processor may be a central Processing unit CPU, a DSP, a microcontroller, or a digital Signal processor, and may further include a GPU, an embedded Neural Network Processor (NPU), and an Image Signal Processing (ISP), and may further include a specific integrated circuit ASIC, or one or more integrated circuits configured to implement the embodiments of the present invention, and the processor may have a function of operating one or more software programs, and the software programs may be stored in a storage medium such as a memory; and the aforementioned memory/storage media may comprise: non-volatile memories (non-volatile memories) such as non-removable magnetic disks, U-disks, removable hard disks, optical disks, etc., and Read-Only memories (ROM), Random Access Memories (RAM), etc.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
Those of skill in the art will appreciate that the various modules, elements, and method steps described in the embodiments disclosed in this specification can be implemented as electronic hardware, 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 implementation. 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 addition, the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other. In particular, for embodiments of devices, apparatuses, etc., since they are substantially similar to the method embodiments, reference may be made to some of the descriptions of the method embodiments for their relevant points. The above-described embodiments of devices, apparatuses, etc. are merely illustrative, and modules, units, etc. described as separate components may or may not be physically separate, and may be located in one place or distributed in multiple places, for example, on nodes of a system network. Some or all of the modules and units can be selected according to actual needs to achieve the purpose of the above-mentioned embodiment. Can be understood and carried out by those skilled in the art without inventive effort.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are merely preferred embodiments of the present invention, and it should be understood that technical features related to the above embodiments and preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the invention are within the scope of the invention as long as they are not beyond the spirit of the description and the drawings.
Claims (10)
1. A multi-terminal screen-loading method applied to an electronic whiteboard is characterized by comprising the following steps:
presetting a first display parameter of the electronic whiteboard;
acquiring a second display parameter of a current client terminal accessed to the electronic whiteboard;
obtaining the size information of the current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter;
according to a preset priority, the first display parameter, the size information and the information of the plurality of display areas displayed on the electronic whiteboard are utilized to perform self-adaptive typesetting on the current display area on the electronic whiteboard; the display areas correspond to the client terminals accessed to the electronic whiteboard one by one;
and obtaining the local operation content of the current client terminal, adapting the local operation content and then drawing the local operation content in the current display area.
2. The multi-terminal screen-up method applied to an electronic whiteboard of claim 1, wherein the obtaining of the size information of the current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter comprises:
according to the area reference width value or the area reference height value in the first display parameter and the display attribute parameter of the current client terminal in the second display parameter, finding out the current display area height value corresponding to the area reference width value or the current display area width value corresponding to the area reference height value;
determining size information of the current display area based on the area reference width value and the current display area height value, or based on the area reference height value and the current display area width value.
3. The multi-terminal screen-up method applied to the electronic whiteboard of claim 1, wherein the prioritizing comprises: and the priority is divided according to the timestamp of each client terminal accessing the electronic whiteboard, or the priority is divided according to the preset authority of the user corresponding to each client terminal.
4. The multi-terminal screen-on method applied to an electronic whiteboard according to any one of claims 1 to 3, wherein the utilizing the first display parameter, the size information and a plurality of display area information displayed by the electronic whiteboard to perform adaptive layout on the current display area on the electronic whiteboard comprises:
calculating the undetermined abscissa of the current display area according to the transverse distance value in the first display parameter, the number of the displayed display areas of the current line of the whiteboard and the total width of the displayed display areas;
determining a preliminary typesetting position of the current display area and obtaining a target abscissa of the current display area according to the to-be-determined abscissa, the area width information in the size information and the maximum value of the visible width of the whiteboard in the first display parameter;
calculating a target vertical coordinate of the current display area according to the area height information in the size information, the longitudinal distance value in the first display parameter and the preliminary typesetting position;
and determining the target typesetting position of the current display area by using the target abscissa and the target ordinate, and drawing the current display area on the electronic whiteboard based on the target typesetting position and the size information.
5. The multi-terminal screen-on method applied to the electronic whiteboard of claim 4, wherein the method further comprises:
and when the electronic whiteboard adopts a non-rolling fixed visual mode, deciding whether to continue drawing the current display area on the electronic whiteboard according to the target ordinate, the area height information in the size information and the maximum value of the whiteboard visual height in the first display parameter in real time.
6. The multi-terminal screen-on method applied to the electronic whiteboard according to any one of claims 1 to 3 and 5, wherein the method further comprises:
monitoring whether a client terminal corresponding to the displayed display area is offline midway or not in real time;
and dynamically typesetting the plurality of subsequent display areas according to the size information of the display areas of the client terminal which is off-line in the midway so as to decide whether the plurality of subsequent display areas move forwards or not.
7. A multi-terminal screen loading device applied to an electronic whiteboard is characterized by comprising:
the whiteboard display parameter presetting module is used for presetting a first display parameter of the electronic whiteboard;
the terminal display parameter acquisition module is used for acquiring a second display parameter of the current client terminal accessed to the electronic whiteboard;
a display area size calculation module, configured to obtain size information of a current display area of the current client terminal on the electronic whiteboard based on the first display parameter and the second display parameter;
the display area typesetting module is used for performing self-adaptive typesetting on the current display area on the electronic whiteboard according to a preset priority and by utilizing the first display parameter, the size information and the displayed display area information of the electronic whiteboard; the display areas correspond to the client terminals accessed to the electronic whiteboard one by one;
and the local operation screen-up module is used for acquiring the local operation content of the current client terminal, adapting the local operation content and then drawing the local operation content in the current display area.
8. A multi-terminal screen-up device, comprising:
one or more processors, a memory, and one or more computer programs, wherein the one or more computer programs are stored in the memory, the one or more computer programs comprising instructions which, when executed by the apparatus, cause the apparatus to perform the multi-terminal on-screen method as claimed in any of claims 1 to 6 as applied to an electronic whiteboard.
9. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program runs on a computer, the computer is caused to execute the multi-terminal screen-up method applied to an electronic whiteboard according to any one of claims 1 to 6.
10. A computer program product for performing the multi-terminal screen-up method applied to an electronic whiteboard according to any one of claims 1 to 6 when the computer program product is executed by a computer.
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