CN108664229B - Screen transmission method and device, electronic equipment and computer readable storage medium - Google Patents
Screen transmission method and device, electronic equipment and computer readable storage medium Download PDFInfo
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- CN108664229B CN108664229B CN201810283045.2A CN201810283045A CN108664229B CN 108664229 B CN108664229 B CN 108664229B CN 201810283045 A CN201810283045 A CN 201810283045A CN 108664229 B CN108664229 B CN 108664229B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
- G09G2370/042—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller for monitor identification
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/16—Use of wireless transmission of display information
Abstract
The invention provides a screen transmission method, a screen transmission device, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: setting a screen transmission state for the external equipment, wherein the screen transmission state comprises sharing; when a state switching signal sent by external equipment connected with a communication interface is received, acquiring the screen transmission state of the external equipment; when the screen transmission state of the external equipment is not in sharing, setting the screen transmission state of the screen transmission equipment to be in sharing; and receiving desktop data sent by external equipment with a screen transmission state being shared. When the state switching signal is received, the screen transmission state of the external device is changed by controlling the driving of the conference panel to be bound or unbound with the external device, and the desktop data sent by the shared external device in the screen transmission state is received, so that a user can seize the screen transmission by sending the state switching signal, and the switching mode of the screen transmission device is simple and convenient.
Description
Technical Field
The present invention relates to the field of screen transmission technologies, and in particular, to a screen transmission method and apparatus, an electronic device, and a computer-readable storage medium.
Background
The screen transmission technology mainly refers to a technology of synchronizing contents displayed on a screen of a source device such as a mobile phone and a computer and played sound to a display device such as a projector, a television, a conference panel and the like through the screen transmission device for displaying. The mobile phone, the computer and other equipment have the advantages of convenience in operation, strong processing capability and the like, while the conference tablet and other display equipment have the advantages of large screen, good sound effect and the like, and the advantages of the mobile phone, the computer and the other display equipment can be combined through a screen transmission technology and are used in a large number in scenes such as conferences.
Taking a conference scene as an example, when a meeting is started, a plurality of participants may need to display data on their computers on a conference tablet, and the current solution generally includes: 1. switching a screen transmission channel on the conference panel to display the desktop data of the computer needing screen transmission; 2. and removing the screen transmission equipment on other computers, and accessing the screen transmission equipment on the computer needing screen transmission. Especially, in a scene that the screen transmission needs to be frequently switched, a user needs to repeatedly plug and pull the screen transmission equipment, or frequently walks to a conference tablet and clicks a screen transmission switching channel, so that the 2 screen transmission switching modes are inconvenient to use.
Disclosure of Invention
In view of this, the present invention provides a screen transmission method, device, electronic device and computer-readable storage medium, and aims to solve the problem that the existing screen transmission switching mode by plugging or clicking on a conference tablet is inconvenient to use.
Specifically, the invention is realized by the following technical scheme:
a screen transmission method comprises the following steps:
when a state switching signal sent by external equipment is received, acquiring the screen transmission state of the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
if the screen transmission state of the external equipment is not in sharing, setting the screen transmission state of the external equipment to be in sharing;
and receiving desktop data sent by the external equipment with the screen transmission state being shared.
In one embodiment, the screen-passing state further includes:
the method comprises the steps of waiting for preemption, and representing that the external equipment is in a state of waiting for desktop data transmission;
before the step of setting the screen transmission state of the screen transmission device to be shared, the method further comprises the following steps:
and if the screen transmission state of the external equipment is the shared external equipment, setting the screen transmission state of the external equipment to be preempted.
In one embodiment, the screen-passing state further includes:
the sharing method comprises the steps of sharing and representing that external equipment is in a state of suspending desktop data transmission;
after the step of acquiring the screen transmission state of the external device when receiving the state switching signal sent by the external device, the method further comprises the following steps:
and when the screen transmission state of the external equipment is in sharing, setting the screen transmission state of the screen transmission equipment to be shared.
In an embodiment, after the step of setting the screen transmission state of the screen transmission device to be shared when the screen transmission state of the external device is in sharing, the method further includes:
detecting whether external equipment with a screen transmission state to be preempted exists or not;
if the external device exists, selecting a target external device from the external devices to be preempted according to a preset rule, and setting the screen transmission state of the target external device to be shared.
In one embodiment, the preset rules include:
when only one external device with a screen transmission state to be preempted exists, taking the external device as a target external device;
and when a plurality of external devices with screen transmission states to be preempted exist, the earliest or latest accessed screen transmission state is taken as the external device to be preempted as the target external device.
In an embodiment, before the step of setting the screen-passing state of the target external device to be shared, the method further includes:
and unbinding the external equipment with the screen transmission state to be shared with the drive, setting the screen transmission state to be preempted, and binding the target external equipment with the drive.
In one embodiment, an external device access event of each communication interface is monitored;
setting a screen transmission state for the accessed external equipment according to a preset access rule;
the preset access rule comprises the following steps:
and when the screen transmission state of the external equipment in sharing exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
In one embodiment, the preset access rule further includes:
and when the external equipment with the screen transmission state to be shared exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
In one embodiment, the preset access rule further includes:
and when the screen transmission state is the external equipment to be shared, setting the screen transmission state of the newly accessed external equipment to be shared.
In an embodiment, the step of setting the screen transmission state of the newly accessed external device to be shared when there is an external device whose screen transmission state is to be shared includes:
and setting the screen transmission state of the external equipment with the screen transmission state to be shared as to-be-preempted, and setting the screen transmission state of the newly accessed external equipment as in sharing.
In an embodiment, before the step of setting the screen-transferring state of the newly accessed external device to be shared, the method further includes:
and unbinding the external equipment with the screen transmission state to be shared with the drive, and binding the newly accessed external equipment with the drive.
The invention also discloses a screen transmission device, which comprises:
the acquisition module is used for acquiring the screen transmission state of the external equipment when receiving a state switching signal sent by the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
the setting module is used for setting the screen transmission state of the external equipment to be shared if the screen transmission state of the external equipment is not in the sharing state;
and the receiving module is used for receiving the desktop data which is sent by the external equipment in sharing screen transmission state.
The invention also discloses an electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the screen transmission method according to any one of the preceding claims.
The invention also discloses a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements a screen transmission method as described in any one of the preceding claims.
The invention sets a screen transmission state for external equipment, wherein the screen transmission state comprises the following steps: sharing; when a state switching signal sent by external equipment connected with a communication interface is received, acquiring the screen transmission state of the external equipment; when the screen transmission state of the external equipment is not in sharing, setting the screen transmission state of the screen transmission equipment to be in sharing; and receiving desktop data sent by external equipment with a screen transmission state being shared. The conference panel can only receive desktop data sent by one external device at a certain time, when a state switching signal is received, the screen transmission state of the external device is changed by controlling the binding or unbinding of the drive of the conference panel and the external device, and the desktop data sent by the external device with the screen transmission state being shared is received, and only one external device is bound with the drive at a certain time, namely, the screen transmission state of only one external device is shared, and a user can seize the screen transmission by sending the state switching signal, so that the screen transmission device does not need to be repeatedly plugged and unplugged or moved to the conference panel to click a screen transmission channel to be switched, and the switching mode of the screen transmission device is simple and convenient.
Drawings
FIG. 1a is a flow chart illustrating a method of transmitting a screen in accordance with an exemplary embodiment of the present invention;
FIG. 1b is a schematic diagram illustrating access to two external devices in accordance with an exemplary embodiment of the present invention;
FIG. 1c is a diagram of a screen-passing frame in a conference tablet in accordance with an exemplary embodiment of the present invention;
FIG. 1d is a diagram of a screen-passing frame in a conference tablet in accordance with an exemplary embodiment of the present invention;
FIG. 2a is a diagram of a screen-passing frame in a prior art conference tablet;
FIG. 2b is a schematic diagram of switching an external device by plugging;
FIG. 3 is a flow chart illustrating a method of screen transmission in accordance with an exemplary embodiment of the present invention;
FIG. 4 is a flow chart illustrating a method of screen transmission in accordance with an exemplary embodiment of the present invention;
FIG. 5a is a state machine logic diagram illustrating an exemplary embodiment of the present invention;
FIG. 5b is a state machine logic diagram illustrating an exemplary embodiment of the present invention;
FIG. 6 is a logical block diagram of a touch screen apparatus according to an exemplary embodiment of the present invention;
fig. 7 is a logical block diagram of an electronic device shown in an exemplary embodiment of the invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The screen transmission technology mainly refers to a technology of synchronizing contents displayed on a screen of a source device such as a mobile phone and a computer and played sound (desktop data) to a display device such as a projector, a television, a conference panel and the like through the screen transmission device for displaying. The mobile phone, the computer and other equipment have the advantages of convenience in operation, strong processing capability and the like, while the conference tablet and other display equipment have the advantages of large screen, good sound effect and the like, and the advantages of the mobile phone, the computer and the other display equipment can be combined through a screen transmission technology and are used in a large number in scenes such as conferences.
Taking a conference scene as an example, when a meeting is started, a plurality of participants may need to display data on their computers on a conference tablet, and the current solution generally includes: 1. switching a screen transmission channel on the conference panel to display the desktop data of the computer needing screen transmission; 2. and removing the screen transmission equipment on other computers, and accessing the screen transmission equipment on the computer needing screen transmission. Especially, in a scene that the screen transmission needs to be frequently switched, a user needs to repeatedly plug and pull the screen transmission equipment, or frequently walks to a conference tablet and clicks a screen transmission switching channel, so that the 2 screen transmission switching modes are inconvenient to use. In order to solve the above problem, the present invention provides a screen transmission method, as shown in fig. 1a, including the following steps:
step S110: when a state switching signal sent by external equipment is received, acquiring the screen transmission state of the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
when the screen is wirelessly transmitted, the conference tablet and the screen transmission equipment are in data communication through the network, so that the link of matching the drive in the conference tablet operating system and the screen transmission equipment is not needed, and the screen transmission state is not modified in a binding or unbinding drive mode, so that one embodiment of the method is applied to wired screen transmission, and the process of transmitting the screen through the wired screen transmission equipment at present is as follows: one end of the screen transmission device is connected with a USB interface of a source end device (a notebook computer and the like), the other end of the screen transmission device is connected with a USB interface of a conference panel, the source end device supplies power for the screen transmission device, so that the screen transmission device is in a starting state, the conference panel can enumerate information of devices accessed by the interfaces when the USB interface is accessed into the devices, when the devices are identified to be the screen transmission device, a driver is bound with the screen transmission device, desktop data of the source end device captured by the screen transmission device can be received, and the desktop data are analyzed and rendered on a screen by the conference panel, so that screen transmission is achieved.
However, in the conventional wired screen transmission method, as shown in fig. 2a and 2b, the conference tablet 200 detects identification information such as VID (Vendor ID) and/or PID (Product ID) of connected devices through an information driver, and when it is identified that the accessed device is the screen transmission device 100, the screen transmission driver is bound to the screen transmission device 100, so as to receive desktop data transmitted by the screen transmission device 100 (the desktop data is captured by the screen transmission device 100 from the source device 301). Of course, the user may also stop/start the screen transmission by pressing the key 101 on the screen transmission device 100, where stopping the screen transmission means that the screen transmission device 100 does not send desktop data to the conference tablet 200. Obviously, when other source devices need to send desktop data to the conference tablet, the screen transfer device may be connected to the source device that needs to transfer the screen, for example, in fig. 2b, the screen transfer device 100 is removed from the source device 302, and then the screen transfer device 100 is inserted into the USB interface of the source device 301.
Of course, it is also possible to connect the source device 301 to the conference tablet 200 via the pass-screen device 111 and the source device 302 to the conference tablet 200 via the pass-screen device 112, as shown in fig. 1b, but as shown in fig. 2a, although the information driver can identify the pass- screen devices 111, 112, there is only one pass-screen driver, and one pass-screen driver can only bind with one pass-screen device, and the binding is not usually unbound unless the bound pass-screen device is unplugged, etc. Obviously, the conventional wired screen transmission mode cannot switch screen transmission between a plurality of source end devices 301 and 302 conveniently and quickly.
For this purpose, the present invention sets a pass screen state for external devices (which may be understood as pass screen devices 111 and 112, and of course, the pass screen device and its connected source device may be regarded as an external device as a whole), and as shown in fig. 1c, the present invention is mainly different from fig. 2b in that an adaptation driver 1 and an adaptation driver 2 are added, where the adaptation driver 1 is one and the number of the adaptation drivers 2 may be set as required, and is not limited to the one shown in the figure.
The adaptive driver of the invention is used as a bottom framework of the operating system, and can report communication messages to the upper-layer application, while the screen transmission driver can report multimedia files (desktop data) to the upper-layer application, and the screen transmission application can acquire the desktop data reported by the screen transmission driver in a system calling manner.
According to the invention, the adaptation driver 1 and the adaptation driver 2 are arranged so as to adapt to a plurality of external devices, only the adaptation driver 1 is arranged so as to be capable of being bound with the screen transmission driver, desktop data of the external devices can be sent to the adaptation driver 1, and then the desktop data is sent to the screen transmission driver by the adaptation driver 1, so that the screen transmission application can acquire the desktop data in a system calling manner.
The screen transmission state of the external equipment is in sharing, namely the external equipment is in a desktop data transmission state; the external equipment with the screen transmission state as sharing is matched with the adaptive drive 1 in combination with the above; for example, the screen transmission state of the source device 301 in fig. 1b is in sharing, while the screen transmission state of the source device 302 is obviously not in sharing (only the screen transmission state of one source device is in sharing at the same time), that is, the source device 301 is adapted to the adaptation driver 1, and the source device 302 is adapted to the adaptation driver 2.
When the user wants the source device 302 to become the screen-passing state, the user may press the key 102 on the screen-passing device 112, so that the screen-passing device 112 sends a state switching signal to the conference tablet 200, and the adaptation driver 2 is configured to listen to the state switching signal (key event) sent by the external device adapted to the adaptation driver 2, obviously, the screen-passing state of the external device adapted to the adaptation driver 2 is not in sharing.
Step S120: if the screen transmission state of the external equipment is not in sharing, setting the screen transmission state of the screen transmission equipment to be in sharing;
the invention aims to enable different external devices to be capable of preempting screen transmission opportunities (considered as screen transmission preemptions), so that different rules can be set for preempting screen transmission, for example, when a state switching signal which is not sent by the external device in sharing is received, the screen transmission state of the screen transmission device can be set in sharing; of course, other rules may also be added, for example, the screen-transferring state of the external device that is to preempt screen-transferring may be set to sharing and the like after the current screen-transferring state is the state switching signal sent by the sharing external device.
Of course, since the conference tablet 200 can only receive and display desktop data of one source device at the same time, that is, only one source device in the sharing screen state exists, if the source device in the sharing screen state already exists when the state switching signal is received, it is necessary to switch the screen transmission state of the source device from the sharing screen state to the non-sharing screen state.
For convenience of description, an embodiment of the present invention refers to a screen-passing state of the external device adapted to the adaptation driver 2 as to-be-preempted, where the to-be-preempted state is used to represent that the external device is in a state of waiting for transmission of desktop data. In the process of preempting the screen, if the screen transmission state exists as the shared external device before, setting the screen transmission state of the external device to be preempted, and then setting the screen transmission state of the external device preempting the screen transmission to be shared.
As described above, only one adaptation driver 1 is needed, and to send desktop data to the screen transmission application, the external device needs to be associated with the adaptation driver 1, as shown in fig. 1b and 1c, when the screen transmission state of the source device 301 is in sharing, and a user preempts screen transmission by sending a state switching signal (key event) by pressing a key of the screen transmission device 102, the adaptation driver 2 generates a thread according to the state switching signal, so that the adaptation driver 1 is unbound from the screen transmission driver and the screen transmission device 101, and the adaptation driver 2 is unbound from the screen transmission device 102; and then controlling the adaptive drive 1 to be bound with the screen transmission drive and the screen transmission equipment 102, and controlling the adaptive drive 2 to be bound with the screen transmission equipment 101. Of course, the adaptation driver 2 may also report the key event to the screen transmission application, and the screen transmission application controls the binding and unbinding processes. The invention does not limit the control subject and process of binding and unbinding.
Step S130: and receiving desktop data sent by the external equipment with the screen transmission state being shared.
According to the invention, the screen transmission state is set for the external equipment, and the purpose of switching the screen transmission state is achieved by controlling the binding and/or unbinding of the driver and the external equipment when the state switching signal sent by the external equipment is received, because the screen transmission state of at most one external equipment is in sharing at the same time, the conference panel 200 only receives and displays the desktop data sent by the external equipment in sharing. According to the invention, the screen transmission equipment does not need to be repeatedly plugged and unplugged or the screen transmission equipment is walked to the conference panel to click the screen transmission switching channel, a user can switch the desktop data received by the conference panel by controlling the screen transmission equipment to send the state switching signal, and the switching mode of the screen transmission equipment is simple and convenient.
During the process of the source device sending the desktop data to the conference tablet 200 for display, the user may not want to display the source device desktop data on the conference tablet 200 for a while, but does not want to use the complicated way of unplugging the pass-screen device. To this end, an embodiment of the present invention further provides the following method:
after the step of acquiring the screen transmission state of the external device when receiving the state switching signal sent by the external device, the method further comprises the following steps:
and when the screen transmission state of the external equipment is in sharing, setting the screen transmission state of the screen transmission equipment to be shared.
The screen transmission state further comprises:
and representing that the external equipment is in a state of suspending desktop data transmission when the external equipment is to be shared.
The state switching signal is not only that the screen transmission state is not the external device in sharing and can be sent, but also that the screen transmission state is the external device in sharing and can be sent. When the screen transfer state is a state switching signal sent by the sharing external device, generally speaking, the user wants to pause displaying of the desktop data of the source device on the conference tablet 200, at this time, the screen transfer device pauses transmitting the desktop data to the conference tablet 200, and certainly, the screen transfer device may pause capturing the desktop data from the source device. At this time, the screen transmission state of the external device is not in the sharing process, so that for convenience of distinction, the screen transmission state under the condition of the external device is called to be shared, and the to-be-shared state is used for representing that the external device is in a state of suspending transmission of desktop data. The screen transmission state is converted into an external device to be shared, the external device is still matched with the adaptive driver 1, and the adaptive driver 1 is still bound with the screen transmission driver.
The mode of sending the state switching signal to "preempt" the screen transmission state in sharing may be referred to as an actively preempted screen transmission state, and may also be a passively preempted screen transmission state, for example, the screen transmission state is that the external device in sharing may "give way" the screen transmission state in sharing to other external devices by exiting the screen transmission state, and the purpose of switching the screen transmission device may also be achieved. To this end, in an embodiment of the present invention, after the step of setting the screen transmission state of the screen transmission device to be shared when the screen transmission state of the external device is in sharing, as shown in fig. 3, the method further includes:
step S310: detecting whether external equipment with a screen transmission state to be preempted exists or not;
step S320: if the external device exists, selecting a target external device from the external devices to be preempted according to a preset rule, and setting the screen transmission state of the target external device to be shared.
In a multi-person conference, each participant can seize the screen transmission opportunity by pressing the keys of the screen transmission equipment, and certainly, the participant who is transmitting the screen can quit by pressing the keys of the screen transmission equipment, namely, the screen transmission opportunity is given to other participants. For example, when the screen-passing state is the sharing external device or the external device to be shared, the screen-passing state of the newly accessed external device may be set to be preempted. When the screen transfer device in the screen transfer state during sharing suspends sharing of the desktop by sending the state switching signal, if the conference tablet 200 is further connected to other external devices (that is, the screen transfer state exists as the external device to be preempted), the target external device may be selected from the external devices in the screen transfer state during preemption according to a preset rule, and the screen transfer state of the target external device is set during sharing.
The preset rule may have different forms, and may be set according to actual requirements, and as an embodiment, the present invention provides a preset rule, including:
when only one external device with a screen transmission state to be preempted exists, taking the external device as a target external device;
and when a plurality of external devices with screen transmission states to be preempted exist, the earliest or latest accessed screen transmission state is taken as the external device to be preempted as the target external device.
As shown in fig. 1b and fig. 1c, the source device 301 is connected to the conference panel 200 through the screen transfer device 111, the source device 302 is connected to the conference panel 200 through the screen transfer device 112, and the desktop data screen of the source device 301 is transmitted to the conference panel 200, so that the screen transfer state of the screen transfer device 111 is in sharing, that is, the adaptation driver 1 is adapted to the screen transfer device 111 and bound to the screen transfer driver. And the adaptation driver 2 is adapted to the screen transmission device 112, and the screen transmission state of the screen transmission device 112 is to be preempted. In this embodiment, the desktop data is required to be transmitted to the conference tablet 200 through the screen transmission driver, and the adaptation driver 1 is the only adaptation driver that can be matched with the screen transmission driver. Thus, when the screen transfer device 112 wants to preempt the screen transfer opportunity (i.e., the screen transfer state becomes shared), the following operations need to be performed:
before the step of setting the screen-transferring state of the target external device to be shared, the method further includes:
and unbinding the external equipment with the screen transmission state to be shared with the drive, setting the screen transmission state to be preempted, and binding the target external equipment with the drive.
In fig. 1b, that is, the binding relationship between the screen transmission driver and the screen transmission device 111 needs to be released, the screen transmission state of the screen transmission device 111 is set to be preempted, and the adaptation driver 2 may be adapted to the screen transmission device 111. The screen transmission device 112 as the target external device is adapted to the adaptation driver 1, and the adaptation driver 1 is bound to the screen transmission driver, so that the screen transmission state of the screen transmission device 112 is in sharing.
Although the description of the unbinding, rebinding and screen transmission state setting is directed to the passively preemptive screen transmission, the unbinding, rebinding and screen transmission state setting also exists in the actively preemptive screen transmission process, and the specific process is similar to the above manner and is not described herein again.
Although the above description is directed to the process of preempting the screen render after the conference tablet 200 has accessed multiple external devices, it is obvious that the screen render devices are not normally connected to the conference tablet 200 at the same time (even though they are plugged at the same time, there is a certain time difference); of course, there are also situations where the user accesses a new external device when a screen transfer is required. The invention effectively manages the related matters of switching the screen transmission among the external devices by setting different screen transmission states for different external devices, obviously, when the external devices are accessed, the corresponding screen transmission states need to be set for the external devices. To this end, as shown in fig. 4, the method of an embodiment of the present invention further includes the following steps:
step S410: monitoring an external equipment access event of each communication interface;
step S420: setting a screen transmission state for the accessed external equipment according to a preset access rule;
the preset access rule comprises the following steps:
and when the screen transmission state of the external equipment in sharing exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
The conference tablet 200 enumerates identification information such as VID/PID of newly accessed devices through the USB driver, the information driver is used to obtain the identification information, when it is identified that the accessed device is a screen-transferring device, it is determined whether a screen-transferring state is currently an external device in sharing (i.e., whether an external device bound to the adaptation driver 1 exists), and if not, for example, the screen-transferring device is currently the only screen-transferring device connected to the conference tablet 200, and of course, although a plurality of external devices are connected before, the screen-transferring state is that the external device in sharing or to be shared is removed, but other external devices do not seize that the screen-transferring state is changed into the external device in sharing; the screen-passing state of the newly accessed external device can be directly set to be in sharing.
When the screen transmission state of the external device is the shared external device, the screen transmission state of the newly accessed external device is set to be preempted, namely the screen transmission state is that the adaptation relation between the shared external device and the adaptation driver 1 is unchanged, the newly accessed external device and the adaptation driver 2 (a plurality of adaptation drivers 2 can be generated according to the number of the external devices adapted to the adaptation drivers 2), so that the newly accessed external device cannot interrupt the current screen projection display, and if the newly accessed external device needs to preempt the screen transmission, the screen transmission can be preempted by sending a state switching signal according to a key.
Certainly, the preset access rule may have other modes, for example, if a user newly inserts an external device, it is to use the new external device to transmit a screen, so that when it is detected that the external device is accessed, the screen transmission state of the newly accessed external device is set to be in sharing, and if the external device which has "snatched" the screen transmission opportunity still needs to transmit a screen, the screen transmission opportunity may be snatched in a mode of sending a state switching signal by pressing a key. The preset access rule may be set according to actual use requirements, which is not limited in the present invention.
As described above, even if there is no external device whose screen transmission state is in sharing, there may be a screen transmission device whose screen transmission state is to be shared, and the screen transmission devices whose screen transmission state is in sharing and to be shared are both in an adaptation state with the adaptation driver 1 and bound to the screen transmission driver, and if the screen transmission state of the screen transmission device adapted to the adaptation driver 1 is to be shared, it may be considered that the user does not want to transmit a screen at present. Therefore, further, in an embodiment of the present invention, the preset access rule may further include:
and when the screen transmission state is the external equipment to be shared, setting the screen transmission state of the newly accessed external equipment to be shared.
As described above, the external device with the screen transmission state to be shared (hereinafter referred to as an "a" external device) is still bound to the adaptation driver 1, as shown in fig. 1d, at this time, the newly accessed external device (hereinafter referred to as a "b" external device) may be adapted to the adaptation driver 3, and the screen transmission state is to be preempted. The adaptation driver 3 can control the adaptation driver 1 to be unbound with the screen transmission driver and the first external equipment through generating threads, and the adaptation driver 3 to be unbound with the second external equipment; and then controlling the adaptive drive 1 to be bound with the screen transmission drive and the external equipment B, and controlling the adaptive drive 2 to be bound with the external equipment A. Therefore, the conference tablet can receive and display the desktop data sent by the external device B. The newly accessed external device is an access event for the adaptation driver 3, so that the adaptation driver 3 can report the access event to the screen transmission application, and the screen transmission application controls the binding and unbinding processes. The invention does not limit the control subject and process of binding and unbinding.
When a new device is inserted, although the binding and/or unbinding between the driver and the external device can be triggered, even the screen transmission opportunity is seized, the picture displayed by the conference panel of the newly inserted external device is jumped to be the desktop of the newly inserted external device, and a glancing feeling exists from the use habit of a user; moreover, even if a new external device is inserted to actually preempt the screen, it is simple to press a key to send a state switching signal and then preempt the screen, and therefore, the preset access rule may further include:
and when the external equipment with the screen transmission state to be shared exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
At this time, the system architecture of the conference tablet may be as shown in fig. 1c, the types of the adaptation drivers may only include an adaptation driver 1 and (a plurality of) adaptation drivers 2, both the newly accessed external device and the external device whose screen transmission state is to be preempted may be adapted to the adaptation driver 2, the adaptation driver 2 is used to listen to the key event, and when the key event is listened, the screen transmission state of the external device generating the key event is changed to be in sharing by unbinding and binding, and the specific process is similar to the process of unbinding and binding, and is not described herein again.
To better illustrate the above-described preemption screening scheme, it will be explained in detail by two examples.
Example one:
as shown in fig. 5a and fig. 1D, when an external device (hereinafter referred to as a first external device) is newly connected, it is determined whether an external device whose screen transmission state is S in sharing or a to-be-shared device a exists currently, and if the external device does not exist, the first external device may directly transmit a screen, so that the first external device is adapted to the adaptation driver 1(D-a1), and the adaptation driver 1 is bound to the screen transmission driver.
The screen transmission state is external equipment of the S in sharing, and the desktop can be paused in a key pressing mode, so that the screen transmission state is set to be shared A; and the external device with the screen transmission state to be shared A can start to share the desktop in a mode of pressing a key, so that the screen transmission state is set to be shared S. Although the external device switches the screen transmission state between the sharing state S and the state A to be shared in a key pressing mode, the external device is always matched with the adaptive driver 1(D-A1), and the adaptive driver 1 is always bound with the screen transmission driver.
When an external device (hereinafter referred to as a second external device) is newly accessed and a screen-passing state of the external device connected to the conference tablet is an external device (a first external device) of the sharing S, it is set that the second external device needs to seize a screen-passing by pressing a key to send a state switching signal.
The second external device is adapted with the adaptation driver 2(D-a2) whose screen rendering state is to preempt W. The adaptation driver 2 is used for listening to a state switching signal sent by an external device. When the adaptation driver 2 monitors a state switching signal (key event) sent by the second external device, the adaptation driver 2 can enable the adaptation driver 1 to be unbound with the screen transmission driver and the first external device and the adaptation driver 2 to be unbound with the second external device through generating a thread; and then controlling the adaptive driver 1 to be bound with the screen transmission driver and the second external equipment, and controlling the adaptive driver 2 to be bound with the first external equipment. Therefore, the screen transmission state of the first external equipment is changed from S in sharing to W to be preempted; and changing the screen transmission state of the second external equipment from W to be preempted to S in sharing.
Of course, the adaptation driver 2 may also make a decision by the screen transmission application by notifying the screen transmission application of the key event: unbinding the adaptive drive 1 with the first external device and the screen transmission drive, and unbinding the adaptive drive 2 with the second external device; binding the adaptation driver 1 with a screen transmission driver and second external equipment, wherein the screen transmission state of the second external equipment is changed from W to be preempted to S in sharing; and adapting the adaptation driver 2 with the first external equipment, wherein the screen transmission state of the first external equipment is changed from S in sharing to W to be preempted.
Or, when an external device (hereinafter, referred to as a third external device) is newly connected and an external device (a first external device) with a screen passing state of a to-be-shared screen already exists in the external devices connected to the conference tablet, the third external device is set to preempt the screen passing by inserting the device, and in an embodiment of the present invention, the adaptation driver 3(D-a3) is adapted to adapt the external device capable of preempting the screen passing by inserting the device.
And the third external device is adapted with the adaptation drive 3(D-A3), and the screen transmission state of the third external device is to preempt W. The adaptation driver 3 can enable the adaptation driver 1 to be unbound with the screen transmission driver and the first external device through generating threads, and the adaptation driver 3 to be unbound with the third external device; and then controlling the adaptive drive 1 to be bound with the screen transmission drive and the third external equipment, and controlling the adaptive drive 2 to be bound with the first external equipment. The screen transmission state of the first external equipment is changed from A to be shared to W to be preempted; and changing the screen transmission state of the second external equipment from W to be preempted to S in sharing.
Of course, the adaptation driver 3 may also inform the screen transfer application, which makes the decision: unbinding the adaptive drive 1 from the first external device and the screen transmission drive, and unbinding the adaptive drive 3 from the third external device; binding the adaptive drive 1 with a screen transmission drive and a third external device, wherein the screen transmission state of the third external device is changed from W to be preempted to S in sharing; and adapting the adaptation driver 2 with the first external equipment, wherein the screen transmission state of the first external equipment is changed from A to be shared to W to be preempted.
Example two:
as shown in fig. 5b and fig. 1c, when an external device (hereinafter referred to as a first external device) is newly connected, it is determined whether an external device whose screen transmission state is S in sharing or a to-be-shared device a exists currently, and if the external device does not exist, the first external device may directly transmit a screen, so that the first external device is adapted to the adaptation driver 1(D-a1), and the adaptation driver 1 is bound to the screen transmission driver.
The screen transmission state is external equipment of the S in sharing, and the desktop can be paused in a key pressing mode, so that the screen transmission state is set to be shared A; and the external device with the screen transmission state to be shared A can start to share the desktop in a mode of pressing a key, so that the screen transmission state is set to be shared S. Although the external device switches the screen transmission state between the sharing state S and the state A to be shared in a key pressing mode, the external device is always matched with the adaptive driver 1(D-A1), and the adaptive driver 1 is always bound with the screen transmission driver.
When an external device (hereinafter referred to as a second external device) is newly connected, and an external device (a first external device) with a screen transmission state of S in sharing or a to-be-shared state already exists in the external device connected to the conference tablet, that is, the adaptation driver 1 is already occupied by the first external device, the second external device can only be taken over by the adaptation driver 2, and the screen transmission state of the second external device is to-be-preempted W. The second external device needs to preempt the pass screen in such a way that it sends a state switching signal by pressing a key.
The adaptation driver 2 is used for listening to a state switching signal sent by an external device. When the adaptation driver 2 monitors a state switching signal (key event) sent by the second external device, the adaptation driver 2 can enable the adaptation driver 1 to be unbound with the screen transmission driver and the first external device and the adaptation driver 2 to be unbound with the second external device through generating a thread; and then controlling the adaptive driver 1 to be bound with the screen transmission driver and the second external equipment, and controlling the adaptive driver 2 to be bound with the first external equipment. Therefore, the screen transmission state of the first external equipment is changed from S in sharing to W to be preempted; and changing the screen transmission state of the second external equipment from W to be preempted to S in sharing.
Of course, the adaptation driver 2 may also make a decision by the screen transmission application by notifying the screen transmission application of the key event: unbinding the adaptive drive 1 with the first external device and the screen transmission drive, and unbinding the adaptive drive 2 with the second external device; binding the adaptation driver 1 with a screen transmission driver and second external equipment, wherein the screen transmission state of the second external equipment is changed from W to be preempted to S in sharing; and adapting the adaptation driver 2 with the first external equipment, wherein the screen transmission state of the first external equipment is changed from S in sharing to W to be preempted.
The "unconnected N" state of the pass screen depicted in fig. 5a and 5b is mainly for the purpose of making the state machine logically complete, and in fact, after the external device is pulled out, the driver is not needed to adapt to it.
The above description appears to refer to accessing only one or two external devices, but the state machine logic shown in fig. 5a and 5b is still applicable when there are more external devices. Of course, the state machine logic of fig. 5a and 5b only shows the basic functions, and the state machine logic may also be modified according to specific situations, for example, a part of rules is added or deleted, the idea of partially modifying the state machine logic is provided in the foregoing, and of course, other ways may exist, which is not limited in this invention.
The above embodiments can be combined arbitrarily without conflict, and the present invention is not limited to this.
Corresponding to the embodiment of the screen transmission method, the invention also provides an embodiment of the screen transmission device.
The embodiment of the screen transmission device can be applied to a conference flat plate. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. Taking a software implementation as an example, as a logical device, the device is formed by reading a corresponding computer program instruction in the nonvolatile memory into the memory for operation through the processor of the conference tablet where the conference tablet is located. In terms of hardware, as shown in fig. 7, the present invention is a hardware structure diagram of a conference tablet where the screen transmission device is located, and except for the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 7, the conference tablet where the device is located in the embodiment may also include other hardware according to the actual function of the conference tablet, which is not described again.
Referring to fig. 6, a screen transmission device includes:
the acquisition module is used for acquiring the screen transmission state of the external equipment when receiving a state switching signal sent by the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
the setting module is used for setting the screen transmission state of the external equipment to be shared if the screen transmission state of the external equipment is not in the sharing state;
and the receiving module is used for receiving the desktop data which is sent by the external equipment in sharing screen transmission state.
The implementation process of the functions and actions of each module in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed 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 modules can be selected according to actual needs to achieve the purpose of the scheme of the invention. One of ordinary skill in the art can understand and implement it without inventive effort.
Referring to fig. 7, an electronic device includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the screen transmission method according to any one of the preceding claims.
Further, the present invention also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements a screen transmission method as described in any one of the preceding.
Embodiments of the invention may take the form of a computer program product embodied on one or more readable media having program code embodied therein, including but not limited to disk storage, CD-ROM, optical storage, and the like. Computer-usable readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer readable media include, but are not limited to: phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technologies, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic tape storage or other magnetic storage devices, or any other non-transmission medium, may be used to store information that may be accessed by a computing device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (13)
1. A screen transmission method is characterized by comprising the following steps:
when a state switching signal sent by external equipment is received, acquiring the screen transmission state of the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
if the screen transmission state of the external equipment is not in sharing, setting the screen transmission state of the external equipment to be in sharing; the setting of the screen transmission state is realized based on the binding and/or unbinding of the control drive and the external equipment;
receiving desktop data sent by external equipment with the screen transmission state being shared;
wherein, the screen transmission state further comprises:
the method comprises the steps of waiting for preemption, and representing that the external equipment is in a state of waiting for desktop data transmission;
before the step of setting the screen-transferring state of the external device to be shared, the method further comprises:
and if the screen transmission state of the external equipment is the shared external equipment, setting the screen transmission state of the external equipment to be preempted.
2. A screen transfer method as recited in claim 1, wherein the screen transfer state further comprises:
the sharing method comprises the steps of sharing and representing that external equipment is in a state of suspending desktop data transmission;
after the step of acquiring the screen transmission state of the external device when receiving the state switching signal sent by the external device, the method further comprises the following steps:
and when the screen transmission state of the external equipment is in sharing, setting the screen transmission state of the external equipment to be shared.
3. A screen transmission method as claimed in claim 2, wherein after the step of setting the screen transmission state of the external device to be shared when the screen transmission state of the external device is in sharing, the method further comprises:
detecting whether external equipment with a screen transmission state to be preempted exists or not;
if the external device exists, selecting a target external device from the external devices to be preempted according to a preset rule, and setting the screen transmission state of the target external device to be shared.
4. A screen transmission method according to claim 3, wherein the preset rule includes:
when only one external device with a screen transmission state to be preempted exists, taking the external device as a target external device;
and when a plurality of external devices with screen transmission states to be preempted exist, the earliest or latest accessed screen transmission state is taken as the external device to be preempted as the target external device.
5. A screen transfer method as claimed in claim 3, wherein before the step of setting the screen transfer state of the target external device to be shared, the method further comprises:
and unbinding the external equipment with the screen transmission state to be shared with the drive, setting the screen transmission state to be preempted, and binding the target external equipment with the drive.
6. A screen transfer method as claimed in claim 2, wherein the screen transfer method further comprises:
monitoring an external equipment access event of each communication interface;
setting a screen transmission state for the accessed external equipment according to a preset access rule;
the preset access rule comprises the following steps:
and when the screen transmission state of the external equipment in sharing exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
7. The screen-passing method of claim 6, wherein the preset access rule further comprises:
and when the external equipment with the screen transmission state to be shared exists, setting the screen transmission state of the newly accessed external equipment to be preempted.
8. The screen-passing method of claim 6, wherein the preset access rule further comprises:
and when the screen transmission state is the external equipment to be shared, setting the screen transmission state of the newly accessed external equipment to be shared.
9. The screen-transferring method of claim 8, wherein the step of setting the screen-transferring state of the newly-accessed external device to be shared when there is an external device to be shared in the screen-transferring state comprises:
and setting the screen transmission state of the external equipment with the screen transmission state to be shared as to-be-preempted, and setting the screen transmission state of the newly accessed external equipment as in sharing.
10. A screen transfer method as claimed in claim 9, wherein before the step of setting the screen transfer state of the newly accessed external device to be shared, the method further comprises:
and unbinding the external equipment with the screen transmission state to be shared with the drive, and binding the newly accessed external equipment with the drive.
11. A screen transfer device, comprising:
the acquisition module is used for acquiring the screen transmission state of the external equipment when receiving a state switching signal sent by the external equipment; wherein, pass the screen state and include: in the sharing process, the desktop data transmission state is used for representing that the external equipment is in a desktop data transmission state;
the setting module is used for setting the screen transmission state of the external equipment to be shared if the screen transmission state of the external equipment is not in the sharing state; the setting of the screen transmission state is realized based on the binding and/or unbinding of the control drive and the external equipment;
the receiving module is used for receiving desktop data sent by external equipment with the screen transmission state being shared;
wherein, the screen transmission state further comprises:
the method comprises the steps of waiting for preemption, and representing that the external equipment is in a state of waiting for desktop data transmission;
before the step of setting the screen-transferring state of the external device to be shared, the method further comprises:
and if the screen transmission state of the external equipment is the shared external equipment, setting the screen transmission state of the external equipment to be preempted.
12. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the screen transfer method of any one of claims 1-10.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a screen transfer method according to any one of claims 1 to 10.
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| CN201810283045.2A CN108664229B (en) | 2018-04-02 | 2018-04-02 | Screen transmission method and device, electronic equipment and computer readable storage medium |
| PCT/CN2018/114052 WO2019192178A1 (en) | 2018-04-02 | 2018-11-06 | Screen transmission method and apparatus, electronic device, and computer-readable storage medium |
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| CN201810283045.2A CN108664229B (en) | 2018-04-02 | 2018-04-02 | Screen transmission method and device, electronic equipment and computer readable storage medium |
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| CN108664229B (en) * | 2018-04-02 | 2020-10-02 | 广州视源电子科技股份有限公司 | Screen transmission method and device, electronic equipment and computer readable storage medium |
| CN110505516A (en) * | 2019-05-15 | 2019-11-26 | 中海油信息科技有限公司 | A kind of throwing screen control method, device and system |
| CN110442366B (en) * | 2019-08-09 | 2021-06-15 | 广州视源电子科技股份有限公司 | Screen transmission processing method, device, equipment and storage medium |
| CN113360108B (en) * | 2020-03-05 | 2022-09-09 | 荣耀终端有限公司 | Screen projection connection control method and electronic equipment |
| CN115220670A (en) * | 2021-04-16 | 2022-10-21 | 广州视源电子科技股份有限公司 | Screen projection control method, storage medium and communication equipment |
| CN114007035B (en) * | 2021-09-24 | 2023-12-26 | 深圳壹秘科技有限公司 | Conference data sharing system and method |
| CN114501120B (en) * | 2022-01-11 | 2023-06-09 | 烽火通信科技股份有限公司 | Multi-terminal wireless screen switching method and electronic equipment |
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