CN113138739A

CN113138739A - Screen projection method, system, device, electronic equipment and storage medium

Info

Publication number: CN113138739A
Application number: CN202110533978.4A
Authority: CN
Inventors: 秦志雷
Original assignee: Beijing Zitiao Network Technology Co Ltd
Current assignee: Beijing Zitiao Network Technology Co Ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-07-20
Anticipated expiration: 2041-05-17
Also published as: CN113138739B

Abstract

The embodiment of the disclosure discloses a screen projection method, a system, a device, an electronic device and a storage medium, wherein the method comprises the following steps: the information server receives an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of the information to be projected, an identity identifier of the display end and signature information; the information identification, the identity identification and the signature information are determined based on a screen projection request of a screen projection end and are issued to a display end associated with the screen projection end; checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking; the preset information-identity authority group requests the establishment of an information server based on a screen projection request; if so, returning the information to be projected corresponding to the information identifier to the display end so that the display end can display the information to be projected. The screen projection system has the advantages that the definition of information display can be guaranteed, the screen projection operation can be conveniently achieved, the screen projection efficiency is high, and the user experience is good.

Description

Screen projection method, system, device, electronic equipment and storage medium

Technical Field

The embodiment of the disclosure relates to the technical field of communication, and in particular, to a screen projection method, a system, a device, an electronic device and a storage medium.

Background

The screen projection refers to a technology of projecting information in a screen projection end to a display end for displaying. The techniques are generally applicable to a scene where a "small screen" device projects to a "large screen" device to enhance the visual experience of the user.

In a conventional screen projection method, a screen image of a screen projection end is generally sent to a display end for displaying in a video streaming manner. The method is limited by the large data volume of the video stream, and in order to ensure the fluency of the video stream at the display end, the picture displayed at the display end is usually the picture with lower definition after the video stream is compressed.

Disclosure of Invention

The embodiment of the disclosure provides a screen projection method, a screen projection system, a screen projection device, an electronic device and a storage medium, which not only can ensure the definition of information display, but also can realize screen projection operation conveniently and fast, and have high screen projection efficiency and good user experience.

In a first aspect, an embodiment of the present disclosure provides a screen projection method, applied to an information server, including:

receiving an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of information to be screened, an identity identifier of the display end and signature information; the information identifier, the identity identifier and the signature information are determined based on a screen projection request of a screen projection end and are issued to the display end associated with the screen projection end;

checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking; the preset information-identity authority group requests the information server to be established based on the screen projection request;

if so, returning the information to be screen-projected corresponding to the information identifier to the display end, so that the display end displays the information to be screen-projected.

In a second aspect, an embodiment of the present disclosure further provides a screen projection method, applied to a communication server, including:

responding to a screen projection request sent by a screen projection end, and determining an information identifier of information to be projected, an identity identifier of a display end and signature information;

sending an authority establishing request to an information server, wherein the authority establishing request comprises the information identifier and the identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and the communication range identifier;

and issuing the information identifier, the identity identifier and the signature information to a display end so that the display end sends an information acquisition request containing the information identifier, the identity identifier and the signature information to the information server, then enabling the information server to check the signature information, judging whether the information identifier is matched with the identity identifier or not according to the information-identity authority group when the signature passes the check, and returning screen information to be projected corresponding to the information identifier to the display end when the information identifier is matched with the identity identifier so that the display end displays the screen information to be projected. In a third aspect, an embodiment of the present disclosure further provides a screen projection system, including:

the system comprises a communication server, an information server and a display end;

the communication server is used for responding to a screen projection request sent by a screen projection end and determining an information identifier of information to be projected, an identity identifier of the display end and signature information;

the communication server is further configured to send an authority establishment request to the information server, where the authority establishment request includes the information identifier and the identity identifier; the information identifier, the identity identifier and the signature information are sent to the display end;

the information server is used for establishing an information-identity authority group according to the information identifier and the identity identifier;

the display terminal is used for sending an information acquisition request to the information server, wherein the information acquisition request comprises the information identifier, the identity identifier and the signature information;

the information server is also used for checking the signature of the signature information and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking; if so, returning the information to be projected corresponding to the information identifier to the display end;

the display end is also used for displaying the information of the screen to be projected.

In a fourth aspect, an embodiment of the present disclosure further provides a screen projection apparatus integrated in an information server, including:

the first request receiving module is used for receiving an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of information to be projected, an identity identifier of the display end and signature information; the information identifier, the identity identifier and the signature information are determined based on a screen projection request of a screen projection end and are issued to the display end associated with the screen projection end;

the authority judgment module is used for checking the signature information and judging whether the information identifier is matched with the identity identifier or not according to a preset information-identity authority group when the signature passes the checking; the preset information-identity authority group requests the information server to be established based on the screen projection request;

and the information returning module is used for returning the information to be screen-projected corresponding to the information identifier to the display end if the information identifier is matched with the identity identifier, so that the display end displays the information to be screen-projected.

In a fifth aspect, an embodiment of the present disclosure further provides a screen projection apparatus integrated in a communication server, including:

the second request receiving module is used for responding to a screen projection request sent by a screen projection end and determining an information identifier of the information to be projected, an identity identifier of a display end and signature information;

the authority establishing module is used for sending an authority establishing request to an information server, wherein the authority establishing request comprises the information identifier and the identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and the communication range identifier;

and the information issuing module is used for issuing the information identifier, the identity identifier and the signature information to a display end so as to enable the display end to send an information acquisition request containing the information identifier, the identity identifier and the signature information to the information server, further enable the information server to check the signature information, judge whether the information identifier is matched with the identity identifier according to the information-identity permission group when the signature passes through the verification, and return screen information to be projected corresponding to the information identifier to the display end when the information identifier is matched with the identity identifier so as to enable the display end to display the screen information to be projected.

In a sixth aspect, an embodiment of the present disclosure further provides an electronic device, where the electronic device includes:

one or more processors;

a storage device for storing one or more programs,

when executed by the one or more processors, cause the one or more processors to implement a screen projection method as in any of the embodiments of the present disclosure.

In a seventh aspect, the disclosed embodiments also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are used to perform the screen projection method according to any one of the disclosed embodiments.

According to the technical scheme of the embodiment, an information server receives an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of information to be projected, an identity identifier of the display end and signature information; the information identification, the identity identification and the signature information are determined based on a screen projection request of a screen projection end and are issued to a display end associated with the screen projection end; checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking; the preset information-identity authority group requests the establishment of an information server based on a screen projection request; if so, returning the information to be projected corresponding to the information identifier to the display end so that the display end can display the information to be projected.

The information can be displayed more clearly by directly acquiring the information for displaying, rather than acquiring the video stream containing the information for displaying. In addition, aiming at a certain screen projection request initiated by the screen projection end, the signature information can be checked through the information server, whether the identity mark of the display end has the access authority of the information to be projected is determined according to a preset information-identity authority group, and the screen projection end is not required to carry out authorization operation, so that the screen projection operation is conveniently realized, the screen projection efficiency is improved, and the screen projection experience of a screen projection end user is improved.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

Fig. 1 is a schematic flowchart of a screen projection method according to a first embodiment of the disclosure;

fig. 2 is a schematic flowchart of a screen projection method according to a second embodiment of the disclosure;

fig. 3 is a schematic flowchart of a screen projection method according to a third embodiment of the present disclosure;

fig. 4 is a signaling diagram between devices in a screen projection system according to a fourth embodiment of the present disclosure;

fig. 5 is a signaling diagram among devices in a screen projection system according to a fifth embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a screen projection apparatus according to a sixth embodiment of the disclosure;

fig. 7 is a schematic structural diagram of a screen projection apparatus according to a seventh embodiment of the disclosure;

fig. 8 is a schematic structural diagram of an electronic device according to an eighth embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order, and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.

The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

Example one

Fig. 1 is a flowchart illustrating a screen projection method according to a first embodiment of the present disclosure, where the first embodiment of the present disclosure is applicable to a screen projection situation, for example, a local document screen projection situation in a conference room. The method may be performed by a screen projection device, which may be implemented in software and/or hardware, and which may be configured in an electronic device, such as an information server.

As shown in fig. 1, the screen projection method provided in this embodiment is applied to an information server, and includes:

s110, receiving an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of the information to be projected, an identity identifier of the display end and signature information.

The screen projection method provided by the embodiment relates to a novel screen projection method. The emerging screen projection method can comprise the following steps: the screen projection end sends a link of information to be projected to the display end through the communication application installed on the screen projection end; correspondingly, the display end displays the authorization prompt information to prompt the screen projection end to carry out authorization operation; and after the authorization is passed, the display end acquires and displays information corresponding to the link according to the identity of the communication application account of the screen projection end.

Compared with the traditional screen projection method, the emerging screen projection method can directly acquire information for displaying, but not acquire a video stream containing the information for displaying, so that the information can be displayed more clearly. However, although the emerging method can enable information to be displayed more clearly, when a plurality of pieces of information need to be projected, a user at a screen projection end needs to perform authorization operation repeatedly, so that the operation is complicated, the screen projection efficiency is low, and the user experience is poor.

The screen projection method provided by the embodiment of the disclosure can realize more convenient screen projection operation on the basis of ensuring clear information display, improves screen projection efficiency, and improves experience of a screen projection end user.

In the embodiment of the disclosure, the information identifier, the identity identifier and the signature information are determined based on a screen projection request of a screen projection end and are issued to a display end associated with the screen projection end.

The information to be projected may include, for example, a document including at least one element of text, graphics, images, audio, video, and the like, and the format of the document may be, for example, a format of Word, Excel, PPT, html, or the like. The information to be projected can be stored in the information server, and the storage position of the information to be projected or other information uniquely corresponding to the storage position can be used as an information identifier of the information to be projected, that is, the information identifier can be used for indicating the storage position of the document. For example, the information identifier of the information to be screened is, for example, a Uniform Resource Locator (URL) of the information server.

When the screen projection end needs to project the information to be projected to the display end, the information identifier of the information to be projected can be transmitted to the display end through the communication server, so that the display end requests the information to be projected corresponding to the information identifier from the information server. In addition, in order to ensure the security of the information to be screen-projected, that is, to ensure that the screen-projected information can only be acquired by the display terminal with access right, the display terminal needs to carry the identity of the display terminal and the signature information when requesting the information to be screen-projected from the information server.

The identity identifier may be considered as an identity used for representing the exhibition end, and may be, for example, an exhibition end identifier, or a communication range identifier of a communication range to which the exhibition end belongs. The display end identifier is, for example, an equipment code of the equipment to which the display end belongs, or an account number of the display end, and can be used for representing the individual identity of the display end. The communication range can be considered as a range formed by clients participating in communication, for example, a range formed by a screen-throwing end and a display end participating in an audio-video conference can be used for representing the group identity of the display end. The communication range identification can be obtained when the communication server creates a communication range comprising a screen projection end and a display end.

The signature information can be regarded as encrypted information used for verifying whether the identity of the screen projection end is true or not, and the signature information can be obtained by encrypting the identity or other information uniquely corresponding to the identity through the communication server. The identity and the signature information carried in the information acquisition request can be used as Token sent to the display terminal by the communication server for authority authentication of the display terminal.

In the embodiment of the present disclosure, the information identifier, the identity identifier, and the signature information are determined based on a screen projection request of a screen projection terminal, and are issued to a display terminal associated with the screen projection terminal, and for example, the method may include: the communication server responds to a screen projection request of a screen projection end, analyzes an information identifier transmitted by the screen projection end, determines an identity identifier of a display end and generates signature information; and issuing the information identifier, the identity identifier and the signature information to a display end corresponding to the identity identifier. Correspondingly, the display end can carry the information identification, the identity identification and the signature information to the information acquisition request so as to request the information to be projected in the information server.

And S120, checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking.

The process of verifying the signature of the signature information may be regarded as a process of decrypting the signature information, and the encryption process corresponding to the decryption process and the signature information may be regarded as an inverse process. When the identity identifier in the verification information acquisition request is true according to the decrypted signature information, the verification tag can be considered to pass; and when the identity identifier in the verification information acquisition request is false according to the decrypted signature information, the signature verification can be considered to be failed. And when the information server fails to check the label, the prompt information of the failure of the label checking can be fed back to the display end.

Through checking the signature of the signature information, the display end with different identities of the screen projection end can be effectively prevented, and the identity of the information acquisition request is only tampered, so that the condition of the access authority of the information to be projected is expected to be obtained, and the safety of the information to be projected is improved.

In the embodiment of the present disclosure, the preset information-identity permission group requests the information server to establish based on the screen-casting request, and may include: the communication server responds to the screen projection request and requests the information server to establish the screen projection request. Before issuing the information identifier, the identity identifier and the signature information to the display end, the communication server can also request the information server to establish an information-identity authority group, so that the information server establishes the information-identity authority group in advance before receiving the information acquisition request.

By establishing the information-identity authority group in advance, the authority relationship between the identity identification of the display end and the information identification of the information to be screen-projected can be set so as to judge whether the display end corresponding to the identity identification has the authority to access the information to be screen-projected corresponding to the information identification, thereby realizing the authentication of the display end and improving the safety of the information to be screen-projected.

And S130, if so, returning the information to be projected corresponding to the information identifier to the display end so that the display end displays the information to be projected.

In the embodiment of the disclosure, when the information server determines that the information identifier matches the identity identifier according to the preset information-identity authority group, the display terminal may be considered to have the access authority of the information to be screen-launched. At this time, the information server can search the information of the screen to be projected corresponding to the information identifier and return the information of the screen to be projected to the display end, so that the display end displays the information of the screen to be projected.

After the screen projection end sends a screen projection request to the communication server, the communication server can request the information server to establish an information-identity authority group according to the screen projection request and send corresponding information to a display end associated with the screen projection end. Furthermore, the display end can be authenticated through the information server, so that the screen projecting end is prevented from performing authorization operation on the display end after a certain screen projecting request is initiated, and the screen projecting operation is more convenient. Especially, when a screen projection end needs to project a plurality of pieces of information in the same conference, the screen projection end user can be prevented from executing repeated authorized operation, the screen projection efficiency is greatly improved, and the experience of the screen projection end user is improved.

In some alternative implementations, the signature information is generated by the communication server based on signing the identity; correspondingly, the signature verification of the signature information comprises the following steps: and checking the signature information according to the identity identification.

In these alternative implementations, the communication server may directly sign and encrypt the identity; correspondingly, when the communication server verifies and decrypts the signature information, whether the decryption result is consistent with the identity identifier in the information acquisition request or not can be judged, so that the signature information is verified. When the decryption result is consistent with the identity identifier in the information acquisition request, the verification tag is considered to pass; and when the decryption result is inconsistent with the identity in the information acquisition request, the verification tag is considered to be failed.

In some further implementations, verifying the signature information based on the identity includes: decrypting the signature information by using a preset public key and judging whether a decryption result is consistent with the identity mark; the preset public key is matched with a preset private key used when the communication server signs the identity.

In these further implementations, the communication server may be provided with a unique public-private key pair, and a preset public key of the public-private key pair may be sent to the information server in advance. Therefore, the signature information can be generated by using the preset private key at the communication server, and the signature information can be decrypted by using the matched preset public key at the information server.

In some optional implementations, the screen projection method can be applied to a scene of screen projection in a conference room; correspondingly, the display terminal is display equipment in the conference room system.

In these alternative implementations, the screen projection method can be applied to a scene of screen projection in a conference room, that is, a scene of screen projection in a local conference room. The screen projection end can be a mobile phone or a notebook computer of a user, for example; the communication server may be, for example, a Video Conferencing (VC) server; the information server may be a server that provides a document service (e.g., a document service for storing documents); the display terminal may be a display device in a conference room system, such as a television or a projector in the conference room system.

When a user holds the screen projection end to carry out a conference room, the information in the screen projection end can be projected to the display equipment of the conference room through the screen projection method provided by the embodiment, and document sharing in local screen projection can be conveniently and quickly realized. In addition, by projecting the 'small screen' device to the 'large screen' device, the interaction efficiency and the visual experience of the users in the conference can be improved.

Example two

The embodiments of the present disclosure and various alternatives in the screen projection method provided in the above embodiments may be combined. The screen projection method provided by the embodiment elaborates the establishing step, the updating step and the clearing step of the information-identity permission group. The information server responds to the authority establishing request of the communication server to establish the information-identity authority group, responds to the authority updating request of the communication server to update the established information-identity authority group, and can realize the setting and updating of the acquisition authority of the information to be projected on the screen for the display terminal. The information server responds to the permission clearing request, and clears the information-identity permission group, so that the display end can obtain the information to be screen-thrown again after the screen-throwing process is completed (for example, after a conference is finished), the leakage of the information to be screen-thrown is avoided, and the information safety is ensured.

Fig. 2 is a schematic flow chart of a screen projection method according to a second embodiment of the disclosure. As shown in fig. 2, the screen projection method provided in this embodiment includes:

s210, receiving an authority establishing request sent by the communication server, wherein the authority establishing request comprises an information identifier and an identity identifier.

In this embodiment, the communication server may respond to the screen-projecting request of the screen-projecting end, analyze the information identifier transmitted by the screen-projecting end, and determine the identity identifier of the display end. The identity identifier may include a communication range identifier of a communication range created by the communication server according to the screen-throwing end identifier and the connection information of the display end carried in the screen-throwing request.

The process of determining the communication range identifier by the communication server according to the screen projection request may include, for example:

step 1, the communication server analyzes the connection information of the screen throwing end identification and the display end carried in the screen throwing request.

The screen-casting end identifier is, for example, a device code of a device to which the screen-casting end belongs, or an account number of the screen-casting end. The connection information of the display end may be information that is periodically updated by the communication server and is sent to the display end, for example, information such as screen-projecting codes or ultrasonic waves.

And the display end can play the connection information after receiving the connection information. When the connection information is a screen projection code, the screen projection end can receive the screen projection code input by a user; when the connection information is ultrasonic waves, the screen projection end can automatically receive the ultrasonic waves, so that the screen projection end receives the connection information of the display end and carries the connection information to the screen projection request.

And 2, the communication server can search the corresponding display end identification based on the connection information.

Because the connection information of the display end is generated by the communication server, the current corresponding relation between the display end identification and the connection information can be recorded during generation, and the display end identification corresponding to the connection information can be searched according to the current corresponding relation.

And 3, creating a communication range according to the screen projection end identifier and the display end identifier, and generating a communication range identifier of the communication range.

The communication server can use the communication range identification as the identity identification of the display end and the screen projection end, and the group identity representing the display end and the screen projection end is used as the client end for communication in the communication range corresponding to the communication range identification.

After responding to the screen projection request and determining the information identifier and the identity identifier, the communication server can generate an authority establishing request carrying the information identifier and the identity identifier and send the authority establishing request to the information server, so that the information server establishes an information-identity authority group according to the information identifier and the identity identifier carried in the request.

S220, establishing an information-identity authority group according to the information identifier and the identity identifier.

In this embodiment, the information server may analyze the information identifier and the identity identifier in the permission establishment request, and may establish an information-identity permission group corresponding to the information identifier and the identity identifier in a manner of writing a record in a preset storage location. Wherein, the record comprises information identification, identity identification and the record of the corresponding relation.

And S230, receiving an information acquisition request sent by the display end, wherein the information acquisition request comprises an information identifier of the information to be projected, an identity identifier of the display end and signature information.

In this embodiment, the information identifier, the identity identifier, and the signature information are determined based on a screen projection request of a screen projection terminal, and are issued to a display terminal associated with the screen projection terminal.

S240, checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking.

And S250, if so, returning the information to be screen-projected corresponding to the information identifier to the display end so that the display end displays the information to be screen-projected.

The information server can realize the pre-establishment of the information-identity authority group by receiving the authority establishment request containing the identity identification and the information identification, so that the display end can be authenticated when the information acquisition request sent by the display end is received.

In some optional implementations, after the information-identity permission group is established, the method may further include: receiving an authority updating request sent by a communication server, wherein the authority updating request comprises an identity identifier and an updated information identifier; wherein the updated information identifier is generated based on the new screen-casting request; and updating the established information-identity authority group according to the identity identification and the updated information identification.

When the communication server receives a new screen projection request sent by a screen projection end, an authority updating request can be sent to the information server, and the authority updating request comprises an identity identifier and an updated information identifier; and the communication server can send the updated information identifier to the display terminal.

When receiving the authority updating request, the information server can establish a new information-identity authority group according to the identity and the updated information identifier, and replace the established information-identity authority group containing the identity by using the newly established information-identity authority group; or adding the updated information identifier to the established information-identity authority group containing the identity identifier.

The establishing of the new information-identity authority group may be writing a new record containing the identity identifier and the updated information identifier in a preset storage location. Correspondingly, replacing the established information-identity permission group containing the identity with the newly established information-identity permission group may include: and replacing the original record containing the identity with the new record. Therefore, the display end can have the latest acquisition permission of the information to be projected.

Wherein, adding the updated information identifier to the established information-identity authority group containing the identity identifier may include: and searching the original record containing the identity identifier, and adding the corresponding relation between the identity identifier and the updated information identifier while keeping the corresponding relation between the identity identifier and the information identifier in the original record so as to add the updated information identifier to the established information-identity authority group containing the identity identifier. Therefore, when the screen projection end switches the screen projection among the plurality of pieces of screen information to be projected, the display end can have all the acquisition authorities of the plurality of pieces of screen information to be projected, and the operation of repeatedly updating the authority group by the information server is avoided.

The display end can send a new information acquisition request to the information server when receiving the updated information identifier, wherein the new information acquisition request comprises the updated information identifier, the identity identifier and the signature information. Correspondingly, the information server can check the signature of the signature information, and when the signature passes through the check, whether the updated information identifier is matched with the identity identifier is judged according to the updated information-identity authority group; if so, returning the information to be projected corresponding to the updated information identifier to the display end so as to display the new information to be projected by the display end.

In these optional implementation manners, the information server may respond to the permission update request of the communication server, update the established information-identity permission group, and can implement setting and updating the acquisition permission of the information to be screened for the display side.

In some optional implementations, after the information-identity permission group is established, the method further includes: receiving an authority clearing request sent by a communication server, wherein the authority clearing request comprises an identity; and clearing the established information-identity authority group containing the identity identification according to the authority clearing request.

The communication server can also receive a screen-throwing ending request sent by a screen throwing end, wherein the screen-throwing ending request can carry the identity of the display end; and can respond to and throw the end request of the screen, send the permission comprising this identity to clear the request to the information server. Correspondingly, the information server can search the information-identity authority group containing the identity according to the identity carried in the authority clearing request and clear the information-identity authority group.

Illustratively, when an audio and video conference formed by the screen projecting end and the display end is finished, the screen projecting end can send a screen projection finishing request to the communication server, so that the communication server informs the information server to perform the operation of clearing the information-identity permission group, and therefore the display end can be prevented from obtaining and displaying the screen projection information again in the conference process after the conference is finished, and the information security is ensured.

In the optional implementation modes, the information server responds to the permission clearing request to clear the information-identity permission group, so that the display terminal has no right to obtain the information to be screen-thrown again after the screen-throwing process is completed, the leakage of the information to be screen-thrown is avoided, and the information safety is ensured.

The technical scheme of the embodiment of the disclosure elaborates the establishing step, the updating step and the clearing step of the information-identity authority group. The information server responds to the authority establishing request of the communication server to establish the information-identity authority group, responds to the authority updating request of the communication server to update the established information-identity authority group, and can realize the setting and updating of the acquisition authority of the information to be projected on the screen for the display terminal. The information server responds to the permission clearing request, and clears the information-identity permission group, so that the display end can obtain the information to be screen-thrown again after the screen-throwing process is completed (for example, after a conference is finished), the leakage of the information to be screen-thrown is avoided, and the information safety is ensured.

In addition, the screen projection method provided by the embodiment of the present disclosure is the same as the screen projection method provided by the above embodiment, and the technical details that are not described in detail in the embodiment can be referred to the above embodiment, and the same technical features have the same beneficial effects in the embodiment and the above embodiment.

EXAMPLE III

Fig. 3 is a schematic flow chart of a screen projection method according to a third embodiment of the present disclosure. The embodiment of the disclosure is suitable for the screen projection situation, for example, the screen projection situation of a document local to a conference room. The method may be performed by a screen projection device, which may be implemented in software and/or hardware, which may be configured in an electronic device, such as in a communication server.

As shown in fig. 3, the screen projection method provided by this embodiment is applied to a communication server, and includes:

s310, responding to a screen projection request sent by a screen projection end, and determining an information identifier of the information to be projected, an identity identifier of a display end and signature information.

Wherein, the screen projection information can comprise documents; correspondingly, the information identifier of the information to be projected is used for indicating the storage position of the document. The identity identifier may be considered as an identity used for representing the exhibition end, and may be, for example, an exhibition end identifier, or a communication range identifier of a communication range to which the exhibition end belongs. The signature information can be regarded as encrypted information used for verifying whether the identity of the screen projection end is true or not, and the signature information can be obtained by encrypting the identity or other information uniquely corresponding to the identity through the communication server. The identity and the signature information carried in the information acquisition request can be used as Token sent to the display terminal by the communication server for authority authentication of the display terminal.

The communication server responds to a screen projection request of the screen projection end, analyzes the information identification transmitted by the screen projection end, determines the identity identification of the display end and generates signature information.

S320, sending an authority establishing request to the information server, wherein the authority establishing request comprises an information identifier and an identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and the communication range identifier.

The information server can analyze the information identifier and the identity identifier in the authority establishing request, and can establish an information-identity authority group corresponding to the information identifier and the identity identifier in a mode of writing a record in a preset storage position. Wherein, the record comprises information identification, identity identification and the record of the corresponding relation.

S330, the information identification, the identity identification and the signature information are issued to a display end, so that the display end sends an information acquisition request containing the information identification, the identity identification and the signature information to an information server, the information server checks the signature information, whether the information identification is matched with the identity identification is judged according to an information-identity authority group when the signature passes, and screen information to be projected corresponding to the information identification is returned to the display end when the information identification is matched with the identity identification, so that the display end displays the screen information to be projected.

When the information server judges that the information identifier is matched with the identity identifier according to a preset information-identity authority group, the display terminal can be considered to have the access authority of the information to be screen-thrown. At this time, the information server can search the information of the screen to be projected corresponding to the information identifier and return the information of the screen to be projected to the display end, so that the display end displays the information of the screen to be projected.

In some optional implementations, the identity identifier includes a communication range identifier of a communication range to which the display end belongs; and, the communication range identification is generated by: analyzing the connection information of the screen projection end identification and the display end in the screen projection request; and acquiring a display end identifier corresponding to the connection information, creating a communication range according to the screen projection end identifier and the display end identifier, and generating a communication range identifier.

The communication server can update the connection information of the display end periodically and send the updated connection information to the display end, so that the display end transmits the connection information to the screen projection end.

The communication server can avoid screen projection abnormity and screen projection information leakage caused by screen projection abnormality of the screen projection end caused by screen projection information to be projected into the original screen projection end according to the original connection information after the screen projection process (for example, after a meeting is finished) is completed by periodically updating the connection information.

The connection information is, for example, a screen-projecting code or ultrasonic information. And the display end can play the connection information after receiving the connection information. When the connection information is a screen projection code, the screen projection end can receive the screen projection code input by a user; when the connection information is ultrasonic waves, the screen projection end can automatically receive the ultrasonic waves, so that the screen projection end receives the connection information of the display end and carries the connection information to the screen projection request.

Because the connection information of the display end is generated by the communication server, the current corresponding relation between the display end identification and the connection information can be recorded during generation. The communication server can search the display end identification corresponding to the connection information according to the current corresponding relation. Furthermore, a communication range can be created according to the screen projection end identifier and the display end identifier, and a communication range identifier of the communication range is generated.

In some optional implementations, the screen projection method may further include: responding to a new screen projection request sent by a screen projection end, and determining an updated information identifier; sending an authority updating request to the information server, wherein the authority updating request comprises an identity identifier and an updated information identifier, so that the information server updates the established information-identity authority group according to the identity identifier and the updated information identifier; and issuing the updated information identifier to the display end so that the display end acquires and displays the information to be projected corresponding to the updated information identifier.

In some optional implementations, the screen projection method may further include: receiving a screen projection finishing request sent by a screen projection end, wherein the screen projection finishing request can include an identity of a display end; and sending an authority clearing request to the information server according to the screen projection ending request, wherein the authority clearing request can also contain an identity so that the information server clears the established information-identity authority group containing the identity according to the authority clearing request.

In some alternative implementations, the signature information is generated by: signing the identity identification to generate signature information; correspondingly, the information server checks the signature of the signature information, and the method comprises the following steps: and enabling the information server to check the signature of the signature information according to the identity identification.

In some further implementations, causing the information server to verify the signature of the signature information according to the identity includes: enabling the information server to decrypt the signature information by using a preset public key and judging whether the decryption result is consistent with the identity mark; if yes, the signature passes the verification; the preset public key is matched with a preset private key used when the communication server signs the identity.

According to the technical scheme of the embodiment, the communication server responds to a screen projection request sent by a screen projection end and determines an information identifier of information to be projected, an identity identifier of a display end and signature information; sending an authority establishing request to an information server, wherein the authority establishing request comprises an information identifier and an identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and a communication range identifier; and issuing the information identifier, the identity identifier and the signature information to a display end so that the display end requests and displays the information to be projected.

The screen projection method provided by the embodiment of the disclosure is the same as the screen projection method provided by the above embodiment, and the technical details which are not described in detail in the embodiment can be referred to the above embodiment, and the same technical features have the same beneficial effects in the embodiment and the above embodiment.

Example four

Fig. 4 is a signaling diagram between devices in a screen projection system according to a fourth embodiment of the disclosure. The screen projection system provided by the embodiment of the disclosure is suitable for screen projection, for example, suitable for screen projection of documents local to a conference room.

As shown in fig. 4, the screen projection system includes: communication server, information server and show end. The signaling process among the devices in the screen projection system comprises the following steps:

and S1, the screen projection terminal sends a screen projection request to the communication server.

S2, the communication server responds to the screen projection request and determines the information identification of the information to be projected, the identity identification of the display terminal and the signature information.

The information to be projected comprises a document; correspondingly, the information identifier of the information to be projected is used for indicating the storage position of the document.

The identity identification comprises a communication range identification of a communication range to which the display end belongs; and, the communication range identification is generated by: analyzing the connection information of the screen projection end identification and the display end in the screen projection request; and acquiring a display end identifier corresponding to the connection information, creating a communication range according to the screen projection end identifier and the display end identifier, and generating a communication range identifier.

The communication server can also update the connection information of the display end periodically and send the updated connection information to the display end, so that the display end transmits the connection information to the screen projection end.

S3, the communication server sends an authority establishing request to the information server, and the authority establishing request comprises an information identifier and an identity identifier.

And S4, the information server establishes an information-identity authority group according to the information identifier and the identity identifier.

And S5, the communication server issues the information identifier, the identity identifier and the signature information to the display terminal.

The S4 and S5 have no strict timing relationship, and may be performed first for the S4 step, first for the S5 step, or both steps.

S6, the display terminal sends an information acquisition request to the information server, and the information acquisition request comprises an information identifier, an identity identifier and signature information.

And S7, the information server checks the signature information, and when the signature passes the check, whether the information identifier is matched with the identity identifier is judged according to a preset information-identity authority group.

And S8, if the information identifier is judged to be matched with the identity identifier, the information server returns the information to be projected corresponding to the information identifier to the display terminal.

And S9, displaying the information to be projected by the display terminal.

In some optional implementation manners, the communication server creates a communication range identifier of the communication range according to the screen-throwing end identifier and the connection information of the display end carried in the screen-throwing request.

In some optional implementations, verifying the signature information according to the identity includes: decrypting the signature information by using a preset public key and judging whether a decryption result is consistent with the identity mark; the preset public key is matched with a preset private key used when the communication server signs the identity.

In the screen projecting system provided by the embodiment of the disclosure, after the screen projecting end sends the screen projecting request to the communication server, the communication server can request the information server to establish an information-identity permission group according to the screen projecting request, and issue corresponding information to the associated display end. Furthermore, the display end can be authenticated through the information server, so that the operation that the screen projection end authorizes again is avoided, and the screen projection operation is more convenient. Especially, when the screen projection end needs to project a plurality of information, the screen projection end user can be prevented from executing repeated authorized operation, the screen projection efficiency is greatly improved, and the user experience is improved.

In addition, the screen projection system provided by the embodiment of the disclosure and the screen projection method provided by the embodiment belong to the same disclosure concept, and technical details which are not described in detail in the embodiment can be referred to the embodiment, and the embodiment has the same beneficial effects as the embodiment.

EXAMPLE five

The embodiments of the present disclosure and various alternatives in the screen projection system provided in the above embodiments may be combined. The screen projection system provided by this embodiment describes in detail the steps of projecting the new information to be projected after the screen projection of the information to be projected is completed for the first time, and the step of clearing the information-identity permission group. The information server responds to the authority updating request of the communication server, and updates the established information-identity authority group, so that the acquisition authority for updating the information to be screened for the display terminal can be realized. The information server responds to the permission clearing request, and clears the information-identity permission group, so that the display end can obtain the information to be screen-thrown again after the screen-throwing process is completed (for example, after a conference is finished), the leakage of the information to be screen-thrown is avoided, and the information safety is ensured.

Fig. 5 is a signaling diagram between devices in a screen projection system according to a fifth embodiment of the present disclosure. Referring to fig. 5, after the screen projection system first finishes screen projection of the information to be screen projected, a signaling flow between the devices may further include:

and S10, the screen projection terminal sends a new screen projection request to the communication server, and the new screen projection request contains the updated information identification.

And S11, the communication server responds to the new screen projection request and sends a permission updating request to the information server, wherein the permission updating request comprises the identity identification and the updated information identification.

And S12, the information server responds to the authority updating request and updates the established information-identity authority group according to the identity identification and the updated information identification.

And S13, the communication server sends the updated information identifier to the display terminal.

The S12 and S13 have no strict timing relationship, and may be performed first for the S12 step, first for the S13 step, or both steps.

S14, the display terminal sends an information acquisition request to the information server, and the information acquisition request contains updated information identification, identity identification and signature information.

After receiving the updated information identifier, the display terminal can acquire the originally received communication range identifier and signature information, and generate a new information acquisition request according to the updated information identifier, communication range identifier and signature information.

And S15, the information server checks the signature information, and when the signature passes, whether the updated information identifier is matched with the identity identifier is judged according to the updated information-identity authority group.

And S16, if the information identifier is judged to be matched with the identity identifier, the information server returns the information to be projected corresponding to the updated information identifier to the display terminal.

And S17, the display end displays the new information to be projected.

In some optional implementation manners, the communication server may further receive a screen-throwing ending request sent by the screen-throwing end, where the screen-throwing ending request may carry an identity of the display end; and can respond to and throw the end request of the screen, send the permission comprising this identity to clear the request to the information server. Correspondingly, the information server can search the information-identity authority group containing the identity according to the identity carried in the authority clearing request and clear the information-identity authority group.

According to the technical scheme of the embodiment of the disclosure, the information server responds to the authority updating request of the communication server, the established information-identity authority group is updated, and the acquisition authority for updating the information to be screen-thrown on the display terminal can be realized. The information server responds to the permission clearing request, and clears the information-identity permission group, so that the display end can obtain the information to be screen-thrown again after the screen-throwing process is completed (for example, after a conference is finished), the leakage of the information to be screen-thrown is avoided, and the information safety is ensured. In addition, the screen projection system provided by the embodiment of the disclosure and the screen projection method provided by the embodiment belong to the same disclosure concept, and technical details which are not described in detail in the embodiment can be referred to the embodiment, and the embodiment has the same beneficial effects as the embodiment.

EXAMPLE six

Fig. 6 is a schematic structural diagram of a screen projection apparatus according to a sixth embodiment of the disclosure. The screen projection device provided by the embodiment of the disclosure is suitable for screen projection, for example, suitable for screen projection of local documents in a conference room.

As shown in fig. 6, the screen projection device, integrated in the information server, includes:

the first request receiving module 610 is configured to receive an information acquisition request sent by a display end, where the information acquisition request includes an information identifier of information to be screened, an identity identifier of the display end, and signature information; the information identification, the identity identification and the signature information are determined based on a screen projection request of a screen projection end and are issued to a display end associated with the screen projection end;

the authority judgment module 620 is configured to check the signature information, and when the signature passes through the check, judge whether the information identifier is matched with the identity identifier according to a preset information-identity authority group; the preset information-identity authority group requests the establishment of an information server based on a screen projection request;

and an information returning module 630, configured to return the to-be-projected-screen information corresponding to the information identifier to the display end if the information identifier is matched with the identity identifier, so that the display end displays the to-be-projected-screen information.

In some optional implementations, the screen projection apparatus further includes:

a permission group module for generating by:

receiving an authority establishing request sent by a communication server, wherein the authority establishing request comprises an information identifier and an identity identifier; and establishing an information-identity authority group according to the information identifier and the identity identifier.

In some optional implementation manners, the identity includes a communication range identifier of a communication range created by the communication server according to the screen-throwing end identifier and the connection information of the display end carried in the screen-throwing request.

In some optional implementations, after establishing the information-identity permission group, the permission group module is further configured to:

receiving an authority updating request sent by a communication server, wherein the authority updating request comprises an identity identifier and an updated information identifier; wherein the updated information identifier is generated based on the new screen-casting request; and updating the established information-identity authority group according to the identity identification and the updated information identification.

In some optional implementations, the permission group module may be specifically configured to:

establishing a new information-identity authority group according to the identity and the updated information identifier, and replacing the established information-identity authority group containing the identity by using the newly established information-identity authority group; or adding the updated information identifier to the established information-identity authority group containing the identity identifier.

In some optional implementations, after establishing the information-identity permission group, the permission group module may be further configured to:

receiving an authority clearing request sent by a communication server, wherein the authority clearing request comprises an identity; and clearing the established information-identity authority group containing the identity identification according to the authority clearing request.

In some alternative implementations, the information to be projected includes a document; correspondingly, the information identifier of the information to be projected is used for indicating the storage position of the document.

In some alternative implementations, the signature information is generated by the communication server based on signing the identity; correspondingly, the permission judging module can be used for: and checking the signature information according to the identity identification.

In some optional implementations, the permission determination module may be specifically configured to:

decrypting the signature information by using a preset public key and judging whether a decryption result is consistent with the identity mark; the preset public key is matched with a preset private key used when the communication server signs the identity.

In some optional implementations, the screen projection device can be applied to a scene of screen projection in a conference room; correspondingly, the display terminal is display equipment in the conference room system.

The screen projection device provided by the embodiment of the disclosure can execute the screen projection method provided by any embodiment of the disclosure, and has the corresponding functional modules and beneficial effects of the execution method.

It should be noted that, the units and modules included in the apparatus are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the embodiments of the present disclosure.

EXAMPLE seven

Fig. 7 is a schematic structural diagram of a screen projection device according to a seventh embodiment of the disclosure. The screen projection device provided by the embodiment of the disclosure is suitable for screen projection, for example, suitable for screen projection of local documents in a conference room.

As shown in fig. 7, the screen projection apparatus, integrated in the communication server, includes:

the second request receiving module 710 is configured to determine, in response to a screen projection request sent by a screen projection end, an information identifier of information to be screen projected, an identity identifier of a display end, and signature information;

the authority establishing module 720 is configured to send an authority establishing request to the information server, where the authority establishing request includes an information identifier and an identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and the communication range identifier;

the information issuing module 730 is configured to issue the information identifier, the identity identifier and the signature information to the display end, so that the display end sends an information acquisition request including the information identifier, the identity identifier and the signature information to the information server, and further, the information server checks the signature information, and when the signature passes through the information-identity permission group, whether the information identifier is matched with the identity identifier is judged, and when the information identifier is matched with the identity identifier, screen information to be projected corresponding to the information identifier is returned to the display end, so that the display end displays the screen information to be projected.

In some optional implementations, the identity identifier includes a communication range identifier of a communication range to which the display end belongs; and, the communication server may generate the communication range identification by:

analyzing the connection information of the screen projection end identification and the display end in the screen projection request; and acquiring a display end identifier corresponding to the connection information, creating a communication range according to the screen projection end identifier and the display end identifier, and generating a communication range identifier.

In some optional implementations, the information server further includes:

and the connection information sending module is used for periodically updating the connection information of the display end and sending the updated connection information to the display end so that the display end transmits the connection information to the screen projection end.

In some optional implementations, the second request receiving module is further configured to: responding to a new screen projection request sent by a screen projection end, and determining an updated information identifier;

correspondingly, the authority establishing module is also used for sending an authority updating request to the information server, wherein the authority updating request comprises the identity identifier and the updated information identifier, so that the information server updates the established information-identity authority group according to the identity identifier and the updated information identifier;

and the information issuing module is also used for issuing the updated information identifier to the display end so that the display end can acquire and display the information to be projected corresponding to the updated information identifier.

In some alternative implementations, the communication server may generate the signature information by: signing the identity identification to generate signature information;

correspondingly, the information server checks the signature of the signature information, and the method comprises the following steps: and enabling the information server to check the signature of the signature information according to the identity identification.

In some optional implementations, enabling the information server to check the signature information according to the identity includes: enabling the information server to decrypt the signature information by using a preset public key and judging whether the decryption result is consistent with the identity mark; if yes, the signature passes the verification; the preset public key is matched with a preset private key used when the communication server signs the identity.

Example eight

Referring now to fig. 8, a schematic diagram of an electronic device (e.g., a terminal device or a server in fig. 8) 800 suitable for implementing embodiments of the present disclosure is shown. The terminal device in the embodiments of the present disclosure may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a vehicle terminal (e.g., a car navigation terminal), and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. The electronic device shown in fig. 8 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.

As shown in fig. 8, electronic device 800 may include a processing device (e.g., central processing unit, graphics processor, etc.) 801 that may perform various appropriate actions and processes in accordance with a program stored in a Read-Only Memory (ROM) 802 or a program loaded from a storage device 806 into a Random Access Memory (RAM) 803. In the RAM803, various programs and data necessary for the operation of the electronic apparatus 800 are also stored. The processing apparatus 801, the ROM802, and the RAM803 are connected to each other by a bus 804. An input/output (I/O) interface 805 is also connected to bus 804.

Generally, the following devices may be connected to the I/O interface 805: input devices 806 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 807 including, for example, a Liquid Crystal Display (LCD), speakers, vibrators, and the like; storage 808 including, for example, magnetic tape, hard disk, etc.; and a communication device 809. The communication means 809 may allow the electronic device 800 to communicate wirelessly or by wire with other devices to exchange data. While fig. 8 illustrates an electronic device 800 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.

In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a non-transitory computer readable medium, the computer program containing program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication means 809, or installed from the storage means 806, or installed from the ROM 802. The computer program, when executed by the processing device 801, performs the above-described functions defined in the screen projection method of the embodiment of the present disclosure.

The electronic device provided by the embodiment of the disclosure and the screen projection method provided by the embodiment belong to the same disclosure concept, and technical details which are not described in detail in the embodiment can be referred to the embodiment, and the embodiment have the same beneficial effects.

Example nine

The disclosed embodiments provide a computer storage medium having a computer program stored thereon, which when executed by a processor implements the screen projection method provided by the above embodiments.

It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM) or FLASH Memory (FLASH), an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.

In some embodiments, the clients, servers may communicate using any currently known or future developed network Protocol, such as HTTP (Hyper Text Transfer Protocol), and may interconnect with any form or medium of digital data communication (e.g., a communications network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the Internet (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed network.

The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.

The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to:

receiving an information acquisition request sent by a display end, wherein the information acquisition request comprises an information identifier of information to be projected, an identity identifier of the display end and signature information; the information identification, the identity identification and the signature information are determined based on a screen projection request of a screen projection end and are issued to a display end associated with the screen projection end;

checking the signature information, and judging whether the information identifier is matched with the identity identifier according to a preset information-identity authority group when the signature passes the checking; the preset information-identity authority group requests the establishment of an information server based on a screen projection request;

if so, returning the information to be projected corresponding to the information identifier to the display end so that the display end can display the information to be projected.

Alternatively, the one or more programs, when executed by the electronic device, cause the electronic device to:

sending an authority establishing request to an information server, wherein the authority establishing request comprises an information identifier and an identity identifier, so that the information server establishes an information-identity authority group according to the information identifier and a communication range identifier;

the information identification, the identity identification and the signature information are issued to a display end, so that the display end sends an information acquisition request containing the information identification, the identity identification and the signature information to an information server, the information server checks the signature information, whether the information identification is matched with the identity identification is judged according to an information-identity authority group when the signature passes, and screen information to be projected corresponding to the information identification is returned to the display end when the information identification is matched with the identity identification, so that the display end displays the screen information to be projected.

Computer program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including but not limited to an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present disclosure may be implemented by software or hardware. The names of the units and the modules do not limit the units and the modules in some cases, and for example, the "authority judgment module" may also be described as an "access authority judgment module".

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Part (ASSP), a System On Chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

According to one or more embodiments of the present disclosure, [ example one ] there is provided a screen projection method applied to an information server, including:

According to one or more embodiments of the present disclosure, [ example two ] there is provided a screen projection method, further comprising:

in some optional implementations, the information-identity permission group is generated by:

receiving an authority establishing request sent by a communication server, wherein the authority establishing request comprises the information identifier and the identity identifier;

and establishing an information-identity authority group according to the information identifier and the identity identifier.

According to one or more embodiments of the present disclosure, [ example three ] there is provided a screen projection method, further comprising:

According to one or more embodiments of the present disclosure, [ example four ] there is provided a screen projection method, further comprising:

in some optional implementations, after the establishing the information-identity permission group, further includes:

receiving a permission updating request sent by the communication server, wherein the permission updating request comprises the identity identifier and an updated information identifier; wherein the updated information identifier is generated based on the new screen-casting request;

and updating the established information-identity authority group according to the identity identification and the updated information identification.

According to one or more embodiments of the present disclosure, [ example five ] there is provided a screen projection method, further comprising:

in some optional implementation manners, the updating the established information-identity permission group according to the identity and the updated information identity includes:

establishing a new information-identity authority group according to the identity and the updated information identifier, and replacing the established information-identity authority group containing the identity by using the newly established information-identity authority group;

or adding the updated information identifier to the established information-identity authority group containing the identity identifier.

According to one or more embodiments of the present disclosure, [ example six ] there is provided a screen projection method, further comprising:

receiving an authority clearing request sent by the communication server, wherein the authority clearing request comprises the identity;

and clearing the established information-identity authority group containing the identity identification according to the authority clearing request.

According to one or more embodiments of the present disclosure, [ example seven ] there is provided a screen projection method, further comprising:

in some optional implementations, the information to be projected includes a document; correspondingly, the information identifier of the information to be projected is used for indicating the storage position of the document.

According to one or more embodiments of the present disclosure, [ example eight ] there is provided a screen projection method, further comprising:

in some optional implementations, the signature information is generated by the communication server based on signing the identity;

correspondingly, the verifying the signature information includes: and checking the signature of the signature information according to the identity identification.

According to one or more embodiments of the present disclosure, [ example nine ] there is provided a screen projection method, further comprising:

in some optional implementations, the verifying the signature information according to the identity includes:

decrypting the signature information by using a preset public key and judging whether a decryption result is consistent with the identity mark;

the preset public key is matched with a preset private key used when the communication server signs the identity.

According to one or more embodiments of the present disclosure, [ example ten ] there is provided a screen projection method, further comprising:

in some optional implementations, the method is applied to a scene of screen projection in a meeting room; correspondingly, the display terminal is display equipment in the conference room system.

According to one or more embodiments of the present disclosure, [ example eleven ] there is provided a screen projection method applied to a communication server, including:

and issuing the information identifier, the identity identifier and the signature information to a display end so that the display end sends an information acquisition request containing the information identifier, the identity identifier and the signature information to the information server, then enabling the information server to check the signature information, judging whether the information identifier is matched with the identity identifier or not according to the information-identity authority group when the signature passes the check, and returning screen information to be projected corresponding to the information identifier to the display end when the information identifier is matched with the identity identifier so that the display end displays the screen information to be projected.

According to one or more embodiments of the present disclosure, [ example twelve ] there is provided a screen projection method, further comprising:

in some optional implementations, the identity includes a communication range identifier of a communication range to which the display terminal belongs;

and, the communication range identification is generated by:

analyzing the connection information of the screen projection end identification and the display end in the screen projection request;

and acquiring a display end identifier corresponding to the connection information, creating a communication range according to the screen projection end identifier and the display end identifier, and generating a communication range identifier.

According to one or more embodiments of the present disclosure, [ example thirteen ] provides a screen projection method, further comprising:

in some optional implementation manners, the connection information of the display end is periodically updated and sent to the display end, so that the display end transmits the connection information to the screen projection end.

According to one or more embodiments of the present disclosure, [ example fourteen ] there is provided a screen projection method, further comprising:

in some optional implementation manners, in response to a new screen projection request sent by a screen projection terminal, determining an updated information identifier;

sending an authority updating request to an information server, wherein the authority updating request comprises the identity identifier and an updated information identifier, so that the information server updates the established information-identity authority group according to the identity identifier and the updated information identifier;

and issuing the updated information identifier to the display end so that the display end acquires and displays the information to be projected corresponding to the updated information identifier.

According to one or more embodiments of the present disclosure, [ example fifteen ] there is provided a screen projection method, further comprising:

in some optional implementations, the signature information is generated by:

signing the identity identification to generate signature information;

correspondingly, enabling the information server to verify the signature of the signature information includes: and enabling the information server to check the signature of the signature information according to the identity identification.

According to one or more embodiments of the present disclosure, [ example sixteen ] there is provided a screen projection method, further comprising:

in some optional implementations, enabling the information server to check the signature information according to the identity includes:

enabling the information server to decrypt the signature information by using a preset public key and judging whether a decryption result is consistent with the identity mark; if yes, the signature passes the verification;

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other embodiments in which any combination of the features described above or their equivalents does not depart from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A screen projection method is applied to an information server and comprises the following steps:

2. The method of claim 1, wherein the set of information-identity rights is generated by:

3. The method according to claim 2, wherein the identity includes a communication range identifier of a communication range created by the communication server according to the screen-throwing end identifier and the connection information of the display end carried in the screen-throwing request.

4. The method of claim 2, further comprising, after the establishing the set of information-identity rights:

5. The method of claim 4, wherein the updating the established information-identity permission group according to the identity and the updated information identity comprises:

6. The method of claim 2, further comprising, after the establishing the set of information-identity rights:

7. The method of claim 1, wherein the information to be projected comprises a document; correspondingly, the information identifier of the information to be projected is used for indicating the storage position of the document.

8. The method of claim 1, wherein the signature information is generated by a communication server based on signing the identity;

9. The method of claim 8, wherein said verifying said signature information according to said identity comprises:

10. The method of any one of claims 1-9, applied to a meeting room screen-cast scenario; correspondingly, the display terminal is display equipment in the conference room system.

11. A screen projection method is applied to a communication server and comprises the following steps:

12. The method according to claim 11, wherein the identity identifier comprises a communication range identifier showing a communication range to which the terminal belongs;

and, the communication range identification is generated by:

13. The method of claim 12, further comprising:

and periodically updating the connection information of the display end and sending the connection information to the display end so that the display end transmits the connection information to the screen projection end.

14. The method of claim 11, further comprising:

responding to a new screen projection request sent by a screen projection end, and determining an updated information identifier;

15. The method of claim 11, wherein the signature information is generated by:

signing the identity identification to generate signature information;

16. The method of claim 15, wherein enabling the information server to verify the signature information according to the identity includes:

17. A screen projection system, comprising: the system comprises a communication server, an information server and a display end;

18. The system of claim 17, further comprising:

the communication server is used for responding to a new screen projection request sent by a screen projection end and sending an authority updating request to the information server, wherein the authority updating request comprises the identity identifier and an updated information identifier; sending the updated information identification to the display end;

the information server is used for responding to the authority updating request and updating the established information-identity authority group according to the identity identification and the updated information identification;

the display terminal is used for sending an information acquisition request to the information server, wherein the information acquisition request comprises an updated information identifier, the identity identifier and the signature information;

the information server is also used for checking the signature of the signature information and judging whether the updated information identifier is matched with the identity identifier according to the updated information-identity authority group when the signature passes the checking; if so, returning the information to be projected corresponding to the updated information identifier to the display end;

and the display end is also used for displaying new information to be projected.

19. The system of claim 17 or 18, applied to a scene projected in a meeting room; correspondingly, the display terminal is display equipment in the conference room system.

20. A screen projection device, integrated in an information server, comprising:

21. A screen projection apparatus integrated with a communication server, comprising:

22. An electronic device, characterized in that the electronic device comprises:

one or more processors;

a storage device for storing one or more programs,

when executed by the one or more processors, cause the one or more processors to implement the screen projection method applied to the information server of any one of claims 1-10, or to implement the screen projection method applied to the communication server of any one of claims 11-16.

23. A storage medium containing computer-executable instructions for performing the screen projection method applied to an information server as claimed in any one of claims 1 to 10, or implementing the screen projection method applied to a communication server as claimed in any one of claims 11 to 16, when executed by a computer processor.