CN113138739B

CN113138739B - Screen projection method, system, device, electronic equipment and storage medium

Info

Publication number: CN113138739B
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: 2023-06-27
Anticipated expiration: 2041-05-17
Also published as: CN113138739A

Abstract

The embodiment of the disclosure discloses a screen projection method, a system, a device, electronic equipment and a storage medium, wherein the method comprises the following steps: the information server receives an information acquisition request sent by the 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 signature information, and judging whether an information mark is matched with an identity mark according to a preset information-identity authority group when the signature checking passes; the method comprises the steps that a preset information-identity authority group requests an information server to establish based on a screen throwing request; if yes, the information to be screened corresponding to the information identification is returned to the display end, so that the display end displays the information to be screened. Not only can guarantee the definition of information display, can also realize conveniently throwing the screen operation, throw the screen efficient, 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, in particular to a screen projection method, a system, a device, electronic equipment 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 display. The techniques are generally applicable to scenes projected by "small screen" devices to "large screen" devices to enhance the visual experience of the user.

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

Disclosure of Invention

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

In a first aspect, an embodiment of the present disclosure provides a screen projection method, which is 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 projected, an identity identifier of the display end and signature information; the information identification, the identification 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 mark is matched with the identity mark according to a preset information-identity authority group when the signature checking passes; the preset information-identity authority group requests the information server to establish based on the screen projection request;

if yes, the information to be screened corresponding to the information identification is returned to the display end, so that the display end displays the information to be screened.

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

responding to a screen throwing request sent by a screen throwing end, and determining an information identification of information to be thrown, an identity identification of a display end and signature information;

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

and sending the information identification, the identity identification and the signature information 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, further enabling the information server to check the signature information, judging whether the information identification is matched with the identity identification according to the information-identity authority group when the signature check passes, and returning to-be-screened information corresponding to the information identification to the display end when the information identification is matched with the identity identification so as to enable the display end to display the to-be-screened information. 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 identification of information to be projected, an identity identification of the display end and signature information;

the communication server is further configured to send a permission establishment request to the information server, where the permission establishment request includes the information identifier and the identity identifier; issuing the information identifier, the identity identifier and the signature information 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 end is used for sending an information acquisition request to the information server, and the information acquisition request comprises the information identifier, the identity identifier and the signature information;

the information server is further used for 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 checking passes; if yes, returning the information to be screened corresponding to the information identifier to the display end;

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

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

the first request receiving module is used for receiving an information acquisition request sent by the 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 identification 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 permission judging module is used for carrying out signature verification on the signature information and judging whether the information identification is matched with the identity identification according to a preset information-identity permission group when the signature verification passes; the preset information-identity authority group requests the information server to establish based on the screen projection request;

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

In a fifth aspect, an embodiment of the present disclosure further provides a screen projection device, 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 identification of information to be projected, an identity identification 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 the 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, the information server further performs signature verification on the signature information, and judges whether the information identifier is matched with the identity identifier according to the information-identity authority group when the signature verification passes, and returns screen information to be screened 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 screened.

In a sixth aspect, embodiments of the present disclosure further provide an electronic device, including:

one or more processors;

storage means for storing one or more programs,

the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of screening as described 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 that, when executed by a computer processor, are for performing a method of screening according to any of the disclosed embodiments.

According to the technical scheme, 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 signature information, and judging whether an information mark is matched with an identity mark according to a preset information-identity authority group when the signature checking passes; the method comprises the steps that a preset information-identity authority group requests an information server to establish based on a screen throwing request; if yes, the information to be screened corresponding to the information identification is returned to the display end, so that the display end displays the information to be screened.

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

Drawings

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

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

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

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

Fig. 4 is a signaling diagram of each device in a screen projection system according to a fourth embodiment of the present disclosure;

fig. 5 is a signaling diagram of each device 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 device according to a sixth embodiment of the disclosure;

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

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the 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 have been shown in the accompanying 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 are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present 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. Furthermore, 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 "including" and variations thereof as used herein are intended to be 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. Related definitions of other terms will be given in the description below.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

Example 1

Fig. 1 is a flowchart of a screen projection method according to an embodiment of the present disclosure, where the embodiment of the present disclosure is applicable to a screen projection situation, for example, a situation where a document local to a conference room is projected. The method may be performed by a screen-casting device, which may be implemented in software and/or hardware, which may be configured in an electronic apparatus, for example in 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 the 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 screen projection method provided by the embodiment relates to an emerging screen projection method. The emerging screen projection method can comprise the following steps: the screen throwing end sends a link of information to be thrown to the display end through a communication application installed on the screen throwing end; correspondingly, the display end displays authorization prompt information to prompt the screen throwing end to perform authorization operation; after the authorization is passed, the display end obtains and displays the information corresponding to the link according to the identity of the communication application account number of the screen throwing end.

Compared with the traditional screen projection method, the emerging screen projection method can directly acquire information for display, but does not acquire video streams containing the information for display, 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 are required to be displayed, a user at the screen display end needs to repeatedly conduct authorization operation, so that the operation is complicated, the screen display efficiency is low, and the user experience is poor.

According to the screen projection method, on the basis of guaranteeing clear display of information, more convenient screen projection operation can be achieved, screen projection efficiency is improved, and experience of a screen projection end user is improved.

In the embodiment of the disclosure, 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 information to be screened may include, for example, a document containing at least one element of text, graphics, images, audio, video, etc., and the format of the document may be, for example, word, excel, PPT or html, etc. The information to be screened can be stored in the information server, and the storage position of the information to be screened or other information uniquely corresponding to the storage position can be used as an information identifier of the information to be screened, namely the information identifier can be used for indicating the storage position of the document. The information identification of the information to be screened is, for example, a uniform resource locator (uniform resource locator, URL) of the information server.

When the screen throwing end needs to throw the screen information to be thrown to the display end, the information identification of the screen information to be thrown can be transmitted to the display end through the communication server, so that the display end requests the information server for the screen information to be thrown corresponding to the information identification. In addition, in order to ensure the safety of the information to be screened, namely, the screening information can only be acquired by the display end with access authority, and the display end needs to carry the identity of the display end and signature information when requesting the information to be screened from the information server.

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

The signature information can be considered as encryption information for verifying whether the identity of the screen-throwing end is true, and the signature information can be obtained by encrypting the identity or other information uniquely corresponding to the identity through the communication server. The identification and signature information carried in the information acquisition request can be used as a Token issued to the display end by the communication server for authority authentication of the display end.

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, for example, may include: the communication server responds to a screen throwing request of a screen throwing end, analyzes an information identifier transmitted by the screen throwing end, determines an identity identifier of a display end and generates signature information; and sending the information identification, the identity identification and the signature information to a display end corresponding to the identity identification. Correspondingly, the display end can carry the information identification, the identification and the signature information to an information acquisition request to request information to be screened in the information server.

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

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

The signature information is checked, so that the display end with different identities from the screen throwing end can be effectively prevented, and the condition of obtaining the access right of the information to be thrown is expected by only tampering with the identity mark of the information obtaining request, so that the security of the information to be thrown is improved.

In the embodiment of the present disclosure, the preset information-identity authority group requests the information server to establish based on a screen-throwing request, which may include, for example: the communication server responds to the screen throwing request and requests the information server to establish. Before sending 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 the information-identity permission set, so that the information server establishes the information-identity permission set in advance before receiving the information acquisition request.

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

And S130, if so, returning the information to be screened corresponding to the information identification to the display end so as to enable the display end to display the information to be screened.

In the embodiment of the disclosure, when the information server judges that the information identifier is matched with the identity identifier according to the preset information-identity authority group, the display end can be considered to have the access authority of the information to be screened. At this time, the information server can search the information to be screened corresponding to the information identifier, and return the information to be screened to the display end, so that the display end displays the information to be screened.

After the screen throwing end sends a screen throwing request to the communication server, the communication server can request to establish an information-identity authority group to the information server according to the screen throwing request and send corresponding information to a display end associated with the screen throwing end. Furthermore, authentication can be realized on the display end through the information server, so that the situation that the screen throwing end performs authorization operation on the display end after initiating a certain screen throwing request is avoided, and the screen throwing operation is more convenient is avoided. Especially, when the screen-throwing end needs to throw a plurality of information in the same conference, the repeated authorized operation of the user at the screen-throwing end can be avoided, the screen-throwing efficiency is greatly improved, and the experience of the user at the screen-throwing end is improved.

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

In these alternative implementations, the communication server may directly sign encrypt the identity; correspondingly, when signature verification and decryption are carried out on the signature information, the communication server can judge whether a decryption result is consistent with the identity in the information acquisition request or not so as to carry out signature verification on the signature information. When the decryption result is consistent with the identity in the information acquisition request, the verification signature can be considered to pass; when the decryption result is inconsistent with the identity in the information acquisition request, the verification signature can be considered to be failed.

In some further implementations, signing the signature information according to the identity, including: decrypting the signature information by using a preset public key, and judging whether a decryption result is consistent with the identity; 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, signature information can be generated by using the preset private key at the communication server, and the signature information is decrypted by using the matched preset public key at the information server.

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

In these alternative implementations, the screen projection method may be applied to a conference room screen projection scene, i.e., a conference room local screen projection scene. The screen throwing end can be a mobile phone or a notebook computer of a user, for example; the communication server may be, for example, a video conference (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 presentation end may be a presentation device in a conference room system, such as a television or projector in a conference room system, etc.

When a user holds the screen-throwing end to carry out the conference room, the screen-throwing method can be used for throwing the information in the screen-throwing end to the display equipment of the conference room, and document sharing in the local screen-throwing can be conveniently and rapidly realized. In addition, by projecting the small screen device to the large screen device, the interaction efficiency and visual experience of users in the conference can be improved.

Example two

The embodiments of the present disclosure may be combined with each of the alternatives in the screen projection method provided in the above embodiments. The screen projection method provided by the embodiment elaborates the steps of establishing, updating and clearing the information-identity authority group. The information server responds to the permission establishment request of the communication server to establish an information-identity permission group, and responds to the permission update request of the communication server to update the established information-identity permission group, so that the acquisition permission of the information to be screened can be set and updated for the display end. The information server responds to the permission removal request to remove the information-identity permission group, so that the display end cannot obtain the information to be screened again after the screen screening process is finished (for example, after a conference is finished), the information to be screened is prevented from being leaked, and the safety of the information is ensured.

Fig. 2 is a flowchart 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 a permission establishment request sent by a communication server, wherein the permission establishment request comprises an information identifier and an identity identifier.

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

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

step 1, a communication server analyzes a screen-throwing end identifier carried in a screen-throwing request and connection information of a display end.

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

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

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

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

And step 3, creating a communication range according to the screen-throwing 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 identifier as the identity identifiers of the display end and the screen throwing end so as to represent the group identities of the display end and the screen throwing end as the client end which communicates within the communication range corresponding to the communication range identifier.

After the communication server responds to the screen throwing request and determines the information identification and the identity identification, an authority establishing request carrying the information identification and the identity identification can be generated, and the authority establishing request is sent to the information server, so that the information server establishes an information-identity authority group according to the information identification and the identity identification carried in the request.

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

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 by writing a record in a preset storage location. The record comprises information identification, identity identification and corresponding relation record.

S230, receiving an information acquisition request sent by the 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.

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

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

S250, if yes, returning the information to be screened corresponding to the information identification to the display end so that the display end displays the information to be screened.

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

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

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

When the information server receives the permission update request, a new information-identity permission group can be established according to the identity and the updated information identity, and the newly established information-identity permission group is utilized to replace the established information-identity permission group containing the identity; or adding the updated information identifier to the established information-identity authority group containing the identity identifier.

The new information-identity authority group is established by writing a new record containing the identity identifier and the updated information identifier in a preset storage position. Accordingly, replacing the established information-identity authority group containing the identity with the newly established information-identity authority group may include: and replacing the original record containing the identity mark with the new record. Therefore, the display end can have the latest acquisition permission of the information to be screened.

Wherein, adding the updated information identifier to the established information-identity authority group containing the identity identifier can include: the original record containing the identity mark is searched, the corresponding relation between the identity mark and the information mark in the original record is reserved, and meanwhile, the corresponding relation between the identity mark and the updated information mark is added, so that the updated information mark is added into the established information-identity authority group containing the identity mark. Therefore, when the screen throwing end switches the screen throwing among a plurality of pieces of information to be thrown, the display end can have all the acquisition rights of the screen throwing information, and the operation of repeatedly updating the rights group by the information server is avoided.

When receiving the updated information identifier, the display end can send a new information acquisition request to the information server, wherein the new information acquisition request comprises the updated information identifier, the identity identifier and the signature information. Correspondingly, the information server can check signature information, and when the signature check passes, the information server judges whether the updated information identification is matched with the identity identification according to the updated information-identity authority group; if yes, the information to be screened corresponding to the updated information identification is returned to the display end, so that the display end displays the new information to be screened.

In these alternative implementations, the information server may respond to the rights update request of the communication server to update the established information-identity rights group, so as to set and update the obtaining rights of the information to be screened for the presentation end.

In some alternative implementations, after establishing the information-identity rights group, further comprising: receiving a right clearing request sent by a communication server, wherein the right clearing request comprises an identity; and clearing the established information-identity authority group containing the identity mark according to the authority clearing request.

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

When the audio-video conference formed by the screen throwing end and the display end is ended, the screen throwing end can send a screen throwing end request to the communication server, so that the communication server can inform the information server of the information-identity permission group clearing operation, the display end can be prevented from acquiring and displaying screen throwing information again in the conference process after the conference is ended, and the information security is ensured.

In these alternative implementation modes, the information server responds to the permission removal request to remove the information-identity permission group, so that the display end cannot obtain the information to be screened again after the screen screening process is finished, the information to be screened is prevented from leaking, and the safety of the information is ensured.

The technical scheme of the embodiment of the disclosure describes the steps of establishing, updating and clearing the information-identity permission group in detail. The information server responds to the permission establishment request of the communication server to establish an information-identity permission group, and responds to the permission update request of the communication server to update the established information-identity permission group, so that the acquisition permission of the information to be screened can be set and updated for the display end. The information server responds to the permission removal request to remove the information-identity permission group, so that the display end cannot obtain the information to be screened again after the screen screening process is finished (for example, after a conference is finished), the information to be screened is prevented from being leaked, and the safety of the information is ensured.

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

Example III

Fig. 3 is a flowchart of a screen projection method according to a third embodiment of the present disclosure. The method and the device are applicable to the screen projection situation, such as the situation of projection of documents local to a conference room. The method may be performed by a screen-casting device, which may be implemented in software and/or hardware, which may be configured in an electronic apparatus, for example in a communication server.

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

s310, in response to a screen projection request sent by a screen projection end, determining an information identification of information to be projected, an identity identification of a display end and signature information.

Wherein, the screen throwing information can comprise a document; correspondingly, the information identifier of the information to be screened is used for indicating the storage position of the document. The identity may be considered as an identity for characterizing the presentation end, for example, may be a presentation end identifier, or a communication range identifier of a communication range to which the presentation end belongs, etc. The signature information can be considered as encryption information for verifying whether the identity of the screen-throwing end is true, and the signature information can be obtained by encrypting the identity or other information uniquely corresponding to the identity through the communication server. The identification and signature information carried in the information acquisition request can be used as a Token issued to the display end by the communication server for authority authentication of the display end.

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

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

The information server can analyze the information identification and the identity identification in the permission establishment request, and can establish an information-identity permission group corresponding to the information identification and the identity identification by writing a record in a preset storage position. The record comprises information identification, identity identification and corresponding relation record.

S330, the information identification, the identity identification and the signature information are issued to the display end, so that the display end sends an information acquisition request of the information identification, the identity identification and the signature information to the information server, the information server is further enabled to check the signature information, and when the signature check passes, whether the information identification is matched with the identity identification or not is judged according to the information-identity authority group, and when the information identification is matched with the identity identification, screen information to be screened corresponding to the information identification is returned to the display end, so that the display end displays the screen information to be screened.

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

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

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

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

Because the connection information of the display terminal is generated by the communication server, the current corresponding relation between the display terminal 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. Further, a communication range can be created according to the screen-throwing end identifier and the display end identifier, and a communication range identifier of the communication range can be generated.

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

The display end can send a new information acquisition request to the information server when receiving the updated information identifier, and the new information acquisition request comprises the updated information identifier, the identity identifier and the signature information. Correspondingly, the information server can check signature information, and when the signature check passes, the information server judges whether the updated information identification is matched with the identity identification according to the updated information-identity authority group; if yes, the information to be screened corresponding to the updated information identification is returned to the display end, so that the display end displays the new information to be screened.

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

In some alternative implementations, the signature information is generated by: signing the identity mark to generate signature information; correspondingly, the method for enabling the information server to check the signature information comprises the following steps: and the information server performs signature verification on the signature information according to the identity.

In some further implementations, causing the information server to sign the signature information based on the identity, includes: the information server decrypts the signature information by using a preset public key, and judges whether the decryption result is consistent with the identity; if yes, checking the signature; the preset public key is matched with a preset private key used when the communication server signs the identity.

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

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

Example IV

Fig. 4 is a signaling diagram of each device in a screen projection system according to a fourth embodiment of the present disclosure. The screen projection system provided by the embodiment of the disclosure is suitable for the screen projection situation, such as the situation of projecting a local document in a conference room.

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

s1, a screen throwing end sends a screen throwing request to a communication server.

S2, the communication server responds to the screen throwing request to determine the information identification of the information to be thrown, the identity identification of the display end and the signature information.

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

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

S3, the communication server sends a permission establishment request to the information server, wherein the permission establishment request comprises an information identifier and an identity identifier.

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

S5, the communication server transmits the information identification, the identity identification and the signature information to the display end.

The step S4 and the step S5 are not strictly related in time sequence, and can be executed first in the step S4, or executed first in the step S5, or executed simultaneously.

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

And S7, the information server performs signature verification on the signature information, and when the signature verification passes, whether the information identification is matched with the identity identification is judged according to a preset information-identity authority group.

And S8, if the information identification is matched with the identity identification, the information server returns the information to be screened corresponding to the information identification to the display end.

S9, the display end displays information to be projected.

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

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

According to the screen projection system provided by the embodiment of the disclosure, after the screen projection end sends a screen projection request to the communication server, the communication server can request to establish an information-identity authority group to the information server according to the screen projection request and send corresponding information to the associated display end. Furthermore, authentication can be realized on the display end through the information server, so that the screen throwing end is prevented from carrying out authorization operation again, and the screen throwing operation is more convenient. Especially when the screen throwing end needs to throw a plurality of information, the user of the screen throwing end can be prevented from executing repeated authorized operation, so that the screen throwing efficiency is greatly improved, and the user experience is improved.

In addition, the screen projection system provided by the embodiment of the present disclosure belongs to the same disclosure concept as the screen projection method provided by the above embodiment, and technical details not described in detail in the present embodiment can be seen in the above embodiment, and the present embodiment has the same beneficial effects as the above embodiment.

Example five

Embodiments of the present disclosure may be combined with each of the alternatives in the screen projection system provided in the above embodiments. The screen projection system provided in this embodiment describes in detail the step of projecting new screen information to be projected after the screen projection of the information to be projected is first completed, and the step of clearing the information-identity authority group. The information server responds to the permission update request of the communication server to update the established information-identity permission group, so that the acquisition permission of the information to be screened can be updated for the display end. The information server responds to the permission removal request to remove the information-identity permission group, so that the display end cannot obtain the information to be screened again after the screen screening process is finished (for example, after a conference is finished), the information to be screened is prevented from being leaked, and the safety of the information is ensured.

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

S10, the screen throwing end sends a new screen throwing request to the communication server, and the new screen throwing request comprises the updated information identification.

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

And S12, the information server responds to the permission update request, and updates the established information-identity permission group according to the identity identifier and the updated information identifier.

S13, the communication server sends the updated information identification to the display end.

The step S12 and the step S13 are not strictly related in time sequence, and may be executed first in the step S12, or executed first in the step S13, or executed simultaneously.

S14, the display end sends an information acquisition request to the information server, wherein the information acquisition request comprises updated information identification, identity identification and signature information.

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

And S15, the information server performs signature verification on the signature information, and when the signature verification passes, whether the updated information identification is matched with the identity identification is judged according to the updated information-identity authority group.

And S16, if the information identification is matched with the identity identification, the information server returns the screen information to be screened corresponding to the updated information identification to the display end.

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

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

According to the technical scheme, the information server responds to the permission update request of the communication server to update the established information-identity permission group, so that the acquisition permission of the information to be screened can be updated for the display end. The information server responds to the permission removal request to remove the information-identity permission group, so that the display end cannot obtain the information to be screened again after the screen screening process is finished (for example, after a conference is finished), the information to be screened is prevented from being leaked, and the safety of the information is ensured. In addition, the screen projection system provided by the embodiment of the present disclosure belongs to the same disclosure concept as the screen projection method provided by the above embodiment, and technical details not described in detail in the present embodiment can be seen in the above embodiment, and the present embodiment has the same beneficial effects as the above embodiment.

Example six

Fig. 6 is a schematic structural diagram of a screen projection device according to a sixth embodiment of the present disclosure. The screen projection device provided by the embodiment of the disclosure is suitable for the screen projection situation, such as the situation of projecting a local document 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 the 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 permission judging module 620 is configured to perform signature verification on the signature information, and judge whether the information identifier is matched with the identity identifier according to a preset information-identity permission set when the signature verification passes; the method comprises the steps that a preset information-identity authority group requests an information server to establish based on a screen throwing request;

the information return module 630 is configured to return the information to be screened 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 screened.

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

the permission group module is used for generating by the following modes:

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

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

In some alternative implementations, the rights group module, after establishing the information-identity rights group, is further to:

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

In some alternative implementations, the rights group module may be specifically configured to:

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

In some alternative implementations, the rights group module, after establishing the information-identity rights group, may be further operable to:

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

In some alternative implementations, the information to be screened includes a document; correspondingly, the information identifier of the information to be screened 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 mark.

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

In some alternative implementations, the screen projection device may be applied to a conference room screen projection scenario; correspondingly, the display end 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 each unit and module included in the above apparatus are only divided according to the functional logic, but not limited to the above division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for convenience of distinguishing from each other, and are not used to limit 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 the screen projection situation, such as the situation of projecting a local document in a conference room.

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

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

the permission establishing module 720 is configured to send a permission establishing request to the information server, where the permission establishing request includes an information identifier and an identity identifier, so that the information server establishes an information-identity permission 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 performs signature verification on the signature information, and when the signature verification passes, determines whether the information identifier is matched with the identity identifier according to the information-identity authority group, and returns to the display end the information to be screened corresponding to the information identifier when the information identifier is matched with the identity identifier, so that the display end displays the information to be screened.

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

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

In some alternative 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 connection information to the display end so that the display end can transmit the connection information to the screen throwing end.

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

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

the information issuing module is further 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 mark to generate signature information;

correspondingly, the method for enabling the information server to check the signature information comprises the following steps: and the information server performs signature verification on the signature information according to the identity.

In some optional implementations, the method for making the information server check the signature information according to the identity includes: the information server decrypts the signature information by using a preset public key, and judges whether the decryption result is consistent with the identity; if yes, checking the signature; 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 server in fig. 8) 800 suitable for use in implementing embodiments of the present disclosure is shown. The terminal devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 8 is merely an example and should not be construed to limit the functionality and scope of use of the disclosed embodiments.

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

In general, the following devices may be connected to the I/O interface 805: input devices 806 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, and the like; an output device 807 including, for example, a Liquid Crystal Display (LCD), speakers, vibrators, etc.; storage 808 including, for example, magnetic tape, hard disk, etc.; communication means 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 shows an electronic device 800 having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.

In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a non-transitory computer readable medium, the computer program comprising program code for performing the method shown in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via communication device 809, or installed from storage device 806, or installed from ROM 802. When executed by the processing device 801, the computer program 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 present disclosure and the screen projection method provided by the foregoing embodiment belong to the same disclosure concept, and technical details not described in detail in the present embodiment may be referred to the foregoing embodiment, and the present embodiment has the same beneficial effects as the foregoing embodiment.

Example nine

The present disclosure provides a computer storage medium having stored thereon a computer program 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 described in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any 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 context of this 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 the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. 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, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.

In some implementations, the clients, servers may communicate using any currently known or future developed network protocol, such as HTTP (Hyper Text Transfer Protocol ), and may be interconnected with any form or medium of digital data communication (e.g., a communication 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 networks.

The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated 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 signature information, and judging whether an information mark is matched with an identity mark according to a preset information-identity authority group when the signature checking passes; the method comprises the steps that a preset information-identity authority group requests an information server to establish based on a screen throwing request;

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

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

and sending the information identification, the identity identification and the signature information to the display end so that the display end sends an information acquisition request of the contained information identification, the identity identification and the signature information to the information server, further the information server performs signature verification on the signature information, judges whether the information identification is matched with the identity identification according to the information-identity authority group when the signature verification passes, and returns the information to be screened corresponding to the information identification to the display end when the information identification is matched with the identity identification so as to enable the display end to display the information to be screened.

Computer program code for carrying out operations of the present disclosure may be written in 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 kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

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

The functions described above herein 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 (Field Programmable Gate Array, FPGA), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a special standard product (Application Specific Standard Parts, 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. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the preceding. 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, there is provided a screen projection method, which is applied to an information server, including:

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

in some alternative implementations, the set of information-identity rights is generated by:

Receiving a permission establishment request sent by a communication server, wherein the permission establishment 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, there is provided a screen projection method [ example three ], further comprising:

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

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

in some alternative implementations, after the establishing the information-identity permission set, further includes:

receiving an authority update request sent by the communication server, wherein the authority update request comprises the identity and an updated information identifier; wherein the updated information identification is generated based on the new screen-drop request;

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

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

In some optional implementations, the updating the established information-identity authority 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 identity, and replacing the established information-identity authority group containing the identity by utilizing the latest established information-identity authority group;

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

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

receiving a right clearing request sent by the communication server, wherein the right clearing request comprises the identity;

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

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

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

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

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

correspondingly, the signing verification of the signature information comprises the following steps: and verifying the signature information according to the identity mark.

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

in some optional implementations, the signing information is checked according to the identity, including:

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

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, there is provided a screen projection method [ example ten ], further comprising:

in some alternative implementations, the method is applied to a conference room screen projection scene; correspondingly, the display end is display equipment in the conference room system.

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

and sending the information identification, the identity identification and the signature information 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, further enabling the information server to check the signature information, judging whether the information identification is matched with the identity identification according to the information-identity authority group when the signature check passes, and returning to-be-screened information corresponding to the information identification to the display end when the information identification is matched with the identity identification so as to enable the display end to display the to-be-screened information.

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

in some optional implementations, the identity 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 screen-throwing end identifier and the connection information of the display end in the screen-throwing request;

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

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

in some optional implementations, the connection information of the display end is updated periodically and issued to the display end, so that the display end transmits the connection information to the screen throwing end.

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

in some alternative implementations, the updated information identification is determined in response to a new screen-throwing request sent by the screen-throwing end;

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

And issuing the updated information identification to the display end so that the display end obtains and displays the information to be projected corresponding to the updated information identification.

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

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

signing the identity mark to generate signature information;

correspondingly, the information server is enabled to carry out signature verification on the signature information, and the method comprises the following steps: and enabling the information server to check the signature information according to the identity.

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

in some optional implementations, the signing information is checked by the information server according to the identity, including:

decrypting the signature information by the information server by using a preset public key, and judging whether a decryption result is consistent with the identity; if yes, checking the signature;

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by persons skilled in the art that the scope of the disclosure referred to in this disclosure is not limited to the specific combinations of features described above, but also covers other embodiments which may be formed by any combination of features described above or equivalents thereof without departing from the spirit of the disclosure. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Moreover, although 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. In 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 limiting the scope of the present 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 example forms of implementing the claims.

Claims

1. The screen projection method is characterized by being applied to an information server and comprising the following steps of:

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 identification and the signature information are determined by a communication server based on a screen projection request of a screen projection end and are issued to the display end associated with the screen projection end by the communication server;

checking the signature information, and judging whether the information mark is matched with the identity mark according to a preset information-identity authority group when the signature checking passes; the preset information-identity authority group is established based on an authority establishment request sent by the communication server;

if yes, 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;

The signature information is used for verifying whether the identity of the screen throwing end is true encryption information or not, and the signature information is generated by the communication server based on the identity of the display end.

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

receiving a permission establishment request sent by a communication server, wherein the permission establishment request comprises the information identifier and the identity identifier of the display end;

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

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

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

receiving an authority update request sent by the communication server, wherein the authority update request comprises an identity of the display end and an updated information identifier; wherein the updated information identification is generated based on the new screen-drop request;

And updating the established information-identity authority group according to the identity of the display end and the updated information identity.

5. The method of claim 4, wherein updating the set of established information-identity rights according to the identity of the presentation end and the updated information identity comprises:

establishing a new information-identity authority group according to the identity of the display end and the updated information identity, and replacing the established information-identity authority group containing the identity of the display end by utilizing the latest established information-identity authority group;

or adding the updated information identifier into an established information-identity authority group containing the identity identifier of the display end.

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

receiving an authority removal request sent by the communication server, wherein the authority removal request comprises an identity of the display end;

and clearing the established information-identity authority group containing the identity identifier of the display end according to the authority clearing request.

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

8. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the signing verification of the signature information comprises the following steps: and checking the signature information according to the identity of the display end.

9. The method of claim 8, wherein the signing the signature information according to the identity of the display end comprises:

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

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

10. The method according to any one of claims 1-9, applied to a conference room screen scene; correspondingly, the display end is display equipment in the conference room system.

11. A screen projection method, applied to a communication server, comprising:

sending a permission establishment request to an information server, wherein the permission establishment request comprises the information identifier and the identity identifier, so that the information server establishes an information-identity permission group according to the information identifier and the identity 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 the information server, the information server is further enabled to conduct signature verification on the signature information, when the signature verification passes, whether the information identification is matched with the identity identification or not is judged according to the information-identity authority group, and when the information identification is matched with the identity identification, screen information to be screened corresponding to the information identification is returned to the display end, so that the display end displays the screen information to be screened;

12. The method of claim 11, wherein the identity of the presentation end includes a communication range identifier of a communication range to which the presentation end belongs;

and, the communication range identification is generated by:

analyzing the identity of the screen throwing end and the connection information of the display end in the screen throwing request;

and acquiring the identity of the display end corresponding to the connection information, and creating a communication range according to the identity of the screen throwing end and the identity of the display end to generate a communication range identifier.

13. The method as recited in claim 12, further comprising:

and periodically updating the connection information of the display end and transmitting the connection information to the display end so that the display end transmits the connection information to the screen throwing end.

14. The method as recited in claim 11, further comprising:

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

sending a permission update request to an information server, wherein the permission update request comprises the identity of the display end and the updated information identity, so that the information server updates the established information-identity permission group according to the identity of the display end and the updated information identity;

15. The method of claim 11, wherein causing the information server to sign the signature information comprises: and enabling the information server to check the signature information according to the identity of the display end.

16. The method of claim 15, wherein causing the information server to verify the signature information based on the identity of the presentation end comprises:

decrypting the signature information by the information server by using a preset public key, and judging whether a decryption result is consistent with the identity of the display end; if yes, checking the signature;

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

the display end is also used for displaying the information to be projected;

18. The system of claim 17, further comprising:

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

the information server is used for responding to the authority update request and updating the established information-identity authority group according to the identity of the display end and the updated information identity;

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

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

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

19. The system according to claim 17 or 18, applied to a conference room screen scene; correspondingly, the display end is display equipment in the conference room system.

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

the first request receiving module is used for receiving an information acquisition request sent by the 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 identification and the signature information are determined by a communication server based on a screen projection request of a screen projection end and are issued to the display end associated with the screen projection end by the communication server;

the permission judging module is used for carrying out signature verification on the signature information and judging whether the information identification is matched with the identity identification according to a preset information-identity permission group when the signature verification passes; the preset information-identity authority group is established based on an authority establishment request sent by the communication server;

the information return module is used for returning the information to be screened corresponding to the information identification to the display end if the information identification is matched with the identity identification, so that the display end displays the information to be screened;

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

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 identity identifier;

the information issuing module is used for 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, the information server further performs signature verification on the signature information, and when the signature verification passes, whether the information identifier is matched with the identity identifier or not is judged according to the information-identity authority group, and when the information identifier is matched with the identity identifier, screen information to be screened corresponding to the information identifier is returned to the display end, so that the display end displays the screen information to be screened;

22. An electronic device, the electronic device comprising:

one or more processors;

storage means for storing one or more programs,

when the one or more programs are executed by the one or more processors, the one or more processors implement the method of screening for application to an information server as claimed in any one of claims 1 to 10, or the method of screening for application to a communication server as claimed in any one of claims 11 to 16.

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