CN111556359A - Screen projection system and method based on television box - Google Patents
Screen projection system and method based on television box Download PDFInfo
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- CN111556359A CN111556359A CN202010334350.7A CN202010334350A CN111556359A CN 111556359 A CN111556359 A CN 111556359A CN 202010334350 A CN202010334350 A CN 202010334350A CN 111556359 A CN111556359 A CN 111556359A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
Abstract
The invention provides a screen projection system and method based on a television box, which relate to the technical field of computers and comprise the following steps: the screen-casting sending equipment starts searching in the local area network according to the screen-casting request instruction, outputs an equipment identifier when a television box is searched, establishes a first communication connection with the corresponding television box according to the equipment identifier and outputs a screen-casting request instruction; when the television box is not searched, establishing a second communication connection with the television box and outputting a screen projection request instruction; the television box performs screen projection according to a screen projection request instruction received through the first communication connection; and calculating the data volume of screen projection contents according to the screen projection request instruction received through the second communication connection, performing screen projection when the data volume is smaller than the data volume threshold value, sending the screen projection request instruction and the equipment identifier to the cloud server when the data volume is not smaller than the data volume threshold value, and sending the screen projection request instruction to the television box corresponding to the equipment identifier by the cloud server to perform screen projection. The screen projection method has the beneficial effect that the screen projection can be realized through various modes.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a screen projection system and method based on a television box.
Background
The television box is a small-sized computing terminal device, and can realize web browsing, network video playing and application program installation on the traditional television by simply connecting the television box with the traditional television through technologies such as HDMI (high-definition multimedia interface) or color difference lines, even can project photos and videos in a mobile phone and a flat panel into a large-screen television at home.
In the prior art, the information can be quickly shared in a screen projection mode. In the screen projection process, screen projection information needing to be shared is sent to large-size screen projection receiving equipment such as a projector, a liquid crystal display screen and a splicing screen by a user of the screen projection sending equipment, and screen projection content is displayed by the screen projection receiving equipment connected with the television box, so that other users can conveniently and uniformly view the screen projection content. For example, the screen projection process can be involved in application scenes such as enterprise meetings, teaching demonstration, collective declaration and the like.
However, the existing screen projection mode can only realize screen projection through a local area network, that is, the screen projection sending device and the television box must be in the same local area network, so that the use experience of a user is influenced, and the existing screen projection content is single.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a screen projection system based on a television box, which specifically comprises the following steps:
each television box is connected with a screen projection receiving device and is provided with a preset device identifier;
throw screen sending equipment, connect a high in the clouds server, the high in the clouds server connects each respectively the TV box, throw screen sending equipment includes:
the device searching unit is used for starting searching in a local area network where the screen-casting sending device is located according to an external screen-casting request instruction containing screen-casting content, outputting the device identification of the television box for a user to select when the television box is searched, then generating a first searching result according to the device identification selected by the user, and outputting a second searching result when the television box is not searched;
the first sending unit is connected with the equipment searching unit and used for establishing a first communication connection with the television box corresponding to the equipment identifier according to the first searching result and sending the screen projection request instruction to the television box through the first communication connection;
the second sending unit is connected with the equipment searching unit and used for establishing second communication connection with the television box according to the second searching result and sending the screen projection request instruction to the television box through the second communication connection;
the television box comprises:
the first processing unit is used for controlling the screen projection receiving equipment to project the screen according to the screen projection request instruction received through the first communication connection;
the second processing unit is used for calculating the data volume of the screen projection content according to the screen projection request instruction received through the second communication connection, controlling the screen projection receiving equipment to project the screen according to the screen projection content when the data volume is smaller than a preset data volume threshold value, and generating a processing result containing the equipment identifier when the data volume is not smaller than the data volume threshold value;
the screen projection sending device further comprises a third sending unit, wherein the third sending unit is used for sending the screen projection request instruction and the device identification to the cloud server according to the processing result, so that the screen projection request instruction is sent to the television box corresponding to the device identification through the cloud server, and the screen projection receiving device is controlled to project the screen according to the screen projection content.
Preferably, the second communication connection is established between the screen projection sending device and the television box in a Bluetooth pairing mode.
Preferably, a corresponding relationship list between the device identifier of each television box and the registration name of the user bound to the television box is pre-stored in the cloud server;
the television box further includes a content sharing unit, which is configured to allow the user to send the current viewing content and the registration name to be shared to the cloud server, and the cloud server shares the current viewing content to the television box associated with the device identifier corresponding to the registration name.
Preferably, the screen projection sending device comprises a PC, and/or a tablet computer, and/or a smart phone, and/or a PDA.
Preferably, the system further comprises a message pushing server connected to the television box and used for pushing a real-time message to the television box;
the television box further comprises a message receiving unit, which is used for receiving the real-time message pushed by the message pushing server in real time and sending the real-time message to the screen-projecting receiving equipment for displaying.
Preferably, the television box further includes a program recommending unit, configured to generate a program recommendation list associated with the screen-shot content according to the screen-shot content, and send the screen-shot content and the program recommendation list to the screen-shot receiving device, so that the user can select to watch the program.
A screen projection method based on a television box is applied to any one of the screen projection systems based on the television box, and the screen projection method specifically comprises the following steps:
step S1, the screen projection sending device starts to search in the local area network where the screen projection sending device is located according to an external screen projection request instruction containing screen projection content:
if the television box is searched, outputting the device identification of the television box for selection by a user, and then turning to step S2;
if the television box is not searched, turning to step S4;
step S2, the screen projection sending equipment establishes a first communication connection according to the equipment identification selected by the user and the television box corresponding to the equipment identification, and sends the screen projection request instruction to the television box through the first communication connection;
step S3, the television box controls the screen projection receiving equipment to project the screen according to the screen projection content according to the screen projection request instruction, and then quits;
step S4, the screen-casting sending device establishes a second communication connection with the television box, and sends the screen-casting request instruction to the television box through the second communication connection, and the television box calculates the data volume of the screen-casting content according to the screen-casting request instruction:
if the data volume is smaller than a preset data volume threshold value, returning to the step S3;
if the data amount is not less than the data amount threshold, generating a processing result including the device identifier, and then turning to step S5;
step S5, the screen projection sending device sends the screen projection request instruction and the device identification to the cloud server according to the processing result, so that the screen projection request instruction is sent to the television box corresponding to the device identification through the cloud server, and the screen projection receiving device is controlled to project the screen according to the screen projection content.
Preferably, in step S4, the second communication connection is established between the screen projection sending device and the television box in a bluetooth pairing manner.
The technical scheme has the following advantages or beneficial effects:
1) the screen can be projected in various ways, so that the use experience of a user is effectively improved;
2) the television box can generate a related program recommendation list through the screen projection content and recommend the program recommendation list to the user, so that the watching selection range of the user is enriched.
Drawings
FIG. 1 is a schematic diagram of a television box-based projection system according to a preferred embodiment of the present invention;
fig. 2 is a flow chart of a television box-based screen projection method according to a preferred embodiment of the invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided a television box-based screen projection system, as shown in fig. 1, which specifically includes:
each television box 1 is connected with a screen projection receiving device 2, and each television box 1 is provided with a preset device identifier;
throw screen sending equipment 3, connect a high in the clouds server 4, each TV box 1 is connected respectively to high in the clouds server 4, throws screen sending equipment 3 and includes:
the device searching unit 31 is configured to start a search in a local area network where the screen-casting sending device 3 is located according to an external screen-casting request instruction containing screen-casting content, output a device identifier of the television box for a user to select when the television box 1 is searched, then generate a first search result according to the device identifier selected by the user, and output a second search result when the television box 1 is not searched;
the first sending unit 32 is connected with the equipment searching unit 31 and used for establishing a first communication connection with the television box 1 corresponding to the equipment identifier according to the first search result and sending the screen projection request instruction to the television box 1 through the first communication connection;
the second sending unit 33 is connected with the equipment searching unit 31 and used for establishing a second communication connection with the television box 1 according to a second searching result and sending the screen projection request instruction to the television box 1 through the second communication connection;
the television box 1 includes:
the first processing unit 11 is configured to control the screen projection receiving device 2 to perform screen projection according to the screen projection content according to the screen projection request instruction received through the first communication connection;
the second processing unit 12 is configured to calculate a data volume of the screen-projecting content according to the screen-projecting request instruction received through the second communication connection, control the screen-projecting receiving device 2 to project a screen according to the screen-projecting content when the data volume is smaller than a preset data volume threshold, and generate a processing result including a device identifier when the data volume is not smaller than the data volume threshold;
the screen projection sending device 3 further includes a third sending unit 34, configured to send the screen projection request instruction and the device identifier to the cloud server 4 according to the processing result, so as to send the screen projection request instruction to the television box 1 corresponding to the device identifier through the cloud server 4, so as to control the screen projection receiving device 2 to project a screen according to the screen projection content.
Specifically, in this embodiment, when the screen projection system based on the television box performs the screen projection operation, the screen projection sending device 3 preferentially starts to search in the same local area network where the screen projection sending device 3 is located, and if the corresponding television box 1 is searched, the first communication connection is directly established with the television box 1, and then the screen projection receiving device 2 is controlled by the television box 1 to display the screen projection content, so that the screen projection operation is realized.
If the corresponding television box 1 is not searched in the local area network, a common method is that the local area network where the television box 1 is located is checked through a remote controller equipped in the television box, then the local area network where the screen projection sending device 3 is located is checked, and finally the screen projection sending device 3 and the television box 1 are set, so that the screen projection sending device 3 and the television box 1 are located in the same local area network, and screen projection is further achieved. Therefore, in this embodiment, if the corresponding television box 1 is not searched in the local area network, the local area network is abandoned for communication, but a second communication connection is preferably established with the television box 1 in a bluetooth pairing manner, and a screen projection request instruction is sent to the television box 1 through the second communication connection; the bluetooth of the television box 1 is preferably in a normally open state, and the screen projection sending device 3 can be automatically paired only by opening the bluetooth of the device without operating multiple devices.
Further preferably, after the second communication connection is established, the television box 1 preferably performs data volume calculation on the screen projection content, and if the data volume is smaller than a preset data volume threshold, it indicates that the preset screen projection effect can be achieved by directly projecting the data volume through the second communication connection, and at this time, directly projecting the screen is selected; if the data volume is not less than the preset data volume threshold, phenomena such as communication errors and the like may occur through direct screen projection, and the watching experience of a user is influenced. Therefore, in this embodiment, after the second communication connection is established, the screen projection sending device 3 can obtain the device identifier of the television box 1, the device identifier is the only device identifier, and the device identifier and the screen projection request instruction are sent to the cloud server 4 at the same time, and then the screen projection request instruction is sent to the television box 1 corresponding to the device identifier through the cloud server 4, so that the screen projection receiving device 2 is controlled by the television box 1 to display the screen projection content, thereby implementing the screen projection operation.
In a preferred embodiment of the present invention, in a lan environment, the screen projection sending device 3 opens the screen projection function, can search for devices under the current lan that conform to the protocol, and projects the received screen projection content including but not limited to audio and video content to the screen projection receiving device 2 as the target screen through the tv box 1.
The screen projection function realized by the local area network is based on a UPnP protocol under a DLNA standard, and comprises a device addressing part, a device discovery part, a device description part, a device control part, an event notification part and the like, wherein the screen projection sending device 3 and the television box 1 are universal plug and play (UPnP) devices.
Device addressing: when a UPnP device joins a local area network, it will obtain a dynamically assigned IP address, which will be the unique address for this device.
Device discovery: after the unique address exists, the UPnP devices on the whole network can be actively searched in a multicast or unicast mode.
Description of the apparatus: after the device is searched, in order to further understand the device, the XML description file needs to be acquired and parsed, and the description file is divided into a device description file and a service description file. The device description document is a description of basic information of the device, including manufacturer information, device information, basic service information included in the device, and the like, and by this information, the device name of the currently searched television box 1 can be displayed on the screen projection transmitting device 3 to allow the user to determine the target device for screen projection.
Controlling equipment: the control point and the service exchange information based on the SOAP protocol, and can write the action to be executed in the body of the SOAP protocol, and can also transmit the parameters in the body, such as transmitting the received video address as the screen projection content to the television box 1 as the playing device, and also can perform operations conforming to the protocol, such as playing, pausing, stopping, and the like of the video.
Event notification: when receiving the action to be executed transmitted by the screen projection transmitting equipment 3 serving as the control point, the television box 1 serving as the screen projection receiving end feeds back the information of success or failure of execution of the action to the control point, and the control point can perform the next operation according to the feedback information.
In the preferred embodiment of the present invention, the screen projection sending device 3 and the television box 1 establish the second communication connection by bluetooth pairing.
In a preferred embodiment of the present invention, a correspondence list between the device identifier of each television box 1 and the registration name of the user bound to the television box 1 is pre-stored in the cloud server 4;
the television box 1 further includes a content sharing unit 13, which is used for a user to send the currently viewed content and the registration name to be shared to the cloud server 4, and the cloud server 4 shares the currently viewed content to the television box 1 associated with the device identifier corresponding to the registration name.
In a preferred embodiment of the present invention, the screen projection sending device 3 comprises a PC, and/or a tablet computer, and/or a smart phone, and/or a PDA.
In a preferred embodiment of the present invention, the present invention further comprises a message pushing server 5, connected to the television box 1, for pushing a real-time message to the television box 1;
the television box further comprises a message receiving unit 14 for receiving the real-time message pushed by the message pushing server 5 in real time and sending the real-time message to the screen-casting receiving device 2 for display.
Specifically, in this embodiment, the message push server 5 preferably includes three subsystems, namely, a routing system (nameserver), a customer long connection system (TVPUSH), and a message persistence system (msgpersist).
The routing system (nameserver) is a core component for realizing the cluster function, when the television box 1 serving as the client is started, the routing system (nameserver) needs to be connected at first, and the routing system (nameserver) calculates an optimal long connection service address according to the server cluster load and returns the optimal long connection service address to the client.
The client long connection system (TVPUSH) and the client maintain long connection and are responsible for all push functions, and the push modes include one-to-one, one-to-many and all-push. The customer long connection system (TVPUSH) is a cluster, and can be dynamically expanded according to the user volume.
The message persistence system (msgpersist) is responsible for persisting messages and mainly comprises two queues, namely a new message queue and a sent message queue, wherein the new message queue stores all newly generated messages and is written into a disk in a delayed mode, and the sent message queue stores messages which are sent successfully. During message queue delay, if the same message appears in the sent message queue, the state of the message queue is updated, and the write operation to the disk is reduced
Further specifically, when the client long connection system (TVPUSH) pushes a message, the method specifically includes the following steps:
1. user online:
1) the television box 1 logs in through a device token (devicetoken), and records the device token (devicetoken) and a corresponding channel of a user in a memory of a customer long connection system (TVPUSH);
2) the client long connection system (TVPUSH) performs unified authentication login: the device token (devicetoken) and the corresponding channel are recorded in the memory, the user identification (uid) and the corresponding channel are recorded in the memory, and the remote dictionary service (redis) stores the user identification (uid).
2. Sending the whole message:
1) a notification message persistence system (msgpersist) is used for notifying that a message arrives and needs to be persisted;
2) traversing local devicetoken (UID) and sending a message;
3) notifying a message persistence system (msgpersist) that a local device token (devicetoken) has been sent;
4) notifying other clients of a long connection system (TVPUSH) that all messages arrive;
5) repeating the steps 2) and 3) by other client long connection systems (TVPUSH);
6) the user is not on-line, and the next time the user logs in, if the user is not expired, the user sends the login request
3. Customer long connection system (TVPUSH) buddy messages
1) A notification message persistence system (msgpersist) is used for notifying that a message arrives and needs to be persisted;
2) querying a remote dictionary service (redis) whether the user is online;
3) and sending the online user: traversing the local uid, if the local uid exists, sending the local uid, and informing a message persistence system (msgpersist) to send the local uid; does not exist locally, informs other clients of the long connection system (TVPUSH;
4) and if the user is not expired, the next time the user logs in, the user is sent.
4. Customer long connection system (TVPUSH) group offline message
1) The group member table records the last sent message id (id _ me) of the group member;
2) after the user recovers the online, acquiring all messages with ID > ID _ me, and adding a time criterion;
3) the last message sent by a user in the group member list is updated.
5. Heartbeat detection
The message push server 5 serving as a server sends heartbeat packets to the television box 1 serving as a client regularly, and if the heartbeat packets are overtime and exceed the specified times and no response is made, the connection is disconnected; and the client regularly detects whether the connection is normal, finds that the connection is disconnected and requires the routing system (nameserver) to obtain the optimal service address again, and then reconnects the customer long connection system (TVPUSH).
In a preferred embodiment of the present invention, the television box 1 further includes a program recommending unit 15, configured to generate a program recommendation list associated with the screen-projected content according to the screen-projected content, and send the screen-projected content and the program recommendation list to the screen-projected receiving device 2 for the user to select to watch.
Specifically, in this embodiment, when performing screen projection operation, the screen projection receiving device 2 can display the program recommendation list in addition to the screen projection content, and the user may preferably add the program recommendation list to the viewing list to view the program recommendation list after the current screen projection content is finished, so that the viewing selection range of the user is enriched.
A screen projection method based on a television box is applied to any one of the screen projection systems based on the television box, and as shown in figure 2, the screen projection method specifically comprises the following steps:
step S1, the screen projection sending device starts to search in the local area network where the screen projection sending device is located according to an external screen projection request instruction containing screen projection content:
if the television box is searched, outputting the device identification of the television box for the user to select, and then turning to step S2;
if the television box is not searched, turning to step S4;
step S2, the screen projection sending equipment establishes a first communication connection according to the equipment identification selected by the user and the television box corresponding to the equipment identification, and sends a screen projection request instruction to the television box through the first communication connection;
step S3, the television box controls the screen projection receiving equipment to project the screen according to the screen projection content according to the screen projection request instruction, and then quits;
step S4, the screen projection sending equipment establishes a second communication connection with the television box, sends the screen projection request instruction to the television box through the second communication connection, and the television box calculates the data volume of the screen projection content according to the screen projection request instruction:
if the data volume is smaller than the preset data volume threshold, returning to the step S3;
if the data amount is not less than the data amount threshold, generating a processing result including the device identifier, and then proceeding to step S5;
and step S5, the screen projection sending equipment sends the screen projection request instruction and the equipment identification to the cloud server according to the processing result, so that the screen projection request instruction is sent to the television box corresponding to the equipment identification through the cloud server, and the screen projection receiving equipment is controlled to project the screen according to the screen projection content.
In a preferred embodiment of the present invention, in step S4, the screen projection sending device and the tv box establish the second communication connection through bluetooth pairing.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A screen projection system based on a television box is characterized by specifically comprising:
each television box is connected with a screen projection receiving device and is provided with a preset device identifier;
throw screen sending equipment, connect a high in the clouds server, the high in the clouds server connects each respectively the TV box, throw screen sending equipment includes:
the device searching unit is used for starting searching in a local area network where the screen-casting sending device is located according to an external screen-casting request instruction containing screen-casting content, outputting the device identification of the television box for a user to select when the television box is searched, then generating a first searching result according to the device identification selected by the user, and outputting a second searching result when the television box is not searched;
the first sending unit is connected with the equipment searching unit and used for establishing a first communication connection with the television box corresponding to the equipment identifier according to the first searching result and sending the screen projection request instruction to the television box through the first communication connection;
the second sending unit is connected with the equipment searching unit and used for establishing second communication connection with the television box according to the second searching result and sending the screen projection request instruction to the television box through the second communication connection;
the television box comprises:
the first processing unit is used for controlling the screen projection receiving equipment to project the screen according to the screen projection request instruction received through the first communication connection;
the second processing unit is used for calculating the data volume of the screen projection content according to the screen projection request instruction received through the second communication connection, controlling the screen projection receiving equipment to project the screen according to the screen projection content when the data volume is smaller than a preset data volume threshold value, and generating a processing result containing the equipment identifier when the data volume is not smaller than the data volume threshold value;
the screen projection sending device further comprises a third sending unit, wherein the third sending unit is used for sending the screen projection request instruction and the device identification to the cloud server according to the processing result, so that the screen projection request instruction is sent to the television box corresponding to the device identification through the cloud server, and the screen projection receiving device is controlled to project the screen according to the screen projection content.
2. The television box-based screen projection system of claim 1, wherein the screen projection sending device and the television box establish the second communication connection by bluetooth pairing.
3. The television box-based screen projection system according to claim 1, wherein a correspondence list between the device identifier of each television box and the registered name of the user bound to the television box is pre-stored in the cloud server;
the television box further includes a content sharing unit, which is configured to allow the user to send the current viewing content and the registration name to be shared to the cloud server, and the cloud server shares the current viewing content to the television box associated with the device identifier corresponding to the registration name.
4. The television box-based screen projection system according to claim 1, wherein the screen projection sending device comprises a PC, and/or a tablet computer, and/or a smart phone, and/or a PDA.
5. The television box-based screen projection system of claim 1, further comprising a message push server connected to the television box for real-time message push to the television box;
the television box further comprises a message receiving unit, which is used for receiving the real-time message pushed by the message pushing server in real time and sending the real-time message to the screen-projecting receiving equipment for displaying.
6. The television box-based screen projection system of claim 1, wherein the television box further comprises a program recommendation unit configured to generate a program recommendation list associated with the screen projection content according to the screen projection content, and send the screen projection content and the program recommendation list to the screen projection receiving device for the user to select for viewing.
7. A television box-based screen projection method, which is characterized by applying the television box-based screen projection system as claimed in any one of claims 1 to 6, and the screen projection method specifically comprises the following steps:
step S1, the screen projection sending device starts to search in the local area network where the screen projection sending device is located according to an external screen projection request instruction containing screen projection content:
if the television box is searched, outputting the device identification of the television box for selection by a user, and then turning to step S2;
if the television box is not searched, turning to step S4;
step S2, the screen projection sending equipment establishes a first communication connection according to the equipment identification selected by the user and the television box corresponding to the equipment identification, and sends the screen projection request instruction to the television box through the first communication connection;
step S3, the television box controls the screen projection receiving equipment to project the screen according to the screen projection content according to the screen projection request instruction, and then quits;
step S4, the screen-casting sending device establishes a second communication connection with the television box, and sends the screen-casting request instruction to the television box through the second communication connection, and the television box calculates the data volume of the screen-casting content according to the screen-casting request instruction:
if the data volume is smaller than a preset data volume threshold value, returning to the step S3;
if the data amount is not less than the data amount threshold, generating a processing result including the device identifier, and then turning to step S5;
step S5, the screen projection sending device sends the screen projection request instruction and the device identification to the cloud server according to the processing result, so that the screen projection request instruction is sent to the television box corresponding to the device identification through the cloud server, and the screen projection receiving device is controlled to project the screen according to the screen projection content.
8. The television box-based screen projection method according to claim 7, wherein in the step S4, the screen projection sending device and the television box establish the second communication connection by means of Bluetooth pairing.
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| CN202010334350.7A CN111556359A (en) | 2020-04-24 | 2020-04-24 | Screen projection system and method based on television box |
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| CN202010334350.7A CN111556359A (en) | 2020-04-24 | 2020-04-24 | Screen projection system and method based on television box |
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| CN112199062A (en) * | 2020-10-10 | 2021-01-08 | 上海博泰悦臻网络技术服务有限公司 | Wireless screen projection implementation method, system, medium, vehicle-mounted terminal and intelligent terminal |
| CN112711363A (en) * | 2020-12-30 | 2021-04-27 | 苏州必捷网络有限公司 | Screen projection auxiliary device, screen projection auxiliary system and wireless screen projection system |
| CN114666641A (en) * | 2022-05-25 | 2022-06-24 | 舟谱数据技术南京有限公司 | Dealer multi-scene television large-screen projection system and method |
| CN115150649A (en) * | 2022-06-14 | 2022-10-04 | 阿里云计算有限公司 | Media stream playing method, equipment and storage medium |
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Application publication date: 20200818 |