WO2020198970A1

WO2020198970A1 - Multi-terminal programme playing method and system

Info

Publication number: WO2020198970A1
Application number: PCT/CN2019/080513
Authority: WO
Inventors: 王伙荣; 宗靖国; 钟庆彤
Original assignee: 西安诺瓦电子科技有限公司
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-08
Also published as: CN112020863A

Abstract

Disclosed is a multi-terminal programme playing method, wherein same is applied to a system including a master terminal and a plurality of slave terminals, and comprises: the master terminal decoding a target programme to obtain first decoded data, wherein the first decoded data includes video data; the master terminal playing the first decoded data, and performing streaming media encoding on the first decoded data to obtain streaming media data; the master terminal sending the streaming media data; the plurality of slave terminals respectively receiving the streaming media data; and the plurality of slave terminals respectively performing streaming media decoding on the streaming media data respectively received thereby to obtain second decoded data, and playing the decoded data. Further disclosed is a multi-terminal programme playing system.

Description

Multi-terminal program playing method and system

Technical field

This application relates to the technical field of media playback control, and in particular to a multi-terminal program playback method and a multi-terminal program playback system.

Background technique

The LED Display Control System (LED Display Control System), as an LED display control terminal, is a system that controls the LED display to correctly display user programs according to user needs. According to the different ways of access signal, the LED display control system can be divided into synchronous control system and asynchronous control system.

Synchronous control system refers to the real-time mapping and display of the screen displayed on the computer to the LED display. The connection method is generally to connect the upper computer, the sending card, the receiving card and the LED display in sequence. The synchronization control system requires that each LED display screen needs to be equipped with a host computer. Therefore, the cost of the synchronization control system is higher on a small-area display screen, and it is generally used for on-site program broadcast occasions.

Asynchronous control system means that the playlist and the media involved in the list are sent to the asynchronous control card through U disk, serial port, SD card or network. The asynchronous control card itself controls and displays without the upper computer and the sending card. It is generally used for timing Remote program broadcast occasions.

With the continuous expansion of the application range of LED display screens, there is gradually a demand for a large number of LED display screen broadcast control terminals to simultaneously play the same program. In the prior art, in order to realize the synchronized playback of programs by different LED display screen broadcast control terminals, each LED display screen broadcast control terminal needs to perform time calibration to ensure the unity of its system time, thereby ensuring the synchronized playback of programs.

However, due to factors such as the hardware performance difference of each LED display screen broadcast control terminal and the network delay caused by the difference of the communication link length, it will still cause the program to be played out of synchronization and the user experience is poor.

Summary of the invention

The embodiments of the present application provide a multi-terminal program playing method and a multi-terminal program playing system to achieve the technical effect of synchronous program playing.

On the one hand, the multi-terminal program playing method proposed by the embodiment of the present application is applied to a system including a master terminal and multiple slave terminals; the multi-terminal program playing method includes: the master terminal decodes the target program Obtaining first decoded data, where the first decoded data includes video data; the main terminal plays the first decoded data, and performs streaming media encoding on the first decoded data to obtain streaming media data; The master terminal sends the streaming media data; the multiple slave terminals respectively receive the streaming media data; and the multiple slave terminals respectively perform streaming media decoding on the streaming media data they receive to obtain a second decoding And play the second decoded data.

In an embodiment of the present application, sending the streaming media data by the master terminal includes: sending the streaming media data to a streaming media relay server in a push streaming mode; and receiving the streaming media by the multiple slave terminals respectively The data includes: receiving the streaming media data from the streaming media relay server respectively.

In an embodiment of the present application, the multiple slave terminals receiving the streaming media data respectively include: receiving the streaming media data in a wireless spread spectrum communication manner respectively.

In an embodiment of the present application, before the main terminal decodes the target program to obtain the first decoded data, the method further includes: the main terminal receives an externally input program and stores the received program locally; and the main terminal The terminal reads the target program from the programs stored locally.

In an embodiment of the present application, the main terminal includes a first embedded processor and a first LoRa module and a video interface respectively connected to the first embedded processor, and the first embedded processor has a built-in A first video server and a streaming media server. The first video server decodes the target program to obtain the first decoded data and plays the first decoded data. After decoding the data, perform streaming media encoding to obtain the streaming media data, and send the streaming media data through the first LoRa module; each of the slave terminals includes: a second embedded processor and a second embedded processor connected to the second The second LoRa module and the image output port of the embedded processor, and the image output port is an Ethernet interface, the second embedded processor has a built-in streaming media client and a second video server, and the streaming media client The terminal receives the streaming media data through the second LoRa module, and performs streaming media decoding on the received streaming media data to obtain second decoded data, and the second video server plays the second decoded data.

On the other hand, a multi-terminal program playing system proposed by an embodiment of the present application includes: a main terminal, configured to decode a locally stored target program to obtain first decoded data, play the first decoded data and The first decoded data is subjected to streaming media encoding to obtain streaming media data, and the streaming media data is sent, wherein the first decoded data includes video data; and a plurality of slave terminals are respectively used to receive the streaming media Data, and respectively used to perform streaming media decoding on the respective received streaming media data to obtain second decoded data, and to play the second decoded data.

In an embodiment of the present application, the multi-terminal program playing system further includes: a streaming media relay server connected to the master terminal and located in the same local area network as the multiple slave terminals; wherein the master terminal is used to The streaming media data is sent to the streaming media transfer server in a push streaming mode; wherein the multiple slave terminals are used to respectively receive the streaming media data from the streaming media transfer server.

In an embodiment of the present application, the main terminal includes: an embedded processor with a built-in video server and a streaming media server; a network access module, connected to the embedded processor, for receiving externally input programs and Provided to the embedded processor for local storage; and a video interface connected to the video server of the embedded processor; wherein the video server is used to decode the target program stored locally to obtain the First decoded data, and used to play the first decoded data to generate an image display control signal corresponding to the video data; wherein, the streaming server is used to stream the first decoded data Encoding to obtain the streaming media data, and sending the streaming media data.

In an embodiment of the present application, the main terminal further includes: a programmable logic device connected to the video server of the embedded processor; an image output port; an Ethernet physical layer transceiver connected to the Between the programming logic device and the image output port; and an audio output interface, connected to the video server of the embedded processor.

In an embodiment of the present application, the main terminal further includes: a wireless spread spectrum communication module connected to the streaming media server of the embedded processor.

In an embodiment of the present application, each of the slave terminals includes: a second embedded processor with a built-in streaming media client and a second video server; a second wireless spread spectrum communication module connected to the second embedded processor The streaming media client of the embedded processor; and a second image output port connected to the second video server of the second embedded processor; wherein the streaming media client is used to pass through the second The wireless spread spectrum communication module receives the streaming media data, and performs streaming media decoding on the received streaming media data to obtain the second decoded data; wherein, the second video server is used to play the second decoded data The post data is used to generate an image display control signal corresponding to the video data.

In an embodiment of the present application, each of the slave terminals further includes: a second programmable logic device and an Ethernet physical layer transceiver; wherein the second image output port sequentially transmits and receives through the Ethernet physical layer And the second programmable logic device are connected to the second video server of the second embedded processor.

In an embodiment of the present application, each of the slave terminals further includes: an audio output interface connected to the second video server of the second embedded processor.

In an embodiment of the present application, each of the slave terminals further includes: a video interface connected to the second video server of the second embedded processor.

In an embodiment of the present application, the second wireless spread spectrum communication module is a LoRa module.

It can be seen from the above that, through the design of the master terminal and the slave terminal in the foregoing embodiment of this application, multiple slave terminals can simultaneously and uniformly receive the program pushed by the master terminal in the streaming media data format, which can be used on multiple slave terminals. The program is played synchronously and sent to the display screens connected to each slave terminal for display; furthermore, through the setting of the video interface on the master terminal, you can also watch the content of the program in advance on the master terminal. In addition, through the structural design of multiple slave terminals, they can be connected to the LED display screen, so that the synchronized broadcast program can be displayed on the LED display screen.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic diagram of the architecture of a multi-terminal program playing system according to the first embodiment of the application.

FIG. 2A is a schematic diagram of the structure of the main terminal shown in FIG. 1.

FIG. 2B is a schematic diagram of the structure of the slave terminal shown in FIG. 1.

FIG. 3A is a schematic structural diagram of a main terminal in a multi-terminal program playing system according to the second embodiment of the application.

FIG. 3B is a schematic diagram of the structure of the slave terminal in the multi-terminal program playing system of the second embodiment of the application.

Fig. 4A is a schematic structural diagram of a main terminal in a multi-terminal program playing system according to the third embodiment of the application.

4B is a schematic structural diagram of a slave terminal in the multi-terminal program playing system of the third embodiment of this application.

FIG. 5 is a schematic structural diagram of a multi-terminal program playing system according to the fourth embodiment of this application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[First embodiment]

Referring to FIG. 1, a multi-terminal program playing system 10 provided by the first embodiment of the present application includes: a master terminal 11 and multiple slave terminals 13. Each slave terminal 13 is connected to the master terminal 11 via a network, and it can uniformly receive the program pushed by the master terminal 11 at the same time for synchronized playback of the program. Furthermore, each slave terminal 13 can be connected to multiple display screens, such as multiple LED display screens 20, to simultaneously display program content on each LED display screen 20; the master terminal 11 can be connected to a display 30 such as a liquid crystal display or an OLED display. In addition, the main terminal 11 can also receive the program released from the program publishing terminal 40 and store it locally, and the program publishing terminal 40 here is, for example, a cloud server terminal, or a mobile phone terminal or a PC upper computer terminal installed with program publishing software. Therefore, the user can release the program and its playing plan to the main terminal 11 from the cloud server terminal, the mobile phone terminal or the PC upper computer terminal in a wired or wireless manner.

2A, the main terminal 11 of this embodiment includes, for example, an embedded processor 111, a programmable logic device 112, an Ethernet physical layer transceiver 113, an image output port 114, an audio output interface 115, a video interface 116, and LoRa ( Long Range) module 117, network access module 118, volatile memory 119a, non-volatile memory 119b, and volatile memory 119c.

Among them, the embedded processor 111 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 2A, the embedded processor 111 has a built-in video server 1111 and a streaming media server 1113. The programmable logic device 112 is connected to the embedded processor 111, for example, the video server 1111 connected to the embedded processor 111, which may be an FPGA (Field Programmable Gate Array) device. The Ethernet physical layer transceiver 113 is connected between the programmable logic device 112 and the image output port 114, and the image output port 114 is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 115 is connected to the embedded processor 111, such as the video server 1111 connected to the embedded processor 111, which is, for example, an RCA interface (commonly known as a lotus socket, also known as an AV interface) or a TRS (Tip-Ring-Sleeve) interface. The video interface 116 is connected to the embedded processor 111, for example, the video server 1111 connected to the embedded processor 111, which is, for example, a digital video interface such as HDMI, or even an analog video interface. The LoRa module 117 is connected to the embedded processor 111, for example, the streaming media server 1113 connected to the embedded processor 111; of course, the LoRa module 117 can also be replaced with other wireless spread spectrum communication modules. The network access module 118 is connected to the embedded processor 111, which includes, for example, a wired network module, a WiFi module, and/or a mobile network module such as a 3G/4G module. The volatile memory 119a and the nonvolatile memory 119b are respectively connected to the embedded processor 111, wherein the volatile memory 119a is, for example, DDR3, and the nonvolatile memory 119b is, for example, flash memory (Flash). The volatile memory 119c is connected to the programmable logic device 112, which is, for example, DDR2.

For the main terminal 11 shown in FIG. 2A, since the embedded processor 111 has a built-in video server 1111 and a streaming media server 1113, the video server 1111 can read the target program stored in the non-volatile memory 119b and decode the target program Obtain the first decoded data and play the first decoded data to generate an image display control signal corresponding to the video data in the target program. After the image display control signal is input to the programmable logic device 112, the The programming logic device 112 performs data packaging operations based on the Ethernet protocol, and then outputs to the image output port 114 via the Ethernet physical layer transceiver 113, and then displays it on the LED display connected to the image output port 114. When the target program contains audio data, when the video server 1111 plays the first decoded data, it will synchronously generate an audio signal, such as an I2S format audio signal, and output it to the audio output interface 115. On the other hand, the image display control signal generated when the video server 1111 plays the first decoded data can also be output to the video interface 116 to watch the target program on the display 30 in advance. Furthermore, the streaming media server 1113 may perform streaming media encoding on the first decoded data to obtain streaming media data, and send the streaming media data through the LoRa module 117. In addition, the network access module 118 can be connected to the program publishing terminal 40 in a wired or wireless manner to receive the user program published by the program publishing terminal 40 and send it to the embedded processor 111 for local storage, for example, to the non-volatile memory 119b . It is worth noting here that, in a certain embodiment, when the main terminal 11 does not need to be connected to the LED display, the programmable logic device 112, the Ethernet physical layer transceiver 113, the image output port 114 and the volatile Storage 119c. Even in a certain embodiment, the audio output interface 115 may be further omitted.

2B, the slave terminal 13 of this embodiment includes: an embedded processor 131, a programmable logic device 132, an Ethernet physical layer transceiver 133, an image output port 134, an audio output interface 135, a LoRa module 137, and volatile The memory 139a, the nonvolatile memory 139b, and the volatile memory 139c.

Among them, the embedded processor 131 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 2B, the embedded processor 131 has a streaming media client 1311 and a video server 1313 built in. The programmable logic device 132 is connected to the embedded processor 131, for example, the video server 1313 connected to the embedded processor 131, which may be an FPGA device. The Ethernet physical layer transceiver 133 is connected between the programmable logic device 132 and the image output port 134, and the image output port 134 is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 135 is connected to an embedded processor 131, such as a video server 1313 connected to the embedded processor 131, which is, for example, an RCA interface or a TRS interface. The LoRa module 137 is connected to the embedded processor 131, for example, the streaming media client 1311 connected to the embedded processor 131; the settings of the LoRa module 137 and the LoRa module 117 in FIG. 2A facilitate the establishment of a Lora communication message mechanism, so that the master terminal 11 and each slave The terminal 13 is in the same frequency channel, of course, the LoRa module 137 can also be replaced with other wireless spread spectrum communication modules. The volatile memory 139a and the nonvolatile memory 139b are respectively connected to the embedded processor 131, where the volatile memory 139a is, for example, DDR3, and the nonvolatile memory 139b is, for example, flash memory. The volatile memory 139c is connected to the programmable logic device 132, which is, for example, DDR2.

For the slave terminal 13 shown in FIG. 2B, since the embedded processor 131 has a built-in streaming media client 1311 and a video server 1313, the streaming media client 1311 can receive the streaming media data sent by the master terminal 11 through the LoRa module 117 through the LoRa module 137 , And perform streaming media decoding on the received streaming media data to obtain second decoded data, and the video server 1313 may play the second decoded data to generate an image display control signal corresponding to the video data in the target program After the image display control signal is input to the programmable logic device 132, the programmable logic device 132 performs the data packing operation based on the Ethernet protocol, and then outputs it to the image output port 134 through the Ethernet physical layer transceiver 133 to display On the LED display 20 connected to the image output port 134. When the target program contains audio data, the video server 1313 will synchronously generate an audio signal such as an I2S format audio signal to output to the audio output interface 135 when playing the second decoded data.

In view of the above, the master terminal 11 and multiple slave terminals 13 in this embodiment construct a local area network through a wired or wireless manner. When each slave terminal 13 connected to the master terminal 11 simultaneously receives the streaming media server 1113 of the master terminal 11 uniformly. The pushed programs in the streaming media format can be synchronized to display the user programs on the LED display screens 20 respectively connected to the slave terminals 13, and the target program can be watched in advance on the master terminal 11. In this embodiment, the main terminal 11, for example, the asynchronous control system of the LED display screen, realizes the synchronous display of the program on the large-scale LED display screen 20 by synchronously pushing the program in a streaming media format.

To sum up, this embodiment realizes that programs are played synchronously on a large-scale slave terminal 13 such as an LED display asynchronous control system by means of synchronous push of streaming media, which can have one or more of the following beneficial effects: (1) Streaming Media technology has the characteristics of second-level response, ultra-low latency, high performance and high distribution. The technical framework is built into the LED display asynchronous control system, which greatly improves the program transmission rate and makes the program push and playback more synchronized; ( 2) It greatly reduces the bad experience caused by the inconsistent playback between programs due to delay; (3) The use of streaming media technology makes data storage more convenient and the program quality is improved; and (4) Enables the asynchronous control of the LED display The system supports both stand-alone deployment and cluster deployment, which can achieve thousands of concurrent to millions of concurrent, and the number of loads on the LED display asynchronous control system has increased significantly.

In addition, it is worth mentioning that in other embodiments, the slave terminal 13 and the master terminal 11 may also have the same hardware structure, that is, they may only be different from the software modules in the embedded processor 111/131, for example, the former is configured with The streaming media client 1311 is configured with a streaming media server 1111.

[Second embodiment]

As shown in FIG. 3A, the main terminal 21 in a multi-terminal program playing system provided by the second embodiment of the present application includes: an embedded processor 211, an Ethernet physical layer transceiver 213, an image output port 214, and an audio output Interface 215, video interface 216, network communication module 217, volatile memory 219a and non-volatile memory 219b.

Among them, the embedded processor 211 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 3A, the embedded processor 211 has a built-in video server 2111 and a streaming media server 2113. The Ethernet physical layer transceiver 213 is connected to the embedded processor 211, such as a video server 2111 connected to the embedded processor 211, which is, for example, a gigabit PHY chip; it is worth mentioning here that the embedded processor of this embodiment Because 211 is equipped with a data packaging function based on the Ethernet protocol, it can be directly connected to the Ethernet physical layer transceiver 213 through the PCB trace, without the need to set a programmable between the embedded processor 211 and the Ethernet physical layer transceiver 213 Logic device. The image output port 214 is connected to the Ethernet physical layer transceiver 213, which is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 215 is connected to the embedded processor 211, such as a video server 2111 connected to the embedded processor 211, which is, for example, an RCA interface or a TRS interface. The video interface 216 is connected to the embedded processor 211, such as the video server 2111 connected to the embedded processor 211, which is, for example, a digital video interface such as HDMI, or even an analog video interface. The network communication module 217 is connected to the embedded processor 211, such as the streaming media server 2113 connected to the embedded processor 211, which includes, for example, a wired network module, a WiFi module, a mobile network module such as a 3G/4G module, and/or a LoRa module. The volatile memory 219a and the nonvolatile memory 219b are respectively connected to the embedded processor 211, where the volatile memory 219a is, for example, DDR3, and the nonvolatile memory 219b is, for example, flash memory.

For the main terminal 21 shown in FIG. 3A, since the embedded processor 211 has a built-in video server 2111 and a streaming media server 2113, the video server 2111 can read the target program stored in the non-volatile memory 219b and decode the target program Obtain the first decoded data, play the first decoded data to generate an image display control signal corresponding to the video data in the target program, and perform a data packaging operation on the image display control signal based on the Ethernet protocol, and then It is then output to the image output port 214 via the Ethernet physical layer transceiver 213, and then displayed on the LED display connected to the image output port 214. When the target program contains audio data, the video server 2111 will synchronously generate an audio signal such as an I2S format audio signal to output to the audio output interface 215 when playing the first decoded data. On the other hand, the image display control signal generated when the video server 2111 plays the first decoded data can also be output to the video interface 216 to watch the target program in advance on the display 30 (refer to FIG. 1). Furthermore, the streaming media server 2113 may perform streaming media encoding on the first decoded data to obtain streaming media data, and send the streaming media data through the network communication module 217. In addition, the network communication module 218 can also be connected to the program publishing terminal 40 (refer to FIG. 1) in a wired or wireless manner to receive the user program published by the program publishing terminal 40 and send it to the embedded processor 211 for local storage, for example, to non- Volatile memory 219b. It is worth noting here that in a certain embodiment, when the main terminal 21 does not need to be connected to the LED display screen, the Ethernet physical layer transceiver 213 and the image output port 214 may also be omitted. Even in a certain embodiment, the audio output interface 215 may be further omitted.

3B, the slave terminal 23 of this embodiment includes: an embedded processor 231, an Ethernet physical layer transceiver 233, an image output port 234, an audio output interface 235, a video interface 236, a network communication module 237, and a volatile memory 239a and non-volatile memory 239b.

Among them, the embedded processor 231 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 3B, the embedded processor 231 has a streaming media client 2311 and a video server 2313 built in. The Ethernet physical layer transceiver 233 is connected to the embedded processor 231, such as the video server 2313 connected to the embedded processor 231, which is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 235 is connected to the embedded processor 231, such as a video server 2313 connected to the embedded processor 231, which is, for example, an RCA interface or a TRS interface. The video interface 236 is connected to the embedded processor 231, such as a video server 2313 connected to the embedded processor 231, which may be a digital video interface such as an HDMI interface. The network communication module 237 is connected to the embedded processor 231, such as a streaming media client 2311 connected to the embedded processor 231. The volatile memory 239a and the nonvolatile memory 239b are respectively connected to the embedded processor 231, where the volatile memory 239a is, for example, DDR3, and the nonvolatile memory 239b is, for example, flash memory.

For the slave terminal 23 shown in FIG. 3B, since the embedded processor 231 has a streaming media client 2311 and a video server 2313 built in, the streaming media client 2311 can receive the stream sent by the master terminal 21 via the network communication module 217 through the network communication module 237 Media data and perform streaming media decoding on the received streaming media data to obtain second decoded data, and the video server 2313 may play the second decoded data to generate an image display corresponding to the video data in the target program The control signal and the data packaging operation of the image display control signal based on the Ethernet protocol are then output to the image output port 234 via the Ethernet physical layer transceiver 233, and then displayed on the LED display 20 connected to the image output port 234 ( See Figure 1) on. When the target program contains audio data, the video server 2313 will synchronously generate an audio signal such as an I2S format audio signal and output it to the audio output interface 235 when playing the second decoded data.

In view of the above, the master terminal 21 and multiple slave terminals 23 in this embodiment are wired or wirelessly combined with network equipment (such as routers) to construct a local area network. When each slave terminal 23 connected to the master terminal 21 uniformly receives the master terminal The programs in the streaming media format pushed by the streaming server 2113 of the terminal 21 can be displayed simultaneously on the LED display screens 20 connected to the respective slave terminals 23, and the programs can also be watched in advance on the main terminal 21. Target show. In this embodiment, the main terminal 21, for example, the asynchronous control system of the LED display screen, realizes the synchronous display of the program on the large-scale LED display screen 20 by synchronously pushing the program in a streaming media format.

[Third embodiment]

As shown in FIG. 4A, the main terminal 31 in a multi-terminal program playing system provided by the third embodiment of the present application includes: an embedded processor 311, a programmable logic device 3112, an Ethernet physical layer transceiver 313, an image The output port 314, the audio output interface 315, the video interface 316, the network communication module 317, the volatile memory 319a, the nonvolatile memory 319b, and the volatile memory 319c.

Among them, the embedded processor 311 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 4A, the embedded processor 311 has a built-in video server 3111 and a streaming media server 3113. The programmable logic device 312 is connected to the embedded processor 311, for example, the video server 3111 connected to the embedded processor 311, which may be an FPGA device. The Ethernet physical layer transceiver 313 is connected between the programmable logic device 312 and the image output port 314, and the image output port 314 is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 315 is connected to the embedded processor 311, such as a video server 3111 connected to the embedded processor 311, which is, for example, an RCA interface or a TRS interface. The video interface 316 is connected to the embedded processor 311, for example, the video server 3111 connected to the embedded processor 311, which is, for example, a digital video interface such as HDMI, or even an analog video interface. The network communication module 317 is connected to the embedded processor 311, for example, the streaming media server 3113 connected to the embedded processor 311, which includes, for example, a wired network module, a WiFi module, a mobile network module such as a 3G/4G module, and/or a LoRa module. The volatile memory 319a and the nonvolatile memory 319b are respectively connected to the embedded processor 311, where the volatile memory 319a is, for example, DDR3, and the nonvolatile memory 319b is, for example, flash memory. The volatile memory 319c is connected to the programmable logic device 312, which is, for example, DDR2.

For the main terminal 31 shown in FIG. 4A, since the embedded processor 311 has a built-in video server 3111 and a streaming media server 3113, the video server 3111 can read the target program stored in the non-volatile memory 319b and decode the target program Obtain the first decoded data and play the first decoded data to generate an image display control signal corresponding to the video data in the target program. After the image display control signal is input to the programmable logic device 312, the The programming logic device 312 performs data packaging operations based on the Ethernet protocol, and then outputs to the image output port 314 via the Ethernet physical layer transceiver 313, and then displays it on the LED display connected to the image output port 314. When the target program contains audio data, the video server 3111 will synchronously generate an audio signal such as an I2S format audio signal and output it to the audio output interface 315 when playing the first decoded data. On the other hand, the image display control signal generated when the video server 3111 plays the first decoded data can also be output to the video interface 316 to watch the target program in advance on the display 30 (refer to FIG. 1). Furthermore, the streaming media server 3113 may perform streaming media encoding on the first decoded data to obtain streaming media data, and send the streaming media data through the network communication module 317. In addition, the network communication module 317 can also be connected to the program distribution terminal 40 (refer to FIG. 1) in a wired or wireless manner to receive the user program released by the program distribution terminal 40 and send it to the embedded processor 311 for local storage, for example, to non- Volatile memory 319b. It is worth noting here that in an embodiment, when the main terminal 31 does not need to be connected to the LED display, the programmable logic device 312, the Ethernet physical layer transceiver 313, the image output port 314, and the volatile Storage 319c. Even in a certain embodiment, the audio output interface 315 may be further omitted.

4B, the slave terminal 33 of this embodiment includes: an embedded processor 331, a programmable logic device 332, an Ethernet physical layer transceiver 333, an image output port 334, an audio output interface 335, a video interface 336, and a network communication module 337. Volatile memory 339a, nonvolatile memory 339b, and volatile memory 339c.

Among them, the embedded processor 331 is, for example, an ARM processor, which can support the installation of an embedded operating system such as an Android system. In FIG. 4B, the embedded processor 331 has a streaming media client 3311 and a video server 3313 built in. The programmable logic device 332 is connected to the embedded processor 331, for example, the video server 3313 connected to the embedded processor 331, which may be an FPGA device. The Ethernet physical layer transceiver 333 is connected between the programmable logic device 332 and the image output port 334, and the image output port 334 is, for example, an Ethernet interface, such as an RJ45 connector. The audio output interface 335 is connected to the embedded processor 331, such as a video server 3313 connected to the embedded processor 331, which is, for example, an RCA interface or a TRS interface. The video interface 336 is connected to the embedded processor 331, such as a video server 3313 connected to the embedded processor 331, which may be a digital video interface such as an HDMI interface. The network communication module 337 is connected to the embedded processor 331, such as a streaming media client 3311 connected to the embedded processor 331. The volatile memory 339a and the nonvolatile memory 339b are respectively connected to the embedded processor 331, where the volatile memory 339a is, for example, DDR3, and the nonvolatile memory 339b is, for example, flash memory. The volatile memory 339c is connected to the programmable logic device 332, which is, for example, DDR2.

For the slave terminal 33 shown in FIG. 4B, since the embedded processor 331 has built-in streaming media client 3311 and video server 3313, the streaming media client 3311 can receive the stream sent by the master terminal 31 via the network communication module 317 through the network communication module 337. Media data, and perform streaming media decoding on the received streaming media data to obtain second decoded data. The video server 3313 may play the second decoded data to generate an image display corresponding to the video data in the target program A control signal. After the image display control signal is input to the programmable logic device 332, the programmable logic device 332 performs data packaging operations based on the Ethernet protocol, and then outputs to the image output port 334 through the Ethernet physical layer transceiver 333, It is further displayed on the LED display 20 (refer to FIG. 1) connected to the image output port 334. When the target program contains audio data, the video server 3313 will synchronously generate an audio signal such as an I2S format audio signal and output it to the audio output interface 335 when playing the second decoded data.

In view of the above, the master terminal 31 and multiple slave terminals 33 in this embodiment are wired or wirelessly combined with network equipment (such as routers) to construct a local area network. When each slave terminal 33 connected to the master terminal 31 simultaneously receives the master The programs in the streaming media format pushed by the streaming server 3113 of the terminal 31 can be simultaneously displayed on the LED display screens 20 (refer to FIG. 1) connected to each slave terminal 33, and can also be displayed on the main terminal 31. The target program can be watched in advance. In this embodiment, the main terminal 31, such as the LED display asynchronous control system, implements the synchronous display of the programs on the large-scale LED display 20 by synchronously pushing programs in a streaming media format.

[Fourth embodiment]

Referring to FIG. 5, a multi-terminal program playing system 10 proposed in the fourth embodiment of the present application is based on the aforementioned first embodiment with a streaming media relay server 12 added, so that the main terminal 11 sends out streaming media The data is not directly pushed to each slave terminal 13, but first sent to the streaming media transfer server 12 in push streaming mode, and then transferred by the streaming media transfer server 12 and then pushed to each slave terminal 13; the streaming media transfer server 12 is for example There are mature streaming media servers. In this embodiment, due to the setting of the streaming media relay server 12, it can greatly increase the number of slave terminals 13 carried by the master terminal 11, so as to overcome the problem of the asynchronous control system of the LED display screen as the master terminal 11 in some large loads. The problem of insufficient load capacity in the application.

Furthermore, it can be understood that the foregoing embodiments are only exemplary descriptions of the present application. The technical solutions of the various embodiments can be combined arbitrarily, provided that the technical features are not conflicting, the structure is not contradictory, and the purpose of the invention is not violated. For use with. In addition, it is worth mentioning that on the basis of the foregoing embodiments, the functions of the Ethernet physical layer transceiver and the programmable logic device can be integrated into the embedded processor.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and/or method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units/modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or modules may be Combined or can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit/module described as a separate component may or may not be physically separated, and the component displayed as a unit/module may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple channels. On the network unit. Some or all of the units/modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, each functional unit/module in each embodiment of the present application may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one. Unit/module. The above-mentioned integrated unit/module can be realized in the form of hardware, or in the form of hardware plus software functional unit/module.

The above-mentioned integrated unit/module implemented in the form of a software functional unit/module may be stored in a computer readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes several instructions to make one or more processors of a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in the various embodiments of this application Part of the steps. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc., which can store program codes Medium.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A multi-terminal program playing method applied to a system including a master terminal and multiple slave terminals; characterized in that, the multi-terminal program playing method includes:

The main terminal decodes the target program to obtain first decoded data, where the first decoded data includes video data;

The main terminal plays the first decoded data and performs streaming media encoding on the first decoded data to obtain streaming media data;

Sending the streaming media data by the master terminal;

The multiple slave terminals respectively receive the streaming media data; and

The plurality of slave terminals respectively perform streaming media decoding on the streaming media data respectively received to obtain second decoded data, and play the second decoded data.
The multi-terminal program playing method according to claim 1, wherein the main terminal sending the streaming media data comprises: sending the streaming media data to a streaming media transfer server in a push streaming mode; and the multiple Receiving the streaming media data from the terminal respectively includes: receiving the streaming media data from the streaming media relay server respectively.
The multi-terminal program playing method according to claim 1, wherein the multiple slave terminals respectively receiving the streaming media data comprise: receiving the streaming media data in a wireless spread spectrum communication manner respectively.
The multi-terminal program playing method according to claim 1, wherein before the main terminal decodes the target program to obtain the first decoded data, the method further comprises:

The main terminal receives externally input programs and locally stores the received programs; and

The main terminal reads the target program from programs stored locally.
The multi-terminal program playing method according to claim 1, wherein the main terminal comprises a first embedded processor and a first LoRa module and a video interface respectively connected to the first embedded processor, and The first embedded processor has a built-in first video server and a streaming media server. The first video server decodes the target program to obtain the first decoded data and plays the first decoded data. The streaming media server performs streaming media encoding on the first decoded data to obtain the streaming media data, and sends the streaming media data through the first LoRa module;

Each slave terminal includes: a second embedded processor, a second LoRa module and an image output port respectively connected to the second embedded processor, and the image output port is an Ethernet interface, and the second The embedded processor has a built-in streaming media client and a second video server. The streaming media client receives the streaming media data through the second LoRa module and performs streaming media decoding on the received streaming media data. For the second decoded data, the second video server plays the second decoded data.
A multi-terminal program playing system, characterized in that it comprises:

The main terminal is used to decode the locally stored target program to obtain first decoded data, play the first decoded data and perform streaming media encoding on the first decoded data to obtain streaming media data, and send the Streaming media data, wherein the first decoded data includes video data; and

A plurality of slave terminals are respectively used for receiving the streaming media data, and respectively used for performing streaming media decoding on the respective received streaming media data to obtain second decoded data, and playing the second decoded data.
The multi-terminal program broadcasting system of claim 6, further comprising:

A streaming media relay server connected to the master terminal and located in the same local area network as the multiple slave terminals;

Wherein, the main terminal is used to send the streaming media data to the streaming media transfer server in a push streaming mode;

Wherein, the multiple slave terminals are used to respectively receive the streaming media data from the streaming media relay server.
The multi-terminal program playing system according to claim 6, wherein the main terminal comprises:

Embedded processor, built-in video server and streaming media server;

A network access module, connected to the embedded processor, for receiving externally input programs and providing them to the embedded processor for local storage; and

Video interface, connected to the video server of the embedded processor;

Wherein, the video server is used to decode the locally stored target program to obtain the first decoded data, and used to play the first decoded data to generate an image display control signal corresponding to the video data ；

Wherein, the streaming media server is configured to perform streaming media encoding on the first decoded data to obtain the streaming media data, and to send the streaming media data.
The multi-terminal program playing system according to claim 8, wherein the main terminal further comprises:

A programmable logic device connected to the video server of the embedded processor;

Image output port;

Ethernet physical layer transceiver connected between the programmable logic device and the image output port; and

The audio output interface is connected to the video server of the embedded processor.
The multi-terminal program playing system according to claim 9, wherein the main terminal further comprises:

The wireless spread spectrum communication module is connected to the streaming media server of the embedded processor.
The multi-terminal program playing system according to claim 10, wherein each of the slave terminals comprises:

The second embedded processor has a built-in streaming media client and a second video server;

A second wireless spread spectrum communication module connected to the streaming media client of the second embedded processor; and

The second image output port is connected to the second video server of the second embedded processor;

Wherein, the streaming media client is configured to receive the streaming media data through the second wireless spread spectrum communication module, and perform streaming media decoding on the received streaming media data to obtain the second decoded data;

Wherein, the second video server is used to play the second decoded data to generate an image display control signal corresponding to the video data.
The multi-terminal program playing system of claim 11, wherein each of the slave terminals further comprises: a second programmable logic device and an Ethernet physical layer transceiver; wherein, the second image output port sequentially The second video server of the second embedded processor is connected through the Ethernet physical layer transceiver and the second programmable logic device.
The multi-terminal program playing system of claim 12, wherein each of the slave terminals further comprises: an audio output interface connected to the second video server of the second embedded processor.
The multi-terminal program playing system of claim 12, wherein each of the slave terminals further comprises: a video interface connected to the second video server of the second embedded processor.
The multi-terminal program playing system according to claim 11, wherein the second wireless spread spectrum communication module is a LoRa module.