LED cinema screen system

Abstract

An embodiment of the utility model provides an LED cinema screen system which comprises a media playing server, an LED video sending card, an LED video receiving card and a monitoring module used for monitoring movie playing states, a signal input end of the LED video sending card is electrically connected with the media playing server, a signal output end of the LED video sending card is electrically connected with the LED video receiving card, and a signal output end of the LED video receiving card is electrically connected with the media playing server. The monitoring module is electrically connected with the media playing server, the LED video sending card and the LED video receiving card, and the control module is electrically connected with the monitoring module. The LED video sending card comprises an LED video sending main card and a standby LED video sending card which are arranged in parallel. Through the scheme, when a film playing error occurs, the standby playing channel can be immediately switched to play the film, so that the film playing interruption is avoided, and the audience experience is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of digital movie projection equipment, in particular to an LED cinema screen system. Background Art

[0002] Using LED large screen as movie projection equipment has become a technological trend. LED large screen is composed of LED cabinet array, and LED video sending card transmits video and controls the playback of the whole screen; each LED cabinet is composed of LED light board module array and LED video receiving card, and the image display on the cabinet is controlled by the video receiving card in the cabinet to control the playback of the film content in this part. When the film is playing, the working status of the media playback server, LED video sending card and LED video receiving card can be monitored to determine whether the film is playing normally (usually, playback errors are basically generated in these three devices or in the communication process of these three devices). If there is a playback error, the playback of the film needs to be interrupted in time.

[0003] In the process of implementing the present utility model, the inventors found that there are at least the following problems in the prior art:

[0004] When there is a malfunction in the film playback, since the existing LED cinema screen system only has one playback path, the audience cannot continue watching after the film is interrupted, which greatly reduces the user experience. Therefore, how to prevent users from continuing to watch the film when there is a malfunction in the film playback is a problem that needs to be solved. Utility Model Content

[0005] The embodiment of the utility model provides an LED cinema screen system, which is used to solve the problem that the user cannot continue to watch the movie when a playback error is detected on the existing LED cinema screen.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides an LED cinema screen system, including a media playback server, an LED video sending card, an LED video receiving card, and a monitoring module for monitoring the movie playback status, wherein the signal input end of the LED video sending card is electrically connected to the media playback server, the signal output end of the LED video sending card is electrically connected to the LED video receiving card, and the monitoring module is electrically connected to the media playback server, the LED video sending card, and the LED video receiving card respectively: the LED cinema screen system also includes a control module, which is electrically connected to the monitoring module; the LED video sending card includes a LED video sending main card and a spare LED video sending card arranged in parallel.

[0007] Furthermore, the monitoring module also includes a synchronization submodule, and the synchronization submodule is used to obtain the current playback progress of the media playback server.

[0008] Furthermore, the LED cinema screen system also includes a tamper switch, which is arranged on the LED box and is electrically connected to the media playback server.

[0009] Furthermore, the LED video receiving card includes a LED video receiving main card and a standby LED video receiving card which are arranged in parallel.

[0010] Furthermore, the LED video receiving main card includes a first main receiving unit and a first slave receiving unit, and the standby LED video receiving card includes a second main receiving unit and a second slave receiving unit.

[0011] Furthermore, the LED cinema screen system also includes a security certificate management module, and the security certificate management module is electrically connected to the control module.

[0012] Furthermore, the media playback server includes a media playback main server and a backup media playback server arranged in parallel; the media playback main server is electrically connected to the LED video sending main card, and the backup media playback server is electrically connected to the backup LED video sending card.

[0013] The above technical solution has the following beneficial effects:

[0014] In this technical solution, by adding a dedicated LED video sending card and a standby LED video receiving card to the LED cinema screen, two playback paths are formed, thereby improving the stability of the LED cinema screen playback. When one playback path fails, the control system can switch the output signal of the media playback server to the standby LED video sending card, and use another playback path to complete the film playback, avoiding the impact of playback interruption on users and improving customer satisfaction.

[0015] In addition, this technical solution also has the following characteristics:

[0016] 1. In addition to the LED video sending card, in this technical solution, the LED video receiving card and the media playback server can also be set as two groups respectively, so that when the LED video receiving card or the media playback server fails, a rapid master-slave switch can be performed to ensure the continuous broadcast of the film.

[0017] 2. In this application, the media playback server can be set to one or two. When one media playback server is used, the security certificate can be transferred from the media playback server to an additionally configured security certificate management module. Only one set of security certificates is required to match one media playback server with two LED video sending cards, thereby greatly reducing equipment costs and projection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of an embodiment of an LED cinema screen system of the utility model;

[0020] Figure 2 It is a schematic diagram of another embodiment of an LED cinema screen system of the utility model;

[0021] Figure 3 It is a schematic diagram of another embodiment of the LED cinema screen system of the utility model;

[0022] Figure numbers: 11, media playback server; 111, media playback main server; 112, backup media playback server; 12, expansion board; 13, LED video sending main card; 14, backup LED video sending card; 15, control module; 16, monitoring module; 17, security certificate management module; 18, network port board; 20, LED box; 21, LED video receiving main card; 211, first main receiving unit; 212, first slave receiving unit; 22, backup LED video receiving card; 221, second main receiving unit; 222, second slave receiving unit; 23, tamper switch; 24, LED module. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1As shown, an embodiment of the utility model provides an LED cinema screen system, including a media playback server 11, an LED video sending card, an LED video receiving card, and a monitoring module 16 for monitoring the playback status of a film, wherein the signal input end of the LED video sending card is electrically connected to the media playback server 11, the signal output end of the LED video sending card is electrically connected to the LED video receiving card, and the monitoring module 16 is electrically connected to the media playback server 11, the LED video sending card, and the LED video receiving card, respectively: the LED cinema screen system also includes a control module 15, which is electrically connected to the monitoring module 16; the LED video sending card includes a LED video sending main card 13 and a spare LED video sending card 14 arranged in parallel.

[0025] To solve the above-mentioned problems, in the technical solution, two playback paths are formed by adding an LED video sending card to the LED cinema screen, thereby improving the stability of the LED cinema screen playback. The LED video sending main card 13 and the spare LED video sending card 14 are arranged in parallel, and at the same time, only one of the two can be used to receive the output signal of the media playback server 11. When the monitoring module 16 detects an error message, the status information is fed back to the control module 15, and the control module 15 will make a judgment based on the preset error code and the corresponding processing scheme. If it is determined that there is a problem with the LED video sending main card 13 (most of the problems occur on the LED video sending card), the control module 15 issues an instruction to switch the output signal of the media playback server 11 to the spare LED video sending card 14, and stop the LED video sending main card 13, so as to complete the movie playback through the playback path where the spare LED video sending card 14 is located, avoiding the impact of playback interruption on users and improving customer satisfaction.

[0026] The function of the monitoring module 16 is to monitor the working status between the media player server 11, the LED video sending card, and the LED box 20 (including the LED video receiving card and the LED module 24, etc.), including: monitoring the communication status between the media player server 11 and the LED video sending card; monitoring the communication status between the LED video sending card and the LED box 20, such as the network connection status and the video data transmission bit error rate. When the actual values ​​of these monitoring items exceed the preset thresholds, it is considered that an error has occurred, and the monitoring module 16 immediately feeds back the status information to the control module 15.

[0027] Furthermore, the monitoring module 16 also includes a synchronization submodule, and the synchronization submodule is used to obtain the current playback progress of the media playback server 11.

[0028] In addition to real-time monitoring of the playback status and determining whether there are playback problems, the monitoring module 16 can also read the video playback progress from the media playback server 11 at any time and feed back the playback progress to the control module 15. When the LED video sending main card 13 switches to the standby LED video sending card 14, in order not to affect the user's viewing, the control module 15 can continue to play the read video playback progress to the standby LED video sending card 14 to achieve seamless switching.

[0029] Furthermore, the LED cinema screen system also includes a tamper switch 23 , which is disposed on the LED box 10 , and is electrically connected to the media playback server 11 .

[0030] The tamper switch 23 is a micro-touch switch. In the prior art, it is necessary to install it on the LED box 20 and connect the tamper switch 23 to the LED video sending card so that the LED video sending card can detect whether the tamper switch 23 is triggered. If it is triggered, it means that the LED box 20 is turned on. In order to avoid piracy accidents caused by artificially opening the LED box 20, the LED video sending card should immediately stop outputting signals to the LED video receiving card.

[0031] In this application, since there are two LED video sending cards, in order to avoid the inability to correctly stop signal transmission when the tamper switch 23 is triggered, the tamper switch 23 is connected to the media playback server 11 upstream of the LED video sending card. At this time, no matter which LED video sending card is working, as long as the tamper switch 23 is triggered, the media playback server 11 can receive the action signal, thereby quickly stopping signal transmission.

[0032] Furthermore, the LED video receiving card includes a LED video receiving main card 21 and a standby LED video receiving card 22 which are arranged in parallel.

[0033] For the video receiving card in the LED box 20, there are two solutions:

[0034] The first one, such as Figure 1 As shown, only one LED video receiving main card 21 is provided, and the output signals of both the LED video sending main card 13 and the standby LED video sending card 14 can be received by the LED video receiving main card 21, and the received signals are further transmitted to the downstream LED module 24, thereby completing the video playback;

[0035] The second type, such as Figure 2 As shown, in order to prevent the film from being unable to be played normally when the LED video receiving card fails (a problem with the LED video receiving card will also cause a film playback failure, but the probability of its occurrence is lower than the probability of a problem with the LED video sending card), two parallel LED video receiving cards are also arranged in the LED box 20, namely, the LED video receiving main card 21 and the spare LED video receiving card 22. During normal operation, the LED video receiving main card 21 is preferentially used to receive signals (regardless of whether the signal comes from the LED video sending main card 13 or from the spare LED video sending card 14). When a failure of the LED video receiving main card 21 is detected, the control module 15 issues an instruction to use the spare LED video receiving card 22 to replace the LED video receiving main card 21.

[0036] Furthermore, the LED video receiving main card 21 includes a first main receiving unit 211 and a first slave receiving unit 212 , and the standby LED video receiving card 22 includes a second main receiving unit 221 and a second slave receiving unit 222 .

[0037] Traditional LED video receiving cards only have a single video receiving unit. In this application, a video receiving unit is added to each LED video receiving card to achieve dual-channel input. The LED video receiving unit automatically identifies the data source, such as Figure 1 In the illustrated embodiment, a first master receiving unit 211 and a first slave receiving unit 212 are respectively provided in the LED video receiving main card 21, the first master receiving unit 211 is used to receive the output signal of the LED video sending main card 13, and the first slave receiving unit 212 is used to receive the output signal of the standby LED video sending card 14; Figure 2 In the illustrated embodiment, the LED video receiving main card 21 includes a first main receiving unit 211 and a first slave receiving unit 212, and the standby LED video receiving card 22 includes a second main receiving unit 221 and a second slave receiving unit 222; the main receiving unit (including the first main receiving unit 211 and the second main receiving unit 221) is used to receive the output signal of the LED video sending main card 13, and the slave receiving unit (including the first slave receiving unit 212 and the second slave receiving unit 222) is used to receive the output signal of the standby LED video sending card 14.

[0038] Furthermore, the LED cinema screen system also includes a security certificate management module 17 , and the security certificate management module 17 is electrically connected to the control module 15 .

[0039] In the prior art, according to the DCI security requirements, a digital certificate is stored in the media playback server 11, and each media playback server 11 can only have one digital certificate. The media playback server 11 matches the LED video sending card one by one, and completes the monitoring and management function of the tamper switch 23, and completes the digital certificate identification, matching and update function. Before playing, the media playback server 11 needs to use the digital certificate to perform a handshake authentication with the LED video sending card, and the communication between the two can be realized only after the authentication is passed. Specifically for this technical solution, at the beginning of the screening work, the LED video sending main card 13 needs to be authenticated. When it is necessary to switch to the spare LED video sending card 14 due to a fault during the playback process, the spare LED video sending card 14 also needs to be authenticated.

[0040] The media playing server 11 in the present application may be configured in two forms, namely, configuring only one media playing server 11 or configuring two media playing servers 11 .

[0041] When only one media playback server 11 is configured, since the number of media playback servers 11 and LED video sending cards is different, if the existing method is adopted to place the digital certificate in the media playback server 11, when switching to the spare LED video sending card 14, the media playback server 11 needs to suspend the current playback work first and give priority to the handshake authentication work with the spare LED video sending card 14, so that the playback will be paused, which may affect the user's viewing experience; for this reason, if only one media playback server 11 is configured, an additional security certificate management module 17 can be set in the LED cinema screen system to store digital certificates, and the handshake authentication work with the two LED video sending cards is completed through the security certificate management module 17. In this way, the security communication work responsible for the security certificate management module 17 is independent of the video playback path, so that the media playback server 11 focuses on the conversion and sending of video data, which can effectively avoid the playback pause when switching to the spare LED video sending card 14.

[0042] When two media playing servers 11 (i.e., the main media playing server 111 and the standby media playing server 112) are configured, Figure 3 As shown, there is no need for the security certificate management module 17, and each media playback server 11 only needs to perform handshake authentication with the corresponding LED video receiving card as in the prior art. At this time, the main media playback server 111 is directly connected to the main LED video sending card 13, and the backup media playback server 112 is directly connected to the backup LED video sending card 14.

[0043] The difference between configuring one media player server 11 and configuring two media player servers 11 is:

[0044] If two media playback servers 11 are used, there is no need to set up the security certificate management module 17, and the system structure is simpler. However, at this time, due to the DCI security requirements of movie screenings, two sets of security certificates must be set up to respectively realize the handshake authentication needs of the two media playback servers 11 and the corresponding LED video sending cards, thereby increasing the screening cost; if only one media playback server 11 is configured to match it with two LED video sending cards (including the LED video sending main card 13 and the backup LED video sending card 14), only one set of security certificates is configured, thereby reducing the screening cost (but as mentioned above, at this time, in order to avoid screening pauses, a security certificate management module 17 needs to be configured).

[0045] In addition, in order to facilitate wiring, in this application, an expansion board 12 is added between the media playback server and the LED video sending unit, and the monitoring module 16 and the control module 15 are also connected to the expansion board 12; a network port board 18 is also set between the LED video sending unit and the LED video receiving unit.

[0046] In a specific embodiment, each module is electrically connected, and there are various signal transmissions between different modules, such as Figure 1 , Figure 2 , Figure 3 In the figure, various types of arrowed lines represent different signal transmissions: solid arrowed lines (excluding those inside the LED box 20) represent security certificate authentication signals, dotted arrowed lines represent control signals, double-dotted arrowed lines represent tamper switch monitoring signals, and double-line arrowed lines represent video data signals.

[0047] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than those clearly stated in each claim. On the contrary, as reflected in the attached claims, the utility model is in a state with less than all the features of the disclosed individual embodiments. Therefore, the attached claims are hereby expressly incorporated into the detailed description, with each claim acting alone as a separate preferred embodiment of the utility model.

[0048] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in the present application.

[0049] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An LED cinema screen system, comprising a media playback server, an LED video sending card, an LED video receiving card, and a monitoring module for monitoring the playback status of a film, wherein the signal input end of the LED video sending card is electrically connected to the media playback server, the signal output end of the LED video sending card is electrically connected to the LED video receiving card, and the monitoring module is electrically connected to the media playback server, the LED video sending card, and the LED video receiving card, respectively, characterized in that: It also includes a control module, which is electrically connected to the monitoring module; the LED video sending card includes a LED video sending main card and a spare LED video sending card which are arranged in parallel.

2. The LED cinema screen system according to claim 1, characterized in that: The monitoring module further includes a synchronization submodule, and the synchronization submodule is used to obtain the current playback progress of the media playback server.

3. The LED cinema screen system according to claim 1, characterized in that: It also includes a tamper switch, which is arranged on the LED box and is electrically connected to the media playback server.

4. The LED cinema screen system according to claim 1, characterized in that: The LED video receiving card comprises a main LED video receiving card and a standby LED video receiving card which are arranged in parallel.

5. The LED cinema screen system according to claim 4, characterized in that: The LED video receiving main card includes a first main receiving unit and a first slave receiving unit, and the standby LED video receiving card includes a second main receiving unit and a second slave receiving unit.

6. The LED cinema screen system according to claim 1, characterized in that: It also includes a security certificate management module, which is electrically connected to the control module.

7. The LED cinema screen system according to claim 1, characterized in that: The media playback server comprises a media playback main server and a backup media playback server which are arranged in parallel; the media playback main server is electrically connected to the LED video sending main card, and the backup media playback server is electrically connected to the backup LED video sending card.

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