Remote Card Reading System and Method for a Mobile Digital Film Projector

By introducing a dual-mode card reading unit and a theater card reading management system in the mobile digital film projector, remote card reading of the mobile digital film projector is realized, which solves the problems of long operation and maintenance time, high cost and low compatibility in the existing technology, and improves the efficiency and management convenience of ordering film sources.

CN114092079BActive Publication Date: 2025-07-25SHANGHAI MEDIA & ENTERTAINMENT TECH DEV CO LTD
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Patent Information

Application Number
CN202111393297.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-11-23
Publication Date
2025-07-25
Estimated Expiration
2041-11-23

AI Technical Summary

Technical Problem

The digital movie mobile projection system in the prior art cannot be recharged and managed remotely, has a long operation and maintenance time, high cost, low efficiency in ordering film sources, and the card reading system has low compatibility with mobile digital movie projectors.

Method used

The dual-mode card reading unit is built into the mobile digital movie projector, and remote or local communication is established with the theater card reader management system through the Internet to realize the remote card reading system of the mobile digital movie projector, including switching of the local card reading module and the network card reading module. Combined with the theater card reader management system and recharge system, remote management and recharge services of authorized cards are provided.

Benefits of technology

The closed loop of recharge-play-deductible-recharge is realized through the Internet, reducing operation and maintenance time and costs, improving theater work efficiency, enhancing the compatibility and management convenience of mobile digital movie projectors, and facilitating the projection team to order videos and screenings.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a remote card reading system for a mobile digital cinema projector, which includes a dual-mode card reading unit built in the mobile digital cinema projector. The dual-mode card reading unit establishes remote communication with a cinema line card reader management system via the Internet, enabling the mobile digital cinema projector to remotely read an authorization card and / or the cinema line card reader management system via the Internet. It also establishes network communication with a network card reading module via the Internet, which is used for a comprehensive service and management system and / or a cinema line card reader recharge system provided by a cinema company regarding authorization. A recharge task connection is established with the cinema line card reader management system, and an operation and maintenance system that manages and provides authorization card recharge services by the cinema company. The present invention also discloses a remote card reading method for a mobile digital cinema projector. The remote card reading system and method have low operation and maintenance costs, improve the work efficiency of the cinema line, and facilitate the ordering of films and projection.
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Description

Technical Field

[0001] The present invention relates to a projector, and more specifically, to a remote card reading system and method for a mobile digital cinema projector, which is mainly used for rural mobile film projection. Background Art

[0002] With the increasing improvement of people's living standards and the gradual advancement of the new rural construction, the material life of farmers has been significantly improved. While improving the material life of farmers, it is also necessary to enrich the spiritual and cultural life of the vast rural masses and actively promote the rural public welfare film projection work. As a major measure to enrich the spiritual and cultural life of the vast rural masses, this measure can not only project various high-definition digital movies for the vast rural masses, but also project science and technology films related to breeding, pest control, fruit e-commerce marketing, etc. for the vast rural masses, enabling the vast masses to achieve entertainment and learning at their doorstep.

[0003] The film industry has gone through more than a hundred years since its birth. From silent to sound, from black and white to color, from ordinary screens to wide screens, every technological change has brought a leap in the film presentation effect. The birth of digital cinema is an even more revolutionary change. When designing the rural mobile cinema standard, the country adopted the digital cinema method based on digital technology to establish a rural film projection public service system, effectively solving the problem of the shortage of film programs in rural and urban communities. This system is called the digital mobile cinema projection system (dMs). The operation of the digital mobile cinema projection system in the prior art requires the technical service support of the theater chain company, mainly involving equipment maintenance, film source copying, screening authorization, etc.; film source copying means that after the projection team orders a film, the theater chain company copies the corresponding film digital content to a mobile hard disk, and then sends the mobile hard disk to the projection team, and downloads it to the local hard disk of the projector through the USB interface of the digital cinema projector. The screening authorization mechanism is based on an authorization card, that is, the digital mobile cinema projection player device includes a card reader module. Each time a film is played, the authorization in the authorization card is read through the card reader module, and a screening is deducted for the corresponding film. When the number of authorized screenings for this film in the authorization card is 0, the authorization card needs to be taken to the corresponding theater chain company for screening recharge. After the recharge is completed, it is taken back to the projection team to form a closed loop of recharge - play - deduction - recharge again. Each time the card reading system in the prior art is used, it needs to be inserted into the projection device, and the recharge needs to be carried out at the local theater chain company. It is possible that the user is far away from the local theater chain company, and the reservation recharge and management are relatively troublesome. Remote card reading cannot be performed, and the authorization in the authorization card is read through a single scenario of local card reading. Using this single reading method, the operation and maintenance time is relatively long, the operation and maintenance cost is relatively high, and the compatibility of the card reading system with various mobile digital cinema projectors is relatively low, resulting in a relatively low efficiency of ordering film sources. Summary of the Invention

[0004] The object of the present invention is to provide a remote card reading system and method for a mobile digital cinema projector, which solves the technical problems in the existing card reading system that it cannot be remotely recharged and managed, the operation and maintenance time is relatively long, the operation and maintenance cost is relatively high, and the efficiency of ordering film sources is relatively low. It can remotely realize the closed loop of recharge - play - deduction - recharge through the network, improve the working efficiency of the cinema line, and facilitate the film projection team to order films and project.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] As an aspect of the present invention, there is provided a remote card reading system for a mobile digital cinema projector, including: a dual - mode card reading unit, built into the mobile digital cinema projector, establishing remote or local communication with the cinema line card reader management system through the Internet, and used for enabling the mobile digital cinema projector to remotely read or locally read the authorization card through the Internet; the cinema line card reader management system, establishing network communication with the dual - mode card reading unit through the Internet, and used for providing an integrated service and management system for authorization by the cinema line company; the cinema line card reader recharge system, establishing a recharge task connection with the cinema line card reader management system, and an operation and maintenance system managed by the cinema line company and providing authorization card recharge services.

[0007] As a remote card reading system for a mobile digital cinema projector in the above aspect of the present invention, the dual - mode card reading unit includes a local card reading module and a network card reading module. The mutual switching between the local card reading module and the network card reading module is completed by setting a switch flag in the mobile digital cinema projector. The dual - mode card reading unit realizes the dual - mode card reading mechanism of the mobile digital cinema projector through the operation of the authorization card.

[0008] As a remote card reading system for a mobile digital cinema projector in the above aspect of the present invention, the operations of the authorization card include: obtaining card reading information, used for respectively obtaining local card reading information and remote card reading information; and / or initializing the card reading device, used for respectively initializing the local card reading device and the remote card reading device; and / or canceling the card reading device, used for respectively canceling the local card reading device and the remote card reading device; and / or resetting the card reading device, used for respectively resetting the local card reading device and the remote card reading device; and / or interactively reading the card reading device, used for respectively interactively reading the local card reading device and the remote card reading device.

[0009] As a remote card reading system for a mobile digital cinema projector in the above aspect of the present invention, the mobile digital cinema projector further includes a central control main board, a power supply module, a video output module, an audio output module, a USB interface module, a liquid crystal display module, and a button input module; the central control main board is electrically connected to the local card reading module, the network card reading module, the power supply module, the video output module, the audio output module, the USB interface module, the liquid crystal display module, and the button input module respectively.

[0010] As a remote card reading system for a mobile digital cinema projector in the above aspect of the present invention, the theater card reader management system includes: a registration module for uniformly inputting the serial number of the registration terminal device, the serial number of the terminal authorization card, and the one machine one card one registration code into the theater card reader management system and activating for use; and / or a reading module for performing reading according to the network request instruction of the network card reading module through finding the corresponding authorization card operation in the theater card reader management system and feeding back to the remote mobile digital cinema projector; and / or a recharge module for recording the recharge requirements of users and notifying the operator to recharge the corresponding authorization card on the theater card reader recharge system by means of email, text message or WeChat; and / or a query module for synchronizing the authorized sessions in the authorization card and the database records, and users can query the names of the movies that have been recharged for their devices and the corresponding sessions through the web page; and / or a cancellation module for destroying the data information corresponding to the device in the theater card reader management system after the user cancels the remote card reading operation service.

[0011] As a remote card reading system for a mobile digital cinema projector in the above aspect of the present invention, the theater card reader recharge system includes:

[0012] An acquisition module for acquiring a task list of the movie names to be recharged and the corresponding sessions from the theater card reader management system; and / or an authorization module for authorizing the authorization card and recharging the authorization card; and / or an update module for synchronizing the corresponding recharge records of the authorization card to the theater card reader management system.

[0013] As another aspect of the present invention, a remote card reading method for a mobile digital cinema projector is provided, including the following steps:

[0014] S1. The theater card reading management system respectively establishes request connections with the dual-mode card reading unit and the theater card reader recharge system;

[0015] S2. The theater card reading management system responds to the card reading request and the recharge request, and also responds to the registration request, cancellation request, and query request of the operation and maintenance management personnel.

[0016] As a remote card reading method for a mobile digital movie projector in the above aspect of the present invention, S1 specifically includes the following steps:

[0017] S11. The dual-mode card reading unit sequentially sends a remote card reading request, establishes a socket, and requests to establish a connection with the theater card reading management system.

[0018] S12. The theater card reader recharge system sequentially sends a recharge request, prepares device and movie information, establishes a socket, and requests to establish a connection with the theater card reading management system through the projection staff.

[0019] S13. The theater card reading management system sequentially establishes a socket, binds a listening port, sets a listening queue, and establishes connections with the network card reading module and the theater card reader recharge system respectively.

[0020] As a remote card reading method for a rural mobile digital movie projector in the above aspect of the present invention, the steps for the theater card reading management system to respond to the card reading request and the recharge request in S2 include the following:

[0021] S21. Respond to the card reading request: The theater card reading management system sequentially receives the card reading information, feeds back the card reading result to the dual-mode card reading unit, and synchronously stores the card reading result in the local database.

[0022] S22. Respond to the recharge request: The theater card reading management system sequentially receives the recharge request, notifies the theater card reader recharge system to recharge, and synchronously updates the recharge result.

[0023] As a remote card reading method for a rural mobile digital movie projector in the above aspect of the present invention, the recharge process of the theater card reader recharge system in S22 includes the following steps:

[0024] S221. Obtain and view the recharge tasks in the recharge task list of the theater card reading management system, and notify the staff by email, text message or WeChat about the recharge tasks.

[0025] S222. The staff waits to insert the corresponding authorization card for recharge, and at the same time synchronizes the recharge information to the theater card reading management system.

[0026] Adopting the above technical solutions, the present invention has the following advantages:

[0027] The present invention provides a remote card-reading system and method for a mobile digital movie projector. By establishing a network connection through a dual-mode card-reading unit, a theater card-reading management system, and a theater card reader recharge system, and through the collaborative action of the three, a closed loop of recharge-play-deduction-recharge can be remotely achieved through the network, solving the technical problems of the existing card-reading system that cannot be remotely recharged and managed, has a relatively long operation and maintenance time, a relatively high operation and maintenance cost, and a low efficiency in ordering film sources. The operation and maintenance time is short and the operation and maintenance cost is low. By adopting a dual-mode card-reading mechanism, the mutual switching between the local card-reading module and the network card-reading module can be realized by setting a switch flag, and the local card-reading functions distributed in various places can be centralized through the network for reading operations through the network, which not only facilitates the management operation of the card but also brings convenience to the real-time nature of the business. It is convenient to use, has a relatively high compatibility with the mobile digital movie projector, improves the work efficiency of the theater, and facilitates the film team to order films and conduct screenings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings.

[0029] Figure 1 It is a schematic structural principle diagram of the remote card-reading system of the mobile digital movie projector of the present invention;

[0030] Figure 2 It is a block diagram of the mobile digital movie projector of the present invention;

[0031] Figure 3 It is an authorized card operation schematic diagram of the dual-mode card-reading unit of the present invention;

[0032] Figure 4 It is an architecture schematic diagram of the theater card reader management system of the present invention;

[0033] Figure 5 It is a flowchart of the remote card-reading system of the mobile digital movie projector of the present invention;

[0034] Figure 6 It is a recharge flowchart of the theater card reader recharge system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions of the present invention are specifically described below in conjunction with the drawings of the specification. The detailed features and advantages of the present invention are described in detail in the specific embodiments, and the content is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. According to the specification, claims, and drawings disclosed in this specification, those skilled in the art can easily understand the relevant purposes and advantages of the present invention.

[0036] Figure 1Shows the structural block diagram of the remote card reading system of the mobile digital cinema projector of the present invention; Figure 2 Shows the structural connection diagram of the mobile digital cinema projector of the present invention; Figure 3 Is the design diagram of the authorized card operation of the dual-mode card reading unit of the present invention; Figure 4 Shows the architecture diagram of the theater card reader management system of the present invention.

[0037] A remote card reading system for a mobile digital cinema projector is specifically as Figure 1 shown, including: a dual-mode card reading unit, built into the mobile digital cinema projector, and / or a theater card reader management system, establishing network communication with the dual-mode card reading unit through the Internet; and / or a theater card reader recharge system, establishing a recharge task connection with the theater card reader management system.

[0038] Among them, the dual-mode card reading unit realizes the network remote card reading logic through Internet interaction, supports the dual-mode card reading mechanism, and can switch the working mode between the local card reading and remote card reading modes. The theater card reader management system is a comprehensive management system for authorization. Users can add, delete, and associate devices through the system's web page or APP, view the movie authorization information of their associated devices, or submit a movie session recharge request. The projector can also remotely read cards or remotely obtain movie authorization through this system. The theater card reader recharge system, when receiving a user recharge request, checks whether the payment process is completed. After successful verification, it recharges the required movie sessions for the authorized card.

[0039] Among them, the dual-mode card reading unit includes a local card reading module and a network card reading module. The network card reading module mainly realizes two functions. First, it reads the recharged sessions of the authorized card associated with this machine and obtains the movie authorization to be played. Second, since the network card reading module is a network port on the playback device hardware, it maps the original local card reading logic to the network protocol through the network protocol. The implementation steps are as follows: When the user wants to read the movies and corresponding sessions recharged in the authorized card corresponding to the current projector, send the device-related information (the device serial number of this machine and the authorization file obtained during registration) to the theater card reader management system through the Internet. The theater card reader management system searches for the target authorized card in the authorized card array according to the submitted information, reads the internal authorization information, and then transmits it to the projector through the Internet. When the user needs to play a specified movie, send the device-related information and the unique serial number of the movie to the theater card reader management system through the Internet. The theater card reader management system checks whether the corresponding authorized card has the authorization for this movie according to the submitted information. If so, it returns the key information required for movie decryption through the Internet and deducts the session. If not, it returns an unauthorized prompt through the Internet.

[0040] The mutual switching between the local card reading module and the network card reading module is completed by setting a switch flag on the mobile digital movie projector. The dual-mode card reading unit realizes the dual-mode card reading mechanism of the mobile digital movie projector through the operation of an authorization card.

[0041] In addition, the mobile digital movie projector is specifically as Figure 2 shown, including a central control main board, a local card reading module, a network card reading module, a power supply module, a video output module, an audio output module, a USB interface module, a liquid crystal display module, and a key input module; the central control main board is electrically connected to the local card reading module, the network card reading module, the power supply module, the video output module, the audio output module, the USB interface module, the liquid crystal display module, and the key input module respectively. In the mode of the local card reading module, the conventional operation process is as follows: the projection team formulates a screening schedule according to requirements, orders the required screening sessions of the film source and recharges the authorization card at the theater company according to the screening schedule, then downloads the digital movie copy to the local hard disk of the projector through the USB port, inserts the recharged authorization card into the local card reader of the digital film, and the authorized sessions and the selected film source for playback can be viewed on the liquid crystal display screen. From Figure 1 it can be seen that the film source downloaded to the mobile digital movie projector can be pre-copied to the USB removable storage medium by express or network, and then downloaded to the local hard disk of the projector through the device USB port. However, if it is necessary to play the film source of an unordered session temporarily, the authorization card needs to be taken to the theater company for recharging the session, and then retrieved and inserted into the device to start playing. This process is relatively time-consuming and depends on the distance between the projection point and the theater company. If remote card reading is to be achieved, the authorization card can be entrusted to the remote theater company for maintenance, and the actual card reading is realized through Internet interaction to perform the card reading logic operation.

[0042] In the present invention, a network card reading module is newly added to the local card reading module in the prior art. The user can set whether to use the local card reading module or the network card reading module through a switch. If the network card reading module is selected, the authorization card is handed over to the remote theater company for maintenance. After configuring the local network, remote ordering of sessions, remote query, and remote reading of authorization for playback can be achieved through the network during actual application. The theater company deploys a card reader management system and a card reader recharge system behind the firewall. Once a recharge request is received, the recharge request of the recharge user can be completed in a short time.

[0043] Design diagram of the authorization card operation of the dual-mode card reading unit The design diagram of the authorization card operation of the dual-mode card reading unit is specifically as Figure 3As shown, it includes: obtaining card reading information for obtaining local card reading information and remote card reading information respectively; and / or initializing card reading devices for initializing local card reading devices and remote card reading devices respectively; and / or canceling card reading devices for canceling local card reading devices and remote card reading devices respectively; and / or resetting card reading devices for resetting local card reading devices and remote card reading devices respectively; and / or interactively reading card reading devices for interactively reading local card reading devices and remote card reading devices respectively. According to the switch flag of selecting the local card reading module or the network card reading module, these 5 authorized card operations are divided into two parts for implementation respectively. In a specific embodiment, the most frequently used operation is to interactively read the card reading device for interactively reading data. Its corresponding local operation remains the same as the original, realizing the original local card reading logic, while the corresponding remote operation is implemented through network communication, realizing the dual-mode card reading mechanism of the mobile digital movie projector.

[0044] In addition, the theater card reader management system is specifically as Figure 4 shown, including a registration module, originating from the authorization mechanism of the mobile digital movie projector, for uniformly entering the registration terminal device serial number, terminal authorization card serial number, and one machine one card one registration code into the theater card reader management system and activating their use. In this way, when a request from a remote digital movie projector is received through the network, first search for the device serial number. If it can be matched, then perform subsequent card reading operations; and / or a reading module for reading according to the network request instruction of the network card reading module by finding the corresponding authorized card operation in the theater card reader management system and feeding it back to the remote mobile digital movie projector; and / or a recharge module for recording the recharge requirements of users and notifying the operator to recharge the corresponding authorized card on the theater card reader recharge system by means of email, text message, or WeChat; and / or a query module for synchronizing the authorized sessions in the authorized card and the database records, and users can query the names of the movies that have been recharged on their devices and the corresponding sessions through the web page; and / or a cancellation module for destroying the data information corresponding to the device in the theater card reader management system after the user cancels the remote card reading operation service.

[0045] The theater card reader recharge system includes: an obtaining module for obtaining a task list of the movie names to be recharged and the corresponding sessions from the theater card reader management system; and / or an authorization module for authorizing the authorized card and recharging the authorized card; and / or an updating module for synchronizing the corresponding recharge records of the authorized card to the theater card reader management system. Obtain the task list of the movie names to be recharged and the corresponding sessions from the management system, order and authorize the card in the dedicated recharge system of the mobile digital movie projector. After the operation is completed, synchronize the corresponding recharge records to the theater card reader management system.

[0046] Figure 5Shows the flowchart of the remote card reading system of the mobile digital cinema projector of the present invention; Figure 6 Shows the recharge flowchart of the recharge system of the theater card reader of the present invention.

[0047] A remote card reading method for a mobile digital cinema projector is as Figure 5 shown, and specifically includes the following steps:

[0048] S1. The theater card reading management system respectively establishes request connections with the dual-mode card reading unit and the theater card reader recharge system;

[0049] Among them, S1 specifically includes the following steps:

[0050] S11. The dual-mode card reading unit sequentially sends a remote card reading request, establishes a socket, and requests to establish a connection with the theater card reading management system;

[0051] S12. The theater card reader recharge system sequentially sends a recharge request, prepares device and movie information, establishes a socket, and requests to establish a connection with the theater card reading management system through the projection staff;

[0052] S13. The theater card reading management system sequentially establishes a socket, binds a listening port, sets a listening queue, and establishes connections with the network card reading module and the theater card reader recharge system respectively.

[0053] S2. The theater card reading management system responds to the card reading request and the recharge request, and also responds to the registration request, cancellation request, and query request of the operation and maintenance management personnel.

[0054] The theater card reading management system in S2 responding to the card reading request and the recharge request includes the following steps:

[0055] S21. Respond to the card reading request: The theater card reading management system sequentially receives the card reading information, feeds back the card reading result to the dual-mode card reading unit, and synchronously stores the card reading result in the local database;

[0056] S22. Respond to the recharge request: The theater card reading management system sequentially receives the recharge request, notifies the theater card reader recharge system to recharge, and synchronously updates the recharge result.

[0057] Among them, the recharge process of the theater card reader recharge system in S22 is as Figure 6 shown, and specifically includes the following steps:

[0058] S221. Obtain and view the recharge tasks in the recharge task list of the theater card reading management system, and notify the staff by email, text message or WeChat;

[0059] S222. The staff waits to insert the corresponding authorization card for recharge, and at the same time synchronizes the recharge information to the theater card reading management system.

[0060] Finally, it should be noted that although the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Without departing from the concept of the present invention, various equivalent changes or substitutions can be made. Therefore, as long as the changes and modifications of the above embodiments are within the scope of the spirit of the present invention, they will fall within the scope of the claims of the present invention.

Claims

1. A remote card-reading system for a mobile digital cinema projector, characterized in that, Comprising: A dual-mode card reading unit, built into the mobile digital cinema projector, establishing remote or local communication with the theater card reader management system via the Internet, for enabling the mobile digital cinema projector to remotely read or locally read the authorization card via the Internet; A theater card reader management system, establishing network communication with the dual-mode card reading unit via the Internet, for providing an integrated service and management system regarding authorization by the theater company; A theater card reader recharge system, establishing a recharge task connection with the theater card reader management system, an operation and maintenance system managed by the theater company and providing authorization card recharge services, The dual-mode card reading unit includes a local card reading module and a network card reading module. The mutual switching between the local card reading module and the network card reading module is completed by setting a switch flag in the mobile digital cinema projector. The dual-mode card reading unit realizes the dual-mode card reading mechanism of the mobile digital cinema projector through the operation of the authorization card, The operation of the authorization card includes: Obtaining card reading information, for respectively obtaining local card reading information and remote card reading information; Initializing the card reading device, for respectively initializing the local card reading device and the remote card reading device; Deleting the card reading device, for respectively deleting the local card reading device and the remote card reading device; Resetting the card reading device, for respectively resetting the local card reading device and the remote card reading device; Interactively reading the card reading device, for respectively interactively reading the local card reading device and the remote card reading device, The theater card reader management system includes: A registration module, for uniformly entering the serial number of the registration terminal device, the serial number of the terminal authorization card, and the one machine one card one registration code into the theater card reader management system and activating for use; A reading module, for performing reading according to the network request instruction of the network card reading module by finding the corresponding authorization card operation in the theater card reader management system and feeding it back to the remote mobile digital cinema projector; A recharge module, for recording the recharge requirements of users and notifying the operator to recharge the corresponding authorization card on the theater card reader recharge system via email, text message, or WeChat; A query module, for synchronizing the authorized sessions in the authorization card and the database records, and users can query the names of the movies that have been recharged for their devices and the corresponding sessions through the web page; A deletion module, for destroying the data information corresponding to the device in the theater card reader management system after the user cancels the remote card reading operation service, The theater card reader recharge system includes: An obtaining module, for obtaining the task list of the movie names to be recharged and the corresponding sessions from the theater card reader management system; An authorization module, for authorizing the authorization card and recharging the authorization card; An updating module, for synchronizing the corresponding recharge records of the authorization card to the theater card reader management system.

2. The remote card reading system of a mobile digital cinema projector according to claim 1, characterized in that The mobile digital cinema projector further includes a central control main board, a power module, a video output module, an audio output module, a USB interface module, a liquid crystal display module, and a key input module; the central control main board is electrically connected to the local card reading module, the network card reading module, the power module, the video output module, the audio output module, the USB interface module, the liquid crystal display module, and the key input module respectively.

3. A remote card reading method for a mobile digital cinema projector, characterized in that, Including the following steps: S1. The theater card reading management system respectively establishes request connections with the dual-mode card reading unit and the theater card reader recharge system; S2. The theater card reading management system responds to the card reading request and the recharge request, and also responds to the registration request, cancellation request, and query request of the operation and maintenance management personnel. The specific steps of S1 are as follows: S11. The dual-mode card reading unit sequentially sends a remote card reading request, establishes a socket, and requests to establish a connection with the theater card reading management system; S12. The theater card reader recharge system sequentially sends a recharge request, prepares device and movie information, and establishes a socket through the projection staff to request to establish a connection with the theater card reading management system; S13. The theater card reading management system sequentially establishes a socket, binds a listening port, sets a listening queue, and establishes connections with the network card reading module and the theater card reader recharge system respectively. The steps of the theater card reading management system in S2 responding to the card reading request and the recharge request are as follows: S21. Respond to the card reading request: The theater card reading management system sequentially receives the card reading information, feeds back the card reading result to the dual-mode card reading unit, and synchronously stores the card reading result in the local database; S22. Respond to the recharge request: The theater card reading management system sequentially receives the recharge request, notifies the theater card reader recharge system to recharge, and synchronously updates the recharge result. The recharge process of the theater card reader recharge system in S22 is as follows: S221. Obtain and view the recharge tasks in the recharge task list of the theater card reading management system, and notify the staff by email, text message, or WeChat; S222. The staff waits to insert the corresponding authorization card for recharge, and at the same time synchronizes the recharge information to the theater card reading management system.

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