CN113055726A - Cinema projection equipment and cinema projection system - Google Patents
Cinema projection equipment and cinema projection system Download PDFInfo
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- CN113055726A CN113055726A CN201911367546.XA CN201911367546A CN113055726A CN 113055726 A CN113055726 A CN 113055726A CN 201911367546 A CN201911367546 A CN 201911367546A CN 113055726 A CN113055726 A CN 113055726A
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- 238000006243 chemical reaction Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41415—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The embodiment of the invention discloses a cinema showing device and a cinema showing system. The cinema projection apparatus includes: a chassis; the first circuit board is positioned in the case and is provided with a media input interface, a first controller, a first programmable logic device and a first connector, the media input interface is connected with the first controller, the first controller is connected with the first programmable logic device, and the first controller and the first programmable logic device are respectively connected with the first connector; and the second circuit board is positioned in the case and is provided with a second controller, a second programmable logic device, an Ethernet PHY chip, a display output interface and a second connector, the second controller and the second programmable logic device are respectively connected with the second connector, the Ethernet PHY chip is connected between the display output interface and the second programmable logic device, and the second connector is inserted into the first connector of the first circuit board. The embodiment of the invention can simplify the structure of the cinema projection system and improve the integration level of cinema projection equipment.
Description
Technical Field
The invention relates to the technical field of movies and televisions, in particular to cinema showing equipment and a cinema showing system.
Background
The movie theater adopts a projection server (or called Screen Management System, SMS) to play the movie. A cinema presentation system including a presentation server in a cinema is structured as shown in fig. 1, a presentation storage system for storing important materials such as a movie, and a presentation server (SMS) accesses the presentation storage system through, for example, a local area network to acquire a movie to be presented. After the required film is taken, the projection server performs operations such as caching, media streaming transmission, playing control and the like on the film and outputs the film to the projection equipment. The projection equipment acquires and decrypts the video to be played and projects the video to the screen. The integration level of the projection device and the projection server is not high, for example, the projection server transmits the video data to the projection device via a dedicated transmission cable for final projection onto a screen, and the whole system structure is complex.
Disclosure of Invention
Therefore, embodiments of the present invention provide a cinema projection apparatus and a cinema projection system, which simplify the structure of the cinema projection system and improve the integration of the cinema projection apparatus.
In one aspect, an embodiment of the present invention provides a cinema projection apparatus, including: a chassis; the first circuit board is positioned in the case and is provided with a media input interface, a first controller, a first programmable logic device and a first connector, the media input interface is connected with the first controller, the first controller is connected with the first programmable logic device, and the first controller and the first programmable logic device are respectively connected with the first connector; and a second circuit board, which is located in the case and is provided with a second controller, a second programmable logic device, an ethernet PHY chip, a display output interface, and a second connector, wherein the second controller and the second programmable logic device are respectively connected to the second connector, the ethernet PHY chip is connected between the display output interface and the second programmable logic device, and the second connector is plugged into the first connector of the first circuit board.
The technology adopts a specific structural design, so that the cinema projection equipment integrates the functions of the projection server and the projection equipment in the prior art, but the projection equipment and a connecting cable thereof are omitted, the structure of the whole cinema projection system is simplified, and the system integration level is improved.
In one embodiment of the invention, the first connector and the second connector are PCI bus connectors or SerDes bus connectors.
In an embodiment of the present invention, the ethernet PHY chip includes a usb multi-gigabit media independent interface protocol interface and a plurality of BASE-T protocol interfaces, and the usb multi-gigabit media independent interface protocol interface is electrically connected to the second programmable logic device; the display output interfaces are Ethernet interfaces and the number of the display output interfaces is multiple, and each display output interface is electrically connected with one BASE-T protocol interface of the Ethernet PHY chip.
In one embodiment of the invention, the USB multi-gigabit media independent interface protocol interface is a USXGMII interface, and the Ethernet PHY chip is a 5GBASE-T type Ethernet PHY chip based on the USXGMII protocol.
In an embodiment of the present invention, the number of the ethernet PHY chips is two, and the number of the BASE-T protocol interfaces of each ethernet PHY chip is four; the number of the display output interfaces is eight.
In an embodiment of the present invention, the cinema projection equipment further includes a third circuit board, the third circuit board is also located in the chassis, the ethernet PHY chip and the display output interface are located on the third circuit board, the third circuit board is further provided with a first serial SCSI interface, and the first serial SCSI interface is connected to the second programmable logic device; and a second serial SCSI interface is further arranged on the third circuit board, the second serial SCSI interface is connected with the Ethernet PHY chip, and the second serial SCSI interface is further connected with the first serial SCSI interface.
In one embodiment of the invention, the physical transmission bandwidth of the usb media independent interface protocol interface is 20 Gbps; the physical transmission bandwidth of the BASE-T protocol interface is 5 Gbps.
In another aspect, an embodiment of the present invention provides a cinema projection system, including the cinema projection apparatus as described above; the LED display screen is connected with the display output interface of the cinema projection equipment; and a show storage system connected with the media input interface of the cinema showing equipment.
In an embodiment of the present invention, the projection storage system is a PC or a cloud server.
In one embodiment of the invention, the presentation storage system is located in the same local area network as the presentation server, and the presentation storage system is connected to the presentation server through the local area network.
One of the above technical solutions has the following advantages or beneficial effects: the cinema projection equipment of the embodiment of the invention adopts a specific structural design, so that the cinema projection equipment integrates the functions of the projection server and the projection equipment in the prior art, but the projection equipment and the connecting cable thereof are omitted, the structure of the whole cinema projection system is simplified, and the system integration level is improved. In addition, the Ethernet PHY chip with the universal serial multi-gigabit media independent interface protocol interface and the plurality of BASE-T protocol interfaces is adopted, so that the loading capacity of the cinema projection equipment is greatly improved, the transmission rate is greatly improved, the cinema projection system is smoother, and the film viewing effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a cinema projection system in the prior art.
Fig. 2 is a schematic structural diagram of a cinema projection system according to an embodiment of the present invention.
Fig. 3 is a schematic view showing the configuration of the cinema projection apparatus of fig. 2.
Fig. 4 is a schematic structural diagram of the LED display screen in fig. 2.
Fig. 5 is a schematic structural diagram of the ethernet PHY chip in fig. 3.
Fig. 6 is another schematic diagram of the cinema projection apparatus of fig. 2.
Fig. 7 is a schematic view of another configuration of the cinema projection apparatus of fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2, one embodiment of the present invention provides a theater projection system 10. The cinema presentation system 10 includes, for example, a presentation storage system 100, a cinema presentation device 200, and an LED display screen 300. The cinema projection apparatus 200 is connected between the projection storage system 100 and the LED display screen 300.
The projection storage system 100 may be, for example, an upper computer or a cloud server, and is mainly used for storing media files such as movies and related data, and may even be used for user interface information interaction and the like. The media files may, for example, include MXF files, XML files, and the like. The presentation storage system 100 may be connected to the cinema presentation apparatus 200, for example, via a network. For example, the presentation storage system 100 is located in the same local area network as the theater projection device 200, and the presentation storage system 100 is connected to the theater projection device 200 via the local area network. In addition, the presentation storage system 100 may be multiple in number, and the theater presentation device 200 may acquire media files from different presentation storage systems 100.
The cinema projection device 200 integrates functions of a projection server and a projection device in the prior art, and is mainly responsible for film play control management, image processing of film media files, security management and the like. The cinema projection apparatus 200 includes, for example, a circuit board 210 and a circuit board 230, and the circuit board 210 is connected to the circuit board 230 through a connector.
Specifically, as shown in fig. 3, the circuit board 210 is provided with a media input interface 211, a controller 212, a programmable logic device 213, and a connector 214. The media input interface 211 is connected with the controller 212, the controller 212 is connected with the programmable logic device 213, and the controller 212 and the programmable logic device 213 are respectively connected with the connector 214. The media input interface 211 may be, for example, an ethernet interface such as an RJ45 port. Of course, the media input interface 211 may also be other interfaces, such as a video interface, e.g., an HDMI interface, a DVI interface, etc., for retrieving media files from the presentation storage system 100. The Programmable logic device 213 may be, for example, an FPGA (Field Programmable Gate Array), which is mainly responsible for media file parsing, synchronous frame framing, image data color gamut conversion, and the like. The controller 212 may be, for example, an MCU or an ARM, which is mainly responsible for program loading of programmable logic devices, external communication and command parsing, video playback management, event processing, detection and fault diagnosis, and the like. Connector 214 may be a connector for a PCI bus or a SerDes bus. The connectors 214 may be pin header connectors, female header connectors, or other connectors, for example. Specifically, under the control of the controller 212, the programmable logic device 213 is configured to: the method includes the steps of obtaining a media file through a media input interface 211, analyzing the media file to obtain an analyzed media file data stream, performing synchronous frame framing on the analyzed media data stream to obtain a video frame, performing color gamut conversion on the video frame to obtain color gamut converted image data, and transmitting the color gamut converted image data to a programmable logic device 233.
As described above, as shown in fig. 3, the circuit board 230 is provided with, for example, a controller 232, a programmable logic device 233, a display output interface 234, and a connector 231. The controller 232 and the programmable logic device 233 are connected to the connector 231, and the display output interface 234 is connected to the programmable logic device 233, wherein the connector 231 is plugged into the connector 214 of the circuit board 210. Connector 231 is also a connector of a PCI bus or a SerDes bus, for example. Connector 231 is a connector that mates with connector 214. The programmable logic device 233 may be, for example, an FPGA, which is primarily responsible for media file verification and decryption, image processing such as scaling, watermark embedding, image data packaging, and the like. The controller 232 may be, for example, an MCU or an ARM, which is primarily responsible for the loading of programmable logic device programs, security management, exception feedback, key management, time synchronization, and the like. Specifically, under the control of the controller 232, the programmable logic device 233 is configured to: the image data after color gamut conversion from the programmable logic device 213 is scaled to obtain scaled image data, and the scaled image data is packaged and output to the LED display screen 300 through the ethernet PHY chip 235 and the display output interface 234 in sequence for display. The display output interface 234 may be, for example, an ethernet interface such as an RJ45 port.
Referring to fig. 4, the LED display screen 300 includes, for example, at least one LED display module 330 and a display control card 310 carrying the at least one LED display module 330. The LED display module 330 includes at least one LED lamp panel. Typically, as shown in fig. 4, the display control card 310 includes, for example, an image data input interface 311, a programmable logic device 313, a microcontroller 315, a display data and control signal output interface 317, and an ethernet PHY chip 319. The ethernet PHY chip 319 is connected between the image data input interface 311 and the programmable logic device 313. The programmable logic device 313 is connected to the display data and control signal output interface 317 and the microcontroller 315. The programmable logic device 313 is, for example, a Field Programmable Gate Array (FPGA) device, and is mainly used for processing image data to generate display data and control signals. The microcontroller 315 is, for example, an MCU, and is mainly used for loading an FPGA program, and performing temperature and humidity detection, voltage detection, and the like by connecting a sensor. The display data and control signal output interface 317 is used for providing display data and control signals to the LED display module 330 to display a corresponding picture on the LED display module 330. Even more, display control card 310 may further include a nonvolatile memory (not shown) such as an EMMC, which is used to store data of display control card 310 to avoid data loss after display control card 310 is powered down. In addition, the display control card 130 further includes a volatile memory (not shown) such as DDR, which is used to provide a data buffer space.
As shown in fig. 2, the cinema playback device 10 may further include a cabinet 270. The case 270 may be, for example, a housing-like component and has an accommodating space therein. The circuit board 210 and the circuit board 230 may be disposed in the accommodating space of the chassis 270, for example. Therefore, the cinema projection equipment provided by the embodiment of the invention adopts a specific structural design, so that the cinema projection equipment integrates the functions of the projection server and the projection equipment in the prior art. Compared with the film projection system in the prior art, the projection device and the connecting cable thereof are omitted, and the structure of the whole cinema projection system is simplified. In addition, the cinema projection system provided by the embodiment of the invention adopts the LED display screen as the screen, the LED display screen has high brightness, the lamp does not need to be turned off when the film is played, the projected film cannot be shielded by a film viewer standing up and the like, and the film viewing experience of the film viewer is improved. In addition, the application scene of the cinema projection system is not limited to cinema film playing, and the cinema projection system can also be used in occasions such as conferences, singing and dancing performances and the like, so that the service range of a cinema can be greatly expanded.
In addition, in other embodiments of the invention, as shown in FIG. 5, Ethernet PHY chip 235 includes a USB multi-gigabit media independent interface protocol interface 2351 and a plurality of BASE-T protocol interfaces 2353. The universal serial multi-gigabit media independent interface protocol interface 235 is, for example, a USXGMII interface, which electrically connects the programmable logic device 233. The display output interface 234 is, for example, an ethernet interface, and the number of the display output interfaces 234 is plural. Each display output interface 234 is electrically coupled to a BASE-T protocol interface 2353 of Ethernet PHY chip 235. For example, the Ethernet PHY chip 235 may be an Ethernet PHY chip based on the USXGMII protocol, or may be a 5GBASE-T type Ethernet PHY chip based on the USXGMII protocol. The number of BASE-T protocol interfaces 2353 of each Ethernet PHY chip 235 is, for example, four. Further, as shown in fig. 6, the number of ethernet PHY chips 235 is two; the number of display output interfaces 234 is thus, for example, eight. So that the cinema projection apparatus 200 can carry more, larger LED displays.
Further, as shown in fig. 7, the cinema projection device 200 may further include a circuit board 250. Circuit board 250 is also disposed within chassis 270. The ethernet PHY chip 235 and the display output interface 234 are located on the circuit board 250. The circuit board 230 is further provided with a Serial Attached Small Computer System Interface (Serial Small Computer System Interface) 236, and the Serial SCSI Interface 236 is connected to the programmable logic device 233. The circuit board 250 is further provided with a serial SCSI interface 237, and the serial SCSI interface 237 is connected to the usb multi-gigabit media independent interface protocol interface 2351 of the ethernet PHY chip 235. The serial SCSI interface 237 also connects to the serial SCSI interface 236. Thus, when the LED display screen has more screens, the circuit board 250 may be replaced with a circuit board having more ethernet protocol interfaces to connect to the serial SCSI interface 236.
Further, the physical transmission bandwidth of the usb multi-gigabit media independent interface protocol interface 2351 is 20 Gbps; the BASE-T protocol interface 2353 has a physical transmission bandwidth of 5Gbps, so that programmable logic device 233 outputs to each Ethernet PHY chip 235 at a bandwidth of 20Gbps, and both Ethernet PHY chips 235 can transmit 40Gbps of data. The physical transmission bandwidth of the BASE-T protocol interface 2353 is 5Gbps, and compared with the existing 1Gbps Ethernet PHY chip, the transmission bandwidth greatly improves the transmission rate, so that the cinema showing system is smoother, and the film watching effect is improved.
In summary, the cinema projection apparatus according to the embodiment of the present invention adopts a specific structural design, so that the cinema projection apparatus integrates functions of the projection server and the projection apparatus in the prior art. Compared with the film projection system in the prior art, the projection device and the connecting cable thereof are omitted, and the structure of the whole cinema projection system is simplified. In addition, the cinema projection system provided by the embodiment of the invention adopts the LED display screen as the screen, the LED display screen has high brightness, the lamp does not need to be turned off when the film is played, the projected film cannot be shielded by a film viewer standing up and the like, and the film viewing experience of the film viewer is improved. In addition, the application scene of the cinema projection system is not limited to cinema film playing, and the cinema projection system can also be used in occasions such as conferences, singing and dancing performances and the like, so that the service range of a cinema can be greatly expanded. In addition, the Ethernet PHY chip with the universal serial multi-gigabit media independent interface protocol interface and the plurality of BASE-T protocol interfaces is adopted, so that the loading capacity of the cinema projection equipment is greatly improved, the transmission rate is greatly improved, the cinema projection system is smoother, and the film viewing effect is improved. In addition, the ethernet PHY chip and the display output interface are disposed on the circuit board 250, so that the user can correspondingly replace the circuit board 250 with a circuit board having more ethernet protocol interfaces to adapt to a scene with more screens and larger size of the LED display screen, and the application of the circuit board is more flexible.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cinema projection apparatus, comprising:
a chassis;
the first circuit board is positioned in the case and is provided with a media input interface, a first controller, a first programmable logic device and a first connector, the media input interface is connected with the first controller, the first controller is connected with the first programmable logic device, and the first controller and the first programmable logic device are respectively connected with the first connector; and
the second circuit board is positioned in the case and is provided with a second controller, a second programmable logic device, an Ethernet PHY chip, a display output interface and a second connector, the second controller and the second programmable logic device are respectively connected with the second connector, the Ethernet PHY chip is connected between the display output interface and the second programmable logic device, and the second connector is inserted into the first connector of the first circuit board.
2. A cinema projection apparatus as recited in claim 1, wherein the first and second connectors are PCI bus connectors or SerDes bus connectors.
3. A cinema presentation device as recited in claim 1, wherein the ethernet PHY chip includes a universal serial multi-gigabit media independent interface protocol interface and a plurality of BASE-T protocol interfaces, the universal serial multi-gigabit media independent interface protocol interface electrically connected to the second programmable logic device; the display output interfaces are Ethernet interfaces and the number of the display output interfaces is multiple, and each display output interface is electrically connected with one BASE-T protocol interface of the Ethernet PHY chip.
4. A cinema projection device as claimed in claim 3, wherein the universal serial multi-gigabit media independent interface protocol interface is a USXGMII interface and the ethernet PHY chip is a USXGMII protocol based 5GBASE-T type ethernet PHY chip.
5. A cinema projection apparatus as recited in claim 3, wherein the number of the ethernet PHY chips is two, and the number of the plurality of BASE-T protocol interfaces of each of the ethernet PHY chips is four; the number of the display output interfaces is eight.
6. A cinema projection device as recited in claim 3, further comprising a third circuit board, the third circuit board also being located within the cabinet, the ethernet PHY chip and the display output interface being located on the third circuit board, the third circuit board further having a first serial SCSI interface disposed thereon, the first serial SCSI interface being connected to the second programmable logic device; and a second serial SCSI interface is further arranged on the third circuit board, the second serial SCSI interface is connected with the Ethernet PHY chip, and the second serial SCSI interface is further connected with the first serial SCSI interface.
7. A cinema presentation apparatus as claimed in claim 3, wherein the physical transmission bandwidth of the universal serial multi-gigabit media independent interface protocol interface is 20 Gbps; the physical transmission bandwidth of the BASE-T protocol interface is 5 Gbps.
8. A theatre projection system, comprising:
the theater projection device of any one of claims 1-7;
the LED display screen is connected with the display output interface of the cinema projection equipment; and
and the showing storage system is connected with the media input interface of the cinema showing equipment.
9. A cinema presentation system as claimed in claim 8, wherein the presentation storage system is a PC or a cloud server.
10. A cinema presentation system as claimed in claim 8 or 9, wherein the presentation storage system is located in the same local area network as the cinema presentation apparatus, and the presentation storage system is connected to the cinema presentation apparatus via the local area network.
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| CN201911367546.XA CN113055726A (en) | 2019-12-26 | 2019-12-26 | Cinema projection equipment and cinema projection system |
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| CN201911367546.XA CN113055726A (en) | 2019-12-26 | 2019-12-26 | Cinema projection equipment and cinema projection system |
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