CN113721873A - Multi-screen display system and method based on passive mirror image - Google Patents
Multi-screen display system and method based on passive mirror image Download PDFInfo
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- CN113721873A CN113721873A CN202110786947.XA CN202110786947A CN113721873A CN 113721873 A CN113721873 A CN 113721873A CN 202110786947 A CN202110786947 A CN 202110786947A CN 113721873 A CN113721873 A CN 113721873A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 230000015654 memory Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
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- 239000013307 optical fiber Substances 0.000 description 3
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- 239000011159 matrix material Substances 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H04B10/2589—Bidirectional transmission
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Abstract
The invention relates to a multi-screen display system and a method based on passive mirror images, wherein the system comprises a first device, a plurality of photoelectric conversion modules, an optical splitter and a plurality of second devices, wherein the photoelectric conversion modules are respectively in communication connection with the second devices and the optical splitter; the plurality of photoelectric conversion modules are used for converting the first electric signals into first optical signals and restoring the plurality of paths of second optical signals into a plurality of paths of second electric signals; the optical splitter is used for equally dividing the first optical signal into a plurality of paths of second optical signals; and each second device is used for displaying images according to the restored second electric signals of each path. The invention equally divides the media signal into a plurality of identical mirror image signal flows through the optical branching device, and then realizes the multi-screen synchronous or asynchronous multimedia content display through a plurality of decoding or display devices.
Description
Technical Field
The invention belongs to the technical field of optical transmission and multimedia display, and particularly relates to a multi-screen display system and method based on passive mirror images.
Background
The conventional multi-screen display system building scheme is generally realized by directly adopting a networking mode of a conventional transmission cable and a signal distributor or adopting a networking mode of a network, and the two modes have some inevitable defects.
The advantage of multicasting lies in that the effect of screen projection is good, and one screen projection of the computer is the same as that of 10 screen projections, and in essence, the screen projection is point-to-point (one screen is matched with one wireless screen projection). The disadvantage is that each display screen is matched with one wireless screen projection device, so that the cost is relatively increased.
The wireless screen projection collocation matrix has the main advantage of low cost, and only one wireless screen projection equipment collocation matrix is needed for shunting. But the same disadvantages are obvious, and similar to shunting one signal source to a plurality of display screens, the screen projection effect is relatively poor. It should be appreciated that, as if a 10MB wide band were split to 5 computers, the network speed would certainly drop by one reason. According to the scheme, wireless screen projection is changed into HDMI wired connection, the split screen projection effect can be improved by adding signal amplification equipment, the improvement range is limited, the transmission distance limitation can be brought, and meanwhile, the manufacturing cost is greatly increased.
Disclosure of Invention
In order to reduce the cost of multi-screen display and improve the transmission distance and quality of multi-screen display, in a first aspect of the present invention, a multi-screen display system based on passive mirror image is provided, including a first device, a plurality of photoelectric conversion modules, an optical splitter and a plurality of second devices, where the photoelectric conversion modules are respectively in communication connection with the second devices and the optical splitter, and the first device is configured to output multimedia data or a control signal as a first electrical signal; the plurality of photoelectric conversion modules are used for converting the first electric signals into first optical signals and restoring the plurality of paths of second optical signals into a plurality of paths of second electric signals; the optical splitter is used for equally dividing the first optical signal into a plurality of paths of second optical signals; and each second device is used for displaying images according to the restored second electric signals of each path.
In some embodiments of the present invention, the photoelectric conversion module includes an electro-optical conversion unit and a photoelectric conversion unit, the electro-optical conversion unit is configured to convert the first electrical signal into a first optical signal; the photoelectric conversion unit is used for reducing the second optical signal into a second electric signal.
In some embodiments of the present invention, each of the second devices includes a decoding module configured to restore the second electrical signal to multimedia data or a control signal, and a display module; the display module is configured to display an image according to the multimedia data or the control signal.
Further, the second device further comprises an encoding module configured to re-encode the second electrical signal.
In the above embodiment, the first device includes a media output interface and a processor, and the processor is configured to acquire multimedia data and send out a control signal; the media output interface is used for outputting the multimedia data or the control signal as a first electric signal.
In a second aspect of the present invention, a passive mirror image based multi-screen display method is provided, including: outputting multimedia data or a control signal as a first electrical signal; converting the first electrical signal into a first optical signal; equally dividing the first optical signal into a plurality of paths of second optical signals; restoring the plurality of second optical signals into a plurality of second electrical signals; and displaying an image according to the restored second electric signals of each path.
Further, the displaying an image according to each path of the restored second electrical signals includes the following steps: restoring each path of second electric signals into multimedia data or control signals; and displaying an image according to the multimedia data or the control signal.
In a third aspect of the present invention, there is provided an electronic device comprising: one or more processors; a storage device, configured to store one or more programs, when the one or more programs are executed by the one or more processors, cause the one or more processors to implement the passive-mirror-based multi-screen display method according to the first aspect of the present invention.
In a fourth aspect of the present invention, a computer-readable medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the passive mirror image based multi-screen display method provided in the first aspect of the present invention.
The invention has the beneficial effects that:
1. the invention equally divides the media signal into a plurality of identical mirror image signal flows through the optical shunt device, and then realizes the multi-screen synchronous or asynchronous multimedia content display through a plurality of decoding or display devices;
2. the optical networks of the photoelectric conversion module and the optical splitter transmit data and control signals at the same time, so that the content control of a plurality of display terminals can be realized, and further the accurate control of multi-screen synchronous or asynchronous multimedia content can be realized;
3. compared with a multi-screen display method based on the traditional transmission cable and signal distributor, the multi-screen display method is lower in cost and simpler in networking; compared with a multi-screen display method of wireless screen projection, the method avoids mutual interference of shunt signals, occupies less bandwidth, and has better reliability and transmission quality.
Drawings
FIG. 1 is a block diagram of a basic configuration of a passive mirror based multi-screen display system in some implementations of the invention;
FIG. 2 is a block diagram illustrating an exemplary configuration of a passive mirror based multi-screen display system in accordance with some embodiments of the invention;
FIG. 3 is a block diagram of a second device in some implementations of the invention;
FIG. 4 is a second block diagram illustrating an exemplary configuration of a passive mirror based multi-screen display system in accordance with some embodiments of the present invention;
FIG. 5 is a flow chart illustrating a passive mirror based multi-screen display method in some embodiments of the invention;
FIG. 6 is a schematic diagram of an electronic device in some implementations of the invention.
Reference numerals
11. The optical device comprises a first device, 12 photoelectric conversion modules, 121 photoelectric conversion units, 122 photoelectric conversion units, 13 optical splitters, 14 second devices, 141 decoding modules, 142 display modules and 143 memories.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, in a first aspect of the present invention, there is provided a passive mirror image based multi-screen display system, including a first device 11, a plurality of photoelectric conversion modules 12, an optical splitter 13, and a plurality of second devices 14, where the photoelectric conversion modules 12 are respectively connected in communication with the second devices 14 and the optical splitter 13, and the first device 11 is configured to output multimedia data or a control signal as a first electrical signal; the plurality of photoelectric conversion modules 12 are configured to convert the first electrical signal into a first optical signal, and restore the plurality of second optical signals into a plurality of second electrical signals; the optical splitter 13 is configured to equally divide the first optical signal into multiple paths of second optical signals; each of the second devices 14 is configured to display an image according to each of the restored second electrical signals.
It is to be understood that, between the first optical signal and the second optical signal, the first electrical signal and the second electrical signal are in mirror image relationship, and the "first" or "second" is only a different form of the description signal in the flow direction, and there is only a slight or weak difference between the electrical signals or the optical signals, so that in some practical situations, the equivalent can be considered.
Referring to fig. 2, in some embodiments of the present invention, the photoelectric conversion module 12 includes an electro-optical conversion unit 122 and a photoelectric conversion unit 121, the electro-optical conversion unit 122 is configured to convert the first electrical signal into a first optical signal; the photoelectric conversion unit 121 is configured to restore the second optical signal to a second electrical signal.
Referring to fig. 3, in some embodiments of the present invention, each of the second devices 14 includes a decoding module 141 and a display module 142, the decoding module 141 configured to restore the second electric signal to multimedia data or a control signal; the display module 142 is configured to display an image according to the multimedia data or the control signal.
The second device 14 further comprises an encoding module configured to re-encode the second electrical signal. Further, the above scheme converts the multimedia data outputted from the first device 11 into optical signals for transmission, and after passing through the optical splitter 13, the optical signals are divided into several identical mirror image signal streams, and then transmitted to each display terminal or the memory 143 (storage terminal). A core processor such as a terminal decoder or encoder converts these image signals into video signals in whole or in part according to the settings of each terminal, outputs the video signals on a display, or compresses the image signals into a format convenient for storage, archives the video signals, or uses the video signals for other purposes. By the method, synchronous display operation of multiple terminals under the same signal source is realized. Partially converted to video output on a display or compressed into a format convenient for storage for archiving or other uses. By the method, synchronous display operation of multiple terminals under the same signal source is realized. Each group of optical fiber bundles supports one or more paths of data return, and the function of the optical fiber bundles is to collect feedback data from terminal equipment such as a display and return the feedback data to a front-end processor (such as an electronic map navigation system in a store). Optionally, the display module 142 in the second device 14 (display device) may be integrated with or separated from one or more of the decoding module, the encoding module, and the memory 143, and is not limited to the combination or connection manner in fig. 2 to fig. 4.
Illustratively, the invention can be used for multi-screen synchronous or asynchronous media content display of theaters, school multimedia classrooms, meeting rooms, building indication systems, large exhibition halls, even platform information display systems of railways, roads or civil aviation, car insurance indication or media systems, and intelligent vehicle-mounted systems.
Referring to fig. 4, in the above embodiment, the first device 11 includes a media output interface and a processor, and the processor is configured to acquire multimedia data and send out a control signal; the media output interface is used for outputting the multimedia data or the control signal as a first electric signal. Optionally, the media output interface includes, but is not limited to, a composite video interface, an S-video interface, a color difference interface, a VGA interface, an HDMI interface, and an SDI interface.
Example 2
Referring to fig. 5, in a second aspect of the present invention, there is provided a passive mirroring-based multi-screen display method, including: s100, outputting multimedia data or a control signal as a first electric signal; s200, converting the first electric signal into a first optical signal; s300, equally dividing the first optical signal into a plurality of paths of second optical signals; s400, restoring the plurality of paths of second optical signals into a plurality of paths of second electric signals; and S500, displaying an image according to the restored second electric signals of each path.
Further, in step S500 of some embodiments, the displaying an image according to each restored second electrical signal includes: restoring each path of second electric signals into multimedia data or control signals; and displaying an image according to the multimedia data or the control signal.
Example 3
In a third aspect of the present invention, there is provided an electronic device comprising: one or more processors; a storage device, configured to store one or more programs, which when executed by the one or more processors, cause the one or more processors to implement the passive-mirror-based multi-screen display method according to the second aspect of the present invention.
Referring to fig. 6, an electronic device 500 may include a processing means (e.g., central processing unit, graphics processor, etc.) 501 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage means 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 500 are also stored. The processing device 501, the ROM502, and the RAM 503 are connected to each other through a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
The following devices may be connected to the I/O interface 505 in general: input devices 506 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 507 including, for example, a Liquid Crystal Display (LCD), speakers, vibrators, and the like; a storage device 508 including, for example, a hard disk; and a communication device 509. The communication means 509 may allow the electronic device 500 to communicate with other devices wirelessly or by wire to exchange data. While fig. 6 illustrates an electronic device 500 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided. Each block shown in fig. 6 may represent one device or may represent multiple devices as desired.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication means 509, or installed from the storage means 508, or installed from the ROM 502. The computer program, when executed by the processing device 501, performs the above-described functions defined in the methods of embodiments of the present disclosure. It should be noted that the computer readable medium described in the embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In embodiments of the disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In embodiments of the present disclosure, however, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more computer programs which, when executed by the electronic device, cause the electronic device to:
computer program code for carrying out operations for embodiments of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, Python, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A multi-screen display system based on passive mirror images is characterized by comprising a first device, a plurality of photoelectric conversion modules, an optical splitter and a plurality of second devices, wherein the photoelectric conversion modules are respectively in communication connection with the second devices and the optical splitter,
the first device is used for outputting multimedia data or control signals as first electric signals;
the plurality of photoelectric conversion modules are used for converting the first electric signals into first optical signals and restoring the plurality of paths of second optical signals into a plurality of paths of second electric signals;
the optical splitter is used for equally dividing the first optical signal into a plurality of paths of second optical signals;
and each second device is used for displaying images according to the restored second electric signals of each path.
2. A passive-mirror-based multi-display system according to claim 1, wherein the photoelectric conversion module includes an electro-optical conversion unit and a photoelectric conversion unit,
the electro-optical conversion unit is used for converting the first electric signal into a first optical signal;
the photoelectric conversion unit is used for reducing the second optical signal into a second electric signal.
3. A passive image-based multi-display system according to claim 1, wherein each of the second devices includes a decode module and a display module,
the decoding module is configured to restore the second electric signal to multimedia data or a control signal;
the display module is configured to display an image according to the multimedia data or the control signal.
4. A passive mirror-based multi-display system according to claim 3,
the second device also includes an encoding module configured to re-encode the second electrical signal.
5. A passive mirror based multi-display system according to claim 1, wherein each of the second devices is further configured to send a feedback signal to the first device via the optical-to-electrical conversion module and the optical splitter in response to a control signal in the first electrical signal sent by the first device.
6. A passive mirror-based multi-display system according to any of claims 1-5, wherein the first device comprises a media output interface and a processor,
the processor is used for acquiring multimedia data and sending out a control signal;
the media output interface is used for outputting the multimedia data or the control signal as a first electric signal.
7. A multi-screen display method based on passive mirror image is characterized by comprising the following steps:
outputting multimedia data or a control signal as a first electrical signal;
converting the first electrical signal into a first optical signal;
equally dividing the first optical signal into a plurality of paths of second optical signals;
restoring the plurality of second optical signals into a plurality of second electrical signals;
and displaying an image according to the restored second electric signals of each path.
8. A passive mirror based multi-screen display method according to claim 7, wherein the displaying an image according to each restored second electrical signal comprises the steps of:
restoring each path of second electric signals into multimedia data or control signals;
and displaying an image according to the multimedia data or the control signal.
9. An electronic device, comprising: one or more processors; a storage device to store one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the passive-image-based multi-screen display method according to any one of claims 7 to 8.
10. A computer-readable medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the passive mirror based multi-screen display method according to any one of claims 7 to 8.
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| CN104349120A (en) * | 2013-07-26 | 2015-02-11 | 北京计算机技术及应用研究所 | Audio and video decoding system and decoding method thereof |
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Application publication date: 20211130 |