CN112637527B - LED television control system, multimedia television and cascade system - Google Patents
LED television control system, multimedia television and cascade system Download PDFInfo
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- CN112637527B CN112637527B CN202011462038.2A CN202011462038A CN112637527B CN 112637527 B CN112637527 B CN 112637527B CN 202011462038 A CN202011462038 A CN 202011462038A CN 112637527 B CN112637527 B CN 112637527B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
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Abstract
The embodiment of the invention provides an LED television control system, a multimedia television and a cascade system, wherein the LED television control system comprises a main control unit, a switching unit and a data processing unit; the main control unit is used for sending a first type control instruction to the switching unit and transmitting first type data to the switching unit after receiving the video type switching instruction; the switching unit is used for acquiring first or second data based on the video type indicated by the first control instruction after receiving the first control instruction, and transmitting the first or second data to the data processing unit; the second type of data is synchronous video data provided by an external video source; and the data processing unit is used for receiving the first or second data transmitted by the switching unit, converting the received first or second data into LED display data and then transmitting the LED display data to the LED display screen. The scheme can realize the switching between the synchronous video and the asynchronous video in the LED television.
Description
Technical Field
The invention relates to the technical field of LED televisions, in particular to an LED television control system, a multimedia television and a cascade system.
Background
With the pursuit of a television with a high quality screen, a large screen, and a Light and thin body, an LED (Light Emitting Diode) television has been produced. The LED tv adopts the light emitting diode as the backlight source, and has advantages over the conventional liquid crystal tv (Cold Cathode Fluorescent Lamp) such as picture quality, service life, size of the main body, thickness, energy saving and environmental protection, and has become the mainstream development direction of the tv.
In addition, the multimedia television has the functional requirements of playing synchronous videos such as cable television programs and asynchronous videos such as network videos or local videos, so that the watching preference of users is met.
Therefore, a need exists for a LED television control system to implement switching between synchronous video and asynchronous video in an LED television, so as to meet the user's demand for LED multimedia televisions.
Disclosure of Invention
The embodiment of the invention aims to provide an LED television control system, a multimedia television and a cascade system so as to realize the switching between synchronous videos and asynchronous videos in the LED television. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present disclosure provides an LED television control system, including: the system comprises a main control unit, a switching unit and a data processing unit;
the main control unit is used for sending a first type of control instruction for switching the video type to the switching unit after receiving the video type switching instruction, and is also used for transmitting first type of data to the switching unit when the first type of control instruction indicates that the video type is switched to an asynchronous video; the first type of data comprises asynchronous video data which can be acquired by the main control unit;
the switching unit is used for acquiring the first type of data or the second type of data based on the video type indicated by the first control instruction and transmitting the first type of data or the second type of data to the data processing unit after receiving the first type of control instruction; the second type of data is synchronous video data provided by an external video source;
the data processing unit is used for receiving the first type of data or the second type of data transmitted by the switching unit, converting the received first type of data or the received second type of data into LED display data and then sending the LED display data to an LED display screen.
In some embodiments, the main control unit includes a system on chip SOC, and the SOC is provided with a first output interface, a first input interface for acquiring asynchronous video data, and an instruction receiving module for receiving the video type switching instruction;
the switching unit comprises a video channel selector, and the video channel selector is provided with a second input interface, a second output interface and a third input interface for externally connecting a video source;
the data processing unit comprises a Field Programmable Gate Array (FPGA), and the FPGA is provided with a fourth input interface;
the second input interface is connected with the first output interface, and the second output interface is connected with the fourth input interface.
In some embodiments, the switching unit further comprises a video channel distributor provided with a fifth input interface, a third output interface and a fourth output interface;
the fifth input interface is connected with the second output interface, the third output interface is connected with the fourth input interface, and the fourth output interface is externally connected with a display device except the LED display screen.
In some embodiments, the main control unit is further configured to send a second type of control instruction for the LED display screen to the data processing unit;
and the data processing unit is also used for executing control operation corresponding to the second type of control instruction on the LED display screen.
In some embodiments, the FPGA is provided with an audio output interface for connection with an external speaker.
In some embodiments, the first input interface comprises: at least one of a network interface, a wireless interface, and a Universal Serial Bus (USB) interface.
In some embodiments, the system further comprises: a sensor for acquiring scene data;
the main control unit is used for carrying out working environment early warning on the LED display screen according to the scene data collected by the sensor, and/or sending a second type of control instruction aiming at the LED display screen to the data processing unit according to the scene data collected by the sensor.
In some embodiments, the first type of data further comprises: interface data of the master control interface; wherein the main control interface is an operation interface of the main control unit.
In a second aspect, an embodiment of the present disclosure further provides an LED multimedia television, including an LED display screen and the LED television control system of the first aspect;
the LED television control system is arranged on the back of the LED display screen;
and the LED display screen is used for receiving and displaying the LED display data transmitted by the LED television control system.
In a third aspect, an embodiment of the present disclosure further provides an LED multimedia television cascade system, including a plurality of LED multimedia televisions, where each LED multimedia television includes an LED display screen and the LED television control system provided with the video channel selector;
and the fourth output interface of the video channel distributor of the previous LED multimedia television is connected with the third input interface of the video channel selector of the next LED multimedia television.
According to the LED television control system provided by the embodiment of the invention, the asynchronous video data provided by the main control unit or the synchronous video data provided by the external video source can be switched and selected through the switching unit, so that the switching between the synchronous video and the asynchronous video in the LED television can be realized through the scheme, and the requirements of users on the LED multimedia television can be met.
In addition, the LED television control system provided by the embodiment of the invention can be integrated, so that the control system has stable and reliable performance, simple installation and debugging and lower cost, is suitable for large-scale production and can effectively meet the requirements of the masses on LED multimedia televisions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described 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 that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1(a) is a schematic structural diagram of an LED television control system according to an embodiment of the present invention;
fig. 1(b) is a schematic diagram of a connection relationship between an LED television control system and an LED display screen and a video source according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an operating principle of an LED television control system according to an embodiment of the present invention;
fig. 3 is another schematic diagram of an LED tv control system according to an embodiment of the present invention;
fig. 4 is another schematic diagram of another LED tv control system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a switching unit in the LED television control system of fig. 4;
fig. 6 is a front view of an LED multimedia television according to an embodiment of the present invention;
FIG. 7 is a left side view of the LED multimedia television provided in FIG. 6;
fig. 8 is a rear view of the LED multimedia television provided in fig. 6;
fig. 9 is a schematic structural diagram of an LED multimedia tv cascade system according to an embodiment of the present invention;
fig. 10 is a working schematic diagram of an LED multimedia television cascade system according to an embodiment of the present invention. The reference numerals in the figures are explained as follows:
100-LED television control system;
1-a main control unit, 11-a first input interface, 12-an instruction receiving module, and 13-a first output interface;
2-switching unit, 21-video channel selector, 211-second input interface, 212-third input interface, 213-second output interface;
22-video channel distributor, 221-fifth input interface, 222-third output interface, 223-fourth output interface;
3-data processing unit, 31-fourth input interface, 32-audio output interface;
101-a sensor;
200-LED display screen;
300-video source
10-LED multimedia television.
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.
The embodiment of the invention provides an LED television control system, a multimedia television and a cascade system, which are used for realizing the switching between synchronous videos and asynchronous videos in the LED television. The LED television control system, the LED multimedia television, and the LED multimedia television cascade system according to the embodiments of the present invention are described in sequence with reference to the accompanying drawings.
As shown in fig. 1(a), an LED tv control system 100 provided in an embodiment of the present invention may include: the system comprises a main control unit 1, a switching unit 2 and a data processing unit 3;
the main control unit 1 is configured to send a first type of control instruction for switching a video type to the switching unit 2 after receiving the video type switching instruction, and is further configured to transmit first type of data to the switching unit 2 when the first type of control instruction indicates that the video type is switched to an asynchronous video; wherein, the first type of data includes asynchronous video data that can be acquired by the main control unit 1;
the switching unit 2 is configured to, after receiving the first type control instruction, obtain the first type data or the second type data based on the video type to which the first control instruction indicates to switch, and transmit the first type data or the second type data to the data processing unit 3; the second type of data is synchronous video data provided by an external video source;
the data processing unit 3 is configured to receive the first type of data or the second type of data transmitted by the switching unit 2, convert the received first type of data or second type of data into LED display data, and send the LED display data to the LED display screen.
For convenience of understanding, fig. 1(b) shows the connection relationship between the LED tv control system and the LED display screen 200 and the video source 300; fig. 2 shows the working principle of the LED television control system.
The synchronized video data in this embodiment may be: real-time video data provided by a particular video source and transmitted over a video interface, such as: broadcast television data provided by a television set-top box or real-time video data provided by a video source such as a computer host. The broadcast television data or the real-time video data may be transmitted through standard interfaces such as HDMI (High Definition Multimedia Interface), DVI (Digital Visual Interface), or DP (display port). And the asynchronous video data may be: video data that is transmitted without specific video sources and standard video interfaces, such as: the video data of the pre-recorded video file is transmitted through standard interfaces such as an ethernet interface and a USB (Universal Serial Bus) interface.
The LED television control system includes two processing devices, i.e., the main control unit 1 and the data processing unit 3, and a switching unit 2 for connecting the two processing devices. Specifically, the main control unit 1 may be a processor loaded with an operating system program, and is configured to implement main control of the control system and acquire asynchronous video data; the processing function of the data processing unit 3 may include converting the data transmitted by the switching unit 2 into LED display data, so as to ensure normal display of the LED display screen 200; the switching unit 2 is a device capable of being externally connected to the main control unit 1 and an external video source 300, and realizes switching between synchronous video data and asynchronous video data under the control of the main control unit 1. It can be understood that the reliability and stability of the control system can be ensured by the division and cooperation of the two devices with processing functions. In addition, the switching unit 2 can identify the type of the video to be switched to, i.e. identify whether to acquire the first type data or the second type data, through the first type control instruction. For example, the first type of control instruction may carry video type information, where the video type information is type information of a video type to which the first type of control instruction indicates to switch; or, the first type control instruction may not carry video type information, and at this time, the video type to which the first type control instruction indicates is: the switching unit 2 currently acquires a video type other than the video type to which the data belongs, and so on.
In addition, for the main control unit 1, it may receive a video type switching instruction sent by an external control device, and further respond to the video type switching instruction to control the switching unit 2 to perform video type switching, that is, select the first type data or the second type data to be switched to transmit to the data processing unit 3, thereby implementing switching display of asynchronous video data and synchronous video data. Illustratively, the external control device may be a television remote controller, other intelligent remote control devices, or a cloud device, etc. In addition, the first type of control instruction sent by the main control unit 1 to the switching unit 2 is used to instruct the switching unit 2 to implement: the data transmitted to the data processing unit 3 is switched to the first type of data or the second type of data, that is, the video data channel is switched.
In the embodiment of the present invention, the main control unit 1 may send the first type of control instruction to the switching unit 2 through a control bus such as an I2C (Inter-Integrated Circuit) bus, and transmit the first type of data to the switching unit through a TMDS (Transition-minimized differential signaling) hardware link.
It is understood that, in order to be able to receive the instructions sent by the external control device, for example: the main control unit 1 may be provided with an instruction receiving module 12, for example: for the external control device being a television remote controller, the instruction receiving module 12 may be an infrared receiver corresponding to an infrared transmitter of the television remote controller, and the infrared receiver may also be referred to as an infrared sensor. Also, in order to be able to acquire asynchronous video data, the master control unit 1 may have an interface for acquiring asynchronous video data, such as: a network interface, a USB interface, etc., wherein the network interface may include one or more of an RJ45 interface or a communication interface of a wifi module. The switching unit 2 may have an interface for externally connecting a video source such as a digital set-top box, so as to acquire the synchronous video data. In order to realize data and/or instruction transmission, the main control unit 1 and the switching unit 2 may be connected through an interface, and the switching unit 2 and the data processing unit 3 may be connected through an interface.
It should be noted that, after the LED television control system is started, the main control unit 1 may automatically acquire the asynchronous video data according to the system setting, or may not immediately acquire the asynchronous video data, but acquire the asynchronous video data according to an operation instruction sent by an external control device. For example: the user operates a physical key or a virtual key of the external control device to issue an operation instruction for instructing acquisition of asynchronous video data to the main control unit 1.
According to the LED television control system provided by the embodiment of the invention, the asynchronous video data provided by the main control unit 1 or the synchronous video data provided by the external video source can be switched and selected through the switching unit 2, so that the switching between the synchronous video and the asynchronous video in the LED television can be realized through the scheme, and the requirements of users on the LED multimedia television can be met.
In addition, the LED television control system provided by the embodiment of the invention can be integrated, so that the control system has stable and reliable performance, simple installation and debugging and lower cost, is suitable for large-scale production and can effectively meet the requirements of the masses on LED multimedia televisions.
Optionally, in another embodiment of the present invention, as shown in fig. 3 and fig. 4, the main control unit 1 includes a system on chip SOC, where the SOC is provided with a first output interface 13, a first input interface 11 for acquiring asynchronous video data, and an instruction receiving module 12 for receiving the video type switching instruction;
the switching unit 2 comprises a video channel selector 21, and the video channel selector 21 is provided with a second input interface 211, a second output interface 213 and a third input interface 212 for externally connecting a video source;
the data processing unit 3 comprises a field programmable gate array FPGA, which is provided with a fourth input interface 31;
the second input interface 211 is connected to the first output interface 13, and the second output interface 213 is connected to the fourth input interface 31.
The video channel selector 21 is configured to acquire the first type data or the second type data according to the first type control instruction and transmit the acquired data to the data processing unit 3, that is, to switch the video channel to a channel for transmitting the first type data or a channel for transmitting the second type data.
And the first output interface 13 is used to transmit the first type of data to the video channel selector 21; the second input interface 211 of the video channel selector 21 is configured to receive the first type of data output by the first output interface 13 of the main control unit 1; the third input interface 212 of the video channel selector 21 is configured to receive the second type of data output by the external video source; the second output interface 213 of the video channel selector 21 is configured to send the acquired first type data or second type data to the data processing unit 3; the fourth input interface 31 is used for receiving data transmitted through the second output interface 213.
Based on the above description of the interfaces, the main control unit 1 transmits the first type of data to the video channel selector 21 through the first output interface 13, the video channel selector 21 obtains the first type of data through the second input interface 211, and the video channel selector 21 obtains the second type of data from the external video source through the third input interface 212; and, the video channel selector 21 transmits the acquired first class data or second class data to the data processing unit 3 through the second output interface 213 and the fourth input interface 31.
The video channel selector 21 may be an HDMI selector for accessing an HDMI video stream. In order to improve the versatility of the video channel selector 21, a converter may be added to the HDMI selector to support the video channel selector 21 for video streams of other formats such as DVI and DP.
It should be emphasized that the specific device types of the main control unit 1, the switching unit 2 and the data processing unit 3 in the present embodiment are merely examples, and should not be construed as limitations of the embodiments of the present invention. Illustratively, when the main control unit 1 includes a system on chip SOC, the data processing unit 3 and the switching unit 2 may employ other device types, and similarly, when the data processing unit 3 includes an FPGA, the main control unit 1 and the switching unit 2 may employ other device types, and when the switching unit 2 includes a video channel selector 21, the main control unit 1 and the data processing unit 3 may employ other device types.
The SOC may further implement common functions such as hot spot docking and media content creation through a loaded operating system, and the operating system may be an android operating system, a Windows operating system, an apple operating system, and the like. The FPGA can convert video data into LED display data. The SOC and the FPGA work independently, the labor division is clear, and the reliability and the stability of the whole LED television control system can be effectively guaranteed.
Illustratively, the first input interface 11 may include: at least one of a network interface, a wireless interface, and a USB interface.
The network interface includes an RJ45 ETH interface. The RJ45 ETH interface can be used for configuring the LED television control system before leaving a factory, and is connected with the Internet through the RJ45 ETH interface, so that cloud login, configuration and online upgrading operation of the control system are achieved.
The wireless interface is of various types, including but not limited to wifi interface, bluetooth interface, etc.
The USB interface can be externally connected with a physical hard disk, such as a U disk, and provides support for asynchronous video playing. The USB interface can be inserted into external equipment of a mouse and a keyboard lamp, and support is provided for flexible operation of the multimedia television.
In addition, it is understood that the video channel selector 21 acquires the first type of data through the second input interface 211 connected to the first output interface 13, and acquires the synchronized video data through the third input interface 212 connected to an external video source. The third input interface 212 may be named as a Video IN interface, which can be defined as HDMI, DP, or DVI type according to actual needs, and IN a specific application, one or more third input interfaces 212 may be set according to actual needs, so that one or more paths of synchronous Video data input may be implemented. In addition, the instruction receiving module 12 may be an infrared IR receiver, and the instruction receiving module 12 may receive an external control device (such as an operation instruction and a video type switching instruction sent by a television remote controller). In addition, the FPGA may be provided with an audio output interface 32, the audio output interface 32 being adapted to connect with an external speaker. The FPGA can separate audio data, DA conversion is achieved through an audio code chip in the FPGA, and finally sound equipment is connected to the outside to play audio, and the audio is synchronous with the LED television pictures.
The LED television control system provided by the embodiment of the invention can be integrated, so that the control system has stable and reliable performance, simple installation and debugging and lower cost, is suitable for large-scale production and can effectively meet the requirements of the masses on LED multimedia televisions.
Optionally, as shown in fig. 5, in another embodiment of the present invention, the switching unit 2 may further include a video channel distributor 22, and the video channel distributor 22 is provided with a fifth input interface 221, a third output interface 222, and a fourth output interface 223;
the fifth input interface 221 is connected to the second output interface 213, the third output interface 222 is connected to the fourth input interface 31, and the fourth output interface 223 is used for externally connecting a display device other than the LED display screen 200.
The video channel distributor 22 is used to distribute the acquired video data into multiple paths of identical data and synchronously output the multiple paths of data.
The second output interface 213 of the video channel selector 21 is configured to send the acquired first type data or second type data to the video channel distributor 22; the fifth input interface 221 of the video channel allocator 22 is configured to receive the video data output by the video channel selector 21 via the second output interface 213. After the video channel distributor 22 receives the first type of data or the second type of data, the third output interface 222 and the fourth output interface 223 are used for outputting the first type of data or the second type of data, wherein the data output by the third output interface 222 and the data output by the fourth output interface 223 are the same. The fourth input interface 31 is used for receiving data transmitted through the third output interface 222.
Based on the above description of the interfaces, after the video channel distributor 22 receives the first type data or the second type data sent by the second output interface 213 of the video channel selector 21 through the fifth input interface 221, the first type data or the second type data may be output through the third output interface 222 and the fourth output interface 223. The third output interface 222 can transmit the first type data or the second type data to the data processing unit 3; the fourth output interface 223 may transmit the first type of data or the second type of data to other LED television control systems.
It is understood that the number of the fourth output interfaces 223 in the switching unit 2 may be one or more, that is, the LED television control system may be externally connected with one or more of the above-mentioned display devices.
In this embodiment, the video channel allocator 22 may be an HDMI allocator for accessing HDMI video streams. In order to improve the versatility of the video channel selector 21, a converter may be added to the HDMI distributor to support the video channel distributor 22 for video streams of other formats, such as DVI, DP, and the like. Through the video channel distributor 22 in the switching unit 2, a plurality of display devices can be connected, and the video synchronous playing of the plurality of display devices is realized.
Optionally, in another embodiment of the present invention, as shown in fig. 2 to 4, the main control unit 1 is further configured to send a second type of control instruction for the LED display screen 200 to the data processing unit 3;
the data processing unit 3 is further configured to perform a control operation corresponding to the second type of control instruction on the LED display screen 200.
The main control unit 1 is connected to the data processing unit 3, and can implement operations such as instruction issuing, status returning and the like through a Serial Peripheral Interface (SPI), Universal Asynchronous Receiver/Transmitter (UART), Inter-Integrated Circuit (I2C), and other buses, wherein the so-called status returning can include returning of device status information after an issued instruction is responded. For example, the second type of control instruction may include, but is not limited to: the control instruction for adjusting the output state of the LED display 200 includes, for example: brightness adjustment instructions, voice control instructions, picture control instructions, and the like. The picture control instruction can be used for realizing picture adjustment such as picture scaling and resolution adjustment.
Optionally, in another embodiment of the present invention, as shown in fig. 2 to 4, the LED television control system may further include: a sensor 101 for collecting scene data;
the main control unit 1 is configured to perform a working environment early warning on the LED display screen 200 according to the scene data acquired by the sensor 101, and/or send a second type of control instruction for the LED display screen 200 to the data processing unit 3 according to the scene data acquired by the sensor 101.
The sensor 101 may be at least one sensor 101 of a temperature and humidity sensor 101, a light sensor 101, and a 3D sensor 101; the main control unit 1 can monitor and early warn the working environment of the LED multimedia television through the temperature and humidity sensor 101; the main control unit 1 can adjust the display state of the LED multimedia television through the light sensor 101; the main control unit 1 can realize a 3D image playing function through the 3D sensor 101.
Optionally, in another embodiment of the present invention, the first type of data may further include display data of a master control interface;
the main control interface is an operation interface of the main control unit 1.
It should be noted that, when the switching unit 2 determines that the data to be switched to is the first type of data according to the first type of control instruction, for the case that the asynchronous video data is not immediately acquired, the main control unit 1 may transmit the display data of the main control interface to the switching unit 2, and the data processing unit 3 receives the display data of the main control interface, converts the display data into the LED display data, and then transmits the LED display data to the LED display screen 200. A user can conveniently send an operation instruction through an external control device (such as a television remote controller) under the guidance of a main control interface of the main control unit 1 displayed on the LED display screen 200, so that the main control unit 1 obtains asynchronous video data according to the operation instruction.
Based on the LED television control system, the embodiment of the invention also provides an LED multimedia television. As shown in fig. 6 to 8, an LED multimedia television provided in an embodiment of the present invention may include an LED display screen 200 and the LED television control system 100 in the above embodiment; the LED television control system 100 is arranged on the back of the LED display screen 200; and the LED display screen 200 is configured to receive and display LED display data transmitted by the LED television control system 100.
As can be seen from fig. 7, the LED television control system 100 is fixed on the back of the LED display screen 200 in the form of a backpack, and the whole LED multimedia television has a compact structure and presents an ultra-thin integrated product form.
For expanding the display, as shown in fig. 9, the embodiment of the present invention further provides an LED multimedia television cascade system, which includes a plurality of LED multimedia televisions 10, where each LED multimedia television includes an LED display screen and the LED television control system with the video channel selector;
wherein the fourth output interface 223 of the video channel distributor of the previous LED multimedia television 10 is connected to the third input interface 212 of the video channel selector of the following LED multimedia television 10.
For convenience of understanding, fig. 10 shows an operation principle diagram of the LED multimedia television cascade system. As shown in fig. 10, the asynchronous video data or the synchronous video data output by the switching unit 2 of the previous LED multimedia tv through the fourth output interface 223 may be transmitted to the third input interface 212 of the switching unit 2 of the next LED multimedia tv. Therefore, when the switching unit 2 of the next LED multimedia tv switches to display the second type of data, the LED display screen 200 can synchronously display the video frame of the previous LED multimedia tv.
The LED multimedia television cascade system provided by the embodiment of the invention can be applied to video synchronous playing of a plurality of LED multimedia televisions in a large space environment, for example: a plurality of televisions with synchronous video picture display requirements exist in the dining room, and indoor and outdoor advertising equipment such as squares and waiting halls which need to synchronously display video contents has a very wide application prospect.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. An LED television control system, comprising: the system comprises a main control unit (1), a switching unit (2) and a data processing unit (3);
the main control unit (1) is configured to send a first type of control instruction for switching a video type to the switching unit (2) after receiving a video type switching instruction, and is further configured to transmit first type data to the switching unit (2) when the first type of control instruction indicates that the video type is switched to an asynchronous video; wherein the first type of data comprises asynchronous video data that the master control unit (1) is capable of acquiring;
the switching unit (2) is used for acquiring the first type data or the second type data based on the video type indicated by the first control instruction after receiving the first type control instruction, and transmitting the first type data or the second type data to the data processing unit (3); the second type of data is synchronous video data provided by an external video source;
the data processing unit (3) is used for receiving the first type of data or the second type of data transmitted by the switching unit (2), converting the received first type of data or the received second type of data into LED display data and then sending the LED display data to an LED display screen (200);
the main control unit (1) comprises a System On Chip (SOC), and the SOC is provided with a first output interface (13), a first input interface (11) for acquiring asynchronous video data and an instruction receiving module (12) for receiving the video type switching instruction;
the switching unit (2) comprises a video channel selector (21), and the video channel selector (21) is provided with a second input interface (211), a second output interface (213) and a third input interface (212) for externally connecting a video source;
the data processing unit (3) comprises a Field Programmable Gate Array (FPGA), and the FPGA is provided with a fourth input interface (31);
wherein the second input interface (211) is connected with the first output interface (13), and the second output interface (213) is connected with the fourth input interface (31);
the switching unit (2) further comprises a video channel distributor (22), and the video channel distributor (22) is provided with a fifth input interface (221), a third output interface (222) and a fourth output interface (223);
the fifth input interface (221) is connected with the second output interface (213), the third output interface (222) is connected with the fourth input interface (31), and the fourth output interface (223) is used for externally connecting display equipment except the LED display screen (200).
2. The system according to claim 1, characterized in that the master control unit (1) is further configured to send a second type of control instruction for the LED display screen (200) to the data processing unit (3);
the data processing unit (3) is also used for executing control operation corresponding to the second type of control instruction on the LED display screen (200).
3. The system according to claim 1, characterized in that the FPGA is provided with an audio output interface (32), the audio output interface (32) being adapted to be connected to an external loudspeaker.
4. The system according to claim 1, characterized in that the first input interface (11) comprises: at least one of a network interface, a wireless interface, and a Universal Serial Bus (USB) interface.
5. The system of claim 2, further comprising: a sensor (101) for acquiring scene data;
the main control unit (1) is used for carrying out working environment early warning on the LED display screen (200) according to the scene data collected by the sensor (101), and/or sending a second type of control instruction aiming at the LED display screen (200) to the data processing unit (3) according to the scene data collected by the sensor (101).
6. The system of claim 1, wherein the first type of data further comprises: interface data of the master control interface; wherein the main control interface is an operation interface of the main control unit (1).
7. LED multimedia television, characterized in that it comprises an LED display screen (200) and an LED television control system (100) according to any one of claims 1 to 6;
the LED television control system (100) is arranged on the back of the LED display screen (200);
and the LED display screen (200) is used for receiving and displaying the LED display data transmitted by the LED television control system (100).
8. LED multimedia television cascade system, comprising a plurality of LED multimedia televisions, said LED multimedia televisions comprising an LED display screen and an LED television control system (100) according to claim 1;
wherein the fourth output interface (223) of the video channel distributor (22) of the previous LED multimedia television is connected with the third input interface (212) of the video channel selector (21) of the following LED multimedia television.
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| CN202011462038.2A CN112637527B (en) | 2020-12-11 | 2020-12-11 | LED television control system, multimedia television and cascade system |
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