CN111083414A - Master control circuit board and display device - Google Patents
Master control circuit board and display device Download PDFInfo
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- CN111083414A CN111083414A CN201911424661.6A CN201911424661A CN111083414A CN 111083414 A CN111083414 A CN 111083414A CN 201911424661 A CN201911424661 A CN 201911424661A CN 111083414 A CN111083414 A CN 111083414A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a main control circuit board and a display device, wherein the main control circuit board is used for the display device and comprises a first interface, a second interface, a first signal processing circuit and a second signal processing circuit; the first interface is connected with the first signal processing circuit, and the second interface is connected with the second signal processing circuit; and the first signal processing circuit is in communication connection with the second signal processing circuit. According to the technical scheme, the transmission channel of the 8K signal can be increased, and the cost of the display device is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a main control circuit board and a display device.
Background
The interface standards HDMI2.1 and DP1.4 supporting 8K (7680 × 4320) signals have been released, which indicates that 8K tv will be popularized in common people, but at present, 8K tv has the following disadvantages:
1. only the single-channel DP1.4 interface is supported to input 8K signals, and the HDMI2.1 interface and other interfaces are not supported to input 8K signals;
2. the logic adapter board is required to complete the logic identification of the 8K signal and the 4K signal, and the signals can be output to the 8K display screen for display.
Disclosure of Invention
The invention provides a main control circuit board and a display device, aiming at increasing a transmission channel of 8K audio and video signals and reducing the cost of the display device.
In order to achieve the above object, the present invention provides a main control circuit board for a display device, the main control circuit board includes a first interface, a second interface, a first signal processing circuit and a second signal processing circuit;
the first interface is connected with the first signal processing circuit, and the second interface is connected with the second signal processing circuit; the first signal processing circuit is in communication connection with the second signal processing circuit;
the first signal processing circuit is used for receiving audio and video signals input by a first interface and transmitting 8K video signals in the audio and video signals input by the first interface to the second signal processing circuit;
the second signal processing circuit is used for outputting the 8K video signal to an 8K display screen of the display device for displaying;
the second signal processing circuit is further configured to receive an audio/video signal input by a second interface, and output an 8K video signal in the audio/video signal input by the second interface to the 8K display screen for display.
Optionally, the first interface includes at least one of a digital television interface, a composite synchronous video broadcast signal interface, a serial bus interface, and a network interface; the second interface is a high-definition multimedia interface.
Optionally, the second signal processing circuit transmits an audio signal in the audio and video signal input by the second interface to the first signal processing circuit through a high-definition multimedia interface.
Optionally, the first signal processing circuit transmits an 8K video signal in the audio and video signals input by the first interface to the second signal processing circuit through a USB communication protocol.
Optionally, the first signal processing circuit transmits a 4K video signal in the audio and video signals input BY the first interface to the second signal processing circuit through a V-BY-ONE interface.
Optionally, the main control circuit board further includes a power management circuit, a first output end of the power management circuit is connected to a power end of the first signal processing circuit, and a second output end of the power management circuit is connected to a power end of the second signal processing circuit.
Optionally, the main control circuit board further comprises a power amplifier module, the audio signal output end of the first signal processing circuit is connected with the input end of the power amplifier module, and the output end of the power amplifier module is connected with the loudspeaker device.
Optionally, the main control circuit board further includes a first storage module, and the first storage module is electrically connected to the first signal processing circuit.
Optionally, the main control circuit board further includes a second storage module, and the second storage module is electrically connected to the second signal processing circuit.
In order to achieve the above object, the present invention further provides a display device, which includes a power board, an 8K display screen, and the main control circuit board as described above;
the first output end of the power panel is connected with the power end of the 8K display screen, the second output end of the power panel is connected with the power end of the main control circuit board, and the signal output end of the main control circuit board is connected with the signal input end of the 8K display screen.
According to the technical scheme, the audio and video signals of 8K or below 8K standard input by the first interface can be received through the first signal processing circuit of the main control circuit board; or a second signal processing circuit of the main control circuit board receives standard audio and video signals of 8K or below 8K input by a second interface; and the video signal in the audio and video signal input by the first interface or the second interface is finally processed by the second signal processing circuit and then output to the 8K display screen of the display device for display, so that the transmission channel of the 8K audio and video signal can be increased, the input audio and video signal does not need to be processed by a logic adapter plate such as logic identification and format conversion and then output to the 8K display screen, and the cost of the display device can be reduced.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a block diagram of a main control circuit board according to an embodiment of the present invention;
FIG. 2 is a block diagram of a first interface and a second interface according to an embodiment of the present invention;
FIG. 3 is a block diagram of another embodiment of a main control circuit board according to the present invention;
FIG. 4 is a block diagram of a main control circuit board according to another embodiment of the present invention;
FIG. 5 is a block diagram of a main control circuit board according to another embodiment of the present invention;
FIG. 6 is a block diagram of a display device according to an embodiment of the present invention.
The reference numbers illustrate:
| 10 | |
20 | |
| 30 | First |
40 | Second |
| 50 | |
60 | |
| 70 | |
80 | |
| 90 | |
100 | Master |
| 200 | |
300 | 8K display screen |
The implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a main control circuit board 100.
Referring to fig. 1, the main control circuit board 100 is electrically connected to an 8K display screen 300 of the display device to output an 8K video signal to the 8K display screen 300 for display. The main control circuit board 100 includes a first interface 10, a second interface 20, a first signal processing circuit 30 and a second signal processing circuit 40; the first interface 10 is connected to the first signal processing circuit 30, and the second interface 20 is connected to the second signal processing circuit 40; and the first signal processing circuit 30 is communicatively connected to the second signal processing circuit 40.
The first interface 10 includes at least one of a digital television interface, a composite synchronous video broadcast signal interface, a serial bus interface and a network interface; the first interface 10 may also include an HDMI2.0 interface, an HDMI 1.4 interface, and so on.
The second interface 20 is a high-definition multimedia interface, which may be an HDMI2.1 interface, an HDMI2.0 interface, and an HDMI 1.4 interface, and the second interface 20 may further include a DP1.4 interface.
The first signal processing circuit 30 may be a circuit formed by a system-on-chip of the display device, for example, an RT2851 chip. The first signal processing circuit 30 is configured to receive the audio and video signals input by the first interface 10, separate audio signals and video signals in the audio and video signals input by the first interface 10, transmit the separated video signals to the second signal processing circuit 40, and output the video signals to the 8K display screen 300 after being processed by the second signal processing circuit 40. The audio/video signal input by the first interface 10 may be an 8K (7680 × 4320) audio/video signal, or an audio/video signal with a resolution of 4K (3840 × 2160) or less than 4K.
The second signal processing circuit 40 may be implemented by a circuit that is formed by a chip supporting 8K video signals, for example, a RT2893 chip. The second signal processing circuit 40 is configured to receive the video signal output by the first signal processing circuit 30, process the received video signal, and output the processed video signal to the 8K display screen 300 for display. The second signal processing circuit 40 is further configured to receive the audio/video signal input by the second interface 20, and output a video signal in the audio/video signal input by the second interface 20 to the 8K display screen 300 for display. The audio/video signal input by the second interface 20 may be an 8K audio/video signal, or an audio/video signal with a resolution of 4K or less than 4K.
For convenience of illustration, the first interface 10 in this embodiment includes a digital television interface, a composite synchronous video broadcast signal interface, a serial bus interface, and a network interface; the second interface includes DP1.4 interface, HDMI2.1 interface, HDMI2.0 interface, and HDMI 1.4 interface as examples.
As shown in fig. 2, when the audio/video signal is input to the first signal processing circuit 30 of the main control circuit board through the first interface 10, for example, when the 8K audio/video signal is input to the first signal processing circuit 30 of the main control circuit board 100 through a digital television interface, a serial bus interface or a network interface, the first signal processing circuit 30 separates the audio signal and the 8K video signal in the audio/video signal, and transmits the separated 8K video signal to the second signal processing circuit 40 through a USB communication protocol, that is, a USB interface, and the second signal processing circuit 40 decodes the 8K video signal in the audio/video signal input from the first interface 10, and outputs the decoded signal to the 8K display screen 300 according to a fixed format for display, so as to present video image information to a user. Meanwhile, the audio signal in the audio/video signal is output to the power amplifier module 60 in the main control circuit board 100 by the first signal processing circuit 30, and then output to the speaker device 70 of the display apparatus by the power amplifier module 60, for example, a speaker plays, and plays the sound corresponding to the video image information to the user. For another example, when the 4K audio/video signal is input to the first signal processing circuit 30 of the main control circuit board through the first interface 10, the first signal processing circuit 30 separates the audio signal and the 4K video signal in the audio/video signal, and packs the separated 4K video signal in the V-BY-ONE format and transmits the packed signal to the second signal processing circuit 40, that is, the 4K video signal is transmitted to the second signal processing circuit 40 through the V-BY-ONE interface, and the second signal processing circuit 40 converts the 4K video signal into an 8K video signal and outputs the signal to the 8K display screen 300 according to a fixed format for displaying, so as to present video image information to the user. Meanwhile, the audio signal in the audio/video signal is output to the power amplifier module in the main control circuit board 100 by the first signal processing circuit 30, and then output to the speaker device of the display apparatus by the power amplifier module, for example, the speaker plays, and transmits the sound corresponding to the video image information to the user.
Optionally, when the audio/video signal is input to the second signal processing circuit 40 of the main control circuit board 100 through the second interface 20, for example, when the 8K audio/video signal is input to the second signal processing circuit 40 of the main control circuit board 100 through the DP1.4 interface or the HDMI2.1 interface, the second signal processing circuit 40 separates the 8K video signal from the audio signal in the audio/video signal input by the second interface 20. Subsequently, the second signal processing circuit 40 decodes the separated 8K video signal, and outputs the decoded signal to the 8K display screen 300 according to the fixed format for displaying, so as to present video image information to the user. Meanwhile, the second signal processing circuit 40 returns the audio signal in the audio/video signal input by the second interface 20 to the first signal processing circuit 30 through the HDMI interface, and the audio signal is output by the first signal processing circuit 30 to the power amplifier module 60 in the main control circuit board 100, and then output by the power amplifier module 60 to the speaker device 70 of the display apparatus, such as a speaker playing. For another example, when the 4K audio/video signal is input to the second signal processing circuit 40 of the main control circuit board 100 through the second interface 20, such as an HDMI2.0 interface or an HDMI 1.4 interface, the second signal processing circuit 40 performs decoding processing on the audio/video signal, separates the audio signal and the 4K video signal in the audio/video signal, converts the separated 4K video signal into an 8K video signal, and outputs the 8K video signal to the 8K display screen 300 according to a fixed format for display, so as to present video image information to a user. Meanwhile, the second signal processing circuit 40 transmits the separated audio signal back to the first signal processing circuit 30 through the HDMI interface, and the audio signal is processed by the first signal processing circuit 30 and then output to the power amplifier module of the main control circuit board 100, and finally the sound is emitted through the speaker device.
That is to say, in this embodiment, the first interface 10 can be used to receive audio and video signals below the 8K or 8K standard, and the second interface 20 can also be used to receive audio and video signals below the 8K or 8K standard, which is not limited to receive the 8K audio and video signals through the DP1.4 interface, and a transmission channel of the 8K audio and video signals is increased. Moreover, the video signal in the audio/video signal input by the first interface 10 or the second interface 20 is finally processed by the second signal processing circuit 40 and then output to the 8K display screen 300 of the display device for display, and the input audio/video signal is not required to be output to the 8K display screen 300 after being processed by the logic adapter board such as logic identification and format conversion, so that the logic adapter board can be saved, and the cost of the display device can be reduced.
According to the technical scheme of the embodiment, the 8K audio/video signals input by the first interface 10 can be received through the first signal processing circuit 30 of the main control circuit board 100; or the 8K audio/video signals input by the second interface 20 are received through the second signal processing circuit 40 of the main control circuit board 100; and the video signal in the 8K audio/video signal input by the first interface 10 or the second interface 20 is finally processed by the second signal processing circuit 40 and then output to the 8K display screen 300 of the display device for display, so that the transmission channel of the 8K audio/video signal can be increased, and the input audio/video signal does not need to be processed by a logic adapter board such as logic identification and format conversion and then output to the 8K display screen 300, so that the cost of the display device can be reduced.
Optionally, referring to fig. 3, in an embodiment, the main control circuit board 100 further includes a power management circuit 50, a first output terminal of the power management circuit 50 is connected to the power terminal of the first signal processing circuit 30, and a second output terminal of the power management circuit 50 is connected to the power terminal of the second signal processing circuit 40.
The power management circuit is used for converting the voltage provided by the power board 200 of the display device into the voltage required by the first signal processing circuit 30, and supplying power to the first signal processing circuit 30. Meanwhile, the voltage provided by the power panel 200 of the display device is converted into the voltage required by the second signal processing circuit 40, so as to supply power to the second signal processing circuit 40. The power management circuit 50 may be implemented by a power chip and a peripheral circuit of the power chip.
Optionally, referring to fig. 4, in an embodiment, the main control circuit board 100 further includes a power amplifier module 60, an output end of the audio signal of the first signal processing circuit 30 is connected to an input end of the power amplifier module 60, and an output end of the power amplifier module 60 is connected to the speaker device 70 of the display apparatus.
In this embodiment, the main control circuit board 100 is provided with a power amplifier module 60, configured to receive the audio signal output by the first signal processing circuit 30, convert the audio signal into an analog audio signal, and output the analog audio signal through a speaker device of the display device, such as a speaker, so as to provide a sound corresponding to the picture information displayed on the 8K display screen 300 for a user.
In an embodiment, referring to fig. 5, the main control circuit board further includes a first memory module 80, and the first memory module 80 is electrically connected to the first signal processing circuit 30.
The first storage module 80 is configured to store the cache data of the first signal processing circuit 30, and optionally, the first storage module 80 is a DDR memory to implement fast storage, reading, and writing.
And the main control circuit board 100 further includes a second storage module 90, and the second storage module 90 is electrically connected to the second signal processing circuit 40.
The second storage module 90 is configured to store the cache data of the second signal processing circuit 40, and optionally, the second storage module 90 is a DDR memory to implement fast storage, reading, and writing.
In order to achieve the above object, the present invention further provides a display device, as shown in fig. 6, the display device includes a power panel 200, an 8K display screen 300, and the main control circuit board 100 as described above; the first output end of the power board 200 is connected to the power end of the 8K display screen 300, the second output end of the power board 200 is connected to the power end of the main control circuit board 100, and the signal output end of the main control circuit board 100 is connected to the signal input end of the 8K display screen 300. The detailed structure of the main control circuit board 100 can refer to the above embodiments, and is not described herein again; it can be understood that, because the main control circuit board 100 is used in the display device of the present invention, the embodiment of the display device of the present invention includes all technical solutions of all embodiments of the main control circuit board 100, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A master control circuit board is used for a display device and is characterized by comprising a first interface, a second interface, a first signal processing circuit and a second signal processing circuit;
the first interface is connected with the first signal processing circuit, and the second interface is connected with the second signal processing circuit; the first signal processing circuit is in communication connection with the second signal processing circuit; wherein the content of the first and second substances,
the first signal processing circuit is used for receiving the audio and video signals input by the first interface and transmitting the 8K video signals in the audio and video signals input by the first interface to the second signal processing circuit;
the second signal processing circuit is used for outputting the 8K video signal to an 8K display screen of the display device for displaying;
the second signal processing circuit is further used for receiving the audio and video signals input by the second interface and outputting the 8K video signals in the audio and video signals input by the second interface to the 8K display screen for display.
2. The master control circuit board of claim 1, wherein the first interface comprises at least one of a digital television interface, a composite synchronous video broadcast signal interface, a serial bus interface, and a network interface; the second interface is a high-definition multimedia interface.
3. The main control circuit board of claim 1, wherein the second signal processing circuit transmits an audio signal in the audio and video signals input by the second interface to the first signal processing circuit through a high-definition multimedia interface.
4. The main control circuit board according to claim 3, wherein the first signal processing circuit transmits an 8K video signal in the audio/video signals input by the first interface to the second signal processing circuit through a USB communication protocol.
5. The main control circuit board of claim 3, wherein the first signal processing circuit transmits a 4K video signal of the audio and video signals input BY the first interface to the second signal processing circuit through a V-BY-ONE interface.
6. The master circuit board of any one of claims 1-5, further comprising a power management circuit, a first output of the power management circuit being connected to a power terminal of the first signal processing circuit, a second output of the power management circuit being connected to a power terminal of the second signal processing circuit.
7. The main control circuit board of claim 6, further comprising a power amplifier module, wherein the audio signal output terminal of the first signal processing circuit is connected to the input terminal of the power amplifier module, and the output terminal of the power amplifier module is connected to the speaker device.
8. The master control circuit board of claim 1, further comprising a first memory module electrically connected to the first signal processing circuit.
9. The master control circuit board of claim 1, further comprising a second memory module electrically connected to the second signal processing circuit.
10. A display device, characterized in that the display device comprises a power panel, an 8K display screen and a main control circuit board according to any one of claims 1 to 9;
the first output end of the power panel is connected with the power end of the 8K display screen, the second output end of the power panel is connected with the power end of the main control circuit board, and the signal output end of the main control circuit board is connected with the signal input end of the 8K display screen.
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| CN201911424661.6A CN111083414B (en) | 2019-12-31 | 2019-12-31 | Main control circuit board and display device |
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| CN201911424661.6A CN111083414B (en) | 2019-12-31 | 2019-12-31 | Main control circuit board and display device |
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