CN115002381A - Signal sending board, display module, signal transmission system and method and display equipment - Google Patents
Signal sending board, display module, signal transmission system and method and display equipment Download PDFInfo
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000013307 optical fiber Substances 0.000 claims abstract description 85
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 13
- 230000011664 signaling Effects 0.000 description 6
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
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Abstract
The invention provides a signal sending board, a display module, a signal transmission system and method and display equipment. The signal transmitting board includes: the main control module is used for generating and sending a low-voltage differential signal; further comprising: the first signal conversion module is connected with the main control module and used for receiving the low-voltage differential signal and converting the low-voltage differential signal into a high-definition multimedia signal; the first optical fiber module is connected with the first signal conversion module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into an optical signal; and the first connecting module is connected with the first optical fiber module and used for connecting the optical signal into the optical fiber cable. The signal transmitting board can realize the high-speed differential transmission of the extremely-low voltage swing amplitude of the high-speed data signal, the display module end does not need to be separately provided with a power supply, the power supply is directly provided for the display module end through the optical fiber cable, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a signal sending board, a display module, a signal transmission system and method and display equipment.
Background
With the vigorous development of the Internet of things advertising industry in China, the split type label display product also enters the field of vision of people.
The traditional split type sign shows that the product is that display module end and signal sending terminal are independent separately, adopt traditional Interface mode between display module end and the signal sending terminal, like HDMI (High Definition Multimedia Interface, High Definition Multimedia) Interface, VGA (Video Graphics Array ) Interface etc. it has two drawbacks: firstly, the display module end and the signal sending end both need independent power supplies; and secondly, the signal transmission length of the HDMI connecting line and the VGA connecting line is limited, and the HDMI connecting line is not suitable for long-distance transmission and is not suitable for complex application and installation scenes.
Disclosure of Invention
The present invention has been made in view of the above problems, and provides a signal transmission panel including: the main control module is used for generating and sending a low-voltage differential signal;
further comprising:
the first signal conversion module is connected with the main control module and used for receiving the low-voltage differential signal and converting the low-voltage differential signal into a high-definition multimedia signal;
the first optical fiber module is connected with the first signal conversion module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into an optical signal;
and the first connecting module is connected with the first optical fiber module and is used for connecting the optical signal into an optical fiber cable.
Optionally, the system further comprises a voltage conversion module, which is connected to the main control module and the first connection module; the main control module is used for converting the 12V direct current voltage signal provided by the main control module into a 40-150V direct current voltage signal and connecting the 40-150V direct current voltage signal into the first connecting module;
the first connecting module is further used for connecting the 40-150V direct current voltage signal into the optical fiber cable.
Optionally, the main control module is connected with the first connection module,
the main control module is also used for providing a low-speed control signal and a direct-current voltage signal lower than 12V; the low-speed control signal and a direct-current voltage signal lower than 12V are connected into the first connecting module;
the first connection module is further used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V into the optical fiber cable.
The embodiment of the present disclosure further provides a display module, including:
the second connecting module is used for connecting an optical fiber cable and connecting the first connecting module of the signal transmitting board through the optical fiber cable so as to receive the optical signal transmitted by the signal transmitting board;
the second optical fiber module is connected with the second connecting module and used for receiving the optical signal and converting the optical signal into a high-definition multimedia signal;
the second signal conversion module is connected with the second optical fiber module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into a low-voltage differential signal;
and the driving module is connected with the second signal conversion module and used for receiving the low-voltage differential signal and using the low-voltage differential signal for display driving.
Optionally, the second connection module is further configured to access a 40-150V dc voltage signal on the first connection module through the optical fiber cable;
the display module further comprises a backlight module connected with the second connecting module and used for connecting the 40-150V direct-current voltage signal to provide a power supply for the display module.
Optionally, the second connection module is further configured to access a low-speed control signal and a dc voltage signal lower than 12V on the first connection module through the optical fiber cable;
the display module further comprises a connecting socket which is connected with the second connecting module and used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V.
The embodiment of the present disclosure further provides a signal transmission system, which includes the signal transmitting board and the display module;
also included are fiber optic cables;
the signal transmitting board is connected with the display module through the optical fiber cable.
Optionally, the first connection module in the signal transmitting board and the second connection module in the display module include Oculink connectors.
The embodiment of the disclosure also provides a display device, which comprises the signal transmission system.
The embodiment of the present disclosure further provides a signal transmission method, including:
generating a low voltage differential signal;
converting the low-voltage differential signal into a high-definition multimedia signal;
converting the high-definition multimedia signal into an optical signal;
and sending the optical signal to a display module through an optical fiber cable.
Optionally, the method further comprises:
generating a 12V direct current voltage signal and converting the 12V direct current voltage signal into a 40-150V direct current voltage signal;
and sending the 40-150V direct current voltage signal to the display module through the optical fiber cable.
The signal transmission method further includes:
generating a low-speed control signal and a direct-current voltage signal lower than 12V;
and sending the low-speed control signal and the direct-current voltage signal lower than 12V to the display module through the optical fiber cable.
The embodiment of the present disclosure further provides a signal transmission method, including:
receiving the optical signal transmitted by the signal transmitting plate through the optical fiber cable;
converting the optical signal into a high-definition multimedia signal;
converting the high-definition multimedia signal into a low-voltage differential signal;
and using the low-voltage differential signal for display driving.
Optionally, the method further comprises:
receiving a 40-150V direct-current voltage signal sent by the signal sending board through the optical fiber cable; the 40-150V direct-current voltage signal is used for lighting a backlight source for display;
the signal transmission method further includes:
and receiving a low-speed control signal and a direct-current voltage signal lower than 12V transmitted by the signal transmitting board through the optical fiber cable.
The invention has the beneficial effects that: the signal transmitting board provided by the invention can realize the high-speed differential transmission of the extremely-low voltage swing of the high-speed data signal, the display module end does not need to be separately provided with a power supply, the power supply is directly provided for the display module end by the optical fiber cable, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
The display module provided by the invention can realize the high-speed differential reception of the extremely-low voltage swing amplitude of the high-speed data signal, does not need to be separately provided with a power supply, is directly provided with the power supply by the optical fiber cable, has the length of 3M, 5M or 10M, and is not limited compared with the traditional technology.
The signal transmission system provided by the invention can realize the ultra-low voltage swing high-speed differential transmission of high-speed data signals, has extremely low noise, has very small power consumption no matter how high the frequency is, and is not easily influenced by common-mode noise in low-voltage differential data transmission; meanwhile, the display module end in the transmission system does not need to be separately provided with a power supply, the power supply is directly provided for the display module end through the optical fiber cable, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
Drawings
FIG. 1 is a functional block diagram of a signaling board in an embodiment of the present disclosure;
FIG. 2 is a schematic block diagram of a display module according to an embodiment of the disclosure;
fig. 3 is a schematic block diagram of a signal transmission system in an embodiment of the disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a signal transmitting board, a display module, a signal transmission system and method, and a display device according to the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
The disclosed embodiment provides a signal transmitting board, as shown in fig. 1, including: and the main control module is used for generating and sending a low-voltage differential signal. Further comprising: the first signal conversion module is connected with the main control module and used for receiving the low-voltage differential signal and converting the low-voltage differential signal into a high-definition multimedia signal; the first optical fiber module is connected with the first signal conversion module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into an optical signal; and the first connecting module is connected with the first optical fiber module and used for connecting the optical signal into the optical fiber cable.
The Low-Voltage Differential Signaling (LVDS) is a Low-power consumption, Low-bit-error-rate, Low-crosstalk and Low-radiation Differential Signaling technology, the transmission technology can reach over 155Mbps, the core of the LVDS technology is to adopt an extremely Low Voltage swing high-speed Differential transmission data, and point-to-point or point-to-multipoint connection can be realized, and a transmission medium of the LVDS technology can be a copper PCB connection line or a balanced cable. Lvds (low Voltage Differential signaling) is a low-amplitude Differential signaling technique. It uses a very low amplitude signal (about 350mV) to transmit data through a pair of differential PCB traces or balanced cables. It can transfer serial data at speeds up to thousands of Mbps. Because the voltage signal amplitude is lower and the constant current source mode is adopted for driving, only extremely low noise is generated, very small power is consumed, and even the power consumption is almost unchanged no matter the frequency is high or low. Furthermore, since LVDS transmits data in a differential manner, it is less susceptible to common mode noise.
In this embodiment, the low voltage differential signal sent by the signal sending board is a high speed data signal required by the display module during displaying.
The signal sending board provided in the embodiment can realize long-distance transmission of low-voltage differential coding signals by taking optical fibers as carriers, and the technical specification of the long-distance optical fiber transmission of the low-voltage differential coding signals supports the standard 8bit or 10bit coding principle, so that the direct-current component balance of optical fiber channel transmission can be met, and the transmission of high-definition multimedia coding signals such as 4K or 8K is compatible; in addition, in this embodiment, the optical signal is transmitted through the optical fiber to realize the transmission of the high-speed data signal, and the signal transmission length is not limited.
Optionally, the main control module is, for example, an android motherboard. The android mainboard is powered by an independent power panel. The first signal conversion module is an encoder capable of converting a Low Voltage Differential Signaling (LVDS) into a high definition multimedia signal (HDMI). The connection between the main control module and the first signal conversion module is realized through a connector (connector). The first optical fiber module is also used for amplifying the optical signal and then coupling the amplified optical signal to the first connecting module; the optical signal is amplified, so that the optical signal can still be received after attenuation loss in the process of transmitting through the optical fiber cable.
Optionally, the signal transmitting board further comprises a voltage conversion module, which is connected with the main control module and the first connection module; the device comprises a first connecting module, a second connecting module, a first switching module and a second switching module, wherein the first connecting module is used for converting a 12V direct current voltage signal provided by the main control module into a 40-150V direct current voltage signal and connecting the 40-150V direct current voltage signal into the first connecting module; the first connecting module is also used for connecting the 40-150V direct-current voltage signal into the optical fiber cable. The 40-150V direct-current voltage signal can be directly sent to a signal receiving end such as a display module through an optical fiber cable, and the 40-150V direct-current voltage signal can be directly used as a power supply of a backlight module in the display module after being received by the signal receiving end such as the display module, so that the display module end does not need to be separately provided with a power supply for power supply.
Optionally, the main control module is connected to the first connection module, and is further configured to provide a low-speed control signal (control signal) and a dc voltage signal lower than 12V; the low-speed control signal and the direct-current voltage signal lower than 12V are connected into the first connecting module; the first connecting module is also used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V into the optical fiber cable.
The DC voltage signal lower than 12V may be used as some DC power source signals, such as VDD, GND, D +, D-, etc., required by the signal receiving end, such as the display module. In this embodiment, the low-speed control signal and the dc voltage signal lower than 12V are directly connected to the first connection module through the printed circuit wiring on the signal transmission board, and then the low-speed control signal and the dc voltage signal lower than 12V can be directly transmitted to the signal receiving end such as the display module through the optical fiber cable, so that the display module end can directly adopt the low-speed control signal and the dc voltage signal lower than 12V, and the display module end is prevented from separately setting the power supply.
Optionally, the first connection module employs an Oculink connector. The highest speed of an Oculink connector channel can reach 10G, and high-speed differential transmission of high-speed data signals through extremely low voltage swing can be realized; and the display module end does not need to be separately provided with a power supply, the power supply is directly provided for the display module end by the optical fiber cable, and the length of the optical fiber cable supports 3M, 5M or 10M.
The signal transmitting board provided in the embodiment can realize the very low voltage swing high-speed differential transmission of high-speed data signals, and the display module end does not need to be separately provided with a power supply, the power supply is directly provided for the display module end by the optical fiber cable, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
The embodiment of the present disclosure further provides a display module, as shown in fig. 2, including: the second connecting module is used for connecting the optical fiber cable and is connected with the first connecting module of the signal transmitting board through the optical fiber cable so as to receive the optical signal transmitted by the signal transmitting board; the second optical fiber module is connected with the second connecting module and used for receiving the optical signal and converting the optical signal into a high-definition multimedia signal; the second signal conversion module is connected with the second optical fiber module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into a low-voltage differential signal; and the driving module is connected with the second signal conversion module and used for receiving the low-voltage differential signal and using the low-voltage differential signal for display driving.
The high-definition multimedia signals are electric signals. The second optical fiber module is also used for amplifying the high-definition multimedia signals. The second signal conversion module is a decoder capable of converting a high definition multimedia signal (HDMI) into a Low Voltage Differential Signal (LVDS). A driving module such as a Timing Controller (TCON) in the display module; the second signal conversion module is connected with the driving module through a connector (connector).
In this embodiment, the low voltage differential signal received by the display module is a high speed data signal.
Optionally, the second connection module is further configured to access a 40-150V dc voltage signal on the first connection module through an optical fiber cable; the display module further comprises a backlight module connected with the second connecting module and used for accessing 40-150V direct-current voltage signals to provide power for the display module. Namely, the display module end does not need to be separately provided with a backlight module power supply, and the signal sending board directly provides the backlight module power supply for the display module.
Optionally, the second connection module is further used for accessing a low-speed control signal (control signal) and a direct-current voltage signal lower than 12V on the first connection module through an optical fiber cable; the display module further comprises a connecting socket (connector) which is connected with the second connecting module and used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V. Therefore, the display module can directly adopt the low-speed control signal to control the display of the display module, and the display module can directly adopt the direct-current voltage signal lower than 12V to supply power to corresponding circuits (such as a pixel driving circuit and the like) in the display module, so that the display module is prevented from being independently provided with a power supply.
Optionally, the second connection module employs an Oculink connector. The highest speed of an Oculink connector channel can reach 10G, and high-speed differential transmission of high-speed data signals through extremely low voltage swing can be realized; and the display module end does not need to be separately provided with a power supply, and the optical fiber cable directly provides the power supply for the display module end.
The display module provided in the embodiment can realize the very low voltage swing high-speed differential reception of the high-speed data signal, does not need to be separately provided with a power supply, is directly provided with the power supply by the optical fiber cable, and has the length of 3M, 5M or 10M, so that the signal transmission length is not limited compared with the traditional technology.
The embodiment of the present disclosure further provides a signal transmission system, as shown in fig. 3, including the signal transmitting board and the display module in the above embodiment; also included are fiber optic cables; the signal transmitting board is connected with the display module through an optical fiber cable.
Optionally, in this embodiment, the first connection module in the signal transmitting board and the second connection module in the display module include an Oculink connector.
The signal transmission system provided in the embodiment can realize the ultra-low voltage swing high-speed differential transmission of high-speed data signals, has extremely low noise, has very small power consumption no matter how high the frequency is, and is not easily influenced by common-mode noise in low-voltage differential data transmission; meanwhile, the display module end in the transmission system does not need to be separately provided with a power supply, the optical fiber cable directly provides the power supply for the display module end, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
The embodiment of the present disclosure further provides a display device, which includes the signal transmission system in the above embodiment.
By adopting the signal transmission system in the embodiment, the high-speed differential transmission with extremely low voltage swing of the high-speed data signal can be realized, the noise is extremely low, the power consumption is very small no matter the frequency is high or low, and the low-voltage differential data transmission is not easily influenced by common-mode noise.
The display device provided by the invention can be any product or component with a display function, such as an LCD panel, an LCD television, an LCD billboard, a display, a mobile phone, a navigator and the like.
The embodiment of the present disclosure further provides a signal transmission method, including: generating a low voltage differential signal; converting the low-voltage differential signal into a high-definition multimedia signal; converting the high-definition multimedia signal into an optical signal; and transmitting the optical signal to the display module through the optical fiber cable.
Optionally, the signal transmission method further includes: generating a 12V direct current voltage signal and converting the 12V direct current voltage signal into a 40-150V direct current voltage signal; and sending the 40-150V direct-current voltage signal to the display module through the optical fiber cable. The signal transmission method further includes: generating a low-speed control signal and a direct-current voltage signal lower than 12V; and sending the low-speed control signal and the direct-current voltage signal lower than 12V to the display module through the optical fiber cable.
The signal transmission method provided in the embodiment of the disclosure can realize the very low voltage swing high-speed differential transmission of the high-speed data signal, and the signal receiving end does not need to be separately provided with a power supply, and the optical fiber cable directly provides the power supply for the signal receiving end, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
The embodiment of the present disclosure further provides a signal transmission method, including: receiving the optical signal sent by the signal sending board through the optical fiber cable; converting the optical signal into a high-definition multimedia signal; converting the high-definition multimedia signal into a low-voltage differential signal; the low voltage differential signal is used for display driving.
Optionally, the signal transmission method further includes: receiving a 40-150V direct-current voltage signal sent by a signal sending board through an optical fiber cable; the 40-150V direct current voltage signal is used for lighting a backlight source for display; the signal transmission method further includes: and receiving the low-speed control signal and the direct-current voltage signal lower than 12V transmitted by the signal transmitting board through the optical fiber cable.
The signal transmission method provided by the embodiment of the disclosure can realize the very low voltage swing high-speed differential reception of the high-speed data signal, the signal receiving end does not need to be separately provided with a power supply for power supply, the signal receiving end is directly provided with the power supply by the optical fiber cable, the length of the optical fiber cable supports 3M, 5M or 10M, and the signal transmission length is not limited compared with the traditional technology.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (13)
1. A signal transmitting panel, comprising: the main control module is used for generating and sending a low-voltage differential signal;
it is characterized by also comprising:
the first signal conversion module is connected with the main control module and used for receiving the low-voltage differential signal and converting the low-voltage differential signal into a high-definition multimedia signal;
the first optical fiber module is connected with the first signal conversion module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into an optical signal;
and the first connecting module is connected with the first optical fiber module and is used for connecting the optical signal into an optical fiber cable.
2. The signal transmitting board according to claim 1, further comprising a voltage conversion module connecting the main control module and the first connection module; the main control module is used for converting the 12V direct current voltage signal provided by the main control module into a 40-150V direct current voltage signal and connecting the 40-150V direct current voltage signal into the first connecting module;
the first connecting module is further used for connecting the 40-150V direct-current voltage signal into the optical fiber cable.
3. The signal transmitting board according to claim 2, wherein the main control module is connected to the first connection module,
the main control module is also used for providing a low-speed control signal and a direct-current voltage signal lower than 12V; the low-speed control signal and the direct-current voltage signal lower than 12V are connected into the first connecting module;
the first connection module is further used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V into the optical fiber cable.
4. A display module, comprising:
the second connecting module is used for connecting an optical fiber cable and connecting the first connecting module of the signal transmitting board through the optical fiber cable so as to receive the optical signal transmitted by the signal transmitting board;
the second optical fiber module is connected with the second connecting module and used for receiving the optical signal and converting the optical signal into a high-definition multimedia signal;
the second signal conversion module is connected with the second optical fiber module and used for receiving the high-definition multimedia signal and converting the high-definition multimedia signal into a low-voltage differential signal;
and the driving module is connected with the second signal conversion module and used for receiving the low-voltage differential signal and using the low-voltage differential signal for display driving.
5. The display module assembly of claim 4, wherein the second connection module is further configured to access 40-150V DC voltage signals on the first connection module through the optical fiber cable;
the display module further comprises a backlight module connected with the second connecting module and used for connecting the 40-150V direct-current voltage signal to provide a power supply for the display module.
6. The display module assembly according to claim 5, wherein the second connection module is further configured to access a low speed control signal and a DC voltage signal lower than 12V on the first connection module through the optical fiber cable;
the display module further comprises a connecting socket which is connected with the second connecting module and used for connecting the low-speed control signal and the direct-current voltage signal lower than 12V.
7. A signal transmission system, comprising the signal transmitting board of any one of claims 1 to 3 and the display module of any one of claims 4 to 6;
also included are fiber optic cables;
the signal transmitting board is connected with the display module through the optical fiber cable.
8. The signal transmission system according to claim 7, wherein the first connection module in the signal transmission board and the second connection module in the display module comprise Oculink connectors.
9. A display device characterized by comprising a signal transmission system according to any one of claims 7 to 8.
10. A method of signal transmission, comprising:
generating a low voltage differential signal;
converting the low-voltage differential signal into a high-definition multimedia signal;
converting the high-definition multimedia signal into an optical signal;
and sending the optical signal to a display module through an optical fiber cable.
11. The signal transmission method according to claim 10, further comprising:
generating a 12V direct current voltage signal and converting the 12V direct current voltage signal into a 40-150V direct current voltage signal;
and sending the 40-150V direct current voltage signal to the display module through the optical fiber cable.
The signal transmission method further includes:
generating a low-speed control signal and a direct-current voltage signal lower than 12V;
and sending the low-speed control signal and the direct-current voltage signal lower than 12V to the display module through the optical fiber cable.
12. A signal transmission method, comprising:
receiving the optical signal sent by the signal sending board through the optical fiber cable;
converting the optical signal into a high-definition multimedia signal;
converting the high-definition multimedia signal into a low-voltage differential signal;
and using the low-voltage differential signal for display driving.
13. The signal transmission method according to claim 12, further comprising:
receiving a 40-150V direct-current voltage signal sent by the signal sending board through the optical fiber cable; the 40-150V direct-current voltage signal is used for lighting a backlight source for display;
the signal transmission method further includes:
and receiving a low-speed control signal and a direct-current voltage signal lower than 12V transmitted by the signal transmitting board through the optical fiber cable.
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| CN202334778U (en) * | 2011-12-12 | 2012-07-11 | 海能电子(深圳)有限公司 | High-definition multimedia interface (HDMI) optical fiber transmission device |
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| CN111479147A (en) * | 2020-04-15 | 2020-07-31 | 康佳集团股份有限公司 | Split television control system and television |
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