CN112995751A - Data transmission method and system - Google Patents
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- CN112995751A CN112995751A CN201911309314.9A CN201911309314A CN112995751A CN 112995751 A CN112995751 A CN 112995751A CN 201911309314 A CN201911309314 A CN 201911309314A CN 112995751 A CN112995751 A CN 112995751A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 239000000835 fiber Substances 0.000 claims description 11
- 238000013024 troubleshooting Methods 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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Abstract
The embodiment of the invention relates to a data transmission method and a data transmission system, wherein the data transmission method is suitable for a video processor, the video processor is electrically connected with a display screen controller, the display screen controller is electrically connected with at least one display control card, and the at least one display control card is used for carrying a display screen; the data transmission method includes, for example: receiving a target video source output by an upper computer; coding the target video source to obtain a coded video source; and outputting the coded video source to the display screen controller through an optical fiber interface. The invention can realize the remote transmission of the video processor and the display screen controller.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a data transmission method and a data transmission system.
Background
In the LED display screen control system, a video processor and a display screen controller are connected through an HDMI interface or a DVI interface, however, the transmission distance of video transmission lines of the interfaces is very short, when the distance between the video processor and the display screen controller is far, the video transmission lines cannot be adopted to transmit video sources, for example, in most rental sites, the display screen controller is usually placed behind the LED display screen, the video processor is placed in a control room, the control room and the LED display screen have a distance of tens of meters, and the distance between the video transmission lines and the LED display screen cannot be used for transmitting the video sources.
In the prior art, the video processor and the display screen controller are connected through the adapter for converting the HDMI/DVI into the optical fiber to realize remote transmission, however, the adapter has higher price, and two adapters need to be added in the whole set of LED display screen control system, so that the system stability is reduced, and the cost is increased.
Disclosure of Invention
Therefore, the embodiment of the invention discloses a data transmission method and a data transmission system, which can avoid the defects of the prior related art and realize the remote transmission of a video processor and a display screen controller.
The embodiment of the invention particularly discloses a data transmission method which is suitable for a video processor, wherein the video processor is electrically connected with a display screen controller, the display screen controller is electrically connected with at least one display control card, and the at least one display control card is used for carrying a display screen; the data transmission method comprises the following steps: receiving a target video source output by an upper computer; coding the target video source to obtain a coded video source; and outputting the coded video source to the display screen controller through an optical fiber interface.
In the prior art, the video processor and the display screen controller are connected through the adapter for converting the HDMI/DVI into the optical fiber to realize remote transmission, however, the adapter has higher price, and two adapters need to be added in the whole set of LED display screen control system, so that the system stability is reduced, and the cost is increased. The data transmission method disclosed by the embodiment of the invention is suitable for a video processor, can realize the remote transmission of the video processor and a display screen controller by outputting the received target video source to the display screen controller through an optical fiber interface after encoding, avoids the defects of the prior related art, avoids the use of an adapter, reduces the cost, improves the stability of a system, simplifies field wiring and is convenient for troubleshooting.
In an embodiment of the present invention, the encoding the target video source to obtain an encoded video source includes: converting the data width of the target video source from 64 bits to 66 bits to obtain the coded video source; wherein the target video source comprises: a line sync signal, a field sync signal, a data enable signal, and image data.
In one embodiment of the invention, the encoded video source comprises blocks of a first type of data and blocks of a second type of data; the first type data block comprises a first type identification and the image data; the second type data block includes a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes the second type identification, a data enable signal identification, and the data enable signal.
In an embodiment of the present invention, the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field sync signal identifier, and the last 56 bits are the field sync signal; the first 2 bits of the 66 bits corresponding to the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier and the last 56 bits are the data enable signal.
In one embodiment of the present invention, the target video source further comprises: a resolution of the display screen; the second type data block of the encoded video source further includes a fourth subtype data block, where the first 2 bits of the 66 bits corresponding to the fourth subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the resolution identifier, and the last 56 bits are the resolution.
Furthermore, the data transmission method disclosed by the embodiment of the invention is suitable for a display screen controller, wherein the display screen controller is electrically connected with a video processor and at least one display control card, and the at least one display control card carries a display screen; the data transmission method comprises the following steps: receiving an encoded video source input by the video processor via a fiber optic interface; decoding the coded video source to obtain a target video source; and caching the image data in the target video source and outputting the image data to the at least one display control card.
In the prior art, the video processor and the display screen controller are connected through the adapter for converting the HDMI/DVI into the optical fiber to realize remote transmission, however, the adapter has higher price, and two adapters need to be added in the whole set of LED display screen control system, so that the system stability is reduced, and the cost is increased. The data transmission method disclosed by the embodiment of the invention is suitable for a display screen controller, receives the coded video source through the optical fiber interface, caches the image data after decoding processing, and outputs the image data to at least one display control card, so that the remote transmission of the video processor and the display screen controller can be realized, the defects of the prior related art are avoided, the use of an adapter is avoided, the cost is reduced, the stability of a system is improved, the field wiring is simplified, and the troubleshooting is convenient.
In an embodiment of the present invention, the decoding the encoded video source to obtain a target video source includes: and converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source, wherein the target video source comprises image data, a line synchronization signal, a field synchronization signal and a data enable signal.
In one embodiment of the invention, the encoded video source comprises blocks of a first type of data and blocks of a second type of data; the first type data block comprises a first type identification and the image data; the second type data block includes a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes the second type identification, a data enable signal identification, and the data enable signal.
In an embodiment of the present invention, the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field sync signal identifier, and the last 56 bits are the field sync signal; the first 2 bits of the 66 bits of the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier and the last 56 bits are the data enable signal.
Furthermore, a data transmission system disclosed in an embodiment of the present invention includes: an upper computer; the video processor is connected with the upper computer and comprises a first optical fiber interface; the display screen controller comprises a second optical fiber interface, and the first optical fiber interface of the video processor is connected with the second optical fiber interface of the display screen controller through an optical fiber line; wherein the video processor is configured to perform any one of the data transmission methods as described above.
In an embodiment of the present invention, the aforementioned data transmission system further includes: the display control card is connected with the display screen controller; wherein the display screen controller is to: receiving the encoded video source input by the video processor via the second fiber optic interface; converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source; and caching the image data in the target video source and outputting the image data to the at least one display control card.
As can be seen from the above, the embodiments of the present invention can achieve one or more of the following advantages: the remote transmission of the video processor and the display screen controller can be realized, the defects of the prior related art are avoided, the use of an adapter is avoided, the cost is reduced, the stability of the system is improved, the field wiring is simplified, and the troubleshooting is convenient.
Other aspects and features of the present invention will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a data transmission system according to a first embodiment of the present invention;
FIG. 2 is a timing diagram of a target video source involved in the data transmission system according to the first embodiment of the present invention;
fig. 3 is another schematic structural diagram of a data transmission system according to the first embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a data transmission method according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating steps of a data transmission method according to a third embodiment of the present invention.
[ brief description of the drawings ]
S11-S13, S21-S23: a data transmission method step;
10: a data transmission system; 11: an upper computer; 12: a video processor; 121: a first fiber optic interface; 13: a display screen controller; 131: a second optical fiber interface; 14: and displaying the control card.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be described in connection with embodiments with reference to the drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. 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 the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the division of the embodiments of the present invention is only for convenience of description and should not be construed as a limitation, and features of various embodiments may be combined and referred to each other without contradiction.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, an embodiment of the invention discloses a data transmission system. As shown in fig. 1, the data transmission system 10 includes, for example, an upper computer 11, a video processor 12, and a display screen controller 13.
The video processor 12 is connected to the upper computer 11, and for example, includes a first optical fiber interface 121, the display screen controller 13 includes a second optical fiber interface 131, and the first optical fiber interface 121 of the video processor 12 is connected to the second optical fiber interface 131 of the display screen controller 13 through an optical fiber cable. The first fiber optic interface 121 and the second fiber optic interface 131 are mentioned as being, for example, a 10G fiber optic interface, a 20G fiber optic interface, or a 40G fiber optic interface.
The host computer 11 is, for example, a personal computer, a hand-held or portable device, a tablet device, a multiprocessor system, a microprocessor-based system, an editable consumer electronics device, a network PC, a minicomputer, a mainframe computer, a distributed computing environment that includes any of the above systems or devices, or the like.
The target video sources mentioned include, for example: a line sync signal (HS), a field sync signal (VS), a DATA enable signal (DE), and image DATA (DATA). Timing diagram of the target video source referring to fig. 2, the timing of the target video source is the standard VESA timing.
Further, the target video source further includes, for example, the resolution of the display screen, so that a cumbersome operation of the display screen controller 13 reading back the resolution from the display screen can be avoided, and when the upper computer 11 needs to acquire the resolution of the display screen, the display screen controller 13 can directly upload the resolution stored in the register.
Further, the video processor 12 is configured to perform encoding processing on the target video source to obtain an encoded video source, and specifically includes: and converting the data width of the target video source from 64 bits to 66 bits to obtain the coded video source. Specifically, the video processor 12 performs encoding processing on a target video source according to a specified encoding protocol, for example, a 64B/66B encoding protocol, to obtain an encoded video source, wherein a 64-bit target video source is encoded into a 66-bit data block based on the 64B/66B encoding protocol for transmission, and the first two bits of the 66-bit data block include two types of type identifiers, for example: a first type identifier "10" and a second type identifier "01", wherein the first type identifier "10" indicates that the following 64 bits are both image data, the second type identifier "01" indicates that the following 64 bits are type field and custom data, wherein 8 bits next to the second type identifier "01" are, for example, type field, i.e. identifier of each custom data, and the following 56 bits are custom data, which includes, for example, a line sync signal, a field sync signal, and a data enable signal, and further, may include resolution of the display screen.
Further, the mentioned encoded video source for example comprises a first type DATA block and a second type DATA block, the mentioned first type DATA block for example comprises a first type identifier and image DATA, for example, the first 2 bits of the 66 bits corresponding to the mentioned first type DATA block are the first type identifier, for example, "10", and the last 64 bits are the image DATA (DATA). The mentioned second type data blocks comprise for example first subtype data blocks, second subtype data blocks and third subtype data blocks, wherein the mentioned first subtype data blocks comprise for example a second type identification, a line synchronization signal identification and the line synchronization signal, the mentioned second subtype data blocks comprise for example the second type identification, a field synchronization signal identification and the field synchronization signal, and the mentioned third subtype data blocks comprise the second type identification, a data enable signal identification and the data enable signal. For example, the first 2 bits of the 66 bits corresponding to the mentioned first subtype data block are the second type identifier, such as "01", the first 8 bits of the last 64 bits are the line synchronization signal identifier, the last 56 bits are the line synchronization signal (HS), the first 2 bits of the 66 bits corresponding to the mentioned second subtype data block are the second type identifier, such as "01", the first 8 bits of the last 64 bits are the field synchronization signal identifier, the last 56 bits are the field synchronization signal (VS), the first 2 bits of the 66 bits of the mentioned third subtype data block are the second type identifier, such as "01", the first 8 bits of the last 64 bits are the data enable signal identifier, and the last 56 bits are the data enable signal (DE). For example, the rising edge or the falling edge of each of the horizontal sync signal, the vertical sync signal, and the data enable signal may correspond to different flags, and the rising edge or the falling edge of the horizontal sync signal may be indicated when the first 8 bits of the last 64 bits corresponding to the vertical sync signal are 0xAA, the falling edge of the vertical sync signal is indicated when 0xBB, the rising edge of the horizontal sync signal is indicated when the middle 8 bits of the last 64 bits corresponding to the horizontal sync signal are 0x77, and the falling edge of the horizontal sync signal is indicated when 0x 88.
Furthermore, the mentioned second type data block also includes a fourth subtype data block, the first 2 bits of the 66 bits corresponding to the fourth subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the resolution identifier, and the last 56 bits are the resolution.
The display screen controller 13 is, for example, a transmitting card in an LED display screen control system, and includes, in addition to the second optical fiber interface 131, devices such as a programmable logic device, a memory and a microcontroller connected to the programmable logic device, and a network interface connected to the programmable logic device, where the memory is, for example, a volatile memory SDRAM, the programmable logic device is, for example, an FPGA, the microcontroller is, for example, an MCU, and the network interface is, for example, an RJ 45.
Further, as shown in fig. 3, the data transmission system 10 further includes at least one display control card 14 connected to the display screen controller 13, for example. Fig. 3 only illustrates one display control card 14, but the invention is not limited thereto. The display control card 14 is used for an onboard display screen, such as an LED display screen.
The display screen controller 13 is configured to execute a data transmission method, for example, including: receiving the encoded video source input by the video processor 12 via the second optical fiber interface 131; decoding the coded video source to obtain a target video source; and buffering the image data in the target video source and outputting the image data to the display control card 14.
Further, the display screen controller 13 is configured to decode the encoded video source to obtain a target video source, and specifically includes: and converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source. Specifically, the display screen controller 13 decodes the encoded video source according to a specified decoding protocol, for example, a 64B/66B decoding protocol corresponding to the 64B/66B encoding protocol, to obtain a target video source, where the display screen controller 13, for example, first two bits of the transmitted 66-bit data block are firstly analyzed to determine the type of the 66-bit data block, the first two bits are analyzed by the display screen controller 13 to be a first type identifier, for example, "10", and directly reading "10" indicates that the following 64 bits acquire image data. The display screen controller 13 analyzes the first two bits as the second type identifier, for example, "01", and further analyzes 8 bits next to the second type identifier, for example, "01", to determine the custom data type, and further analyzes the following 56 bits according to the determined custom data type to obtain the custom data.
Further, the display screen controller 13 is configured to buffer image data in the target video source and output the buffered image data to the display control card 14, and specifically includes: the display screen controller 13 processes and stores the image data in the memory based on, for example, the line synchronization signal, the field synchronization signal, and the data enable signal obtained by decoding, and then outputs the image data to the display control card 14. In addition, when the target video source has the resolution of the display screen, the resolution is cached in the register so as to be used for directly outputting the cached resolution to the upper computer 11 in response to a resolution obtaining instruction of the upper computer 11 subsequently.
The display control card 14 is, for example, a receiving card (scan card) in an LED display screen control system, and includes, for example, a network port, a programmable logic device connected to the network port, a microcontroller and a memory connected to the programmable logic device, and a pin header connector connected to the programmable logic device. Wherein the network port is for example RJ45, the memory is for example volatile memory SDRAM, the programmable logic device is for example FPGA, and the microcontroller is for example MCU. The pin header connector is used for connecting the LED display screen.
In summary, in the data transmission system disclosed in the embodiment of the present invention, the video processor encodes the target video source and outputs the encoded target video source to the second optical fiber interface of the display screen controller via the first optical fiber interface, so as to implement remote transmission between the video processor and the display screen controller, avoid the disadvantages of the related art, avoid the use of an adapter, reduce the cost, improve the stability of the system, simplify the field wiring, and facilitate troubleshooting.
[ second embodiment ]
Referring to fig. 4, a data transmission method disclosed in the second embodiment of the present invention is applicable to a video processor, the video processor is electrically connected to a display screen controller, the display screen controller is electrically connected to at least one display control card, and the at least one display control card is used for loading a display screen. As shown in fig. 4, the data transmission method includes, for example, steps S11 to S13.
Step S11: receiving a target video source output by an upper computer;
step S12: coding the target video source to obtain a coded video source;
step S13: and outputting the coded video source to the display screen controller through an optical fiber interface.
Specifically, the host computer mentioned in step S11 is, for example, a personal computer, a hand-held or portable device, a tablet device, a multiprocessor system, a microprocessor-based system, an editable consumer electronics device, a network PC, a minicomputer, a mainframe computer, a distributed computing environment including any of the above systems or devices, or the like. The target video sources mentioned include, for example: a line sync signal, a field sync signal, a data enable signal, and image data. Further, the mentioned target video source for example also includes the resolution of the display screen.
Step S12 includes, for example: and converting the data width of the target video source from 64 bits to 66 bits to obtain the coded video source. Wherein, the mentioned encoded video source comprises, for example, a first type data block and a second type data block; the first type data block includes, for example, a first type identifier and the image data; the second type data block includes, for example, a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes, for example, a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes, for example, the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes, for example, the second type identification, a data enable signal identification, and the data enable signal.
Further, the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field synchronization signal identifier, and the last 56 bits are the field synchronization signal; the first 2 bits of the 66 bits of the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier, and the last 56 bits are the data enable signal.
Further, the mentioned second type data block of the encoded video source for example further includes a fourth subtype data block, where the first 2 bits of the 66 bits of the fourth subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the resolution identifier, and the last 56 bits are the resolution.
The optical fiber interface mentioned in step S13 is, for example, a 10G optical fiber interface, a 20G optical fiber interface or a 40G optical fiber interface. The mentioned display screen controller is, for example, a transmitting card in an LED display screen control system, and in addition to the second optical fiber interface 131, includes, for example, a programmable logic device, a memory and a microcontroller connected to the programmable logic device, and a network interface connected to the programmable logic device, where the memory is, for example, a volatile memory SDRAM, the programmable logic device is, for example, an FPGA, the microcontroller is, for example, an MCU, and the network interface is, for example, an RJ 45.
It should be noted that, for example, the data transmission method disclosed in this embodiment is executed in the video processor 12 of the data transmission system 10 disclosed in the first embodiment, and for a specific description of the data transmission method, reference may be made to the related description of the first embodiment, and for brevity, no further description is given here.
In summary, the data transmission method disclosed in the embodiments of the present invention is suitable for a video processor, and the received target video source is encoded and then output to a display screen controller via an optical fiber interface, so that remote transmission between the video processor and the display screen controller can be realized, the disadvantages of the related art can be avoided, the use of an adapter can be avoided, the cost can be reduced, the stability of the system can be improved, the field wiring can be simplified, and the troubleshooting can be facilitated.
[ third embodiment ]
Referring to fig. 5, a data transmission method disclosed in the third embodiment of the present invention is applicable to a display screen controller, where the display screen controller is electrically connected to a video processor and at least one display control card, and the at least one display control card carries a display screen. As shown in fig. 5, the data transmission method includes, for example, steps S21 to S23.
Step S21: receiving an encoded video source input by the video processor via a fiber optic interface;
step S22: decoding the coded video source to obtain a target video source;
step S23: and caching the image data in the target video source and outputting the image data to the at least one display control card.
Specifically, the optical fiber interface mentioned in step S21 is, for example, a 10G optical fiber interface, a 20G optical fiber interface, or a 40G optical fiber interface. The data width of the mentioned encoded video source is, for example, 66 bits, and the mentioned encoded video source comprises, for example, a first type data block and a second type data block; the first type data block includes, for example, a first type identifier and the image data; the second type data block includes, for example, a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes, for example, a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes, for example, the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes, for example, the second type identification, a data enable signal identification, and the data enable signal. Wherein, the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field synchronization signal identifier, and the last 56 bits are the field synchronization signal; the first 2 bits of the 66 bits of the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier, and the last 56 bits are the data enable signal.
Step S22 includes, for example: and converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source, wherein the mentioned target video source comprises the image data, the line synchronization signal, the field synchronization signal and the data enable signal. Further, the target video source also includes, for example, the resolution of the display screen.
The display control card mentioned in step S23 is, for example, a receiving card (scan card) in the LED display screen control system, and includes, for example, a network port, a programmable logic device connected to the network port, a microcontroller and a memory connected to the programmable logic device, a pin header connector connected to the programmable logic device, and the like. Wherein the network port is for example RJ45, the memory is for example volatile memory SDRAM, the programmable logic device is for example FPGA, the microcontroller is for example MCU, and the pin header connector is used for connecting the display screen.
It should be noted that the data transmission method disclosed in this embodiment is implemented in the display screen controller 13 of the data transmission system 10 disclosed in the first embodiment, for example, and for specific description of the data transmission method, reference may be made to the related description of the first embodiment, and for brevity, no further description is provided here.
In summary, the data transmission method disclosed in the embodiments of the present invention is suitable for a display screen controller, receives a coded video source through an optical fiber interface, performs decoding processing, and then caches and outputs image data to a display control card, so that remote transmission between a video processor and the display screen controller can be realized, disadvantages of the related art can be avoided, the use of an adapter is avoided, the cost is reduced, the stability of a system is improved, field wiring is simplified, and troubleshooting is facilitated.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A data transmission method is suitable for a video processor, the video processor is electrically connected with a display screen controller, the display screen controller is electrically connected with at least one display control card, and the at least one display control card is used for loading a display screen; the data transmission method is characterized by comprising the following steps:
receiving a target video source output by an upper computer;
coding the target video source to obtain a coded video source;
and outputting the coded video source to the display screen controller through an optical fiber interface.
2. The data transmission method according to claim 1, wherein the encoding the target video source to obtain an encoded video source comprises:
converting the data width of the target video source from 64 bits to 66 bits to obtain the coded video source; wherein the target video source comprises: a line sync signal, a field sync signal, a data enable signal, and image data.
3. The data transmission method of claim 2, wherein the encoded video source comprises a first type of data block and a second type of data block; the first type data block comprises a first type identification and the image data; the second type data block includes a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes the second type identification, a data enable signal identification, and the data enable signal.
4. The data transmission method according to claim 3, wherein the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field sync signal identifier, and the last 56 bits are the field sync signal; the first 2 bits of the 66 bits corresponding to the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier and the last 56 bits are the data enable signal.
5. The data transmission method of claim 4, the target video source further comprising: a resolution of the display screen; the second type data block of the encoded video source further includes a fourth subtype data block, where the first 2 bits of the 66 bits corresponding to the fourth subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the resolution identifier, and the last 56 bits are the resolution.
6. A data transmission method is suitable for a display screen controller, wherein the display screen controller is electrically connected with a video processor and at least one display control card, and the at least one display control card carries a display screen; the data transmission method is characterized by comprising the following steps:
receiving an encoded video source input by the video processor via a fiber optic interface;
decoding the coded video source to obtain a target video source;
and caching the image data in the target video source and outputting the image data to the at least one display control card.
7. The data transmission method according to claim 6, wherein the decoding the encoded video source to obtain a target video source comprises:
and converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source, wherein the target video source comprises image data, a line synchronization signal, a field synchronization signal and a data enable signal.
8. The data transmission method of claim 7, wherein the encoded video source comprises a first type of data block and a second type of data block; the first type data block comprises a first type identification and the image data; the second type data block includes a first subtype data block, a second subtype data block, and a third subtype data block, wherein the first subtype data block includes a second type identification, a line synchronization signal identification, and the line synchronization signal, the second subtype data block includes the second type identification, a field synchronization signal identification, and the field synchronization signal, and the third subtype data block includes the second type identification, a data enable signal identification, and the data enable signal.
9. The data transmission method according to claim 8, wherein the first 2 bits of the 66 bits corresponding to the first type data block are the first type identifier, and the last 64 bits are the image data; the first 2 bits of the 66 bits corresponding to the first subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the line synchronization signal identifier, and the last 56 bits are the line synchronization signal; the first 2 bits of the 66 bits corresponding to the second subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the field sync signal identifier, and the last 56 bits are the field sync signal; the first 2 bits of the 66 bits corresponding to the third subtype data block are the second type identifier, the first 8 bits of the last 64 bits are the data enable signal identifier and the last 56 bits are the data enable signal.
10. A data transmission system, comprising:
an upper computer;
the video processor is connected with the upper computer and comprises a first optical fiber interface;
the display screen controller comprises a second optical fiber interface, and the first optical fiber interface of the video processor is connected with the second optical fiber interface of the display screen controller through an optical fiber line;
wherein the video processor is configured to perform the data transmission method according to any one of claims 1 to 5.
11. The data transmission system of claim 10, further comprising: the display control card is connected with the display screen controller;
wherein the display screen controller is to:
receiving the encoded video source input by the video processor via the second fiber optic interface;
converting the data width of the coded video source from 66 bits to 64 bits to obtain the target video source; and
and caching the image data in the target video source and outputting the image data to the at least one display control card.
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