CN204967957U - Video input expansion card and LED display control system - Google Patents
Video input expansion card and LED display control system Download PDFInfo
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- CN204967957U CN204967957U CN201520759210.9U CN201520759210U CN204967957U CN 204967957 U CN204967957 U CN 204967957U CN 201520759210 U CN201520759210 U CN 201520759210U CN 204967957 U CN204967957 U CN 204967957U
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Abstract
The utility model relates to a video input expansion card is suitable for and connects the LED asynchronous control ware that is used for the drive control LED lamp plate and include: simulation video input interface, simulation video decoding chip is connected through first clock signal simulation video input interface just has a video data parallel output interface, the digital video input interface, and digital video decoder chips, through the second signal line connection the digital video input interface just has the second video data parallel output interface. The utility model discloses still provide to adopt the LED display control system of video input expansion card. The utility model provides a video input expansion card, it makes the LED asynchronous control utensil have the video input function, can support to simulate video and digital video input, in addition, because system integration is high, matching problem, reduction equipment quantity and connecting wire quantity, keep -It -Simple -Control, improvement user experience between traditional video processing equipment and the controller can be solved to it.
Description
Technical field
The utility model relates to technical field of LED display, particularly a kind of video input expansion card and a kind of LED display control program.
Background technology
LED (LightEmittingDiode, light-emitting diode) display screen system, as novel Display Technique, is accepted by market gradually with its energy-saving and environmental protection, the advantage such as highlighted, thus is widely used in the fields such as city medium, urban transportation.The core control part of LED display screen system is LED display control program, and it is divided into LED and shows synchronous control system and LED display asynchronous control system.Wherein, LED shows asynchronous control system and forms primarily of LED nonsynchronous controller (being also a kind of LED embedded controller), and LED nonsynchronous controller of the prior art does not generally have video input interface, can only the video source that stores in advance of Play Control card internal system, outside input video source can not be play.
Refer to Fig. 1, it is the hardware configuration schematic diagram of a kind of LED nonsynchronous controller of the prior art.User needs copy in SD card by the video source wanting to play in advance or be stored in SDRAM, when needs export time, by arm processor, data processing is carried out to video source, and by FPGA, packing and the bus arbitration that certain image procossing and logic control realize view data is carried out to data, the keyset connected eventually through keyset interface exports LED lamp panel to and/or exports LED lamp panel to via receiving card again by network output module, completes video display function to carry out drived control to LED lamp panel.
As can be seen here, traditional LED nonsynchronous controller is limited to self implementation method and structure, lack video input interface, controller needs the video source play to need to be stored in advance in SD card or in SDRAM, can not the input video source of synchronous playing controller its exterior.
Utility model content
Therefore, for defect of the prior art and deficiency, the utility model proposes a kind of video input expansion card and a kind of LED display control program.
Particularly, a kind of video input expansion card that an embodiment of the present utility model proposes, is suitable for connecting the LED nonsynchronous controller for drived control LED lamp panel.Described video input expansion card comprises: analog video input interface; Analog video decoder chip, connects described analog video input interface by the first holding wire and has the first video data parallel output interface; Digital video input interface; And decoding digital video chip, connect described digital video input interface by secondary signal line and there is the second video data parallel output interface.
In an embodiment of the present utility model, described first video data parallel output interface and described second video data parallel output interface are ITU-RBT.656 or ITU-RBT.1120 video standard interface.
In an embodiment of the present utility model, described video input expansion card also comprises filtering impedance match circuit and electrostatic discharge protective circuit; Described filtering impedance match circuit connects described first holding wire, and described electrostatic discharge protective circuit connects described secondary signal line.
In an embodiment of the present utility model, described analog video input interface is AV video input interface, and described digital video input interface is HDMI.
In addition, a kind of LED display control program that an embodiment of the present utility model proposes, comprises LED nonsynchronous controller, and described LED nonsynchronous controller is suitable for connecting LED lamp panel by receiving card and carries out video display with LED lamp panel described in drived control.Described LED display control program also comprises video input expansion card, and described video input expansion card comprises: analog video input interface; Analog video decoder chip, connects described analog video input interface by the first holding wire and has the first video data parallel output interface; Digital video input interface; And decoding digital video chip, connect described digital video input interface by secondary signal line and there is the second video data parallel output interface.Wherein, described first video data parallel output interface and described second video data parallel output interface are electrically connected described LED nonsynchronous controller.
In an embodiment of the present utility model, described first video data parallel output interface and described second video data parallel output interface are ITU-RBT.656 or ITU-RBT.1120 video standard interface.
In an embodiment of the present utility model, described video input expansion card also comprises filtering impedance match circuit and electrostatic discharge protective circuit; Described filtering impedance match circuit connects described first holding wire, and described electrostatic discharge protective circuit connects described secondary signal line.
In an embodiment of the present utility model, described LED nonsynchronous controller comprises video input expansion card interface, main control module, volatile memory, nonvolatile memory and network output module, and described first video data parallel output interface and the described second video data parallel output interface of described video input expansion card are electrically connected described main control module by described video input expansion card interface; Described volatile memory and described nonvolatile memory are electrically connected described main control module, and described network output module is suitable for being connected electrically between described main control module and described receiving card.
In an embodiment of the present utility model, described main control module is the processor chips based on ARM, and the described Ethernet media interface based on the processor chips of ARM of described network output module electrical connection; Described video input expansion card interface is terminal board.
In an embodiment of the present utility model, the I2C interface of the described processor chips based on ARM is electrically connected the I2C interface of described analog video decoder chip and the I2C interface of described decoding digital video chip.
As from the foregoing, embodiment of the present utility model proposes a kind of video input expansion card, and it makes LED nonsynchronous controller have video input function, can support analog video and digital video input; In addition, because level of integrated system is high, it can solve matching problem between conventional video treatment facility and controller, reduce number of devices and connecting line quantity, simplify and control, improve Consumer's Experience.
By the detailed description below with reference to accompanying drawing, other side of the present utility model and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present utility model, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Fig. 1 is the hardware configuration schematic diagram of a kind of LED nonsynchronous controller of the prior art.
Fig. 2 illustrates the framework of a kind of LED display control program that the utility model embodiment proposes.
Fig. 3 is relevant to the video input expansion card of the utility model embodiment and the structural representation of LED nonsynchronous controller.
Fig. 4 is a kind of specific implementation of the video input expansion card being relevant to the utility model embodiment.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.
Refer to Fig. 2, a kind of LED display control program that an embodiment of the present utility model proposes comprises video input expansion card 23 and LED nonsynchronous controller 25.Wherein, the front end of video input expansion card 23 is suitable for connecting video source 21, and the rear end of video input expansion card 23 connects LED nonsynchronous controller 25; Arranging of video input expansion card 23 can make LED nonsynchronous controller 25 have analog and digital video input function, the scope of application of expansion LED nonsynchronous controller 25.In addition, LED nonsynchronous controller 25 is suitable for the LED lamp panel being connected one or more cascade by receiving card, carries out video display with drived control LED lamp panel.In addition, video source 21 is such as PC, DVD player (DVDplayer) or high definition camera with recording device (HDCamcorder).
Refer to Fig. 3; the video input expansion card 23 of the present embodiment comprises analog video input interface 231, analog video decoder chip 233, digital video input interface 235 and decoding digital video chip 237, and preferably also comprises filtering impedance match circuit 232 and electrostatic discharge protective circuit 236.Herein, because analog video input signal needs inside to carry out impedance matching, therefore on video input expansion card 23, add filtering impedance match circuit 232 be to prevent analog signal distortion; Adding of electrostatic discharge protective circuit 236 causes damage to prevent producing the pin of electrostatic to digital video decoding chip 237 when 235 hot plug of digital video input interface.
Wherein, analog video decoder chip 233 passes through holding wire connecting analog video input interface 231, the holding wire between filtering impedance match circuit 232 connecting analog video decoding chip 233 and analog video input interface 231; Decoding digital video chip 237 connects digital video input interface 235 by holding wire, and electrostatic discharge protective circuit 236 connects the holding wire between digital video decoding chip 237 and digital video input interface 235.Moreover analog video decoder chip 233 and decoding digital video chip 237 are all configured with video data parallel output interface (not drawing in Fig. 3), thus realize video data parallel output to LED nonsynchronous controller 25.Herein, the video data parallel output interface that analog video decoder chip 233 and decoding digital video chip 237 configure is such as ITU-RBT.656 or ITU-RBT.1120 video standard interface.
Hold above-mentioned, LED nonsynchronous controller 25 comprises video input expansion card interface 251, processor chips 253, SDRAM255, flash memory 257 and network output module 259 based on ARM.
Wherein, video input expansion card interface 251 is electrically connected the processor chips 253 based on ARM, it can be terminal board, thus video input expansion card 23 directly can be plugged to video input expansion card interface 251 or be connected to video input expansion card interface 251 by winding displacement, processor chips 253 based on ARM can be sent to by video input expansion card interface 251 to make the video data of the analog video decoder chip 233 on video input expansion card 23 and decoding digital video chip 237 parallel output.
Based on the processor chips 253 of ARM as the main control module of LED nonsynchronous controller 25, it is the master control core that whole system is run, the application software that after powering on, operation system (such as Linux, the operating systems such as Android) and function are correlated with, controls various external equipment and plays function.In the present embodiment, the processor chips 2531 based on ARM select high-performance ARM as master chip, and it is such as the Hi3716CV200 processor chips that Huawei sea thinks to release, but the utility model is not as limit.In addition, the utility model does not get rid of use ARM+FPGA framework of the prior art as main control module.
SDRAM255 electrical connection is based on the processor chips 253 of ARM; Certainly, be understandable that, SDRAM255 can replace to other volatile memory.
Flash memory 257 is electrically connected the processor chips 253 based on ARM, it is the power down non-volatile memory module of system and user storage data and program and is such as eMMC (EmbeddedMultiMediaCard, embedded multi-media card) flash memory, due to desired data and video when its massive store can ensure that user stores a large amount of broadcastings, thus realize the asynchronous controlling (or claiming off line to control) of LED display.Certainly, be understandable that, flash memory 257 also can replace to other nonvolatile memories.
Network output module 259 is electrically connected the processor chips 253 based on ARM, and it such as comprises ethernet PHY chip, network transformer and network interface; Herein, receiving card can receive by network output module 259 the LED display driver data and control signal that the processor chips 253 based on ARM export, and shows with drived control LED lamp panel.
Refer to Fig. 4, it illustrates a kind of specific implementation of the video input expansion card 23 of the present embodiment.
As shown in Figure 4, digital video input interface 235 is such as HDMI (HighDefinitionMultimediaInterface, high-definition media interface); Decoding digital video chip 237 is such as the ADV7612 video decoding chip that ADI company releases, and it has I2C interface; Electrostatic discharge protective circuit 236 such as comprises multiple Zener diode, and anode (anode) ground connection of each Zener diode and negative electrode (cathode) connect the many signal line between HDMI and ADV7612 video decoding chip respectively; Usually, ground wire and power line are without the need to being connected Zener diode.
Analog video input interface 231 is such as AV video input interface; Analog video decoder chip 233 is such as the TVP5150 video decoding chip that TI company releases, and it has I2C interface; Filtering impedance match circuit 232 is such as a Zener diode, the plus earth of this Zener diode and negative electrode connect the video signal cable AI-CH1 in the holding wire between AV video input interface and TVP5150 video decoding chip, and the ground wire AI-GND in holding wire is then without the need to connecting Zener diode.
In addition, the processor chips 253 based on ARM are such as the Hi3716CV200 processor chips that Huawei sea think of shown in Fig. 4 is released, and it has I2C interface; And, the I2C interface of I2C interface electrical connection ADV7612 video decoding chip of Hi3716CV200 processor chips and the I2C interface of TVP5150 video decoding chip, thus Hi3716CV200 processor chips can carry out serial communication by I2C bus and ADV7612 video decoding chip, TVP5150 video decoding chip.In addition, video data parallel output interface such as ITU-RBT.656 or the ITU-RBT.1120 video standard interface of ADV7612 video decoding chip and TVP5150 video decoding chip is electrically connected to Hi3716CV200 processor chips, thus the video data after ADV7612 video decoding chip and the process of TVP5150 video decoding chip is sent to Hi3716CV200 processor chips with the agreement meeting ITU-RBT.656 form or ITU-RBT.1120 form, to complete procotol conversion and the data packing of video data, to be provided in LED lamp panel via receiving card eventually through network output module 259 and to show.
It is pointed out that the citing of the corresponding element in the video input expansion card and LED nonsynchronous controller being only shown in Fig. 4 and the utility model proposes at this, it is not used for limiting the utility model.
In sum, the video input expansion card with double vision frequency input structure of the utility model above-described embodiment proposition, not only input interface type is enriched, Computer Vision functionally have also been obtained great enhancing, can allow the selection variation of user, and more convenient to operate.Meanwhile, the transmission path of vedio data and the matching problem of equipment room can be reduced, strengthen the reliability and stability of system.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a video input expansion card, is suitable for connecting the LED nonsynchronous controller for drived control LED lamp panel; It is characterized in that, described video input expansion card comprises:
Analog video input interface;
Analog video decoder chip, connects described analog video input interface by the first holding wire and has the first video data parallel output interface;
Digital video input interface;
Decoding digital video chip, connects described digital video input interface by secondary signal line and has the second video data parallel output interface.
2. video input expansion card as claimed in claim 1, it is characterized in that, described first video data parallel output interface and described second video data parallel output interface are ITU-RBT.656 or ITU-RBT.1120 video standard interface.
3. video input expansion card as claimed in claim 1, is characterized in that, also comprise filtering impedance match circuit and electrostatic discharge protective circuit; Described filtering impedance match circuit connects described first holding wire, and described electrostatic discharge protective circuit connects described secondary signal line.
4. video input expansion card as claimed in claim 1, it is characterized in that, described analog video input interface is AV video input interface, and described digital video input interface is HDMI.
5. a LED display control program, comprises LED nonsynchronous controller, and described LED nonsynchronous controller is suitable for connecting LED lamp panel by receiving card and carries out video display with LED lamp panel described in drived control; It is characterized in that, described LED display control program also comprises video input expansion card; Described video input expansion card comprises:
Analog video input interface;
Analog video decoder chip, connects described analog video input interface by the first holding wire and has the first video data parallel output interface;
Digital video input interface;
Decoding digital video chip, connects described digital video input interface by secondary signal line and has the second video data parallel output interface;
Wherein, described first video data parallel output interface and described second video data parallel output interface are electrically connected described LED nonsynchronous controller.
6. LED display control program as claimed in claim 5, it is characterized in that, described first video data parallel output interface and described second video data parallel output interface are ITU-RBT.656 or ITU-RBT.1120 video standard interface.
7. LED display control program as claimed in claim 5, it is characterized in that, described video input expansion card also comprises filtering impedance match circuit and electrostatic discharge protective circuit; Described filtering impedance match circuit connects described first holding wire, and described electrostatic discharge protective circuit connects described secondary signal line.
8. LED display control program as claimed in claim 5, it is characterized in that, described LED nonsynchronous controller comprises video input expansion card interface, main control module, volatile memory, nonvolatile memory and network output module, and described first video data parallel output interface and the described second video data parallel output interface of described video input expansion card are electrically connected described main control module by described video input expansion card interface; Described volatile memory and described nonvolatile memory are electrically connected described main control module, and described network output module is suitable for being connected electrically between described main control module and described receiving card.
9. LED display control program as claimed in claim 8, it is characterized in that, described main control module is the processor chips based on ARM, and the described Ethernet media interface based on the processor chips of ARM of described network output module electrical connection; Described video input expansion card interface is terminal board.
10. LED display control program as claimed in claim 9, it is characterized in that, the I2C interface of the described processor chips based on ARM is electrically connected the I2C interface of described analog video decoder chip and the I2C interface of described decoding digital video chip.
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| CN201520759210.9U CN204967957U (en) | 2015-09-28 | 2015-09-28 | Video input expansion card and LED display control system |
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| CN201520759210.9U CN204967957U (en) | 2015-09-28 | 2015-09-28 | Video input expansion card and LED display control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111857521A (en) * | 2020-06-28 | 2020-10-30 | 西安诺瓦星云科技股份有限公司 | Multi-device management method and device and integrated display control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111857521A (en) * | 2020-06-28 | 2020-10-30 | 西安诺瓦星云科技股份有限公司 | Multi-device management method and device and integrated display control system |
| CN111857521B (en) * | 2020-06-28 | 2022-06-17 | 西安诺瓦星云科技股份有限公司 | Multi-device management method and device and integrated display control system |
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Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: XI'AN NOVASTAR TECH Co.,Ltd. Address before: 710075 Qinfengge D District 401, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xi'an NovaStar Tech Co.,Ltd. |
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