CN105657291A - Video controller - Google Patents
Video controller Download PDFInfo
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- CN105657291A CN105657291A CN201610016002.9A CN201610016002A CN105657291A CN 105657291 A CN105657291 A CN 105657291A CN 201610016002 A CN201610016002 A CN 201610016002A CN 105657291 A CN105657291 A CN 105657291A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention relates to a video controller which comprises a programmable logic device and a video processing chip, a microprocessor, a pre-monitoring display screen and a dynamic random access memory which are electrically connected with the programmable logic device. The programmable logic device selects one of input video sources of the programmable logic device as a video source to be processed by the video processor chip according to a human-computer interaction instruction from the microprocessor, selects an interactive menu or one of the input video sources of the programmable logic device as a pre-monitoring video source of the pre-monitoring display screen according to a human-computer interaction instruction from the microprocessor, and is combined with the dynamic random access memory to process the selected pre-monitoring video source so as to transmit the pre-monitoring video source to the pre-monitoring display screen for display. The invention discloses the video controller with a pre-monitoring function, and the video controller is simple to operate, convenient to use, high in cost performance and convenient to carry and store, and thus, the condition of blindly switching the video sources and unknowing whether a switched target video source is normal can be prevented, and well knowing in the switching process is achieved.
Description
Technical field
The present invention relates to display control technology field, particularly to a kind of Video Controller.
Background technology
LED display is in actual applications, it is frequently necessary to be shown on LED display by various video source, or need to switch to B video source to play in the midway playing A video source, if being made directly switching, just finding video source abnormal state after being likely to occur video source switching, what cause that LED display show is not be that user wants to show or intended content. So, in order to ensure reaching the effect oneself wanted after switching, it is necessary to can conveniently confirm the state in target video source and the content that will cut before the handover.
Fig. 1 is the module diagram of a kind of existing Video Controller. As it is shown in figure 1, it is such as STDP8028 chip, MCU (MicrocontrollerUnit, single-chip microcomputer) 13 and man-machine interaction liquid crystal display screen such as single color LCD screen that Video Controller 10 includes video processor chip 11. Wherein, MCU13 obtains the relevant information in the input video source of video processor chip 11 and sends and display and respond user's input operation to man-machine interaction liquid crystal display screen 15 and control video processor chip 11 and select A video source or video source B to carry out processing and the video source such as A video source output after processing displayed to video display terminal 20; Herein, video display terminal 20 is such as LED display screen system, and it is typically include sending card+receiving card+LED display; It will additionally be appreciated that MCU13 also can electrically connect input equipment such as button, knob etc. carries out input operation for user. It is known that Video Controller 10 does not have premonitoring function from Fig. 1, thus video source switching is not had whether to ensure normally in some occasions to client, it is difficult to meet customer need.
Therefore, in actual applications, do not know that in order to avoid blind the cutting of video source switching whether normal the target video source of switching and in order to know what's what when accomplishing and switch, as shown in Figure 2, the premonitoring function that the external premonitoring device 31 of Video Controller 10 and premonitoring monitor 33 (such as liquid crystal display) realize, but although this scheme can realize premonitoring function, however it is necessary that extra premonitoring device and premonitoring monitor, carry storage inconvenience, and add the cost of whole product self and the cost of transport, storage.
Summary of the invention
Therefore, the present invention switches to prevent video source blind cutting and do not know that whether the target source of switching normal and in order to know what's what when accomplishing and switch, it is provided that a kind of Video Controller with premonitoring function.
Specifically, the embodiment of the present invention proposes a kind of Video Controller, including video processor chip and microprocessor. furthermore, described Video Controller also includes: PLD and electrically connect premonitoring display screen and the dynamic RAM of described PLD, described video processor chip electrically connects described PLD, described microprocessor electrically connects described PLD and for providing interactive menu and man-machine interaction instruction to described PLD, described PLD for selecting one of input video source of described PLD as described video processor chip video source to be processed and according to the pre-monitoring frequency source as described premonitoring display screen, one of the man-machine interaction instruction input video source selecting described interactive menu or described PLD coming from described microprocessor and process selected pre-monitoring frequency source in conjunction with described dynamic RAM and display to deliver to described premonitoring display screen according to the man-machine interaction instruction coming from described microprocessor.
In one embodiment of the invention, described microprocessor is single-chip microcomputer, and described premonitoring display screen is colorful display screen, and described premonitoring display screen is arranged on the control panel of casing of described Video Controller.
In one embodiment of the invention, described video processor chip includes video input mouth and video output, described video input mouth electrically connects described PLD for obtaining video source to be processed, and described video output electrically connects described PLD and delivers to described PLD for by the process rear video source of described video processor chip.
In one embodiment of the invention, described PLD specifically for selecting the first input video source in the first input video source of described PLD and the second input video source as described video processor chip video source to be processed and to select described interactive menu or described second input video source as the pre-monitoring frequency source of described premonitoring display screen according to the man-machine interaction instruction coming from described microprocessor.
In one embodiment of the invention, described PLD includes video input module, interactive menu input module, pre-monitoring frequency selects module, video scaling processing module, memory access controls module and driver module, described video input module is for receiving the input video source of described PLD and selecting one of described input video source as described video processor chip video source to be processed according to the man-machine interaction instruction from described microprocessor, described interactive menu input module is for receiving the interactive menu coming from described microprocessor, described pre-monitoring frequency selects module for receiving the described interactive menu from described interactive menu input module, described input video source from described video input module and the rear video source that processes from described video processor chip according to being that described premonitoring display screen selects pre-monitoring frequency source from the man-machine interaction instruction of described microprocessor, described video scaling processing module controls module buffer memory extremely described dynamic RAM for utilizing described memory access after described pre-monitoring frequency source is zoomed in and out process, described driver module shows described pre-monitoring frequency source for utilizing the described memory access control module pre-monitoring frequency source from described dynamic RAM reading buffer memory the pre-monitoring frequency source driving according to reading to control described premonitoring display screen.
In one embodiment of the invention, described PLD also includes the second video scaling processing module, and described Video Controller also includes pre-monitoring frequency output interface and described pre-monitoring frequency output interface is standard video interface; It is that described pre-monitoring frequency output interface selects pre-monitoring frequency source that described pre-monitoring frequency selects module to be additionally operable to according to the man-machine interaction instruction from described microprocessor, and described second video scaling processing module is for delivering to described pre-monitoring frequency output interface after the pre-monitoring frequency source of described pre-monitoring frequency output interface is zoomed in and out process.
In one embodiment of the invention, described PLD also includes frame-rate conversion module, and the view data that the access of described dynamic RAM realizes described pre-monitoring frequency source for controlling described memory access control module exports described premonitoring display screen with fixing frame frequency via described driver module.
In one embodiment of the invention, described Video Controller also includes pre-monitoring frequency output interface, described PLD be additionally operable to according to the man-machine interaction instruction coming from described microprocessor select from the input video source of described video input module or from input video source after the process of described video processor chip pre-monitoring frequency source as described pre-monitoring frequency output interface zoom in and out process to deliver to described pre-monitoring frequency output interface.
In one embodiment of the invention, described Video Controller also includes the second PLD, network transmission module and network interface, the video output of the described second PLD described video processor chip of electrical connection or described PLD are to obtain the process rear video source of described video processor chip, and described network transmission module is connected electrically between described second PLD and described network interface.
In one embodiment of the invention, described PLD is FPGA.
As from the foregoing, the embodiment of the present invention proposes the Video Controller with premonitoring function, it is simple to operate, easy to use, cost performance is high and carries storage conveniently, and is prevented from blind the cutting of video source switching and does not know that whether the target video source of switching is normal, accomplishes to know what's what when switching.
By the detailed description below with reference to accompanying drawing, other side and the feature of the present invention become apparent upon. It is understood that this accompanying drawing is only the purpose design of explanation, not as the restriction of the scope of the present invention. It should also be noted that unless otherwise noted, it is not necessary to scale accompanying drawing, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the module diagram of the Video Controller of a kind of function without premonitoring of the prior art.
Fig. 2 adopts Video Controller shown in Fig. 1 to realize the system architecture schematic diagram of premonitoring function in prior art.
Fig. 3 is the module diagram of a kind of Video Controller with premonitoring function that the embodiment of the present invention proposes.
Fig. 4 is the module diagram that the another kind that the embodiment of the present invention proposes has the Video Controller of premonitoring function.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Referring to Fig. 3, a kind of Video Controller 300 with premonitoring function that the present embodiment proposes includes: PLD 310, video processor chip 320, MCU330, pre-monitoring frequency output interface 350, premonitoring liquid crystal display screen 360 and dynamic RAM 370.Wherein, PLD 310 is such as field programmable gate array (FieldProgrammableGateArray, FPGA) device or other similar logical devices; Video processor chip 320 electrically connects PLD 310, and it is such as STDP8028 chip or other video processor chip such as FLI32626 chip etc.; MCU330 electrically connects PLD 310, and being used for responding user's input operation (such as by electrically connect the input equipment of MCU330 perform input operation as button, knob etc.) provides man-machine interaction instruction to provide interactive menu to PLD 310 and to PLD 310; Pre-monitoring frequency output interface 350 electrically connects PLD 310 and it is standard video interface such as HDMI or DVI interface etc.; Premonitoring liquid crystal display screen 360 is such as TFT LCDs; Dynamic RAM 370 is such as the memorizeies such as SDRAM, and it can as video source buffer memory and interactive menu buffer memory. Furthermore, from physical arrangement Layout-Angle, on the circuit board that PLD 310, video processor chip 320, MCU330, pre-monitoring frequency output interface 350 and dynamic RAM 370 are such as provided in being installed in the casing of Video Controller 300, and premonitoring liquid crystal display screen 360 is such as provided on the control panel of casing.
Holding above-mentioned, PLD 310 includes: video input module 311, interactive menu input module 312, pre-monitoring frequency select module 313, video scaling processing module 315 and 317, memory access to control module 318 and driver module 319.
Wherein, video input module 311 is for receiving the video source inputs such as DVI, HDMI and the man-machine interaction instruction according to MCU330 selects input to deliver to video processor chip 320 to which video source in video input module 311 by the video input mouth of video processor chip 320 to carry out the video source after being processed; Interactive menu input module 311 inputs for the interactive menu received from MCU330; Pre-monitoring frequency selects module 313 for selecting pre-monitoring frequency output interface 350 and the premonitoring video source image sources of liquid crystal display screen 360 according to the man-machine interaction instruction from MCU330, optional video source one of (namely the input video source of PLD 310), the interactive menu of interactive menu input module 312 deriving from video input module 311 or deliver to pre-monitoring frequency via the video output of video processor chip 320 and select the process rear video source (namely another of the input video source of PLD 310) of module 313; Video scaling processing module 315 arranges corresponding zooming parameter according to the pre-monitoring frequency source that pre-monitoring frequency selects module 313 to be video scaling processing module 315 selection and carries out video scaling process, and exports to pre-monitoring frequency output interface 350 with standard resolution (such as 1080P) or User Defined resolution after scaling; Video scaling processing module 317 arranges corresponding zooming parameter for the pre-monitoring frequency source that the actual pixels point width according to premonitoring liquid crystal display screen 360 high (namely resolution) and pre-monitoring frequency select module 313 to be video scaling processing module 317 selection and carries out video scaling process, and the video image after convergent-divergent controls module 318 by memory access and writes dynamic RAM 370; Memory access controls module 318 and by corresponding vedio data write dynamic RAM 370 or reads from dynamic RAM 370 for the read-write requests responding video scaling processing module 317 and driver module 319;Driver module 319 reads the vedio data of buffer memory from dynamic RAM 370 for controlling module 318 by memory access and processes, it is achieved exports premonitoring liquid crystal display screen 360 with fixing frame frequency and resolution and displays. It is worth mentioning that, when using premonitoring with liquid crystal display screen 360 premonitoring interactive menu, directly interactive menu (certain present invention is not limited thereto) can be combined into according to the actual pixels width of premonitoring liquid crystal display screen 360 high (namely resolution) at MCU330 end, such video scaling processing module 317 avoids the need for interactive menu is zoomed in and out process, and can control module 318 by video image buffer memory corresponding for interactive menu to dynamic RAM 370 either directly through memory access.
For ease of being more clearly understood that the present invention, a kind of premonitoring below in conjunction with Fig. 3 Video Controller 300 describing the embodiment of the present invention in detail realizes process.
Multiple video source such as A video source and B video source is currently had to be simultaneously entered and show B video source premonitoring A and the situation of B video source for PLD 310, first MCU330 such as provides the interactive menu interactive menu input module 312 to PLD 310 sender's machine interactive instruction to pre-monitoring frequency to select module 313 to be selected module 313 to select the interactive menu deriving from interactive menu input module 312 as its pre-monitoring frequency source for video scaling processing module 317 by pre-monitoring frequency, now video scaling processing module 317 controls module 318 buffer memory to dynamic RAM 370 by memory access after interactive menu carries out the process of necessity, controlled module 318 by driver module 319 by memory access afterwards read the interactive menu view data of buffer memory from dynamic RAM 370 and drive control premonitoring liquid crystal display screen 360 to show that interactive menu is (in this case according to the interactive menu view data read, premonitoring liquid crystal display screen 360 has the function of man-machine interaction liquid crystal display screen of the prior art concurrently) be beneficial to user do further input operation make MCU330 produce corresponding man-machine interaction instruction. next, MCU330 such as send man-machine interactive instruction to PLD 310 with inform currently show on video display terminal B video source and will on premonitoring liquid crystal display screen 360 premonitoring A video source and in pre-monitoring frequency output interface 350 premonitoring B video source, the B video source of input is delivered to video processor chip 320 according to the man-machine interaction instruction from MCU330 and is carried out the input of the B video source after being processed to pre-monitoring frequency and select module 313 and the A video source of input is fed directly to pre-monitoring frequency selects module 313 by the video input module 311 of PLD 310, furthermore video processor chip 320 process the process that B video source obtains after B video source also can be directly output to video display terminal or first deliver to PLD 310 and be transmitted to video display terminal by PLD 310 again and play out display. afterwards, pre-monitoring frequency selects module 313 according to the man-machine interaction instruction from MCU330, B video source after process being delivered on the one hand and export after video scaling processing module 315 carries out video scaling process to pre-monitoring frequency output interface 350, therefore user can check state and the content of B video source by connecting premonitoring monitor such as liquid crystal display or CRT monitor at pre-monitoring frequency output interface 350, on the other hand A video source is delivered to and write dynamic RAM 370 and carry out buffer memory through being controlled module 318 by memory access after video scaling processing module 317 carries out video scaling process, the A video source being read buffer memory by memory access control module 318 from dynamic RAM 370 by driver module 319 again drives control premonitoring liquid crystal display screen 360 to show A video source, thus user can check state and the content of A video source by premonitoring liquid crystal display screen 360,So far A video source and the premonitoring of B video source are realized.
In brief, realize in process in above-mentioned premonitoring, it is that video processor chip 320 selects video source to be processed and selects pre-monitoring frequency source (to be respectively derived from the video source of video input module 311 for pre-monitoring frequency output interface 350 and premonitoring liquid crystal display screen 360 that PLD 310 is mainly used in the man-machine interaction instruction of response MCU330, the interactive menu of interactive menu input module 312 or the process rear video source of video processor chip 320) and carry out being processed for premonitoring, and pre-monitoring frequency output interface 350 is different with the pre-monitoring frequency source of premonitoring liquid crystal display screen 360. it is, of course, understood that pre-monitoring frequency output interface 350 and the pre-monitoring frequency source of premonitoring liquid crystal display screen 360 can also identical such as all premonitoring A video source, the effect simply processed is likely to different.
In addition, realize process from aforementioned premonitoring to be appreciated that, application scenario is switched in video source, utilize premonitoring liquid crystal display screen 360 can realize the purpose in the to be switched target video source of premonitoring, that is, in some embodiments it is possible to consider to omit the video scaling processing module 315 in the PLD 310 in Video Controller 300 and pre-monitoring frequency output interface 350.
Additionally, in other embodiments, video processor chip 320 processes the rear video source that processes obtained and is not limited to use conventional video display terminal as liquid crystal display or CRT monitor (correspondingly, video source after the process of video processor chip 320 can be directly output to the video output interface that connects for conventional video display terminal or first input to PLD 310 be forwarded to the video output interface connected for conventional video display terminal again by PLD 310) etc. play out display, LED display screen system can also be delivered to display, such as by the modules in the Video Controller 300 shown in Fig. 3 together with the sending card Function Integration Mechanism in LED display screen system to obtain the Video Controller with sending card function, such as shown in Fig. 4.
Specifically, in the diagram, Video Controller 400 is except including the modules 310��370 in the Video Controller 300 shown in Fig. 3, also have additional the second PLD 481, network transmission module 483 and multi-path network port 485 (such as two-way network interface or more multi-path network port), namely be additionally arranged sending card logic. Wherein, second PLD 481 is electrically connected the pre-monitoring frequency of PLD 310 and selects module 313 (or video processor chip 320) to be sent by network transmission module 483 and network interface 485 after processing accordingly with the video source after obtaining the process of video processor chip 320 output carrying out, and is received via receiving card for LED display and shows; Furthermore, preferably by parallel TTL format transmission vedio data between second PLD 481 and PLD 310 (or video processor chip 320), and described TTL format video view data inputs to the second PLD 481 without signal format conversion after PLD 310 (or video processor chip 320) output; Certainly, the video source view data transmission between video processor chip 320 and PLD 310 can also adopt in parallel TTL form and transmitting procedure and change without signal format. As for other details of video processor chip technical scheme together with sending card logic integration are referred to Xi'an Novastar Electronic Technology Co., Ltd.'s application number application on 04 24th, 2014 Chinese invention patent application that to be 201410168285.X, denomination of invention be " LED display controls to block ", its described content quotation is in this composition part as description of the present invention.
In addition, in other embodiments, a frame-rate conversion (FrameRateConversion can also be set up in PLD 310, FRC) module, the view data controlling the pre-monitoring frequency source that the access of dynamic RAM 370 is realized premonitoring liquid crystal display screen 360 by module 318 by controlling memory access arrives premonitoring liquid crystal display screen 360 with fixing frame frequency via driver module 319 output.
Finally it is worth mentioning that, the premonitoring liquid crystal display screen 360 in previous embodiment can use other kinds of colorful display screen to replace; Additionally, MCU330 can also use other microprocessors such as arm processor to replace.
In sum, the embodiment of the present invention proposes the Video Controller with premonitoring function, it is simple to operate, easy to use, cost performance is high and carries storage conveniently, and is prevented from blind the cutting of video source switching and does not know that whether the target video source of switching is normal, accomplishes to know what's what when switching.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, without departing within the scope of technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is without departing from technical solution of the present invention content, according to any simple modification that above example is made by the technical spirit of the present invention, equivalent variations and modification, all still fall within the scope of technical solution of the present invention.
Claims (10)
1. a Video Controller, including video processor chip and microprocessor, it is characterized in that, described Video Controller also includes: PLD and electrically connect premonitoring display screen and the dynamic RAM of described PLD, described video processor chip electrically connects described PLD, described microprocessor electrically connects described PLD and for providing interactive menu and man-machine interaction instruction to described PLD, described PLD for selecting one of input video source of described PLD as described video processor chip video source to be processed and according to the pre-monitoring frequency source as described premonitoring display screen, one of the man-machine interaction instruction input video source selecting described interactive menu or described PLD coming from described microprocessor and process selected pre-monitoring frequency source in conjunction with described dynamic RAM and display to deliver to described premonitoring display screen according to the man-machine interaction instruction coming from described microprocessor.
2. Video Controller as claimed in claim 1, it is characterised in that described microprocessor is single-chip microcomputer, and described premonitoring display screen is colorful display screen, and described premonitoring display screen is arranged on the control panel of casing of described Video Controller.
3. Video Controller as claimed in claim 1, it is characterized in that, described video processor chip includes video input mouth and video output, described video input mouth electrically connects described PLD for obtaining video source to be processed, and described video output electrically connects described PLD and delivers to described PLD for by the process rear video source of described video processor chip.
4. Video Controller as claimed in claim 1, it is characterized in that, described PLD as described video processor chip video source to be processed and selects described interactive menu or described second input video source as the pre-monitoring frequency source of described premonitoring display screen specifically for selecting the first input video source in the first input video source of described PLD and the second input video source according to the man-machine interaction instruction coming from described microprocessor.
5. Video Controller as claimed in claim 1, it is characterized in that, described PLD includes video input module, interactive menu input module, pre-monitoring frequency selects module, video scaling processing module, memory access controls module and driver module, described video input module is for receiving the input video source of described PLD and selecting one of described input video source as described video processor chip video source to be processed according to the man-machine interaction instruction from described microprocessor, described interactive menu input module is for receiving the interactive menu coming from described microprocessor, described pre-monitoring frequency selects module for receiving the described interactive menu from described interactive menu input module, described input video source from described video input module and the rear video source that processes from described video processor chip according to being that described premonitoring display screen selects pre-monitoring frequency source from the man-machine interaction instruction of described microprocessor, described video scaling processing module controls module buffer memory extremely described dynamic RAM for utilizing described memory access after described pre-monitoring frequency source is zoomed in and out process, described driver module shows described pre-monitoring frequency source for utilizing the described memory access control module pre-monitoring frequency source from described dynamic RAM reading buffer memory the pre-monitoring frequency source driving according to reading to control described premonitoring display screen.
6. Video Controller as claimed in claim 5, it is characterized in that, described PLD also includes the second video scaling processing module, and described Video Controller also includes pre-monitoring frequency output interface and described pre-monitoring frequency output interface is standard video interface; It is that described pre-monitoring frequency output interface selects pre-monitoring frequency source that described pre-monitoring frequency selects module to be additionally operable to according to the man-machine interaction instruction from described microprocessor, and described second video scaling processing module is for delivering to described pre-monitoring frequency output interface after the pre-monitoring frequency source of described pre-monitoring frequency output interface is zoomed in and out process.
7. Video Controller as claimed in claim 1, it is characterized in that, described PLD also includes frame-rate conversion module, and the view data that the access of described dynamic RAM realizes described pre-monitoring frequency source for controlling described memory access control module exports described premonitoring display screen with fixing frame frequency via described driver module.
8. Video Controller as claimed in claim 1, it is characterized in that, described Video Controller also includes pre-monitoring frequency output interface, described PLD be additionally operable to according to the man-machine interaction instruction coming from described microprocessor select from the input video source of described video input module or from input video source after the process of described video processor chip pre-monitoring frequency source as described pre-monitoring frequency output interface zoom in and out process to deliver to described pre-monitoring frequency output interface.
9. Video Controller as claimed in claim 1, it is characterized in that, described Video Controller also includes the second PLD, network transmission module and network interface, the video output of the described second PLD described video processor chip of electrical connection or described PLD are to obtain the process rear video source of described video processor chip, and described network transmission module is connected electrically between described second PLD and described network interface.
10. Video Controller as claimed in claim 1, it is characterised in that described PLD is FPGA.
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| CN106375831A (en) * | 2016-09-21 | 2017-02-01 | 华东师范大学 | FPGA-based multi-dynamic video floating window system |
| CN111429832A (en) * | 2018-12-21 | 2020-07-17 | 西安诺瓦星云科技股份有限公司 | Synchronous control system for display controller and L ED display screen |
| CN112312040A (en) * | 2019-07-30 | 2021-02-02 | 西安诺瓦星云科技股份有限公司 | Video processor and display system |
| CN112449220A (en) * | 2019-08-30 | 2021-03-05 | 西安诺瓦星云科技股份有限公司 | Video playing device and video playing system |
| CN112584217A (en) * | 2019-09-27 | 2021-03-30 | 西安诺瓦星云科技股份有限公司 | Picture identification method, device and system |
| CN112822545A (en) * | 2019-11-15 | 2021-05-18 | 西安诺瓦星云科技股份有限公司 | Image display method, device and system and video controller |
| CN114449183A (en) * | 2020-11-02 | 2022-05-06 | 瑞昱半导体股份有限公司 | Image processing chip and image processing method |
| CN114520883A (en) * | 2020-11-19 | 2022-05-20 | 西安诺瓦星云科技股份有限公司 | Video source switching method and device and video processing equipment |
| TWI774100B (en) * | 2020-10-26 | 2022-08-11 | 瑞昱半導體股份有限公司 | Video processor chip and video processing method |
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