CN112822438A - Real-time control multichannel video manager - Google Patents
Real-time control multichannel video manager Download PDFInfo
- Publication number
- CN112822438A CN112822438A CN202011559542.4A CN202011559542A CN112822438A CN 112822438 A CN112822438 A CN 112822438A CN 202011559542 A CN202011559542 A CN 202011559542A CN 112822438 A CN112822438 A CN 112822438A
- Authority
- CN
- China
- Prior art keywords
- video signal
- video
- module
- processing unit
- signals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000015654 memory Effects 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 6
- 230000006870 function Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical group C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a real-time control multi-channel video manager, which comprises an N-channel video signal receiving unit, a video signal processing unit, an output video signal processing unit and a system control unit, wherein the N-channel video signal receiving unit is used for receiving an N-channel video signal; the video signal receiving unit of N routes, is used for receiving the video signal of N routes from video source output; the video signal processing unit is used for processing the signals sent by the N paths of video signal receiving units; the output video signal processing unit is used for receiving the signal from the video signal processing unit, identifying the EDID of the display connected with the output port, acquiring the resolution of the display, reading the resolution information of the EDID, uploading the resolution information to the system control unit, and receiving a control signal sent by the system control unit; and the system control unit is used for controlling the N paths of video signal receiving units, the video signal processing unit and the output video signal processing unit. The invention avoids the delay of the display picture and can normally realize all functions.
Description
Technical Field
The present invention relates to video management, and more particularly to a real-time control multi-channel video manager.
Background
At present, there are two main processing methods for the multi-channel video management system: one is to adopt a computer to process images; in this way, when processing a video signal source with a large data stream of more than or equal to 8M, the frame frequency is very slow or delayed a lot because the CPU performance bandwidth limitation and the memory shortage become unable to be processed normally, and many other functions are also unable to be implemented, so the requirement of the clinical operating room on the video processing equipment is not satisfied at all; the other method is that the front stage adopts a video processing chip, and the rear end adopts an FPGA chip for splicing processing, in the mode, two stages of video processing all need to use a memory, so that the superposed delay time is very high, the common delay time is more than 3 frames, and a plurality of functions cannot be realized and can only be used in occasions with single function requirements.
Therefore, the two methods at present have many defects and cannot meet the requirement of clinic on the video signal acquisition of the operating room.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a real-time control multi-channel video manager.
In order to achieve the purpose, the invention adopts the following technical scheme:
a real-time control multi-channel video manager comprises an N-channel video signal receiving unit, a video signal processing unit, an output video signal processing unit and a system control unit;
the N-channel video signal receiving unit is used for receiving N-channel video signals output by a video source;
the video signal processing unit is used for processing the signals sent by the N paths of video signal receiving units;
the output video signal processing unit is used for receiving the signal from the video signal processing unit, identifying the EDID of the display connected with the output port, acquiring the resolution of the display, reading the resolution information of the EDID, uploading the resolution information to the system control unit, and receiving the control signal sent by the system control unit;
and the system control unit is used for controlling the N paths of video signal receiving units, the video signal processing unit and the output video signal processing unit.
The further technical scheme is as follows: the N-channel video signal receiving unit comprises a uniform format conversion module and a video signal screening module;
the uniform format conversion module is used for uniformly converting the video signals with different formats output by the N paths of video sources into signals with a uniform format;
the video signal screening module is used for selecting M paths of video signals from the signals in the unified format processed by the unified format conversion module and transmitting the M paths of video signals to the video signal processing unit.
The further technical scheme is as follows: n in the N video signals is more than or equal to 1 and less than or equal to 24.
The further technical scheme is as follows: m in the M video signals is more than or equal to 1 and less than or equal to N.
The further technical scheme is as follows: the video signal processing unit comprises a zooming processing module, an image data processing module, a ping-pong buffer module and a bus control module;
the scaling processing module is used for obtaining information of the input resolution of each path of video signals and the output resolution of the corresponding window, scaling the video signals of the corresponding path to the output resolution of the window, and transmitting the video signals to the image data processing module;
the image data processing module is used for receiving the coordinate information of each path of video signals sent by the bus control module and storing the area of each path of video signals divided according to the coordinate information to the ping-pong cache module;
the ping-pong buffer module is used for storing the video signal;
and the bus control module is used for receiving the control signal sent by the system control unit.
The further technical scheme is as follows: the ping-pong cache module comprises two memories with the same size and used for reading and writing, namely a memory A and a memory B, wherein when the memory A executes reading, the memory B executes writing, or when the memory B executes reading, the memory A executes writing.
Compared with the prior art, the invention has the beneficial effects that: the invention can output multi-channel video signals, correspondingly connect with a plurality of displays, output appointed multi-channel pictures on any display, or simultaneously connect two output video signal sources to an 8M display to simultaneously display a plurality of pictures as a single large display screen, thereby avoiding picture delay and normally realizing all functions.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.
Drawings
Fig. 1 is a system architecture diagram of an embodiment of a real-time control multi-channel video manager according to the present invention.
Detailed Description
In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
The invention is applied to video processing equipment, and is particularly suitable for the requirement of a clinical operating room on multi-picture video processing equipment. At present, there are two main processing methods for the multi-channel video management system: the first is to adopt a computer to process images; the second is that the front stage adopts a video processing chip and the rear end adopts an FPGA chip for splicing processing. The first method for processing video signals by adopting a computer comprises the following steps: the first stage collects multi-channel image signals through a plurality of video capture cards, the second stage performs image zooming, splicing and the like through a CPU (central processing unit), and because the CPU has limited performance, the low-resolution image signals can be generally processed, but the video signal source for processing large data streams of more than or equal to 8M is processed, because the CPU has limited performance bandwidth and insufficient memory, the video signal source cannot be normally processed, the frame frequency is very slow or delayed, and many other functions cannot be realized, so that the requirement of a clinical operating room on video processing equipment cannot be met at all. The second way is: in recent years, video splicing processing is realized by utilizing two-stage video processing, usually, a first stage adopts a special video processing chip for processing, and a second stage adopts FGPA for video signal splicing processing, but the method is that the two-stage video processing needs to use a memory, so that the superimposed delay time is very high, the general delay time is more than 3 frames, and many functions cannot be realized, and only the method can be used in occasions with single function requirements.
The invention is provided for solving the problems in the prior art, and the invention has the advantages that firstly, the invention can process the multi-channel input and output video signals, the delay time is reduced to the maximum extent, and the delay time of the video processing can completely reach the neglect state for the sensory system of the human body; secondly, the purpose of remotely controlling the equipment is realized by accessing the external Internet and logging in a WEB interface; thirdly, a set of mouse and keyboard are accessed to achieve a plurality of input video signal source devices of transparent transmission control (KVM); fourthly, the video signal source with multiple paths (two or more paths) is output and correspondingly connected with a plurality of displays, appointed multiple paths of pictures can be output on any display, or the video signal source with two paths of outputs can be simultaneously connected to an 8M display to be used as a single large display screen to simultaneously display a plurality of pictures. The invention is described below by means of specific examples.
Referring to fig. 1, a real-time control multi-channel video manager includes N channels of video signal receiving units, a video signal processing unit, an output video signal processing unit, and a system control unit;
the video signal receiving unit of N routes, is used for receiving the video signal of N routes from video source output;
the video signal processing unit is used for processing the signals sent by the N paths of video signal receiving units;
the output video signal processing unit is used for receiving the signal from the video signal processing unit, identifying the EDID of the display connected with the output port, acquiring the resolution of the display, reading the resolution information of the EDID, uploading the resolution information to the system control unit, and receiving a control signal sent by the system control unit;
and the system control unit is used for controlling the N paths of video signal receiving units, the video signal processing unit and the output video signal processing unit.
Furthermore, the N-channel video signal receiving unit comprises a uniform format conversion module and a video signal screening module;
the uniform format conversion module is used for uniformly converting the video signals with different formats output by the N paths of video sources into signals with a uniform format;
and the video signal screening module is used for selecting M paths of video signals from the signals in the unified format processed by the unified format conversion module and transmitting the M paths of video signals to the video signal processing unit.
Furthermore, the video signal processing unit comprises a zooming processing module, an image data processing module, a ping-pong buffer module and a bus control module;
the scaling processing module is used for obtaining information of the input resolution of each path of video signals and the output resolution of the corresponding window, scaling the video signals of the corresponding path to the output resolution of the window and transmitting the video signals to the image data processing module;
the image data processing module is used for receiving the coordinate information of each path of video signals sent by the bus control module and storing the area of each path of video signals divided according to the coordinate information to the ping-pong cache module;
the ping-pong buffer module is used for storing the video signal;
and the bus control module is used for receiving the control signal sent by the system control unit.
Further, the ping-pong buffer module comprises two memories with the same size and used for reading and writing, namely a memory a and a memory B, wherein when the memory a performs reading, the memory B performs writing, or when the memory B performs reading, the memory a performs writing.
Specifically, the N-channel video signal receiving unit receives video signals output from the video source output device, and assuming that the maximum number of the input N-channel video signals (N is an integer greater than or equal to 1) is 24 channels, the N-channel video signal receiving unit can receive video signals of different formats output by the 24 channels of video sources, and simultaneously uniformly convert the received signals into signals of a standard (here, TMDS signals are taken as an example) format, and through APP software installed on the system control unit, M channels (M is an integer greater than or equal to 1 and less than or equal to N) video signals required on the human-computer interaction interface are selected and transmitted to the next-stage module for analysis and processing.
The zooming processing module obtains the information of the input resolution of each path of video signal and the output resolution of the corresponding window, zooms the corresponding path of video signal to the output resolution of the window, and transmits the video signal to the image data processing module. The image processing module receives the coordinate information of each path of video signals sent by the bus control module and stores the area of each path of signals divided according to the coordinate information to the ping-pong buffer module. The method comprises the steps that firstly, information sent for the first time is stored in a memory A, when the memory A obtains an instruction of a write controller, writing operation is carried out on the memory A, when the memory A finishes storing, a bus control immediately starts operation on a read controller, the stored information of the memory A is read, the information sent for the second time is stored in a memory B at the same time when the memory A is read, the bus control sends the information to the write controller at the same time, and the write controller sends write control information to the memory B for writing operation. After the memory A finishes reading, the operation of writing is started again, the memory B starts the operation of reading, ping-pong switching operation is always carried out between the memory A and the memory B, the operation of reading and writing video information is continuously repeated, and the image data processing module continuously transmits the read video signals to the next-stage processing module.
The bus control module receives control signals from a system control unit at the upper stage, and the control signals respectively comprise a zooming control unit, a writing controller, a reading controller and the like. Ping-pong cache has two memories of the same size, memory a and memory B, as read and write operations, to achieve the purpose of fast real-time. The storage time may be a frame or a half frame, and the line buffer time may also be set according to the requirements of the system design, so as to achieve the purpose of real-time transmission of video signal processing.
The output video signal processing unit receives the signal from the upper-level video signal processing unit, identifies the EDID of the display connected with the output port, acquires the resolution of the display, reads the resolution information of the EDID, uploads the resolution information to the system control unit, and receives the control signal sent by the system control unit. Assuming that there are two displays, namely a display a and a display B, first, the video signal transmitted from the previous module is divided into A, B two paths of video driving signals, the video signal of the display a is defined as an a path video signal, the video signal of the display B is defined as a B path video signal, and the video signal data is rearranged and combined according to the control signal and output to the corresponding display for display. If the signals of the A path and the B path need to be combined to drive an 8M display, the video signals of the A path and the B path need to use the same pixel clock, and the video signals of the two paths can be kept synchronous. If a plurality of displays need to be connected, M paths (an integer of M is more than or equal to 1 and less than or equal to N) of video driving signals need to be provided at the output video signal processing module, and M paths of pixel clocks corresponding to the video driving signals need to be provided, so that the synchronization with the video driving signals is kept.
The system control unit is a control center of the system and mainly controls the N paths of video signal receiving units, the video signal processing unit and the output video signal processing unit, an operating system is installed on the system control unit, APP software is installed on the operating system, man-machine interaction is carried out on a local control or Web interface, corresponding signal sources are selected to be placed on corresponding windows, coordinates of corresponding signal sources are generated, and the coordinates are transmitted to a bus control unit of the video signal processing unit. Meanwhile, input mouse and keyboard data can be synthesized and then transmitted to the multi-channel video signal input source system through the USB port, and the multi-channel video signal input source is controlled, so that the KVM function is realized.
The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.
Claims (6)
1. A real-time control multi-channel video manager is characterized by comprising an N-channel video signal receiving unit, a video signal processing unit, an output video signal processing unit and a system control unit;
the N-channel video signal receiving unit is used for receiving N-channel video signals output by a video source;
the video signal processing unit is used for processing the signals sent by the N paths of video signal receiving units;
the output video signal processing unit is used for receiving the signal from the video signal processing unit, identifying the EDID of the display connected with the output port, acquiring the resolution of the display, reading the resolution information of the EDID, uploading the resolution information to the system control unit, and receiving the control signal sent by the system control unit;
and the system control unit is used for controlling the N paths of video signal receiving units, the video signal processing unit and the output video signal processing unit.
2. The real-time control multi-channel video manager according to claim 1, wherein the N-channel video signal receiving units comprise a unified format conversion module and a video signal screening module;
the uniform format conversion module is used for uniformly converting the video signals with different formats output by the N paths of video sources into signals with a uniform format;
the video signal screening module is used for selecting M paths of video signals from the signals in the unified format processed by the unified format conversion module and transmitting the M paths of video signals to the video signal processing unit.
3. The real-time control multi-channel video manager according to claim 2, wherein N is greater than or equal to 1 and less than or equal to 24 in the N channels of video signals.
4. The real-time control multi-channel video manager according to claim 3, wherein M is greater than or equal to 1 and less than or equal to N in the M video signals.
5. The real-time control multi-channel video manager according to claim 1, wherein the video signal processing unit comprises a scaling processing module, an image data processing module, a ping-pong buffer module and a bus control module;
the scaling processing module is used for obtaining information of the input resolution of each path of video signals and the output resolution of the corresponding window, scaling the video signals of the corresponding path to the output resolution of the window, and transmitting the video signals to the image data processing module;
the image data processing module is used for receiving the coordinate information of each path of video signals sent by the bus control module and storing the area of each path of video signals divided according to the coordinate information to the ping-pong cache module;
the ping-pong buffer module is used for storing the video signal;
and the bus control module is used for receiving the control signal sent by the system control unit.
6. The real-time control multi-channel video manager according to claim 5, wherein the ping-pong buffer module comprises two memories of the same size for read and write operations, respectively, a memory A and a memory B, wherein the memory B performs a write operation when the memory A performs a read operation, or the memory A performs a write operation when the memory B performs a read operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559542.4A CN112822438A (en) | 2020-12-25 | 2020-12-25 | Real-time control multichannel video manager |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559542.4A CN112822438A (en) | 2020-12-25 | 2020-12-25 | Real-time control multichannel video manager |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112822438A true CN112822438A (en) | 2021-05-18 |
Family
ID=75853882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011559542.4A Pending CN112822438A (en) | 2020-12-25 | 2020-12-25 | Real-time control multichannel video manager |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112822438A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608710A (en) * | 2021-07-19 | 2021-11-05 | 深圳市炬力北方微电子有限公司 | Screen projection method and related equipment |
| CN114339379A (en) * | 2021-12-30 | 2022-04-12 | 深圳市巨烽显示科技有限公司 | Multi-window ultra-low delay video signal processing method, apparatus, device and medium |
| CN114401367A (en) * | 2022-01-14 | 2022-04-26 | 西安超越申泰信息科技有限公司 | Video switching display method and system based on distributed EDID storage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249107A (en) * | 2017-05-03 | 2017-10-13 | 西安诺瓦电子科技有限公司 | Video controller and image processing method and device |
| CN111355861A (en) * | 2020-05-25 | 2020-06-30 | 深圳市康帕斯科技发展有限公司 | Multi-screen video synchronous splicing device and method |
-
2020
- 2020-12-25 CN CN202011559542.4A patent/CN112822438A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249107A (en) * | 2017-05-03 | 2017-10-13 | 西安诺瓦电子科技有限公司 | Video controller and image processing method and device |
| CN111355861A (en) * | 2020-05-25 | 2020-06-30 | 深圳市康帕斯科技发展有限公司 | Multi-screen video synchronous splicing device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608710A (en) * | 2021-07-19 | 2021-11-05 | 深圳市炬力北方微电子有限公司 | Screen projection method and related equipment |
| CN114339379A (en) * | 2021-12-30 | 2022-04-12 | 深圳市巨烽显示科技有限公司 | Multi-window ultra-low delay video signal processing method, apparatus, device and medium |
| CN114339379B (en) * | 2021-12-30 | 2024-05-10 | 深圳市巨烽显示科技有限公司 | Multi-window ultra-low delay video signal processing method, device, equipment and medium |
| CN114401367A (en) * | 2022-01-14 | 2022-04-26 | 西安超越申泰信息科技有限公司 | Video switching display method and system based on distributed EDID storage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112822438A (en) | Real-time control multichannel video manager | |
| AU2005330638B2 (en) | Apparatus and system for managing multiple computers | |
| CN104917990B (en) | Video frame rate compensation is carried out by adjusting vertical blanking | |
| US5943064A (en) | Apparatus for processing multiple types of graphics data for display | |
| US7372465B1 (en) | Scalable graphics processing for remote display | |
| EP1217602A2 (en) | Updating image frames in a display device comprising a frame buffer | |
| CN107249107B (en) | Video controller and image processing method and device | |
| KR20030081463A (en) | Image display system | |
| CN211184115U (en) | Vehicle-mounted display control terminal with multi-channel video display function | |
| JP2008506295A (en) | Method and system for displaying a series of image frames | |
| CN110824218B (en) | Digital storage oscilloscope system based on ZYNQ | |
| CN109587421B (en) | HD-SDI/3G-SDI transceiving and real-time picture-in-picture switching output processing method | |
| US20080136828A1 (en) | Remote Access Device | |
| CN112367537A (en) | Video acquisition-splicing-display system based on ZYNQ | |
| CN101980142A (en) | Multi-screen image segmentation processing system and method thereof | |
| US20060055626A1 (en) | Dual screen display using one digital data output | |
| US7158140B1 (en) | Method and apparatus for rendering an image in a video graphics adapter | |
| CN114339045B (en) | Image processing system and display device | |
| KR20170028810A (en) | Display apparatus and Method for controlling the display apparatus thereof | |
| CN113132783B (en) | Multi-machine shared multi-screen display control system and method | |
| CN106210665B (en) | Remote host control method and system based on video acquisition | |
| CN115002304A (en) | Video image resolution self-adaptive conversion device | |
| CN114913799A (en) | Display control method and device and display equipment | |
| CN114339379B (en) | Multi-window ultra-low delay video signal processing method, device, equipment and medium | |
| CN220421880U (en) | 8K video signal generator based on multi-chip FPGA and SOC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 518000 floor 15, building 6, Hengda fashion Huigu building (East District), Fulong Road, Henglang community, Dalang street, Longhua District, Shenzhen, Guangdong Applicant after: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. Address before: 518055 12th floor, building B1, Nanshan wisdom Park, 1001 Xueyuan Avenue, Nanshan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210518 |
|
| RJ01 | Rejection of invention patent application after publication |