CN113923509B - HDMI video acquisition control processing system - Google Patents
HDMI video acquisition control processing system Download PDFInfo
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- CN113923509B CN113923509B CN202111166116.9A CN202111166116A CN113923509B CN 113923509 B CN113923509 B CN 113923509B CN 202111166116 A CN202111166116 A CN 202111166116A CN 113923509 B CN113923509 B CN 113923509B
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- 238000012545 processing Methods 0.000 title claims abstract description 43
- 238000007405 data analysis Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012937 correction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses an HDMI video acquisition control processing system, which comprises an HDMI signal input module, an MCU control module, a data analysis module, a decoding module, an image control module, an audio control module, an interface module, an HDCP encryption module and an HDMI display module; the HDMI signal input module transmits input information to the MCU control module, the MCU control module respectively controls the image control module and the audio control module to transmit audio and video information to the HDMI encryption module respectively through the interface module through the decoding module, and the HDMI encryption module inputs the audio and video information to the HDMI display module; the MCU control module controls the data analysis module. The invention provides the HDMI video acquisition control processing system which has high intelligent degree, various functions, simple and convenient control of the HDMI system, and good safety and reliability, and can solve the phenomenon of black screen display.
Description
Technical Field
The invention relates to the technical field of video equipment, in particular to an HDMI video acquisition control processing system.
Background
HDMI is designed to replace the terminals of older analog signal audiovisual transmission interfaces such as SCART or RCA. It supports various television and computer video formats including SDTV, HDTV video pictures, plus multi-channel digital audio. Both HDMI and UDI with audio transmission removed inherit the core technology "transmission minimized differential signaling" TMDS of DVI, which is basically still an extension of DVI.
DVI, HDMI, UDI are transmitted in an instant and special line mode, so that the phenomenon of blockage can be avoided when the video flow is large. Each pixel data amount is 24 bits. The timing of the signals is very similar to VGA. The pictures are sent in a row-by-row mode, a specific blank time (similar to an analog scanning line) is added after each row and each frame of pictures are sent, the data Micro-Packet Architecture (Micro data packet architecture) is not changed, and only the changed parts of the pictures of the front frame and the rear frame are not updated. Each picture is completely retransmitted at the time of the update. .
More and more live hosts transmit game playing pictures of the game machine PS 4/Xbox/and the like to the PC side through the UVC by the HDMI video technology, and post-processing is performed. The existing HDMI display control technology is single, inconvenient to use and poor in user experience.
Especially, when the HDMI source has an HDCP on, the HDMI video system will display a black picture, and cannot record images. The user can only find out how to close the HDCP function of the source end by using a user manual or surfing the internet, thereby causing the use obstacle.
The Chinese patent application number is: 201410034199.X, application date is 24 days of 2014, 01 month, publication date is: the patent name of 2017, 08 and 01 is: the invention discloses an HDMI signal processing system and a processing method, and the HDMI signal processing system comprises an HDMI signal input module for receiving and decomposing HDMI signals, a signal processing module for performing operation processing on audio and video signals, a checking module for checking an audio level table, an image processing module for integrating information after operation processing into visual data, and an HDMI signal output module. The invention also provides a corresponding processing method, which can change the common peripheral with the HDMI interface into a professional monitor, thereby saving a great deal of cost.
The above patent document discloses an HDMI signal processing system, but the HDMI signal processing system still has few functions for processing audio and video information, and cannot meet consumer needs, especially cannot process the phenomenon that an HDMI video system displays black pictures.
Disclosure of Invention
The invention mainly aims to provide the HDMI video acquisition control processing system which has high intelligent degree, various functions, simple and convenient control of an HDMI system, and good safety and reliability, and can solve the phenomenon of black screen display.
In order to achieve the above-mentioned purpose, the present invention proposes an HDMI video acquisition control processing system, which includes an HDMI signal input module, an MCU control module, a data analysis module, a decoding module, an image control module, an audio control module, an interface module, an HDCP encryption module, and an HDMI display module;
The HDMI signal input module is used for inputting HDMI audio and video information; the MCU control module is used for controlling and processing information data; the data analysis module is used for analyzing and processing information processed by the MCU control module; the decoding module is used for decoding the information; the image control module is used for controlling and processing the image information; the audio control module is used for controlling and processing the audio information, and the interface module is used for accessing the input information; the HDCP encryption module is used for encrypting the HDMI information; the HDMI display module is used for controlling and displaying HDMI information;
the HDMI signal input module transmits input information to the MCU control module, the MCU control module respectively controls the image control module and the audio control module to transmit audio and video information to the HDMI encryption module respectively through the interface module through the decoding module, and the HDMI encryption module inputs the audio and video information to the HDMI display module; the MCU control module controls the data analysis module.
The data analysis module comprises a data correction module for correcting data information.
The MCU control module comprises a data detection module, wherein the data detection module is used for detecting data.
The decoding module comprises a black screen display module and an instruction module, wherein the black screen display module is used for displaying black screen information, and the instruction module is used for transmitting instruction information; the MCU control module controls the black screen module through the decoding module, and the black screen module transmits information to the HDMI signal input module through the instruction module.
The instruction module comprises a menu module for displaying menu information.
The invention also comprises a PC end, wherein the image control module and the audio control module respectively transmit the audio and video information to the PC end through the interface module.
The MCU control module 4 is a CPU processor with the model of an actions micro AM 8270.
The technical scheme provided by the invention has the beneficial effects that 1) the HDMI audio and video information is controlled by the MCU control module, and analyzed by the data analysis module, and data detection is carried out by the data detection module, so that the accuracy and the effectiveness of the HDMI audio and video information controlled by the MCU control module are ensured; 2) The invention can process the black screen display phenomenon in real time, has simple and efficient processing, various functions and high intellectualization, and greatly improves the working efficiency; 3) The invention has high safety and strong reliability, is the upgrade of the modern HDMI control system, and is favorable for further popularization in the market.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a system block diagram of an HDMI video acquisition control processing system according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an HDMI video acquisition control processing system.
Example 1
Referring to fig. 1, in an embodiment of the present invention, the HDMI video acquisition control processing system includes an HDMI signal input module 1, an MCU control module 2, a data analysis module 21, a decoding module 3, an image control module 7, an audio control module 8, an interface module 9, an HDCP encryption module 11, and an HDMI display module 12;
The HDMI signal input module 1 is used for inputting HDMI audio and video information; the MCU control module 2 is used for controlling and processing information data; the data analysis module 21 is used for analyzing and processing information processed by the MCU control module; the decoding module 3 is used for decoding the information; the image control module 7 is used for performing control processing on the image information; the audio control module 8 is used for controlling and processing audio information, and the interface module 9 is used for accessing input information; the HDCP encryption module 11 is configured to encrypt HDMI information; the HDMI display module 12 is configured to control and display HDMI information;
The HDMI signal input module 1 transmits input information to the MCU control module 2, the MCU control module 2 respectively controls the image control module 7 and the audio control module 8 to respectively transmit audio and video information to the HDCP encryption module 11 through the interface module 9 through the decoding module 3, and the HDCP encryption module 11 inputs the audio and video information to the HDMI display module 12; the MCU control module 2 controls the data analysis module 21.
In this embodiment, preferably, the MCU control module 2 is a CPU processor with a model of actions micro AM 8270.
In this embodiment, preferably, the present invention further includes a PC terminal 10, and the image control module 7 and the audio control module 8 respectively transmit the audio and video information to the PC terminal 10 through the interface module 9.
In this embodiment, the signal source input by the HDMI signal input module 1 is a signal source without encryption, and after the MCU control module 2 decodes the signal source by the decoding module 3, the image control module 7 and the audio control module 8 are controlled to transmit the audio/video information to the HDMI display module 12 or the PC terminal 10 through the interface module 9, respectively; the HDMI display module 12 may control the display 13 to display the video information input by the HDMI signal input module 1;
The video information received by the PC terminal 10 and input by the HDMI signal input module 1 through the interface module 9 can be directly displayed on the PC terminal.
In this embodiment, the data analysis module 21 preferably includes a data correction module 211, and the data correction module 211 is used for correcting data information.
In this embodiment, the data analysis module 21 may further analyze the control processing information of the MCU control module 2, so as to ensure accuracy and effectiveness of information processing of the MCU control module 2; the correction module 211 can further correct the data information of the data analysis module 21, so that the information processed by the MCU control module 2 is more perfect, accurate and effective.
In this embodiment, the MCU control module 2 preferably includes a data detection module 22, and the data detection module 22 is configured to detect data.
In this embodiment, the data detection module 22 detects the information processed by the MCU control module 2, so as to further ensure the validity of the information processed by the MCU control module 2.
Example 2
Referring to fig. 1, in this embodiment, the decoding module 3 preferably includes a black screen display module 4 and an instruction module 5, where the black screen display module 4 is configured to display black screen information, and the instruction module 5 is configured to transmit instruction information; the MCU control module 2 controls the black screen module 4 through the decoding module 3, and the black screen module 4 transmits information to the HDMI signal input module 1 through the instruction module 5.
In this embodiment, the signal source input by the HDMI signal input module 1 is encrypted, and in general, the HDMI display module 12 controls the display 13 to display a black screen.
In order to solve the problem of the black screen, when the signal source input by the HDMI signal input module 1 is encrypted, the MCU control module 2 controls the black screen module 4 through the decoding module 3, the black screen module 4 transmits information to the HDMI signal input module 1 through the command module 5, decrypts the input source signal through the HDMI signal input module 1, and transmits the decrypted signal source to the PC terminal 10 or the display 13 through the command module 5 to display the video information input by the HDMI signal input module 1.
In this embodiment, preferably, the device name (SONY or other brands) and the device property (DVD PLAYER) of the HDMI source end can be known through the HDMI CEC function.
If the information input by the signal Source of the HDMI signal input module 1 supports the private protocol (vendor defined), the HDMI function of the Source terminal can be automatically and directly closed through CEC command.
If the information input by the HDMI signal input module 1 is the equipment which does not support the private protocol of the invention, the invention can inquire the equipment name and the brand, and the corresponding mode of how to close the HDCP is displayed to the user through the image display system on OSD (framebuffer) or the QR code is generated to be displayed on the picture, so that the user can directly connect the scanning code to the webpage, and the user can operate and process conveniently.
In this embodiment, the instruction module 5 preferably includes a menu module 6, and the menu module 6 is configured to display menu information. The command module 5 transmits command information to the HDMI signal input module 1, and the HDMI signal input module 1 decrypts the source information and then displays the source information in the menu form on the menu module 6 through the menu module 6.
The invention can send CEC command of HDMI through HDMI signal input module 1, and display HDMITx (sender) device name on PC 10 or display 13.
The invention inputs instruction information to the HDMI signal input module 1 through the instruction module 5 to acquire the name of the brand or the device name of the signal input source.
The HDMI signal input module 1 may actively send instruction information to determine whether the Source end supports the private protocol of the present invention.
If the Source supports the private protocol, control information is sent and displayed on the frame buffer (frame buffer), and the HDCP hint message is turned off.
If the Source end does not support the private protocol, the Source end is displayed on OSD (framebuffer) through the image control system according to how the HDCP of different brands is turned off, the user can directly see the original image and the operation indication (displayed on the OSD) through the display screen of the capture card HDMITx, or the user can directly connect the scan code to the web page through the quick response code (QRcode) generation method, and the user can operate according to the indication.
The foregoing is only illustrative of the preferred embodiments of the present invention, and the invention is not limited to the above-mentioned embodiments, but is capable of modification and variation without departing from the spirit and scope of the invention, and other technical field related to the invention, including equivalent structural changes made by the description of the invention and the accompanying drawings, or direct/indirect application, are included in the scope of the invention.
Claims (7)
1. An HDMI video acquisition control processing system is characterized in that: the device comprises an HDMI signal input module, an MCU control module, a data analysis module, a decoding module, an image control module, an audio control module, an interface module, an HDCP encryption module and an HDMI display module;
The HDMI signal input module is used for inputting HDMI audio and video information; the MCU control module is used for controlling and processing information data; the data analysis module is used for analyzing and processing information processed by the MCU control module; the decoding module is used for decoding the information; the image control module is used for controlling and processing the image information; the audio control module is used for controlling and processing the audio information, and the interface module is used for accessing the input information; the HDCP encryption module is used for encrypting the HDMI information; the HDMI display module is used for controlling and displaying HDMI information;
The HDMI signal input module transmits input information to the MCU control module, the MCU control module respectively controls the image control module and the audio control module to transmit audio and video information to the HDMI encryption module respectively through the interface module through the decoding module, and the HDMI encryption module inputs the audio and video information to the HDMI display module; the MCU control module controls the data analysis module;
the HDMI signal input module outputs information input by a signal source to the HDMI display module, and if the signal source supports a private protocol, the HDMI video acquisition control processing system automatically and directly turns off an HDCP function of a signal source end through CEC command;
The HDMI signal input module outputs information input by a signal source to the HDMI display module, if the signal source is equipment which does not support a private protocol, the HDMI video acquisition control processing system inquires equipment information, a corresponding mode of how to close the HDCP of a product is displayed to a user through the image display system or QR code is generated and displayed on a picture, a user scans codes and is directly connected to a webpage, and the user performs operation processing.
2. The HDMI video capture control processing system of claim 1, wherein: the data analysis module includes a data correction module for correcting data information.
3. The HDMI video capture control processing system of claim 2, wherein: the MCU control module comprises a data detection module, wherein the data detection module is used for detecting data.
4. The HDMI video capture control processing system of claim 1, wherein: the decoding module comprises a black screen display module and an instruction module, wherein the black screen display module is used for displaying black screen information, and the instruction module is used for transmitting instruction information; the MCU control module controls the black screen display module through the decoding module, and the black screen display module transmits information to the HDMI signal input module through the instruction module.
5. The HDMI video capture control processing system of claim 4, wherein: the instruction module comprises a menu module for displaying menu information.
6. The HDMI video capture control processing system of claim 5, wherein: the system also comprises a PC end, wherein the image control module and the audio control module respectively transmit the audio and video information to the PC end through the interface module.
7. The HDMI video acquisition control processing system according to any one of claims 1 to 6, wherein: the MCU control module is a CPU processor with the model of actions micro AM 8270.
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| JP6080963B2 (en) * | 2012-10-12 | 2017-02-15 | スリング メディア，インク． | Method and apparatus for managing an interface in a place shift apparatus. |
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| KR20050027351A (en) * | 2003-09-15 | 2005-03-21 | 삼성전자주식회사 | Method and apparatus for transmitting image data in host device having copy protection function |
| CN101841639A (en) * | 2010-03-26 | 2010-09-22 | 青岛海信电器股份有限公司 | Multimedia signal processing device and multimedia video-audio system |
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