CN110784620A - Equipment data intercommunication method - Google Patents
Equipment data intercommunication method Download PDFInfo
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- CN110784620A CN110784620A CN201911055096.0A CN201911055096A CN110784620A CN 110784620 A CN110784620 A CN 110784620A CN 201911055096 A CN201911055096 A CN 201911055096A CN 110784620 A CN110784620 A CN 110784620A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
- H04N1/32363—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter at the transmitter or at the receiver
- H04N1/32379—Functions of a still picture terminal memory associated with reception
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
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- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a device data intercommunication method.A sender data processing module converts data into pictures and transmits the pictures to a receiver video acquisition card through a TMDS minimized transmission differential signal protocol of HDMI, and a receiver data processing module restores the pictures into data through reverse processing so as to acquire the transmitted data. Meanwhile, the control signaling is transmitted through the audio signal, the states of a sender and a receiver are synchronized, and the aim of efficiently and reliably transmitting data is fulfilled. The method can realize the intercommunication of two devices without network card connection, and provides an information communication channel for two devices which are not directly networked, and the method does not use an Ethernet mode for communication, thereby avoiding the possibility of data leakage and equipment invasion; the TMDS minimized transmission differential signal protocol is adopted to transmit data, so that the stability of data transmission is improved. And meanwhile, the digital audio is used as a transmission channel of the control signaling, so that the data transmission efficiency and the transmission reliability are improved.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a device data intercommunication method.
Background
With the development of the era, communication becomes more and more important. In most industries, a network card (wired or wireless) is selected for communication, and the network card brings convenience and also brings problems of information safety and the like. Therefore, for industries with higher safety requirements, the network card is prevented from being selected to be connected with external equipment. However, as the industry is more closely related, communication between the two devices is indispensable, and it is very important how to establish a secure communication mode for two devices that cannot be connected by using a network card.
The existing common network card communication has the following disadvantages: data is transmitted on a network card network cable, so that information can be directly extracted by some means by lawless persons; network card communication security measures are not strict and are easy to be invaded by lawbreakers; in the network card communication, the network environment is seriously influenced, and if the network is not smooth, phenomena such as communication blockage, packet loss and the like are easy to occur.
In the prior art, a local area network interworking method (application publication No. CN107948038A) discloses a local area network interworking method, which employs a TMDS transition minimized differential signaling protocol of HDMI, transmits file information converted into a picture format to a video acquisition card of another local area network via HDMI, acquires a digital signal of a picture via the video acquisition card, and parses the picture information into an original file via a data processing module, thereby acquiring transmitted data. The prior art has some serious defects, so that the reliability and the efficiency of data transmission are low.
In the prior art (application publication No. CN107948038A), the amount of data carried by each picture is limited, and is limited by the resolution of the video card and the video capture card, and once the picture to be sent exceeds the carrying amount of one picture, the data needs to be divided into a plurality of parts and transmitted by a plurality of pictures.
The following problems arise based on the above mechanisms:
1. after the sender sends a picture, the receiver cannot be informed of the start of receiving, and cannot know whether the receiver starts receiving, because the data transmission cannot be returned, the reliability is low.
2. After the sender transmits the first picture through the display card, the receiver cannot know whether the picture is successfully received, so that the receiver cannot judge whether the second picture and the subsequent pictures are to be sent. When a large amount of data is transmitted, the transmission will become inefficient because the subsequent data pictures cannot be sent out in time.
3. The picture identification has a certain probability of error, and if no fault-tolerant mechanism exists, the reliability of the prior art is very low.
This patent is to above problem, has increased control signaling and redundant fault-tolerant data on prior art's basis, has solved the problem that transmission reliability is low and inefficiency.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a device data intercommunication method, which adopts an audio transmission control signaling to control a TMDS minimized transmission differential signal protocol of an HDMI (high-definition multimedia interface) to realize the interconnection between two devices and is used for the transmission of various files and data.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: a device data intercommunication method, data are transmitted between two devices through TMDS minimized transmission differential signal protocol, the method comprises the following steps:
s1: a sender encodes a file or data to be sent into a picture through a data processing module and outputs the picture to a display card;
s2: the display card transmits the picture to a video acquisition card of a receiver through a TMDS minimized transmission differential signal protocol of the HDMI;
s3: the sending party sends a control signaling of 'receiving data' to the receiving party through a digital audio circuit;
s4: after receiving the control signaling of 'receiving data', the receiver reads the picture in the video capture card into the memory, and the sender sends the control signaling of 'receiving completed';
s5: after receiving the control signaling of "reception complete", the transmitting side re-executes the step of transmitting data from S1 if there is any subsequent data. (ii) a
S6: after receiving a picture, the receiving party decodes the picture into a file or data through the data processing module and stores the file or data and the previous part jointly.
In step S1, the data processing module will first determine whether the sent picture is a file or memory data, and mark the beginning of the coded picture accordingly.
The process of the encoding file of the data processing module in the step S1 is as follows:
1) compressing the file by using a ZIP compression algorithm;
2) storing the file attributes and the compressed file content in S1 in a continuous segment of memory;
3) the file attribute and the file data of the compressed file are averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through a GDI interface (the GDI interface is used for processing the graphs and image outputs of all Windows programs) in a mode that a black dot represents 1 and a white dot represents 0.
The process of the memory data file of the data processing module in step S1 is as follows:
1) compressing the memory data by using a ZIP compression algorithm;
2) storing the compressed memory data in S1 in a continuous memory;
3) the compressed memory data is averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through GDI interfaces (the GDI interfaces are used for processing the graphs and image output of all Windows programs) in a mode that black dots represent 1 and white dots represent 0.
The decoding process of the data processing module in the above step S6 is as follows:
1) the data processing module in the S6 acquires the picture stored in the memory by the video acquisition card, analyzes the black and white dot matrix in the picture, and then restores the picture into binary data;
2) identifying the type identifier, confirming whether the image is a file or memory data, converting one or more images into binary data through a decompression algorithm, and restoring the binary data into the file or the memory data.
And video capture cards are arranged on the receivers.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adds redundant fault-tolerant data on the basis of the prior art, because the picture identification is possible to have errors, the redundant fault-tolerant data can be used for correcting when the errors occur, so that the fault-tolerant purpose is achieved, and the reliability of data transmission is improved.
2. The invention adds a mechanism of transmitting control signaling by using an audio channel on the basis of the prior art, and improves the efficiency and reliability of data transmission.
Drawings
Fig. 1 is a schematic diagram of information transmission of a device data interworking method according to an embodiment of the present invention.
Fig. 2 is an information transmission flow chart of a device data interworking method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, an information transmission diagram of the device data interworking method of the present embodiment is shown. In the method for device data interworking in this embodiment, a data processing module of one device (hereinafter referred to as a sending party) converts data into a picture and transmits the picture to a video capture card of another device (hereinafter referred to as a receiving party) through a TMDS minimized transmission differential signal protocol of HDMI, and the data processing module of the receiving party restores the picture into data through reverse processing, thereby obtaining the transmitted data. Meanwhile, the control signaling is transmitted through the audio signal, the states of a sender and a receiver are synchronized, and the aim of efficiently and reliably transmitting data is fulfilled.
In the method for data intercommunication of devices according to this embodiment, data is transmitted between two devices through a TMDS minimized transmission differential signaling protocol, and the method includes the following steps:
s1: a sender encodes a file or data to be sent into a picture through a data processing module and outputs the picture to a display card;
s2: the display card transmits the picture to a video acquisition card of a receiver through a TMDS minimized transmission differential signal protocol of the HDMI;
s3: the sending party sends a control signaling of 'receiving data' to the receiving party through a digital audio circuit;
s4: after receiving the control signaling of 'receiving data', the receiver reads the picture in the video capture card into the memory, and the sender sends the control signaling of 'receiving completed';
s5: after receiving the control signaling of "reception complete", the transmitting side re-executes the step of transmitting data from S1 if there is any subsequent data. (ii) a
S6: after receiving a picture, the receiving party decodes the picture into a file or data through the data processing module and stores the file or data and the previous part jointly.
FIG. 2 is an information transmission flow chart of a device data interworking method according to an embodiment of the present invention
In step S1, the data processing module will first determine whether the sent picture is a file or memory data, and mark the beginning of the coded picture accordingly.
The process of the encoding file of the data processing module in the step S1 is as follows:
1) compressing the file by using a ZIP compression algorithm;
2) storing the file attributes and the compressed file content in S1 in a continuous segment of memory;
3) the file attribute and the file data of the compressed file are averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through a GDI interface (the GDI interface is used for processing the graphs and image outputs of all Windows programs) in a mode that a black dot represents 1 and a white dot represents 0.
The process of the memory data file of the data processing module in step S1 is as follows:
1) compressing the memory data by using a ZIP compression algorithm;
2) storing the compressed memory data in S1 in a continuous memory;
3) the compressed memory data is averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through GDI interfaces (the GDI interfaces are used for processing the graphs and image output of all Windows programs) in a mode that black dots represent 1 and white dots represent 0.
The decoding process of the data processing module in the above step S6 is as follows:
1) the data processing module in the S6 acquires the picture stored in the memory by the video acquisition card, analyzes the black and white dot matrix in the picture, and then restores the picture into binary data;
2) identifying the type identifier, confirming whether the image is a file or memory data, converting one or more images into binary data through a decompression algorithm, and restoring the binary data into the file or the memory data.
And video capture cards are arranged on the receivers.
The invention provides an information communication channel for two devices which are not directly networked, and the method does not use an Ethernet mode for communication, thereby avoiding the possibility of data leakage and equipment invasion; the TMDS minimized transmission differential signal protocol is adopted to transmit data, so that the stability of data transmission is improved; meanwhile, the digital audio is used as a mechanism for transmitting control signaling by a channel, so that the data efficiency and the transmission reliability are improved.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (6)
1. A method for data intercommunication of devices, data are transmitted between two devices through TMDS minimized transmission differential signal protocol, which is characterized in that the method comprises the following steps:
s1: a sender encodes a file or data to be sent into a picture through a data processing module and outputs the picture to a display card;
s2: the display card transmits the picture to a video acquisition card of a receiver through a TMDS minimized transmission differential signal protocol of the HDMI;
s3: the sending party sends a control signaling of 'receiving data' to the receiving party through a digital audio circuit;
s4: after receiving the control signaling of 'receiving data', the receiver reads the picture in the video capture card into the memory, and the sender sends the control signaling of 'receiving completed';
s5: after receiving the control signaling of "reception complete", the transmitting side re-executes the step of transmitting data from S1 if there is any subsequent data. (ii) a
S6: after receiving a picture, the receiving party decodes the picture into a file or data through the data processing module and stores the file or data and the previous part jointly.
2. The device data interworking method of claim 1, wherein:
in step S1, the data processing module will first determine whether the sent picture is a file or memory data, and make a corresponding identifier at the beginning of the encoded picture.
3. The device data interworking method of claim 1, wherein:
the process of the encoding file of the data processing module in step S1 is as follows:
1) compressing the file by using a ZIP compression algorithm;
2) storing the file attributes and the compressed file content in S1 in a continuous segment of memory;
3) the file attribute and the file data of the compressed file are averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through a GDI interface (the GDI interface is used for processing the graphs and image outputs of all Windows programs) in a mode that a black dot represents 1 and a white dot represents 0.
4. The device data interworking method of claim 1, wherein:
the process of the memory data file of the data processing module in step S1 is as follows:
1) compressing the memory data by using a ZIP compression algorithm;
2) storing the compressed memory data in S1 in a continuous memory;
3) the compressed memory data is averagely divided into a plurality of blocks, redundant fault-tolerant contents are added to the block data and the block data are binarized, and the data are converted into a BMP picture consisting of black and white dot matrixes through GDI interfaces (the GDI interfaces are used for processing the graphs and image output of all Windows programs) in a mode that black dots represent 1 and white dots represent 0.
5. The device data interworking method of claim 1, wherein:
the decoding process of the data processing module in step S6 is as follows:
1) the data processing module in the S6 acquires the picture stored in the memory by the video acquisition card, analyzes the black and white dot matrix in the picture, and then restores the picture into binary data;
2) identifying the type identifier, confirming whether the image is a file or memory data, converting one or more images into binary data through a decompression algorithm, and restoring the binary data into the file or the memory data.
6. The device data interworking method according to one of claims 1 to 5, wherein:
and video capture cards are arranged on the receivers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911055096.0A CN110784620A (en) | 2019-10-31 | 2019-10-31 | Equipment data intercommunication method |
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| CN201911055096.0A CN110784620A (en) | 2019-10-31 | 2019-10-31 | Equipment data intercommunication method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115883264A (en) * | 2023-03-03 | 2023-03-31 | 北京仁光科技有限公司 | Information security transmission system and information security transmission method |
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| US20050105498A1 (en) * | 2003-11-17 | 2005-05-19 | Sony Corporation | Method and system for wireless digital multimedia transmission |
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Application publication date: 20200211 |
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