CN103532880A - Non-contact type data transmission method and non-contact type code reading switcher - Google Patents
Non-contact type data transmission method and non-contact type code reading switcher Download PDFInfo
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- CN103532880A CN103532880A CN201310485989.5A CN201310485989A CN103532880A CN 103532880 A CN103532880 A CN 103532880A CN 201310485989 A CN201310485989 A CN 201310485989A CN 103532880 A CN103532880 A CN 103532880A
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Abstract
The invention relates to a method and a device for reading signal codes, in particular to a non-contact type data transmission method and a non-contact type code reading switcher. Data are encoded and converted to two-dimensional bar codes by an encoder, and then displayed on a display screen in the two-dimensional bar code form. Two-dimensional bar code information on the display screen is recorded by a camera and then read and decoded by a code reader. Through the method and the structure, the data are converted to the two-dimensional bar code information by the encoder, the two-dimensional bar codes are displayed on the display screen, the two-dimensional bar code information is directly collected by the camera, and the codes are read and decoded by the code reader. In the method, during data transmission, the display screen is used as an output element, the camera is used as an input element, a certain imaging distance is arranged between the camera and the display screen, and images on the display screen can be collected by the camera without any other physical media, so that the camera and the display screen are physically isolated from each other, and the elements have irreversible characteristics in work principles. Therefore, the safety degree of the mode is very high, and no risks exist in the transmission process.
Description
Technical field
The present invention relates to a kind of signal reading code method and device, especially a kind of non-contact data transmission method and contactless reading code switch.
Background technology
So-called exchanges data, is the process of data that transmits between data source and data sink, also claims data communication.Data are numeral, letter and the symbols etc. that can be processed by computer.It is a kind of carrier of information.Transfer of data is a kind of form of communication, mainly refers to the communication relevant with computer.Data source and data sink are in same machine, and the exchanges data between computer peripheral and processing unit, is called transmission in machine.Conventional method has four kinds.1. program transmits: utilize the instruction in program to control external equipment and processing unit swap data.2. program interrupt transmits: by sending interrupt requests to processing unit with the external equipment of processing unit swap data, processing unit response interrupt requests, suspend the original program of carrying out, utilize interrupt service subroutine to complete exchanges data, after exchange, turn back to the original program that is suspended execution.3. directly internal memory transmits (DMA): high speed external equipment is during as disk or tape request swap data, by external equipment directly and internal memory swap data.4. off line transmits: between the equipment of swap data, depart from the control of CPU (central processing unit), directly carry out exchanges data.
But in the transfer of data of high security classification, be the transmission that needs unidirectional unidirectional type, this class technology has two representatives at present, first is gateway transmission, dependence control signal realizes unidirectional the writing with unidirectional of data and reads, complete the one-way transmission of data, but still there is drawback in this mode, used computer technology completely automatically, one way technique its unidirectional validity difficult of proof based on electrical isolation, simultaneously by programme controlled data sheet to writing, unidirectional reading in theory still exists by people as distorting, thereby cause unidirectional isolated failure, produce catastrophic consequence, second is optical gate transmission, relies on beam splitting prism attachment to realize data one-way transmission, and still this mode is transmitted by optical fiber conducting, does not realize physical isolation completely, has certain application safety risk, can not meet higher security applications requirement.
Summary of the invention
The object of the invention is to, a kind of complete physical isolation, transfer of unidirectional is irreversible, safe class is high non-contact data transmission method are provided.
A further object of the present invention is, a kind of complete physical isolation, transfer of unidirectional is irreversible, safe class is high contactless reading code switch are provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of non-contact data transmission method, its method is, encoder is encoded and is converted into two-dimensional bar code form and is presented on display screen data, utilizes camera that then two-dimensional barcode information typing camera on display screen is read to decoding by code reader.
This arranges data is converted into two-dimensional barcode information with encoder, two-dimensional bar code is shown on display screen, utilize camera directly to gather two-dimensional barcode information, by code reader, read decoding, this method is when doing transfer of data, output element is display screen, input element is camera, between camera and display screen, there is certain image-forming range, image on collected by camera display screen is without other any physical mediums, therefore there is physically-isolated characteristic between the two, display screen can only output image and cannot be received any signal, camera can only gather image and cannot send any signal, so there is irreversible property from element operation principle, therefore this mode safe class is very high, can in the process of transmission, there is not any risk.
The present invention solves the technical scheme that further technical problem adopts: a kind of contactless reading code switch, comprise the code reader that can data be carried out two-dimensional encoded encoder, can two-dimensional bar code be decoded, also comprise at least one isolated transmission module, isolated transmission module comprises at least one display screen, at least one camera, the input of display screen is connected with the output of encoder, the output of camera is connected with the input of code reader, camera setting corresponding to display screen, display location is on the image-forming range of camera.
This arranges the isolated transmission module of utilizing camera and display screen to form and carrys out signal transmission, because display screen is unidirectional output element, and camera is unidirectional input element, therefore in transmitting procedure, there is not the reverse transmission of signal, guaranteed the unidirectional characteristic of data, simultaneously due to camera only at image-forming range at the image that can collect on display screen, therefore between two elements, be not contact, the physical isolation characteristic of having reached coverage, guarantees the fail safe of whole contactless reading code switch.
The further setting of the present invention is: described display screen can be projecting apparatus, electronic display, wherein one or more of simulating display screen.
This arrange selection for display screen conventional be chosen as projecting apparatus, LED display, LCD display etc., but almost all electronic display and simulating display screen can be replaced or be used in combination.
The further setting of the present invention is: described camera is digital camera or analogue camera.
This arranges the selection for camera, conventionally be exactly digital camera and analogue camera, the reading code form of common code reader is that digital signal is directly decoded, if analogue camera, code reader will first carry out decoding after analog-to-digital conversion to analog signal again.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the present embodiment;
Embodiment
A kind of non-contact data transmission method of the present invention, its method is, encoder is encoded and is converted into two-dimensional bar code form and is presented on display screen data, utilizes camera that then two-dimensional barcode information typing camera on display screen is read to decoding by code reader.
Known with reference to figure 1, a kind of contactless reading code switch corresponding with said method, comprise and can carry out two-dimensional encoded encoder to data, the code reader that can decode to two-dimensional bar code, also comprise at least one isolated transmission module, isolated transmission module comprises at least one display screen, at least one camera, the input of display screen is connected with the output of encoder, the output of camera is connected with the input of code reader, camera setting corresponding to display screen, display location is on the image-forming range of camera, described display screen can be projecting apparatus, electronic display, wherein one or more of simulating display screen, and described camera is digital camera or analogue camera.
Certainly the present invention is when expansion is used, and the mode that increases bandwidth has three kinds, and the first is in the display screen of an isolated transmission module, shows a plurality of two-dimensional bar codes simultaneously, and a plurality of cameras are installed, and forms a plurality of transmissions, thereby increases transmission bandwidth; The second is by using a plurality of isolated transmission module, thereby increases transmission bandwidth, and the third mode is to increase bandwidth by a plurality of cameras are set with coordinating of a plurality of display screens.
In 2D bar code technology in the present invention, can use ordinary two dimensional bar code, also can use the two-dimensional bar code of other type: in barcode types, can also use stack and the matrix two-dimensional barcode of other types to replace QR bar code, as PDF417, DataMatrix etc., all be fine.
Can certainly use composite coloured 2D bar code technology: (what use at present is single color two-dimension bar code, be black and white), encoder can, using one or more monochromatic bar codes as a Color Channel, be exported with the two-dimensional bar code that other Color Channel image being comprised of one or more monochromatic bar codes is synthetic composite coloured; Code reader collects after composite coloured two-dimensional bar code, by separate colors passage, obtains one or more monochromatic bar code images, thereby increases the packing density of image.
In concrete use, encoder can directly be implanted in inner net computer, and code reader can be implanted in outer net computer, thereby completes sound cross network transmission.
Obviously, above-described embodiment is only used to done giving an example is clearly described, and the not restriction to execution mode.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being extended out thus or change are still in protection scope of the present invention.
Claims (4)
1. a non-contact data transmission method, its method is as follows:
Encoder is encoded and is converted into two-dimensional bar code form and is presented on display screen data, utilizes camera that then two-dimensional barcode information typing camera on display screen is read to decoding by code reader.
2. a contactless reading code switch, comprise the code reader that can data be carried out two-dimensional encoded encoder, can two-dimensional bar code be decoded, it is characterized in that: also comprise at least one isolated transmission module, isolated transmission module comprises at least one display screen, at least one camera, the input of display screen is connected with the output of encoder, the output of camera is connected with the input of code reader, camera setting corresponding to display screen, and display location is on the image-forming range of camera.
3. according to contactless reading code switch claimed in claim 2, it is characterized in that: described display screen can be projecting apparatus, electronic display, wherein one or more of simulating display screen.
4. according to the contactless reading code switch described in claim 2 or 3, it is characterized in that: described camera is digital camera or analogue camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310485989.5A CN103532880A (en) | 2013-10-16 | 2013-10-16 | Non-contact type data transmission method and non-contact type code reading switcher |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310485989.5A CN103532880A (en) | 2013-10-16 | 2013-10-16 | Non-contact type data transmission method and non-contact type code reading switcher |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2927186A1 (en) * | 2014-04-02 | 2015-10-07 | Linde Material Handling GmbH | Method and system for operating an industrial truck |
| US9984264B2 (en) | 2015-10-29 | 2018-05-29 | Industrial Technology Research Institute | Data transmission apparatus, data read apparatus, data encoding and decoding apparatus, and method thereof for patternized data |
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| CN1845124A (en) * | 2006-05-16 | 2006-10-11 | 北京紫光捷通科技有限公司 | Color information superposition of QR code |
| CN102857619A (en) * | 2011-06-28 | 2013-01-02 | 捷达世软件（深圳）有限公司 | Sharing method and system of electronic business card |
| CN103263294A (en) * | 2013-04-22 | 2013-08-28 | 刘梦阳 | Health indicator parameter detection instrument, device and system |
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2013
- 2013-10-16 CN CN201310485989.5A patent/CN103532880A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845124A (en) * | 2006-05-16 | 2006-10-11 | 北京紫光捷通科技有限公司 | Color information superposition of QR code |
| CN102857619A (en) * | 2011-06-28 | 2013-01-02 | 捷达世软件（深圳）有限公司 | Sharing method and system of electronic business card |
| CN103263294A (en) * | 2013-04-22 | 2013-08-28 | 刘梦阳 | Health indicator parameter detection instrument, device and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2927186A1 (en) * | 2014-04-02 | 2015-10-07 | Linde Material Handling GmbH | Method and system for operating an industrial truck |
| US9984264B2 (en) | 2015-10-29 | 2018-05-29 | Industrial Technology Research Institute | Data transmission apparatus, data read apparatus, data encoding and decoding apparatus, and method thereof for patternized data |
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Application publication date: 20140122 |