CN109409460A - A method of list data is transmitted using two dimensional code - Google Patents
A method of list data is transmitted using two dimensional code Download PDFInfo
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- CN109409460A CN109409460A CN201811241031.0A CN201811241031A CN109409460A CN 109409460 A CN109409460 A CN 109409460A CN 201811241031 A CN201811241031 A CN 201811241031A CN 109409460 A CN109409460 A CN 109409460A
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- Prior art keywords
- dimensional code
- data
- subinterval
- probability
- symbol
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
Abstract
The invention discloses a kind of methods using two dimensional code transmission list data, belong to field of data transmission, include the following steps: the unit information for removing blank in table；The identical cell of data in table is merged, a numerical value is only recorded, other cells only record line information；Lossless compression is carried out to initial data；Generate two dimensional code；The two dimensional code generated using two-dimensional code scanning tool scans；It is decoded to obtain the data in two dimensional code to the two dimensional code of scanning.Unit information of the present invention blank in list data removal table, the identical cell of data in table is merged, only record a numerical value, other cells only record line information, carry out lossless compression to initial data, generate two dimensional code, the two dimensional code generated using two-dimensional code scanning tool scans, it is decoded to obtain the data in two dimensional code to the two dimensional code of scanning, changes existing data transfer mode, keep data transmission more convenient.
Description
Technical field
The present invention relates to a kind of methods for transmitting list data, transmit list data using two dimensional code more particularly to a kind of
Method, belong to field of data transmission.
Background technique
In the daily work, it is often necessary to form document is transmitted between different devices, but many times, due to hard
The limitation of part condition or network problem, can not establish physical connection between different devices, cause file that can not transmit, with
Smart phone it is universal, two dimensional code is widely used, and by planar bar code technology, the data of form document may be implemented
Transmission, the big feature of the one of list data is format specification, and the data of each cell correspond to fixed columns and rows, so
It only needs cell data and line information to be recorded and are stored in two dimensional code, then is scanned the two-dimensional code with smart machine and be can be obtained pair
The data answered.
Summary of the invention
The main object of the present invention is to provide for a kind of method using two dimensional code transmission list data, utilizes two dimensional code
The transmission for realizing data, changes existing data transfer mode, keeps data transmission more convenient.
The purpose of the present invention can reach by using following technical solution:
A method of list data is transmitted using two dimensional code, which comprises the steps of:
Step 1: the unit information of blank in removal table；
Step 2: the identical cell of data in table being merged, a numerical value is only recorded, other cells are only remembered
Record line information；
Step 3: lossless compression is carried out to initial data；
Step 4: generating two dimensional code；
Step 5；The two dimensional code generated using two-dimensional code scanning tool scans；
Step 6: being decoded to obtain the data in two dimensional code to the two dimensional code of scanning.
Further, lossless compression mode programs in step 3 for Huffman encoding mode or arithmetic, and the lossless pressure of step 3
Contracting can repeatedly be compressed.
Further, Huffman encoding is forced coding, and its step are as follows；
Step 21: source symbol is pressed into probability descending order；
Step 22: two the smallest probability being added up, the probability as new symbol；
Step 23: above-mentioned two step is repeated, until the sum of probability reaches 1；
Step 24: when merging message every time, assigning the message being merged to 1 and 0 or imparting 0 and 1；
Step 25: finding from each source symbol to probability for 1 road and pass through, record road through upper 1 and 0；
Step 26: each symbol is write out from the root of code tree to destination node 1,0 sequence.
Further, arithmetic coding is a kind of binary coding, and this coding method is the case where not considering information source statistics
Under, as long as monitoring the frequency that a bit of time inner code word occurs, regardless of statistics is stable or non-stationary, the code rate of coding is total
Can level off to information source entropy, the encryption algorithm of each iteration only handles a data symbol, and only arithmetical operation, to two into
For system coding, there are two source symbols.
Further, in the primary stage of arithmetic coding, maximum probability Pe and small probability Qe can be set, then to encoded
Bitstream symbol is judged that its step are as follows:
Step 31: setting coding initialization subinterval as [0,1], Qe is counted from 0, then Pe=1-Qe；
Step 32: determining subinterval initial position: subinterval initial position=preceding subinterval length+current sign area
Between the preceding subinterval length of left end X；
Step 33: determining new subinterval length: the probability of new subinterval length=preceding subinterval length X current sign；
Step 34: with the input of data symbol stream encoded, subinterval is gradually reduced；
Step 35: digit needed for the subinterval length finally obtained determines a certain number indicated in the region.
Further, step 4, which can be split data, generates multiple two dimensional codes.
Further, the two dimensional code that step 4 generates can be reserved for as picture.
Advantageous effects of the invention:
Method using two dimensional code transmission list data of the invention believes the unit of blank in list data removal table
Breath, merges the identical cell of data in table, only records a numerical value, other cells only record line information,
Lossless compression is carried out to initial data, generates two dimensional code, the two dimensional code generated using two-dimensional code scanning tool scans, to scanning
Two dimensional code is decoded to obtain the data in two dimensional code, changes existing data transfer mode, keeps data transmission more convenient.
Detailed description of the invention
Fig. 1 is a preferred embodiment schematic diagram of the method according to the invention that list data is transmitted using two dimensional code；
Specific embodiment
To make the more clear and clear technical solution of the present invention of those skilled in the art, below with reference to examples and drawings
The present invention is described in further detail, and embodiments of the present invention are not limited thereto.
As shown in Figure 1, the method provided in this embodiment using two dimensional code transmission list data, includes the following steps:
Step 1: the unit information of blank in removal table；
Step 2: the identical cell of data in table being merged, a numerical value is only recorded, other cells are only remembered
Record line information；
Data record format are as follows: cell identifies 1 cell mark 2 ... | cell data.
Such as the data in A1, B2 cell are " aabb ", then data record are as follows:
" A1B2 | aabb " uses comma as separator between every data record.
Step 3: lossless compression is carried out to initial data；
Step 4: generating two dimensional code；
Step 5；The two dimensional code generated using two-dimensional code scanning tool scans；
Step 6: being decoded to obtain the data in two dimensional code to the two dimensional code of scanning.
In the present embodiment, as shown in Figure 1, lossless compression mode is that Huffman encoding mode or arithmetic program in step 3,
And step 3 lossless compression can repeatedly compress.
In the present embodiment, as shown in Figure 1, Huffman encoding is forced coding, its step are as follows；
Step 21: source symbol is pressed into probability descending order；
Step 22: two the smallest probability being added up, the probability as new symbol；
Step 23: above-mentioned two step is repeated, until the sum of probability reaches 1；
Step 24: when merging message every time, assigning the message being merged to 1 and 0 or imparting 0 and 1；
Step 25: finding from each source symbol to probability for 1 road and pass through, record road through upper 1 and 0；
Step 26: each symbol is write out from the root of code tree to destination node 1,0 sequence.
In the present embodiment, as shown in Figure 1, arithmetic coding is a kind of binary coding, this coding method is not consider
In the case that information source counts, as long as monitoring the frequency that a bit of time inner code word occurs, regardless of statistics is stable or non-stationary
, the code rate of coding can level off to information source entropy, and the encryption algorithm of each iteration only handles a data symbol, and only
Arithmetical operation, for binary coding, there are two source symbols.In the primary stage of arithmetic coding, one can be set probably
Rate Pe and small probability Qe, then judges that its step are as follows to bitstream symbol encoded:
Step 31: setting coding initialization subinterval as [0,1], Qe is counted from 0, then Pe=1-Qe；
Step 32: determining subinterval initial position: subinterval initial position=preceding subinterval length+current sign area
Between the preceding subinterval length of left end X；
Step 33: determining new subinterval length: the probability of new subinterval length=preceding subinterval length X current sign；
Step 34: with the input of data symbol stream encoded, subinterval is gradually reduced；
Step 35: digit needed for the subinterval length finally obtained determines a certain number indicated in the region.
In the present embodiment, as shown in Figure 1, step 4, which can be split data, generates multiple two dimensional codes.
In the present embodiment, as shown in Figure 1, the two dimensional code that step 4 generates can be reserved for as picture.
To sum up, in the present embodiment, identical to data in table the unit information of blank in list data removal table
Cell merge, only record a numerical value, other cells only record line information, carry out lossless pressure to initial data
Contracting generates two dimensional code, the two dimensional code generated using two-dimensional code scanning tool scans.The two dimensional code of scanning is decoded to obtain two
The data in code are tieed up, existing data transfer mode is changed, keep data transmission more convenient.
More than, further embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Within the scope of the present disclosure, according to the technique and scheme of the present invention and its design is subject to those skilled in the art
With replacement or change, belongs to protection scope of the present invention.
Claims (7)
1. a kind of method using two dimensional code transmission list data, which comprises the steps of:
Step 1: the unit information of blank in removal table；
Step 2: the identical cell of data in table being merged, a numerical value is only recorded, other cells only record row
Column information；
Step 3: lossless compression is carried out to initial data；
Step 4: generating two dimensional code；
Step 5；The two dimensional code generated using two-dimensional code scanning tool scans；
Step 6: being decoded to obtain the data in two dimensional code to the two dimensional code of scanning.
2. a kind of method using two dimensional code transmission list data according to claim 1, which is characterized in that in step 3
Lossless compression mode is that Huffman encoding mode or arithmetic program, and step 3 lossless compression can repeatedly compress.
3. a kind of method using two dimensional code transmission list data according to claim 2, which is characterized in that Huffman is compiled
Code is forced coding, and its step are as follows；
Step 21: source symbol is pressed into probability descending order；
Step 22: two the smallest probability being added up, the probability as new symbol；
Step 23: above-mentioned two step is repeated, until the sum of probability reaches 1；
Step 24: when merging message every time, assigning the message being merged to 1 and 0 or imparting 0 and 1；
Step 25: finding from each source symbol to probability for 1 road and pass through, record road through upper 1 and 0；
Step 26: each symbol is write out from the root of code tree to destination node 1,0 sequence.
4. a kind of method using two dimensional code transmission list data according to claim 2, which is characterized in that arithmetic coding
It is a kind of binary coding, this coding method is in the case where not considering information source statistics, as long as monitoring a bit of time Internal Code
The frequency that word occurs, regardless of statistics is stable or non-stationary, the code rate of coding can level off to information source entropy, each iteration
Encryption algorithm only handle a data symbol, and only arithmetical operation, for binary coding, source symbol only has two
It is a.
5. a kind of method using two dimensional code transmission list data according to claim 4, which is characterized in that compiled in arithmetic
The primary stage of code, maximum probability Pe and small probability Qe can be set, then bitstream symbol encoded is judged, step
It is as follows:
Step 31: setting coding initialization subinterval as [0,1], Qe is counted from 0, then Pe=1-Qe；
Step 32: determine subinterval initial position: subinterval initial position=preceding subinterval length+current sign section is left
Hold the preceding subinterval length of X；
Step 33: determining new subinterval length: the probability of new subinterval length=preceding subinterval length X current sign；
Step 34: with the input of data symbol stream encoded, subinterval is gradually reduced；
Step 35: digit needed for the subinterval length finally obtained determines a certain number indicated in the region.
6. a kind of method using two dimensional code transmission list data according to claim 1, which is characterized in that step 4 can
Data are split and generate multiple two dimensional codes.
7. a kind of method using two dimensional code transmission list data according to claim 1, which is characterized in that step 4 is raw
At two dimensional code can be reserved for as picture.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110011993A (en) * | 2019-03-25 | 2019-07-12 | 浩云科技股份有限公司 | A kind of two dimensional code big data safe transmission device based on dynamic multi-level encryption and decryption |
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| CN103177281A (en) * | 2013-04-12 | 2013-06-26 | 江苏圆坤二维码研究院有限公司 | Two-dimensional code compiling method |
| CN104899630A (en) * | 2015-06-18 | 2015-09-09 | 桂林电子科技大学 | Method of encoding/decoding color QR code |
| CN105550727A (en) * | 2015-12-22 | 2016-05-04 | 艾体威尔电子技术(北京)有限公司 | Method for making electronic receipts by using two-dimensional technology |
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| CN101206707A (en) * | 2006-12-21 | 2008-06-25 | 佳能株式会社 | Form editing apparatus, control method, and storage medium |
| CN103177281A (en) * | 2013-04-12 | 2013-06-26 | 江苏圆坤二维码研究院有限公司 | Two-dimensional code compiling method |
| CN104899630A (en) * | 2015-06-18 | 2015-09-09 | 桂林电子科技大学 | Method of encoding/decoding color QR code |
| CN105550727A (en) * | 2015-12-22 | 2016-05-04 | 艾体威尔电子技术(北京)有限公司 | Method for making electronic receipts by using two-dimensional technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110011993A (en) * | 2019-03-25 | 2019-07-12 | 浩云科技股份有限公司 | A kind of two dimensional code big data safe transmission device based on dynamic multi-level encryption and decryption |
| CN110011993B (en) * | 2019-03-25 | 2021-07-27 | 浩云科技股份有限公司 | Two-dimensional code big data safety transmission device based on developments multistage encryption and decryption |
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Application publication date: 20190301 |