CN102622627A - Barcode coding method suitable for low-cost code scanning equipment - Google Patents
Barcode coding method suitable for low-cost code scanning equipment Download PDFInfo
- Publication number
- CN102622627A CN102622627A CN2012100421389A CN201210042138A CN102622627A CN 102622627 A CN102622627 A CN 102622627A CN 2012100421389 A CN2012100421389 A CN 2012100421389A CN 201210042138 A CN201210042138 A CN 201210042138A CN 102622627 A CN102622627 A CN 102622627A
- Authority
- CN
- China
- Prior art keywords
- coded
- complete
- bits
- code
- bar
- 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
Images
Abstract
The invention discloses a barcode coding method suitable for low-cost code scanning equipment. Strips, vacancies, coding bits, intervals, a plurality of complete codes, a pilot code and an exit code are defined at first, the pilot code is arranged at a first bit, the complete codes are arranged at middle bits, the exit code is arranged at a tail bit, the intervals are arranged among the complete codes, so that a coded graph is formed, and the complete codes are formed by means of granting numerical values. A numerical value granting method includes that a coding bit with the top vacancy and the bottom strip is 0, a coding bit with the top strip and the bottom vacancy is 1, a coding bit with the top strip and the bottom strip is 3, an internal is 0, and the numerical value of each complete code is N=2XX+2XY+Z. The coding bits utilizing the strips and the vacancies as features are basic elements, three corresponding coding bits are arrayed into each complete code, and a complete barcode is formed by the aid of the intervals, the pilot code and the exit code. The coding scheme is simple and attractive and is compact in structure. The quantity of components of a recognition device is low, cost is also low, recognition speed is fast, and the barcode coding method can meet low-cost barcode recognition requirements under most of conditions.
Description
Technical field
The present invention relates to bar codes technique, particularly sweep the barcode encoding method of decoding apparatus about a kind of suitable low cost.
Background technology
Bar codes technique is a kind of automatic identification technology that is widely used in fields such as commerce, postal service, taking care of books, storage, industry, traffic that in computer utility and practice, produces and grow up; Have high, the advantages such as cost is low, good reliability of high input speed, accuracy, in current automatic identification technology, occupy an important position.
Bar code forms multiple code system because of coding rule is different.Code system commonly used in the world has EAN bar code, upc bar code, two or five bar codes, intersect two or five bar codes, Ku Deba bar code, three nine-day periods after the winter solstice bar code and 128 bar codes etc., and on the commodity use the most often be exactly the EAN commodity bar code.
To convert the bar code that compiles out according to certain rule to significant information, need experience scanning and decipher two processes.The color of object is by its catoptrical type decided; White object can reflect the visible light of various wavelength, and black object then absorbs the visible light of various wavelength, and bar code is made up of the bar of white and black; So when light that the bar code scanner light source sends after reflection on the bar code; Reflected light shines on the inner photoelectric commutator of barcode scanner, and the reflected light signal that photoelectric commutator is different according to power converts corresponding electric signal to.Electric signal outputs to after the amplifying circuit enhancing signal of barcode scanner, delivers to shaping circuit again analog signal conversion is become digital signal.The informal voucher of bar code, the width of secret note difference; The time length that corresponding electric signal continues is also different; Code translator is differentiated bar and empty number through the number of measuring pulse digit electric signal 0,1 (secret note generally is referred to as bar then; Informal voucher generally is referred to as sky), differentiate bar and empty width through measuring the lasting time of 0,1 signal.This moment, resulting data remained rambling, know the information that bar code comprises, and according to the corresponding codes rule (for example: the EAN sign indicating number), change bar symbol into corresponding digital, character information then needed.At last, carry out data processing and management by computer system, the details of article just have been identified.
Existing bar code is because of the complicacy of its establishment rule, and its scanning device also correspondingly thickens, and cost is higher.Yard device of selling in the market of sweeping has a variety ofly, and they mainly exist different at aspects such as luminous wavelength, optical system structure, electric circuit construction, resolution, modes of operation, according to the difference of principle, mainly contains three kinds in light pen, CCD, laser scanning.Light pen is that a kind of hand-held contact that occurs is at first swept a yard device, and it also is the most economic a kind of yard device of sweeping.Even if like this, because it is a kind of relatively independent product, even do not comprise decoding scheme and corresponding program design thereof, cost also will add the decoding part at tens yuans, and cost is just higher.Therefore to the market demand, need a kind of simple coding of design, make the decoding scheme part of hardware simpler, adapt to the decoding apparatus of sweeping of lower cost.
Summary of the invention
For addressing the above problem, the object of the invention just provides a kind of product design that directly applies to, and is applicable to the barcode encoding method of low-cost scanning device.
The present invention is for realizing above-mentioned purpose, and take following technical scheme: a kind of suitable low cost is swept the barcode encoding method of decoding apparatus, is divided into following steps:
1) one section black region with certain width and height of definition is called bar;
Define one section with bar have same widths, the height white portion be called sky;
Define one section two bars, idle pattern by non-full sky and form the zone and be called bits of coded, overhead bar is down arranged, last bar is sky down, all is up and down three kinds of forms of bar;
Defining the white space that a section height, width all is not less than bits of coded is called at interval;
Definition is called a complete coding at a distance from the panel region that forms that is arranged side by side continuously by any 3 bits of coded;
Definition is called preamble code by the bits of coded of bar under a plurality of sky panel region that forms that is arranged side by side;
Definition is called end code by a plurality of intervals panel region that forms that is arranged side by side;
2) be the first place with a said preamble code; Several complete interpositions that are encoded to; End code is the position, end, be equipped be folded between every adjacent two complete codings, between complete coding and the preamble code, between complete coding and the end code several at interval, promptly constitute a coded graphics;
3) give encoded radio for said coded graphics:
The overhead bits of coded numerical value of bar down of definition is 0, and last bar empty bits of coded numerical value down is 1, all is up and down that the bits of coded numerical value of bar is 3; The numerical value at an interval of definition is 0;
Then the computing formula of the numerical value of N of a said complete coding is:
N=2×X+2×Y+Z，
Wherein, X, Y, Z refer to three bits of coded in the complete coding;
Then the encoded radio of said coded graphics is: a string tactic sum, and wherein, first, position, end all is 0, the centre is some tactic numerals;
4) with 2) coded graphics and 3 that obtains of step) go on foot the sum that obtains and combine, promptly constitute a complete bar code.
The width of above-mentioned preamble code is generally 2～4 complete code width; The width of end code is at least 4 interval widths.
The complete coding number that comprises in complete strips font code is 1～N, and N >=1 is generally got 2～9.
Above-mentioned complete coding has 27 kinds of arrangements; Can give up among the present invention that to contain upper and lower more than 2 all be 7 kinds of arrangements of bar form bits of coded; Giving up upper and lower all is bar form bits of coded and 8 kinds of arrangements that link to each other at interval; Give up two ends for overhead bar down, middlely be last a kind of arrangement of empty form bits of coded down, give up two ends and be last emptyly down, middle be overhead a kind of arrangement of bar form bits of coded down, leave and take remaining 10 kinds of arrangement as preferred.
Each bits of coded preferable width >=1.8mm, highly >=6mm.
Interval between per two complete codings is preferred >=2.2mm.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention is that the bits of coded of characteristic is the basic coding element with bar, sky; Per 3 bits of coded are arranged in a complete coding again; Be aided with between a plurality of complete codings at interval, add the end code of the first preamble code, position, end, finally constitute one group of complete bar code.This barcode encoding scheme, bar, idle pattern mode are scientific and reasonable, succinctly attractive in appearance; Compact conformation, the used electronic devices and components quantity of decoding apparatus of sweeping of this bar code is also lacked, and only needs upper and lower two synchronous linear sweeps of scanning head to get final product; Cost is low; Recognizer is efficient and accurate, and recognition speed is also very fast, can satisfy low-cost bar-code identification demand in most cases.2, the present invention filters out 10 kinds of complete codings as optimum code; And compose with numerical value 0～9 definition; Utilize these 10 complete codings as the basis, can carry out the gather of any amount and kind, but all be 0～9 these digital combinations finally; Therefore encoding when resolving, only need a simple algorithm program to resolve.3, because therefore the complete coding layout of optional any amount says that Barcode Length is not limited, and 2～3 complete coded combinations are good at least, and 8～9 complete coded combinations are good at most, and bits of coded is few more, sweep velocity is fast more.4, simultaneously, barcode encoding can adopt modularization, the required bar code of convenient generation.In sum, the barcode encoding method that provides, simple and easy to do, be suitable for promoting the use of, this is the relatively perfect barcode encoding scheme that is applicable to low-cost occasion of a cover.
Description of drawings
Fig. 1 is during bar code of the present invention is formed, bits of coded and form synoptic diagram at interval;
Fig. 2 is during bar code of the present invention is formed, the form synoptic diagram of preamble code and 10 kinds of complete codings;
Fig. 3 is the synoptic diagram of 7 kinds of complete coding forms that contain 2 above C form bits of coded of giving up of the present invention;
Fig. 4 is the C form bits of coded given up of the present invention before or the synoptic diagram of 8 kinds of last complete coding forms;
Fig. 5 is the ABA that gives up of the present invention, the synoptic diagram of two kinds of complete coding forms of BAB;
Fig. 6 is the instance graph of one group of complete strips font code.
Embodiment
Carry out detailed description below in conjunction with accompanying drawing and embodiment to of the present invention.
The present invention is a kind of barcode encoding method of bar code scan device design cheaply, and equipment is minimum only to need two scanning heads, according to certain speed scanning, just can obtain the different coding value through algorithm.
Be this coding method of clear interpretation, earlier relational language made an explanation:
Bar has certain width and one section black region highly, and is as shown in Figure 1.
Sky and bar have one section white portion of same widths and height, and be as shown in Figure 1.
Bits of coded forms a zone by bar, the idle pattern of upper and lower two sections non-full skies, and a kind of is overhead bar down, like the A form that defines among Fig. 1; A kind of is to go up bar sky down, like the B form that defines among Fig. 1; A kind of be upper and lower all be bar, like the C form that defines among Fig. 1.
At interval, one section white space, highly, width all is not less than the height, wide of bits of coded, like the W form among Fig. 1.
Complete coding, by the panel region that any 3 nonseptate bits of coded are arranged side by side and form, as shown in Figure 2.
Preamble code is a panel region empty, that combine for the bits of coded of bar down by a plurality of going up, and width is generally 2～4 complete code width and is advisable.
End code, by the panel region that a plurality of intervals combine, width is at least 4 interval widths.
A preamble code, several complete codings, an end code by above-mentioned definition; And be folded between every adjacent two complete codings, between complete coding and the preamble code, between complete coding and the end code several at interval; Just constitute a coded graphics, when giving the certain numerical value meaning for again this coded graphics, just constituted a complete bar code.
In the invention, preamble code is placed above the other things, and purpose is for recognition the starting position to be provided; After the preamble code, with an interval, a complete coding, an interval, the such order of complete coding are arranged in order down; Constitute Protean Code23 sign indicating number, not restriction of the number of complete coding here, 2～3 at least; 8～9 at most, but to have 1 at least.
Because the present invention forms a bits of coded with the bar of two sections non-full skies, idle pattern, rearrange a complete coding by 3 bits of coded again, so the application's called after Code23 sign indicating number.
As previously mentioned; Because bits of coded has A, B, three kinds of form (see figure 1)s of C, again because per 3 bits of coded are combined into a complete coding, so theoretically; The complete coding that 3 bits of coded are combined into should have 3 * 3 * 3=27 kind state; But reliability and standard recognizer in order to improve code identification have only kept 10 kinds of assembled state, and respectively with numerical value 0～9 definition; And the arrangement of these 10 kinds of assembled state is clocklike, so just can calculate encoded radio according to arranging situation easily.This 10 kinds of arrangements and corresponding codes value, as shown in Figure 2, be respectively AAA, AAB, BAA, ABB, BBA, BBB, ACA, ACB, BCA, BCB, encoded radio is represented with 0～9 by said sequence successively.
Can find out from top arrangement; The arrangement that contains 2 above C form bits of coded does not all have to adopt; This is that black content is too much in the complete coding because it is two sections combinations that are bar that C arranges, and two feasible difficulties that become of discerning of continuous C combination; So following 7 kinds of arrangements all will not be adopted: CCC, CCA, CCB, CAC, CBC, ACC, BCC, as shown in Figure 3.
In addition; C form bits of coded is if in the position that links to each other with the interval; When the recognition speed of two optoelectronic switches is inconsistent; Cause easily before the C or after mistake form A or B maybe, so C before perhaps last following 8 kinds of arrangements do not adopt yet: CAA, CAB, CBA, CBB, AAC, ABC, BAC, BBC, as shown in Figure 4.
ABA, two kinds of arrangements of BAB also are unfavorable for discerning owing to change too much, and are as shown in Figure 5, also should remove.Therefore give up 17 kinds of arrangements altogether, just only remaining aforementioned 10 kinds of arrangements are used for numeral 0～9 coding.
Even if 10 kinds of remaining available arrangements also are to encode with numerical value 0～9 through elaborately planned, this arrangement makes the algorithm after the identification be able to simplify, and can more easily calculate the coding value corresponding.The coding assignment rule is following:
Each complete coding is arranged in a combination by the three kinds of bits of coded of A, B, C like Fig. 1, regulation A=0, B=1, C=3; The computing formula of the numerical value of N of then a certain complete coding " XYZ " is: N=2 * X+2 * Y+Z.
For example: for AAA, then N=2 * A+2 * A+A=2 * 0+2 * 0+0=0, i.e. AAA=0;
For BAA, then N=2 * B+2 * A+A=2 * 1+2 * 0+0=2, i.e. BAA=2;
For BBB, then N=2 * B+2 * B+B=2 * 1+2 * 1+1=5, i.e. BBB=5;
For ACB, then N=2 * A+2 * C+B=2 * 0+2 * 3+1=7, i.e. ACB=7.
10 kinds of optional arrangements with numerical value 0～9 coding, just are: 0=AAA, 1=AAB, 2=BAA, 3=ABB, 4=BBA, 5=BBB, 6=ACA, 7=ACB, 8=BCA, 9=BCB.
In fact, above-mentioned 17 kinds of arrangements giving up also can be calculated with following formula, just do not give employing in the reality.
Owing to be a white portion that forms by upper and lower two sections idle patterns at interval, so the numerical value that can define an interval is 0; Again because bar code is with such tactic in an interval, complete coding, so can define as module with an adjacent interval and a complete coding as one group, the actual coding value does not change, such as,
AAA=0，WAAA=0；
AAB=1，WAAB=1；
BAA=2，WBAA=2；
ABB=3，WABB=3；
BBA=4，WBBA=4；
BBB=5，WBBB=5；
ACA=6，WACA=6；
ACB=7，WACB=7；
BCA=8，WBCA=8；
BCB=9，WBCB=9。
In like manner, preamble code: AAA ... AAA=0; End code: WWW ... WWW=0.
Therefore; Whole bar code is just by the preamble code of first place and the end code of position, end; And the interval of middle any amount and complete coded combination constitute, and by a string tactic numeral as its encoded radio, as shown in Figure 6; Wherein first, position, end all is 0, and middle numeral arranges, makes up relevant with complete coding.
Certainly, owing to consider the cost problem of scanning device, according to optoelectronic scanning probe self characteristics; Bits of coded of the present invention adopts the wide high design that waits; Each bits of coded width is not less than 1.8mm, highly is not less than 6mm and is advisable with 6mm, and arranging like this is in order to guarantee that bar code scan equipment reads the empty information of bar more reliably; Also reduced simultaneously requirement, made the degree of accuracy of printing be controlled at the 1mm scope and get final product bar code printing.Per 3 bits of coded form a complete coding, and the interval between the complete coding is not less than 2.2mm, if add that by 4 complete codings the bar code that preamble code and end code are formed just can be controlled in the length range of 55mm like this.Bar code length also is difficult for long, in order to avoid cause sweep time long.
When reading, with scanning head with certain speed along bar code from the beginning to the end direction move and can obtain complete bar code information, this moving process can also can be accomplished through certain mechanical hook-up is auxiliary through manually realizing.The speed that moves is unsuitable too fast, otherwise can't obtain bar code information accurately.
This coding method can use cheaply barcode recognition equipment just can distinguish; Two optoelectronic switches that identification division only need be arranged on the line are formed probe, and the two sections bars or the empty combination of corresponding bits of coded scan with certain speed; When popping one's head in the inswept bar code of certain speed; The bar of each bits of coded or sky make optoelectronic switch generation change in voltage, and the corresponding A/D conversion port of the output of optoelectronic switch and microprocessor links to each other, and microprocessor is at first according to the level change records bar of OUT end, empty situation of change; Recognize the different coding form, just can obtain the respective coding value according to the simple calculations rule again.
The present invention has made breakthrough trial; Design a kind of encoding scheme that simply comprises 0～9 numeral; Two optoelectronic switches that identification division only need be arranged on the line are formed probe, recognize the different coding form, just can obtain the respective coding value according to the simple calculations rule again.The probe segment circuit is simple, and is cheap, realized the purpose of design of low cost bar code.
What be worth explanation is that the foregoing description only is used to explain the present invention; Wherein other drawing up a plan all can change to some extent; But, every equivalents of on the basis of technical scheme of the present invention, carrying out or improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. barcode encoding method that suitable low cost is swept decoding apparatus is characterized in that:
1) one section black region with certain width and height of definition is called bar;
Define one section with bar have same widths, the height white portion be called sky;
Define one section two bars, idle pattern by non-full sky and form the zone and be called bits of coded, overhead bar is down arranged, last bar is sky down, all is up and down three kinds of forms of bar;
Defining the white space that a section height, width all is not less than bits of coded is called at interval;
Definition is called a complete coding at a distance from the panel region that forms that is arranged side by side continuously by any 3 bits of coded;
Definition is called preamble code by the bits of coded of bar under a plurality of sky panel region that forms that is arranged side by side;
Definition is called end code by a plurality of intervals panel region that forms that is arranged side by side;
2) be the first place with a said preamble code; Several complete interpositions that are encoded to; End code is the position, end, be equipped be folded between every adjacent two complete codings, between complete coding and the preamble code, between complete coding and the end code several at interval, promptly constitute a coded graphics;
3) give encoded radio for said coded graphics:
The overhead bits of coded numerical value of bar down of definition is 0, and last bar empty bits of coded numerical value down is 1, all is up and down that the bits of coded numerical value of bar is 3; The numerical value at an interval of definition is 0;
Then the computing formula of the numerical value of N of a said complete coding is:
N=2×X+2×Y+Z，
Wherein, X, Y, Z refer to three bits of coded in the complete coding;
Then the encoded radio of said coded graphics is: a string tactic sum, and wherein, first, position, end all is 0, the centre is some tactic numerals;
4) with 2) coded graphics and 3 that obtains of step) go on foot the sum that obtains and combine, promptly constitute a complete bar code.
2. suitable low cost as claimed in claim 1 is swept the barcode encoding method of decoding apparatus, it is characterized in that: the width of said preamble code is 2～4 complete code width; The width of said end code is at least 4 interval widths.
3. suitable low cost as claimed in claim 1 is swept the barcode encoding method of decoding apparatus, it is characterized in that: the complete coding number that comprises in complete strips font code is 1～N, N >=1.
4. suitable low cost as claimed in claim 2 is swept the barcode encoding method of decoding apparatus, it is characterized in that: the complete coding number that comprises in complete strips font code is 1～N, N >=1.
5. the barcode encoding method of sweeping decoding apparatus like claim 1 or 2 or 3 or 4 described suitable low costs; It is characterized in that: said complete coding has 27 kinds of arrangements; Give up that to contain upper and lower more than 2 all be 7 kinds of arrangements of bar form bits of coded; Giving up upper and lower all is bar form bits of coded and 8 kinds of arrangements that link to each other at interval; Give up two ends for overhead bar down, middlely be last a kind of arrangement of empty form bits of coded down, give up two ends and be last empty down, middle for overhead a kind of arrangement of bar form bits of coded down, leave and take remaining 10 kinds of arrangement.
6. the barcode encoding method of sweeping decoding apparatus like claim 1 or 2 or 3 or 4 described suitable low costs is characterized in that: each said bits of coded width >=1.8mm, highly >=6mm.
7. suitable low cost as claimed in claim 5 is swept the barcode encoding method of decoding apparatus, it is characterized in that: each said bits of coded width >=1.8mm, highly >=6mm.
8. the barcode encoding method of sweeping decoding apparatus like claim 1 or 2 or 3 or 4 or 7 described suitable low costs is characterized in that: the interval >=2.2mm between per two said complete codings.
9. suitable low cost as claimed in claim 5 is swept the barcode encoding method of decoding apparatus, it is characterized in that: the interval >=2.2mm between per two said complete codings.
10. suitable low cost as claimed in claim 6 is swept the barcode encoding method of decoding apparatus, it is characterized in that: the interval >=2.2mm between per two said complete codings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100421389A CN102622627A (en) | 2012-02-23 | 2012-02-23 | Barcode coding method suitable for low-cost code scanning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100421389A CN102622627A (en) | 2012-02-23 | 2012-02-23 | Barcode coding method suitable for low-cost code scanning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102622627A true CN102622627A (en) | 2012-08-01 |
Family
ID=46562537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100421389A Pending CN102622627A (en) | 2012-02-23 | 2012-02-23 | Barcode coding method suitable for low-cost code scanning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102622627A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716637A (en) * | 2016-03-10 | 2016-06-29 | 华中科技大学 | Optical encoder |
| CN105740930A (en) * | 2016-02-02 | 2016-07-06 | 福建省星微盾电子科技有限公司 | Photo-magnetically readable barcode coding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080075A (en) * | 1992-06-12 | 1993-12-29 | 孙弘勋 | Numeral-the bar code of general man-machine and treatment technology thereof |
| US20050236487A1 (en) * | 2004-04-22 | 2005-10-27 | Kuter Kaner | Practical mobile data collecction and processing system with bar-coded tally ruler |
| CN102024378A (en) * | 2009-09-11 | 2011-04-20 | 郑阿奇 | Method for hiding anti-counterfeiting data in bar codes |
-
2012
- 2012-02-23 CN CN2012100421389A patent/CN102622627A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080075A (en) * | 1992-06-12 | 1993-12-29 | 孙弘勋 | Numeral-the bar code of general man-machine and treatment technology thereof |
| US20050236487A1 (en) * | 2004-04-22 | 2005-10-27 | Kuter Kaner | Practical mobile data collecction and processing system with bar-coded tally ruler |
| CN102024378A (en) * | 2009-09-11 | 2011-04-20 | 郑阿奇 | Method for hiding anti-counterfeiting data in bar codes |
Non-Patent Citations (2)
| Title |
|---|
| 何军等: "条形码的计算机编码与识别", 《计算机测量与控制》 * |
| 佚名: "Barcode", 《HTTP://EN.WIKIPEDIA.ORG/W/INDEX.PHP?TITLE=BARCODE&OLDID=477364655》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105740930A (en) * | 2016-02-02 | 2016-07-06 | 福建省星微盾电子科技有限公司 | Photo-magnetically readable barcode coding method |
| CN105740930B (en) * | 2016-02-02 | 2018-07-06 | 福建省星微盾电子科技有限公司 | It is a kind of can optomagnetic recognition barcode encoding method |
| CN105716637A (en) * | 2016-03-10 | 2016-06-29 | 华中科技大学 | Optical encoder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5959285A (en) | Two-dimensional bar code symbology using gray code encodation scheme | |
| CN101916387B (en) | Three-dimensional barcode label and manufacturing method thereof | |
| US20040026511A1 (en) | Guiding a scanning device to decode 2D symbols | |
| US5124537A (en) | Omnidirectional bar code reader using virtual scan of video raster scan memory | |
| US6024289A (en) | Method and apparatus for encoding and decoding single byte characters in double byte character set of machine-readable symbologies, such as bar code symbologies | |
| US20050194444A1 (en) | System for encoding information using colors | |
| CN101833641B (en) | Bar code decoding chip | |
| JPH03204793A (en) | Non volatile electrooptic type read -only memory in high-density two- dimensional symbolic display method | |
| CN102622627A (en) | Barcode coding method suitable for low-cost code scanning equipment | |
| US5237163A (en) | Method for scanning a plurality of bar code labels | |
| CN105279539A (en) | Dot-matrix two-dimensional code coding and decoding | |
| JPH0354388B2 (en) | ||
| WO1998047101A2 (en) | Robust machine-readable symbology and method and apparatus for printing and reading same | |
| JPH09504633A (en) | Apparatus and method for 16-bit and numerical data collection using bar code symbology | |
| CN104217189A (en) | Self-learning identification method of barcode used for test strip | |
| CN101908126A (en) | PDF417 bar code decoding chip | |
| CN101833643B (en) | Decoding chip for compound-code barcode | |
| CN101369317A (en) | Method for generating simple recognition code based on serial number conversion in bill system | |
| KR200340332Y1 (en) | Apparatus for reading bar-code in vehicles painting line system | |
| TW297889B (en) | ||
| JP2001256425A (en) | Optical information reader | |
| JPH09274637A (en) | Two-dimensional code reader | |
| KR100622459B1 (en) | Apparatus and method for reading bar-code in vehicles painting line system | |
| CA1070837A (en) | Coded record and method of and system for interpreting the record | |
| JP4111804B2 (en) | Binary signal conversion method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |