CN201927032U - RSS (reduced space symbology) barcode decoding chip - Google Patents
RSS (reduced space symbology) barcode decoding chip Download PDFInfo
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- CN201927032U CN201927032U CN2010202126800U CN201020212680U CN201927032U CN 201927032 U CN201927032 U CN 201927032U CN 2010202126800 U CN2010202126800 U CN 2010202126800U CN 201020212680 U CN201020212680 U CN 201020212680U CN 201927032 U CN201927032 U CN 201927032U
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- barcode
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Abstract
The utility model provides an RSS (reduced space symbology) barcode decoding chip which comprises a scanning module for generating scanned coordinates, a border identification module for obtaining bar space boarder points of a barcode image, a direction identification module for obtaining the direction of a barcode, a bar space boarder processing module for obtaining the bar space boarders according to the direction of the barcode, a search characteristic identification module for obtaining symbolic parameters according to the bar space borders, a symbolic character acquisition module for obtaining a symbolic character of RSS barcode fragments by computation, a decoding fragment memory for storing the symbolic character of the RSS barcode fragment combinations, an RSS barcode combination logic judgment module for obtaining a symbolic character of complete RSS barcode fragment combinations in accordance with the decoding standard, and a decoding module for carrying out error check and decoding and further obtaining barcode information. The RSS barcode decoding chip obtains the symbolic character of the complete RSS barcode fragment combinations by splicing various barcode fragment combinations and further improves the reading and identification rate and the decoding success rate of RSS barcodes.
Description
[technical field]
The utility model relates to a kind of bar-code decoder, relates in particular to a kind of RSS bar code decoding chip.
[background technology]
Barcode technology is an appearance coding, printing, identification, the data acquisition and processing (DAP) emerging technology that grows up on computer technology and infotech basis.Barcode technology is because its identification is quick, accurate, reliable and low cost and other advantages, be widely used in fields such as commerce, taking care of books, storage, post and telecommunications, traffic and Industry Control, and certainly will in " Internet of Things " that rise gradually used, bring into play great function.
The bar code that is widely used at present comprises bar code and two-dimensional bar code.Bar code claims linear bar code to be made up of a plurality of " bars " that are arranged in parallel and " sky " unit again, and bar code information is expressed by bar and empty different in width and position.Bar code is not then expressed any information just in a direction (generally being horizontal direction) expressing information in vertical direction.
RSS (Reduced Space Symbology) bar code is to be unified the bar code symbol of the UCC of code council exploitation by the EAN of International Article Numbering Association and the U.S..Compare with other bar code, RSS serial codes fixture has higher density, so it can represent more character.
As depicted in figs. 1 and 2, the RSS bar code generally comprises the barcode fragment that left side sign indicating number speech+search characteristics (Finder)+right side sign indicating number speech is formed.A RSS bar code can comprise maximum 11 barcode fragment, and the search characteristics in each barcode fragment (Finder) has nothing in common with each other.According to ISO_IEC 24724-2006 international standard, the search characteristics in the RSS bar-code structure (Finder) can comprise array configuration as shown in Figure 2.
Yet, because the RSS bar code is formed by a plurality of barcode fragment combination, can't obtain whole RSS bar code information by single image, cause the recognition rate of RSS bar code to reduce.
[summary of the invention]
For solving the lower problem of recognition rate of RSS bar code in the prior art, the utility model provides a kind of RSS bar code decoding chip, and it has improved the recognition rate of RSS bar code and be decoded into power by splicing various barcode fragment combination.
The utility model provides a kind of RSS bar code decoding chip, comprising: scan module connects data-carrier store; Boundary recognition module connects data-carrier store and scan module; Directions calculation module, the fillet identification module; Bar space margin processing module connects data-carrier store, boundary recognition module and direction identification module; The search characteristics identification module, the connection strap space margin processing module; The sign character acquisition module, connection strap space margin processing module and search characteristics identification module; The decoding fragment memory, junction symbol character extraction module; RSS bar code combinational logic judge module connects the decoding fragment memory; And decoding module, connect RSS bar code combinational logic judge module.
The RSS bar code decoding chip that the utility model provides obtains the sign character of complete RSS barcode fragment combination by splicing various barcode fragment combination, has improved the recognition rate of RSS bar code and has been decoded into power.
[description of drawings]
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the barcode fragment synoptic diagram of prior art RSS bar code;
Fig. 2 is the standard barcode fragment combination synoptic diagram of prior art RSS bar code;
Fig. 3 is the structural representation of RSS bar code decoding chip of the present utility model;
Fig. 4 is the processing flow chart of RSS bar code combinational logic judge module of the present utility model;
Fig. 5 is the splicing treatment scheme of RSS bar code combinational logic judge module of the present utility model; And
Fig. 6 is the structural representation of RSS bar code combinational logic judge module of the present utility model.
[embodiment]
Relevant feature of the present utility model and technology contents please refer to following detailed description and accompanying drawing, and accompanying drawing only provides reference and explanation, is not to be used for the utility model is limited.
Below at first RSS bar code decoding chip of the present utility model is described in detail, Fig. 3 is a RSS bar code decoding chip synoptic diagram of the present utility model.RSS bar code decoding chip 10 of the present utility model connects data-carrier store 11.Data-carrier store 11 is used to store the bar code image information.Bar code image information comprises image pixel coordinate and image pixel gray-scale value etc.These bar code image information are stored in the data-carrier store 11 with the storage mode of a definite sequence.Further, data-carrier store 11 also comprises address storage space (figure does not show), the address storage space is used for the memory image pixel coordinate, the address that image pixel coordinate corresponding address storage space is interior, and the storage mode of image pixel coordinate in the storage space of address is sequential storage.
The support of RSS bar code adopts the mode of repeatedly taking to discern in actual applications, photographing section bar code only once, a RSS bar code may comprise a plurality of image segments thus, have a plurality of RSS barcode fragment on each image segments, therefore, the RSS bar code image of data-carrier store 11 storages can be a bar code image, also can comprise a plurality of bar code image fragments.RSS bar code decoding chip 10 is by carrying out the sign character that virtual scan can obtain the RSS barcode fragment combination to the bar code image fragment.In the utility model, RSS bar code decoding chip 10 can carry out repeatedly the sign character that virtual scan obtains a plurality of RSS barcode fragment combination to a bar code image fragment.
RSS bar code decoding chip 10 comprises status control module 100, scan module 110, boundary recognition module 120, directions calculation module 130, bar space margin processing module 140, sign character extraction module 150, search characteristics identification module 160, decoding module 170, decoding fragment memory 180 and RSS bar code combinational logic judge module 190.
The empty frontier point of bar that direction identification module 130 obtains according to boundary recognition module calculates and obtains the bar code direction.
Bar space margin processing module 140 is handled bar code image according to the bar code direction, to obtain the empty border of bar in the bar code image.
The search characteristics of search characteristics identification module 160 bases RSS bar code as shown in Figure 2, adopt the mode of empty ratio coupling of bar or template matches that the empty border of bar is discerned, to judge the sign character that whether has the RSS barcode fragment combination in the bar code image, and identify the wherein type of the search characteristics of RSS bar code, and then obtain the type and the symbolic parameter of RSS bar code.
Sign character acquisition module 150 obtains the sign character of RSS barcode fragment combination according to empty border of bar and symbolic parameter corresponding symbol calculation of parameter.
Decoding fragment memory 180 is used to store the sign character of RSS barcode fragment combination, and decoding fragment memory 180 can be stored the sign character of the pairing a plurality of RSS barcode fragment combination of each bar code image fragment of RSS bar code image.
RSS bar code combinational logic judge module 190 is handled according to the sign character of several RSS barcode fragment combination that the rule of combination of the search characteristics of RSS bar code is stored decoding fragment memory 180, obtains the sign character of a complete RSS barcode fragment combination.
The sign character of 170 pairs of complete RSS barcode fragment combination of decoding module is carried out error-checking, if verification failure, then failure result is notified RSS bar code combinational logic judge module 190, RSS bar code combinational logic judge module 190 is handled the sign character of decoding fragment memory 180 several RSS barcode fragment combination of being stored once more according to failure result, with the sign character input decoding module 170 of another complete RSS barcode fragment combination.If verification succeeds, decoding module 170 is converted to bar code information according to the pairing character set of the type of RSS bar code with the sign character of complete RSS barcode fragment combination.
Below the treatment scheme of the RSS bar code combinational logic judge module of RSS bar code decoding chip of the present utility model is described in detail.Fig. 4 is the processing flow chart of RSS bar code combinational logic judge module of the present utility model.As shown in Figure 4, in the treatment scheme of RSS bar code combinational logic judge module of the present utility model, at first obtain the sign character of a RSS barcode fragment combination.The sign character of described RSS barcode fragment combination is formed by at least one RSS barcode fragment, and is preferably formed by a plurality of RSS barcode fragment.
RSS bar code combinational logic judge module 190 judges according to the sign character of the search characteristics of the RSS barcode fragment in the sign character of described RSS barcode fragment combination whether the sign character of described RSS barcode fragment combination is the part of standard barcode fragment combination after obtaining the sign character of a RSS barcode fragment combination.As shown in Figure 2, include only 10 kinds of possible barcode fragment combination in the standard barcode fragment combination.If the RSS bar code is in shooting or scanning process, because the existence of stained or other cause of failures, cause the RSS bar code decoding chip that the sign character generation of the search characteristics of certain the RSS barcode fragment in the sign character of described RSS barcode fragment combination is misread, be about to it and misread into the sign character of other search characteristics.At this moment, can identify this existence of misreading situation by above-mentioned judgement.
If by above-mentioned judgement, RSS bar code combinational logic judge module 190 determines that the sign character of described RSS barcode fragment combination is not the part of standard barcode fragment combination, then abandon the sign character of described RSS barcode fragment combination, and obtain the sign character of another RSS barcode fragment combination again from decoding fragment memory 180.If by above-mentioned judgement, when whether the sign character of determining described RSS barcode fragment combination is the part of described standard barcode fragment combination, the sign character that then continues to judge described RSS barcode fragment combination whether with the sign character repetition of the RSS barcode fragment combination of obtaining before. repeat with the sign character of the RSS barcode fragment combination of obtaining before in the sign character of judging described RSS barcode fragment combination; Whether the sign character of search characteristics of judging each the RSS barcode fragment in the sign character of described RSS barcode fragment combination except needs is consistent with the sign character of search characteristics of each RSS barcode fragment in the sign character of the RSS barcode fragment combination of obtaining before, and whether the sign character that also needs to judge the sign character of the left code of each RSS barcode fragment word and right code word is consistent with the left code word of each RSS barcode fragment and the sign character of right code word in the sign character of the RSS barcode fragment combination of obtaining before. A place is inconsistent thinks that then the sign character of described two RSS barcode fragment combination is unduplicated as long as the sign character of search characteristics, left side sign indicating number speech and right sign indicating number speech exists.
If the sign character of described RSS barcode fragment combination does not repeat with the sign character of the RSS barcode fragment combination of obtaining before, think that then the sign character of described RSS barcode fragment combination is the sign character of the RSS barcode fragment combination of new input, and and then judge whether the sign character of described RSS barcode fragment combination can splice with the sign character of the RSS barcode fragment combination of obtaining before.
If the sign character of described RSS barcode fragment combination can't be spliced with the sign character of the RSS barcode fragment combination of obtaining before, then the sign character with described RSS barcode fragment combination is retained in the buffer memory, and further obtains the sign character of next RSS barcode fragment combination.If the sign character of described RSS barcode fragment combination can be spliced with the sign character of the RSS barcode fragment combination of obtaining before, then splice the sign character of described RSS barcode fragment combination and the sign character of the RSS barcode fragment combination of obtaining before, meet the sign character of the complete RSS barcode fragment combination of described standard barcode fragment combination with formation, and then the sign character of described complete RSS barcode fragment combination is deciphered.
If the sign character of described RSS barcode fragment combination repeats with the sign character of the RSS barcode fragment combination of obtaining before, then the count value to the sign character correspondence of described RSS barcode fragment combination adds up, and judges whether described count value is predetermined value.If described count value reaches predetermined value, think that then the confidence level of sign character of described RSS barcode fragment combination is very high, and the sign character of described RSS barcode fragment combination can be spliced with the sign character of other RSS barcode fragment combination of obtaining before, meet the sign character of the complete RSS barcode fragment combination of described standard barcode fragment combination with formation, and decipher in the sign character input decoding module 170 with complete RSS barcode fragment combination.If count value does not reach or surpassed predetermined value, then obtain the sign character of next RSS barcode fragment combination again.
As shown in Figure 5, the utility model further provides a kind of splicing treatment scheme of RSS bar code combinational logic judge module.In the splicing treatment scheme of RSS bar code combinational logic judge module of the present utility model, RSS bar code combinational logic judge module at first from the sign character of the sign character of described RSS barcode fragment combination and the RSS barcode fragment combination of obtaining before search have the sign character of the RSS barcode fragment combination of search characteristics A1.Subsequently, according to described standard barcode fragment combination, search meets the sign character of the follow-up RSS barcode fragment combination of described standard barcode fragment combination from the sign character of the sign character of described RSS barcode fragment combination and the RSS barcode fragment combination of obtaining before.
In a preferred embodiment, RSS bar code combinational logic judge module is determined the RSS barcode fragment quantity that sign character comprised of complete RSS barcode fragment combination according to the left side sign indicating number speech of the RSS barcode fragment of search characteristics A1 correspondence, and further searches for the sign character of follow-up RSS barcode fragment combination according to the RSS barcode fragment quantity that sign character comprised of complete RSS barcode fragment combination.
In another preferred embodiment, RSS bar code combinational logic judge module splices the sign character of RSS barcode fragment combination according to the count value (degree of confidence) of the sign character of RSS barcode fragment combination.Specifically, for example in splicing, the sign character of at first selecting the highest RSS barcode fragment combination with search characteristics A1 of count value (degree of confidence) is as the basis, select the sign character of the highest follow-up RSS barcode fragment combination of count value (degree of confidence) to splice the row decoding of going forward side by side again.If decoding failure, then continue sign character with the highest RSS barcode fragment combination of count value as the basis with search characteristics A1, splice in the sign character of selecting the relatively low follow-up RSS barcode fragment combination of count value, may until having traveled through all splicings.That is to say that the sign character of the RSS barcode fragment combination that described count value is high more is preferential more splices.
Fig. 6 is the structural representation of RSS bar code combinational logic judge module of the present utility model.As shown in Figure 6, RSS bar code combinational logic judge module 190 of the present utility model connects decoding fragment memory 180 and decoding module 170.RSS bar code combinational logic judge module 190 comprises first judging unit 191, second judging unit 192, the 3rd judging unit 193, the 4th judging unit 194, the 5th judging unit 195, concatenation unit 196, unit 197 and status unit 198 add up.
When not repeating with the sign character of the RSS barcode fragment combination of obtaining before, the sign character that the 3rd judging unit 193 is determined described RSS barcode fragment combination at second judging unit 192 further do not judge whether the sign character of described RSS barcode fragment combination can splice with the sign character of the RSS barcode fragment combination of obtaining before.
When concatenation unit 196 determines that at the 3rd judging unit 193 sign character of described RSS barcode fragment combination can be spliced with the sign character of the RSS barcode fragment combination of obtaining before, sign character to described RSS barcode fragment combination is spliced with the sign character of the RSS barcode fragment combination of obtaining before, meets the sign character of the complete RSS barcode fragment combination of described standard barcode fragment combination with formation.
Add up unit 197 sign character that second judging unit 192 is determined described RSS barcode fragment combination with before the sign character of the RSS barcode fragment combination obtained when repeating, the count value of the sign character correspondence of described RSS barcode fragment combination is added up.
The 4th judging unit 194 judges whether described count value is predetermined value.If described count value reaches predetermined value, the sign character of then controlling 196 pairs of described RSS barcode fragment combination of concatenation unit is spliced with the sign character of other RSS barcode fragment combination of obtaining before, meets the sign character of the complete RSS barcode fragment combination of described standard barcode fragment combination with formation.If count value does not reach or surpassed predetermined value, then obtain the sign character of next RSS barcode fragment combination again from decoding fragment memory 180.
The 5th judging unit 195 splices the sign character of complete RSS barcode fragment combination of conformance with standard barcode fragment combination at concatenation unit 196 after, it is possible to judge whether to have traveled through all splicings, and has spliced next RSS barcode fragment combination may be afterwards obtained in all splicings again from decoding fragment memory 180 sign character at concatenation unit 196.
The sign character of 170 pairs of complete RSS barcode fragment combination of decoding module is carried out error-checking, if the status unit 198 in the RSS bar code combinational logic judge module 190 is then notified failure result in the verification failure.Status unit 198 is handled once more according to the sign character of several RSS barcode fragment combination that failure result is controlled first judging unit 191, second judging unit 192, the 3rd judging unit 193, the 4th judging unit 194, the 5th judging unit 195, concatenation unit 196,197 pairs of the unit decoding fragment memory 180 that adds up is stored, with the sign character input decoding module 170 of the complete RSS barcode fragment combination of another kind of coincidence decoding standard.If verification succeeds, decoding module 170 is converted to bar code information according to the pairing character set of the type of RSS bar code with the sign character of complete RSS barcode fragment combination.
The utility model provides a kind of RSS bar code decoding chip, and described RSS bar code decoding chip obtains the sign character of complete RSS barcode fragment combination by splicing various barcode fragment combination, has improved the recognition rate of RSS bar code and has been decoded into power.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application under the situation that does not break away from spirit and scope of the present utility model.
Claims (1)
1. a RSS bar code decoding chip is characterized in that, comprising:
Be used to connect the scan module of data-carrier store;
Boundary recognition module connects described data-carrier store and described scan module;
Directions calculation module connects described boundary recognition module;
Bar space margin processing module connects described boundary recognition module and described directions calculation module;
The search characteristics identification module connects described bar space margin processing module;
The sign character extraction module connects described bar space margin processing module and described search characteristics identification module;
The decoding fragment memory connects described sign character acquisition module;
RSS bar code combinational logic judge module connects described decoding fragment memory; And
Decoding module connects described RSS bar code combinational logic judge module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126800U CN201927032U (en) | 2010-06-01 | 2010-06-01 | RSS (reduced space symbology) barcode decoding chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126800U CN201927032U (en) | 2010-06-01 | 2010-06-01 | RSS (reduced space symbology) barcode decoding chip |
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| CN201927032U true CN201927032U (en) | 2011-08-10 |
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| CN2010202126800U Expired - Fee Related CN201927032U (en) | 2010-06-01 | 2010-06-01 | RSS (reduced space symbology) barcode decoding chip |
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- 2010-06-01 CN CN2010202126800U patent/CN201927032U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20170601 |