CN104424459A - Rapid identification method of one-dimensional laser bar code and apparatus thereof - Google Patents
Rapid identification method of one-dimensional laser bar code and apparatus thereof Download PDFInfo
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Abstract
The invention provides a rapid identification method of a one-dimensional laser bar code. The method comprises the following steps that: whether an SOS edge signal arrives or not is determined; id so, DATA bar code data are started to be received and the next step is executed; otherwise, determination is carried out continuously; initial end clear area data and bar code character data are obtained and are stored in a buffer area; terminal clear area data are started to be obtained and are stored into the buffer area and whether setting time arrives is determined; if so, whether a next edge signal arrives is determined; if not, the next step is executed; if the next edge signal arrives, the next step is executed; otherwise, waiting is carried out until the next edge signal arrives and then the next step is executed; identifying and reading are started; the data at the buffer area are transferred and stored into forward and reverse buffer areas and the next step is executed, and next bar code data are received and returning is carried out; decoding is carried out; and a bar code is outputted. In addition, the invention also relates to an apparatus for realizing the method. With the method and the apparatus, the time is saved; and the identifying and reading speed is accelerated.
Description
Technical field
The present invention relates to bar code field, particularly a kind of method for quickly identifying of one dimension laser bar code and device.
Background technology
At present on the market to DATA(serial barcode data) reception of barcode signal is all by the SOS(serial barcode data scan period) edge signal as and end period, namely when SOS edge signal arrives, start to receive DATA barcode data, when next SOS edge signal arrives, terminate the reception of DATA barcode data, and then start recognition, like this when DATA barcode signal holding time is short, next SOS edge signal just finishes the reception to DATA barcode data when also not arriving, and to wait for that the arrival of SOS edge signal just starts recognition, terminate to receive in the time period between the arrival of next SOS edge signal from DATA barcode data like this and do not do anything, this time period is caused not utilized fully, cause waste of time, and recognition speed is slower.
Summary of the invention
The technical problem to be solved in the present invention is, loses time for prior art above-mentioned, distinguish slow defect, provides a kind of and save time, distinguish method for quickly identifying and the device of the one dimension laser bar code of speed.
The technical solution adopted for the present invention to solve the technical problems is: the method for quickly identifying constructing a kind of one dimension laser bar code, comprises the steps:
A) judge whether the edge signal of SOS periodic signal arrives, in this way, start receive DATA barcode data and perform step B); Otherwise, proceed the judgement of this step; Described DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between described clear area; Described DATA bar code character data comprise the bar and sky that are alternately arranged successively, and a described bar or sky are a unit;
B) obtain clear area, top data and deposit in the buffer;
C) obtain the bar code character data after the data of clear area, described top and deposit in the buffer;
D) start obtain terminal clear area data and deposit in the buffer, and judge whether setting-up time arrives, in this way, perform step F); Otherwise, perform step e); Described setting-up time is at least greater than the setting multiple of the time width of described unit;
E) judge whether next edge signal of described SOS periodic signal arrives, in this way, perform step F); Otherwise, wait for until next edge signal of described SOS periodic signal arrives and performs step F);
F) recognition is started to the data in described buffer zone;
G) by the data conversion storage in described buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in described buffer zone to reverse buffer zone and perform step H), start to enter to the reception of next DATA barcode data simultaneously and return step B);
H) to the decoding data in the data in described forward buffer zone or reverse buffer zone;
I) bar code of type corresponding to the data in described forward buffer zone or the data in described reverse buffer zone is exported.
In the method for quickly identifying of one dimension laser bar code of the present invention, described setting-up time is greater than 3 times of the time width of last unit in described DATA barcode data.
In the method for quickly identifying of one dimension laser bar code of the present invention, described step H) comprise further:
H1) judge whether the data in described forward buffer zone meet the feature of Article 1 code type, in this way, perform step H2); Otherwise, perform step H3);
H2) judge whether to distinguish described Article 1 code type, in this way, perform step I); Otherwise, perform step H3);
H3) judge whether the data in described reverse buffer zone meet the feature of Article 1 code type, in this way, perform step H4); Otherwise, perform step H5);
H4) judge whether to distinguish described Article 1 code type, in this way, perform step I); Otherwise, perform step H5);
H5) according to described step H1), H2), H3) and mode H4) judge whether the feature meeting other barcode types again, in this way, perform step I); Otherwise, obtain next DATA barcode data and return step F).
In the method for quickly identifying of one dimension laser bar code of the present invention, described in be characterized as the width feature of the code element of described DATA barcode data, described DATA barcode data is digital quantity or analog quantity.
In the method for quickly identifying of one dimension laser bar code of the present invention, described step I) in bar code directly exported by USB.
The invention still further relates to a kind of device realizing the method for quickly identifying of above-mentioned one dimension laser bar code, comprising:
Edge signal judging unit: for judging whether the edge signal of SOS periodic signal arrives, in this way, start to receive DATA barcode data; Otherwise, proceed to judge; Described DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between described clear area; Described DATA bar code character data comprise the bar and sky that are alternately arranged successively, and a described bar or sky are a unit;
Top data acquisition unit: for obtaining clear area, top data and depositing in the buffer;
Character data acquisition unit: deposit in the buffer for the bar code character data that obtain after the data of clear area, described top;
Terminal data acquisition unit: obtain terminal clear area data for starting and deposit in the buffer, and judge whether setting-up time arrives; Described setting-up time is at least greater than the setting multiple of the time width of described unit;
Edge signal judging unit: for judging whether next edge signal of described SOS periodic signal arrives, and wait for until next edge signal of described SOS periodic signal arrives when not arriving;
Recognition unit: for starting recognition to the data in described buffer zone;
Data conversion storage unit: for by the data conversion storage in described buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in described buffer zone in reverse buffer zone, start to enter the reception to next DATA barcode data simultaneously;
Decoding unit: for the data in described forward buffer zone or the decoding data oppositely in buffer zone;
Bar code output unit: for exporting the bar code of type corresponding to the data in described forward buffer zone or the data in described reverse buffer zone.
Realize in the device of the method for quickly identifying of above-mentioned one dimension laser bar code of the present invention, described setting-up time is greater than 3 times of the time width of last unit in described DATA barcode data.
Realize in the device of the method for quickly identifying of above-mentioned one dimension laser bar code of the present invention, described decoding unit comprises further:
Forward buffered data judge module: for judging whether the data in described forward buffer zone meet the feature of Article 1 code type;
Recognition module: described Article 1 code type is distinguished for judging whether;
Reverse buffered data judge module: for judging whether the data in described reverse buffer zone meet the feature of Article 1 code type;
Recognition judge module: for judging whether, described Article 1 code type being distinguished, if not, then continuing the feature judging whether to meet other barcode types;
Other types bar code judge module: for judging whether according to the mode in described forward buffered data judge module, recognition module, oppositely buffered data judge module and recognition judge module the feature meeting other barcode types again; As do not met, obtaining next DATA barcode data and returning.
Realize in the device of the method for quickly identifying of above-mentioned one dimension laser bar code of the present invention, described in be characterized as the width feature of the code element of described DATA barcode data, described DATA barcode data is digital quantity or analog quantity.
Realize in the device of the method for quickly identifying of above-mentioned one dimension laser bar code of the present invention, the bar code in described bar code output unit is directly exported by USB.
Implement method for quickly identifying and the device of one dimension laser bar code of the present invention, there is following beneficial effect: owing to judging whether setting-up time arrives when starting to obtain terminal clear area data, when setting-up time arrives, just start recognition; When setting-up time does not arrive, then judge whether next edge signal of SOS periodic signal arrives, if arrived, then start recognition; So just fully utilizing receiving DATA barcode data to the time between next SOS edge signal arrives, starting recognition in advance, so it is saved time, distinguishes speed.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of method in the method for quickly identifying of one dimension laser bar code of the present invention and device embodiment;
Fig. 2 is DATA bar code waveform schematic diagram in described embodiment;
Fig. 3 is the particular flow sheet of decoding in described embodiment;
Fig. 4 is the structural representation of device in described embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the method for quickly identifying and device embodiment of one dimension laser bar code of the present invention, the process flow diagram of its method as shown in Figure 1.In Fig. 1, the method comprises the steps:
Step S01 judges whether the edge signal of SOS periodic signal arrives: in this step, judges whether the edge signal of SOS periodic signal arrives, if arrived, then performs step S02; Otherwise, proceed the judgement of this step.It is worth mentioning that, the edge signal of SOS periodic signal here can be rising edge signal, also can be negative edge signal.
Step S02 starts to receive DATA barcode data: if the judged result of above-mentioned steps S01 is yes, then perform this step.In the present embodiment, DATA barcode data is the data of bar code decoding, and DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between clear area; Need transmission process after the recognition of DATA bar code character data scanning, when the clear area of the left and right sides is only distinguished for bar code scan, do not need to participate in message code transmission.DATA bar code character data comprise the bar (secret note) and empty (blank) that are alternately arranged successively, and bar code information is transmitted by bar and empty different in width and position, comprises the customizing messages expressed by bar code.An above-mentioned bar or sky are a unit; The clear area of both sides is called clear area, top and the terminal clear area of DATA bar code character respectively.In this step, be ready to start to receive DATA barcode data.
Step S03 obtains clear area, top data and deposits in the buffer: in this step, when SOS cycle edge signal arrives, starts to obtain clear area, top data, and is deposited in the buffer.It is worth mentioning that, in the present embodiment, high level is arranged in clear area and sky, secret note is arranged to low level, refer to the DATA bar code waveform in Fig. 2.Certainly, in other embodiments, also low level can be arranged in clear area and sky, secret note is arranged to high level.
Step S04 obtains the bar code character data after the data of clear area, top and deposits in the buffer: in this step, start to obtain the bar code character data after the data of clear area, top when the high level generation saltus step of clear area, top, and by this bar code character deposit data in the buffer.
Step S05 starts to obtain terminal clear area data and deposits in the buffer, and judge whether setting-up time arrives: in this step, when the low level generation saltus step of last secret note of bar code character data, start to obtain terminal clear area data, and by terminal clear area deposit data in the buffer, from the moment of the low level generation saltus step of last secret note, judge whether setting-up time arrives simultaneously, in this way, perform step S08; Otherwise, perform step S06.In the present embodiment, setting-up time is at least greater than the setting multiple of the time width of unit (secret note or blank), and setting multiple can set according to actual conditions.Particularly, in the present embodiment, setting-up time is greater than 3 times of the width of last unit in DATA barcode data, refers in Fig. 2 in Hn, Fig. 2, and setting-up time is Hn > 3Ln.Certainly, as the case may be, the size of Hn can also be adjusted, such as: can be Hn > 2Ln.So just fully utilizing receiving DATA barcode data to the time between next SOS edge signal arrives, starting recognition in advance, so it is saved time, distinguishes speed.
Step S06 judges whether next edge signal of SOS periodic signal arrives: if the judged result of above-mentioned steps S05 is no, then perform this step.In this step, judge whether next edge signal of SOS periodic signal arrives, also namely judge whether the next one adjacent with a upper edge signal of SOS periodic signal arrives along signal, in this way, perform step S08; Otherwise, perform step S07.
Step S07 waits for until next edge signal of SOS periodic signal arrives: if the judged result of above-mentioned steps S06 is no, then perform this step.In this step, wait for, next edge signal to SOS periodic signal arrives always.Execute this step, perform step S08.
Step S08 starts recognition to the data in buffer zone: in this step, and computer equipment prepares to start to start recognition to the data in buffer zone.Execute this step, perform step S09, start to enter to the reception of next DATA barcode data simultaneously and return step S02.
Step S09 by the data conversion storage in buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in buffer zone in reverse buffer zone: in this step, by the data conversion storage deposited in buffer zone in forward buffer zone, also dump in forward buffer zone by the data deposited in buffer zone by the order that forward reads, the data in buffer zone are dumped in reverse buffer zone by the order of reverse read simultaneously.Data in reverse buffer zone are reverse data of the data in forward buffer zone.
Step S10 is to the decoding data in the data in forward buffer zone or reverse buffer zone: in this step, to the decoding data in the data in forward buffer zone or reverse buffer zone, about how to decode particularly, can have a detailed description after a while.
Step S11 exports the bar code of type corresponding to the data in forward buffer zone or the data in reverse buffer zone: in this step, export the bar code of type corresponding to the data in forward buffer zone or the data in reverse buffer zone, this is the bar code exported is bar code, namely decoded character data.Such as: bar code can be EAN13, EAN8, UPC-A, UPC-E, CODABAR (NW-7), CODE39, CODE93, INTERLEAVED_2OF5, STANDARD_2OF5, MATRIX_2OF5, CODE128, EAN128 (GS1-128), CODE11, CHINESE_POST etc.It is worth mentioning that, in the present embodiment, the recognition method of bar code is laser identification, and certainly, in other embodiments, the recognition method of bar code also can be that CCD identifies or CMOS camera identification.USB of the prior art is not direct output, but adopts serial ports TTL to turn USB, or PS2 turns USB, which increases peripheral interface conversion chip circuit, thus increases manufacturing cost, strengthens after sale service difficulty, reduces output bars code data speed.It is worth mentioning that, in the present embodiment, bar code is directly exported by USB, so just do not need serial ports TTL turned USB or export bar code again after PS2 is turned USB, so decrease peripheral circuit, reduce manufacturing cost, improve output bars code character data speed simultaneously.
For the present embodiment, above-mentioned steps S10 also can refinement further, and the particular flow sheet after its refinement as shown in Figure 3.In Fig. 3, step S10 comprises further:
Step S101 judges whether the data in forward buffer zone meet the feature of Article 1 code type: in this step, judge whether the data in forward buffer zone meet the feature of Article 1 code type, in the present embodiment, the above-mentioned width feature (time width feature) being characterized as the code element of DATA barcode data, if the judged result of this step is yes, then perform step S102; Otherwise, perform step S103.
Step S102 judges whether to distinguish Article 1 code type: if the judged result of above-mentioned steps S101 is yes, then perform this step.In this step, judge whether to distinguish Article 1 code type, in this way, perform step S11; Otherwise, perform step S103.
Step S103 judges whether the data in reverse buffer zone meet the feature of Article 1 code type: if the judged result of above-mentioned steps S102 is no, then perform this step.In this step, judge whether the data in reverse buffer zone meet the feature of Article 1 code type, in this way, then perform step S104; Otherwise, perform step S105.
Step S104 judges whether to distinguish Article 1 code type: if the judged result of above-mentioned steps S103 is yes, then perform this step.In this step, judge whether to distinguish Article 1 code type, in this way, perform step S11; Otherwise, perform step S105.
Step S105 judges whether according to the mode of described step S101, S102, S103 and S104 the feature meeting other barcode types again: if the judged result of above-mentioned steps S104 is no, then perform this step.In this step, judge whether according to the mode of described step S101, S102, S103 and S104 the feature meeting other barcode types again, if the result judged is yes, then perform step S11; Otherwise, perform step S106.In other words, when decoding in the present embodiment, each barcode types is judged successively, until the barcode types that the data in the data found out in forward buffer zone or forward buffer zone meet.
Step S106 obtains next DATA barcode data: in this step, obtains next DATA barcode data, and returns step S08.
In prior art, DATA barcode data is digital quantity, causes bar code scan signal message amount reduce and restrict reading code performance.It is worth mentioning that, in the present embodiment, DATA barcode data is digital quantity or analog quantity, compared with prior art, invention increases bar code scan signal message amount.
The present embodiment also relates to a kind of device realizing the method for quickly identifying of above-mentioned one dimension laser bar code, and its structural representation as shown in Figure 4.In Fig. 4, this device comprises edge signal judging unit 1, top data acquisition unit 2, character data acquisition unit 3, terminal data acquisition unit 4, edge signal judging unit 5, data conversion storage unit 6, decoding unit 7 and bar code output unit 8; Wherein, edge signal judging unit 1, for judging whether the edge signal of SOS periodic signal arrives, in this way, starts to receive DATA barcode data; Otherwise, proceed to judge; DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between clear area; DATA bar code character data comprise the bar and sky that are alternately arranged successively, and a bar or sky are a unit; Top data acquisition unit 2 is for obtaining clear area, top data and depositing in the buffer; Character data acquisition unit 3 is for the bar code character data that obtain after the data of clear area, top and deposit in the buffer; Terminal data acquisition unit 4 obtains terminal clear area data for starting and deposits in the buffer, and judges whether setting-up time arrives; Setting-up time is at least greater than the setting multiple of the time width of unit; Edge signal judging unit 5 for judging whether next edge signal of SOS periodic signal arrives, and is waited for until next edge signal of SOS periodic signal arrives when not arriving; Recognition unit 6 is for starting recognition to the data in buffer zone; Data conversion storage unit 7 for by the data conversion storage in buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in buffer zone in reverse buffer zone, start to enter the reception to next DATA barcode data simultaneously; Decoding unit 8 is for the data in forward buffer zone or the decoding data oppositely in buffer zone; Bar code output unit 9 is for exporting the bar code of type corresponding to the data in forward buffer zone or the data in reverse buffer zone.Above-mentioned setting-up time is greater than 3 times of the time width of last unit in DATA barcode data.Receive the DATA barcode data end time owing to seizing, distinguish in advance, so shorten the recognition time, improve recognition speed.Meanwhile, in the present embodiment, the bar code in bar code output unit 9 is directly exported by USB, so decrease peripheral circuit, reduces manufacturing cost, improves output bars code character data speed simultaneously.DATA barcode data is digital quantity or analog quantity, so which increase bar code scan signal message amount.
In the present embodiment, decoding unit 8 comprises forward buffered data judge module 81, recognition module 82, recognition judge module 83 and other types bar code judge module 84 further; Wherein, forward buffered data judge module 81 is for judging whether the data in forward buffer zone meet the feature of Article 1 code type; This is characterized as the width feature (time width feature) of the code element of DATA barcode data, and recognition module 82 is distinguished Article 1 code type for judging whether; Reverse buffered data judge module 83 is for judging whether the data in reverse buffer zone meet the feature of Article 1 code type; Recognition judge module 84 is distinguished Article 1 code type for judging whether, if not, then continues the feature judging whether to meet other barcode types; Other types bar code judge module 85 is for judging whether according to the mode in forward buffered data judge module 81, recognition module 82, oppositely buffered data judge module 83 and recognition judge module 83 feature meeting other barcode types again; As do not met, obtaining next DATA barcode data and returning.
In a word, in the present embodiment, owing to seizing the end time receiving DATA barcode signal, distinguish in advance, shorten the recognition time, so entirety improves recognition speed; Meanwhile, due to the DATA barcode signal gathered, the digitizing barcode signal after integer process (binaryzation) can be supported simultaneously, support the simulation barcode signal that integer process (binaryzation) is front, so which increase bar code scan signal message amount; In addition, because bar code is directly exported by USB, so which raises output bars code character data speed.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for quickly identifying for one dimension laser bar code, is characterized in that, comprises the steps:
A) judge whether the edge signal of SOS periodic signal arrives, in this way, start receive DATA barcode data and perform step B); Otherwise, proceed the judgement of this step; Described DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between described clear area; Described DATA bar code character data comprise the bar and sky that are alternately arranged successively, and a described bar or sky are a unit;
B) obtain clear area, top data and deposit in the buffer;
C) obtain the bar code character data after the data of clear area, described top and deposit in the buffer;
D) start obtain terminal clear area data and deposit in the buffer, and judge whether setting-up time arrives, in this way, perform step F); Otherwise, perform step e); Described setting-up time is at least greater than the setting multiple of the time width of described unit;
E) judge whether next edge signal of described SOS periodic signal arrives, in this way, perform step F); Otherwise, wait for until next edge signal of described SOS periodic signal arrives and performs step F);
F) recognition is started to the data in described buffer zone;
G) by the data conversion storage in described buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in described buffer zone to reverse buffer zone and perform step H), start to enter to the reception of next DATA barcode data simultaneously and return step B);
H) to the decoding data in the data in described forward buffer zone or reverse buffer zone;
I) bar code of type corresponding to the data in described forward buffer zone or the data in described reverse buffer zone is exported.
2. the method for quickly identifying of one dimension laser bar code according to claim 1, is characterized in that, described setting-up time is greater than 3 times of the time width of last unit in described DATA barcode data.
3. the method for quickly identifying of one dimension laser bar code according to claim 1 and 2, is characterized in that, described step H) comprise further:
H1) judge whether the data in described forward buffer zone meet the feature of Article 1 code type, in this way, perform step H2); Otherwise, perform step H3);
H2) judge whether to distinguish described Article 1 code type, in this way, perform step I); Otherwise, perform step H3);
H3) judge whether the data in described reverse buffer zone meet the feature of Article 1 code type, in this way, perform step H4); Otherwise, perform step H5);
H4) judge whether to distinguish described Article 1 code type, in this way, perform step I); Otherwise, perform step H5);
H5) according to described step H1), H2), H3) and mode H4) judge whether the feature meeting other barcode types again, in this way, perform step I); Otherwise, obtain next DATA barcode data and return step F).
4. the method for quickly identifying of one dimension laser bar code according to claim 3, is characterized in that, described in be characterized as the width feature of the code element of described DATA barcode data, described DATA barcode data is digital quantity or analog quantity.
5. the method for quickly identifying of one dimension laser bar code according to claim 4, is characterized in that, described step I) in bar code directly exported by USB.
6. realize a device for the method for quickly identifying of one dimension laser bar code as claimed in claim 1, it is characterized in that, comprising:
Edge signal judging unit: for judging whether the edge signal of SOS periodic signal arrives, in this way, start to receive DATA barcode data; Otherwise, proceed to judge; Described DATA barcode data comprises the clear area data of both sides and the DATA bar code character data between described clear area; Described DATA bar code character data comprise the bar and sky that are alternately arranged successively, and a described bar or sky are a unit;
Top data acquisition unit: for obtaining clear area, top data and depositing in the buffer;
Character data acquisition unit: deposit in the buffer for the bar code character data that obtain after the data of clear area, described top;
Terminal data acquisition unit: obtain terminal clear area data for starting and deposit in the buffer, and judge whether setting-up time arrives; Described setting-up time is at least greater than the setting multiple of the time width of described unit;
Edge signal judging unit: for judging whether next edge signal of described SOS periodic signal arrives, and wait for until next edge signal of described SOS periodic signal arrives when not arriving;
Recognition unit: for starting recognition to the data in described buffer zone;
Data conversion storage unit: for by the data conversion storage in described buffer zone in forward buffer zone, and by the reverse data conversion storage of the data in described buffer zone in reverse buffer zone, start to enter the reception to next DATA barcode data simultaneously;
Decoding unit: for the data in described forward buffer zone or the decoding data oppositely in buffer zone;
Bar code output unit: for exporting the bar code of type corresponding to the data in described forward buffer zone or the data in described reverse buffer zone.
7. the device realizing the method for quickly identifying of described one dimension laser bar code according to claim 6, is characterized in that, described setting-up time is greater than 3 times of the time width of last unit in described DATA barcode data.
8. the device realizing the method for quickly identifying of described one dimension laser bar code according to claim 6 or 7, it is characterized in that, described decoding unit comprises further:
Forward buffered data judge module: for judging whether the data in described forward buffer zone meet the feature of Article 1 code type;
Recognition module: described Article 1 code type is distinguished for judging whether;
Reverse buffered data judge module: for judging whether the data in described reverse buffer zone meet the feature of Article 1 code type;
Recognition judge module: for judging whether, described Article 1 code type being distinguished, if not, then continuing the feature judging whether to meet other barcode types;
Other types bar code judge module: for judging whether according to the mode in described forward buffered data judge module, recognition module, oppositely buffered data judge module and recognition judge module the feature meeting other barcode types again; As do not met, obtaining next DATA barcode data and returning.
9. the device realizing the method for quickly identifying of described one dimension laser bar code according to claim 8, is characterized in that, described in be characterized as the width feature of the code element of described DATA barcode data, described DATA barcode data is digital quantity or analog quantity.
10. the device realizing the method for quickly identifying of described one dimension laser bar code according to claim 9, is characterized in that, the bar code in described bar code output unit is directly exported by USB.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111797646A (en) * | 2020-07-08 | 2020-10-20 | 北京京东振世信息技术有限公司 | Bar code identification method and terminal |
| CN111797646B (en) * | 2020-07-08 | 2021-06-29 | 北京京东振世信息技术有限公司 | Bar code identification method and terminal |
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