CN1517937A - Double-layer code reader - Google Patents
Double-layer code reader Download PDFInfo
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- CN1517937A CN1517937A CNA03102811XA CN03102811A CN1517937A CN 1517937 A CN1517937 A CN 1517937A CN A03102811X A CNA03102811X A CN A03102811XA CN 03102811 A CN03102811 A CN 03102811A CN 1517937 A CN1517937 A CN 1517937A
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- comparer
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- code translator
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Abstract
A dual-layer code reader for the dual-layer bar code consisting of external-layer code, film and internal-layer code is composed of casing, ordinary red-light reading head, infrared reading head, embedded device consisting of two decoders, three comparators and memory, and display controller. Said external-layer code is read by ordinary red-light reading head and said internal-layer code is read by infrared reading head. Its advantage is high antiforge performance.
Description
Technical field: the present invention relates to the bar code reading technology, be specially adapted to secondary recognition.
Prior art: at present, recognizer generally is made up of housing, common ruddiness recognition head, embedded device, display control unit, and embedded device comprises CPU, RAM, ROM and input/output port composition.After by recognition head bar code being read information, the code translator of input embedding equipment is decoded, and is then shown by display control unit.The recognition process of Here it is general individual layer sign indicating number, because individual layer sign indicating number naked eyes are as seen, easily by imitated, a kind of double-deck sign indicating number has been invented by our company, and promptly outer code, overlay film, inner code three are overlapping, and inner code is covered invisible by overlay film, and this just needs special-purpose recognizer.
Summary of the invention: the objective of the invention is to overcome above-mentioned defective, a kind of double-deck code reader that double-deck sign indicating number is carried out secondary recognition is provided.
The solution of the present invention is: other has an infrared light recognition head to be connected with embedded device, and embedded device also comprises:
Be used for first comparer that the first code translator operation result is judged, this comparer carries out computing to the operation result of first code translator according to first funtcional relationship of setting and then judges selection: if failure then disconnect infrared light recognition head, if success then connect infrared light recognition head deposits operation result in reservoir simultaneously;
Be used for reservoir that the first comparer operation result is stored;
The information that is used for that infrared light is read is carried out second code translator of computing;
Be used for second comparer that the operation result of second code translator is judged, this comparer will be judged selection to the operation result of second code translator: if the failure would disconnect the 3rd comparer, if the success would open the 3rd comparer, simultaneously operation result is imported the 3rd comparer;
Be used for the operation result of reservoir and the operation result of second code translator being carried out computing the 3rd comparer relatively by second funtcional relationship of setting, this comparer is judged selection to the result that the operation result of the reservoir and second code translator carries out the computing comparison by the funtcional relationship of setting: if failure then disconnect display control unit, if success then connect display control unit.
The invention has the advantages that: the application of double-deck sign indicating number has reduced the possibility of copying, and the imitator can't with the naked eye read inner code, thereby can't copy.And double-deck code reader is its specialized equipment, but also is provided with ectonexine sign indicating number information, must have improved confidentiality by setting the internal unit that function carries out computing.
Description of drawings: accompanying drawing 1 is structure block diagram of the present invention.
Accompanying drawing 2 is the embedded device block scheme.
Embodiment: the present invention is made up of housing, common ruddiness recognition head, infrared light recognition head, embedded device, display control unit.First code translator, first comparer, reservoir, second code translator, second comparer, the 3rd comparer are arranged in the embedded device.
Its course of work is: common ruddiness recognition head is distinguished outer code earlier, the information of recognition enters the first code translator computing, then import first comparer into, carry out computing according to first funtcional relationship of setting, and operation result judged selection, if failure then disconnect infrared light recognition head is if success then connect infrared light recognition head deposits information in reservoir simultaneously; After overlay film that infrared light penetrates double-deck sign indicating number reads the information of inner code and returns embedded device, second code translator will carry out computing to its information, and import operation result into second comparer; Second comparer will be judged comparison to the information of importing into, if the failure would disconnect the 3rd comparer, if the success would open the 3rd comparer, the operation result with second comparer imports the 3rd comparer into simultaneously; After opening, the 3rd comparer will carry out computing relatively by second funtcional relationship of setting by second comparer inner code information of importing into and the outer code information of extracting reservoir, if the failure would disconnect display control unit, if success then connect display control unit, and with computing comparative result input display control unit.
The predefined funtcional relationship of first and third comparer internal memory can be a linear function, or function repeatedly, or arbitrary function.Its role is to ectonexine sign indicating number information is decided approximately with a kind of funtcional relationship, the imitated person of desire can't be copied.
Claims (1)
1, double-deck code reader, comprise housing, common ruddiness recognition head, embedded device, display control unit, embedded device comprises CPU, RAM, ROM, input/output port, first code translator, it is characterized in that having in addition an infrared light recognition head to be connected with embedded device, embedded device also comprises:
Be used for first comparer that the first code translator operation result is judged, this comparer carries out computing to the operation result of first code translator according to first funtcional relationship of setting and then judges selection: if failure then disconnect infrared light recognition head, if success then connect infrared light recognition head deposits operation result in reservoir simultaneously;
Be used for reservoir that the first comparer operation result is stored;
The information that is used for that infrared light is read is carried out second code translator of computing;
Be used for second comparer that the operation result of second code translator is judged, this comparer will be judged selection to the operation result of second code translator: if the failure would disconnect the 3rd comparer, if the success would open the 3rd comparer, simultaneously operation result is imported the 3rd comparer;
Be used for the operation result of reservoir and the operation result of second code translator being carried out computing the 3rd comparer relatively by second funtcional relationship of setting, this comparer is judged selection to the result that the operation result of the reservoir and second code translator carries out the computing comparison by the funtcional relationship of setting: if failure then disconnect display control unit, if success then connect display control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03102811XA CN1517937A (en) | 2003-01-17 | 2003-01-17 | Double-layer code reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03102811XA CN1517937A (en) | 2003-01-17 | 2003-01-17 | Double-layer code reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1517937A true CN1517937A (en) | 2004-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA03102811XA Pending CN1517937A (en) | 2003-01-17 | 2003-01-17 | Double-layer code reader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1517937A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106228103A (en) * | 2016-07-20 | 2016-12-14 | 华南理工大学 | A kind of recognition methods of double-deck code |
| CN106289231A (en) * | 2016-07-20 | 2017-01-04 | 华南理工大学 | The alignment system of AGV dolly and localization method thereof |
| CN107169547A (en) * | 2017-04-13 | 2017-09-15 | 华南理工大学 | A kind of double-deck double exposure photoresponse Quick Response Code and preparation method thereof |
-
2003
- 2003-01-17 CN CNA03102811XA patent/CN1517937A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106228103A (en) * | 2016-07-20 | 2016-12-14 | 华南理工大学 | A kind of recognition methods of double-deck code |
| CN106289231A (en) * | 2016-07-20 | 2017-01-04 | 华南理工大学 | The alignment system of AGV dolly and localization method thereof |
| CN106228103B (en) * | 2016-07-20 | 2019-05-10 | 华南理工大学 | A kind of recognition methods of bilayer code |
| CN106289231B (en) * | 2016-07-20 | 2019-09-24 | 华南理工大学 | The positioning system and its localization method of AGV trolley |
| CN107169547A (en) * | 2017-04-13 | 2017-09-15 | 华南理工大学 | A kind of double-deck double exposure photoresponse Quick Response Code and preparation method thereof |
| CN107169547B (en) * | 2017-04-13 | 2021-09-21 | 华南理工大学 | Double-layer overprinted photoresponse two-dimensional code and preparation method thereof |
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhongan Electronic Technology Co., Ltd., Fujian Prov. Document name: Resume right request approval decision |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |