Technology
① PDF417 codes: PDF417 is an open bar code systems. PDF417 portability of PDF for the data files (Portable Data File) abbreviation, whichever is similar to a bar code data file can store more information, a PDF for each code a storage capacity of up to 1,108 alphanumeric (Bytes), Ruo Jiang can be stored digitally compressed to 2,729 Bytes. Each PDF417 bar codes are stacked by the 3-90, but in order to facilitate scanning, the four weeks Jieyou quiet empty area, the water calm, quiet space is divided into an empty area and vertical static empty area, should be at least 0.020 inch.
② CM Code: Compact Matrix code, code map using perforated positioning technology and image segmentation. Perforation through the analysis of information and sub-location information to be completed by two-dimensional bar code image recognition and processing.
③ GM yards: grid matrix code, code figure from the square macro modules, each macro block from 6 x 6 square unit modules can store a certain amount of data.
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① Normal production of bar code card is used to print or printing PVC card-based bar code printed on the surface often referred to as plain language, it is easy to copy after the theft.
② the surface of the bar code printed or ink-jet production, the surface production of easy to break, affecting credit card when you read and easy to wear.
③ Tak-shing, the adoption of international standards for printing bar-code technology standards for encoding software generates barcodes, printing clearly, and never wear.
④ Tak-shing bar code card anti-counterfeiting technology can effectively solve the barcode card will not be copied or not to be worn system card problem.
⑤, compared with the traditional magnetic card, barcode card security Tak-shing, will not fall outside interference caused by magnetic or loss of information.
⑥ can produce a variety of bar code cards, widely used in: securities trading cards, IDs, ID card, code card, medical card.
Tak-shing ordinary one-dimensional bar code card:
Arranged by a set of rules section, and air, as well as the corresponding characters of the tag, "Article" refers to the lower part of the reflectivity of light, "empty" refers to a high light reflectivity of the part, these articles and empty data on the composition of Expression of certain information, and can be read with the universal bar code equipment, converted into computer-compatible binary and decimal information.
① UPC Code: The code system is mainly used for business systems, the code length is fixed at 12.
② EAN Code: The code system is mainly used for goods coding, there are two types: EAN-13 codes and EAN-8 Ma.
③ cross 25 yards: The code system used is a random variable length of continuous self-checking digital code system.
④ 39 Ma (Code 3 of 9): The code system used is the length of the random variable discrete self-checking letter of the word-type code system.
⑤ Codabar (codabar): The code system is mainly used for logistics, is a variable-length discrete self-checking digital code system.
⑥ 128 Ma (Code128):) is a continuous variable length alphanumeric code system.
IC Card Intelligent is a kind of shape, like a credit card, the card package, integrated circuit chip card also known as: IC card, smart card, it will have storage, encryption and data-processing capabilities in an integrated circuit chip module packaging and credit card-sized in plastic card-based, they constitute the IC card. IC card with a magnetic, anti-damage properties of cryptographic operations, durable and strong, good security, storage, data high security, data storage capacity, application equipment and systems network environment, low cost, IC card and complete variety of models, technical specifications mature People are universal attention, have been replaced by an increasing number of field applications and other data on magnetic cards. Are widely used: financial, taxation, public security, transportation, post and telecommunications, communications, services, health care, insurance, commerce and many other fields
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A. non-encrypted memory IC card: card chip electrically erasable programmable read-only memory EEPROM, as well as the address decoding circuitry and instruction decoding circuitry. Memory card is a passive-type cards, usually synchronous communication. Card storage convenience, in many occasions can replace the card. But these IC card is not equipped with security functions, which are generally used for storage do not need to confidential information.
B. Security Logic IC card: On the basis of non-encrypted storage card encryption on the increase in logic circuits, through the efficacy password means to protect the card data for external access is open.
C: CPU card (microprocessor IC card): The IC card with a microprocessor CPU features, storage unit (including the random-access memory RAM, program memory ROM (FLASH), user data memory EEPROM) as well as the chip operating system COS and so on, with COS of the CPU card is equivalent to a micro-computer, not only has data storage capabilities, both the command processing and data security protection.
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