Search results
Results from the WOW.Com Content Network
UID-marking is a set of data for assets that is globally unique and unambiguous. The technology used to mark an item is 2D Data Matrix ECC 200 Symbol. UID marking can be used to ensure data integrity and data quality throughout an item's lifecycle; it also supports multi-faceted business applications.
A Data Matrix on a Mini PCI card, encoding the serial number 15C06E115AZC72983004. The most popular application for Data Matrix is marking small items, due to the code's ability to encode fifty characters in a symbol that is readable at 2 or 3 mm 2 (0.003 or 0.005 sq in) and the fact that the code can be read with only a 20% contrast ratio. [1]
For items that are not subject to DFARS mandated marking, the Data Matrix ECC 200 symbol using ISO/IEC 15434 syntax and the semantics of ISO/IEC 15418 or ATA CSDD is preferred. Unless specified below, MH10.8.7 is the MRI marking protocol that should be used to mark all items. MIL-STD-130 compliant 2D matrix
ECC could be said to work by "averaging noise"; since each data bit affects many transmitted symbols, the corruption of some symbols by noise usually allows the original user data to be extracted from the other, uncorrupted received symbols that also depend on the same user data.
The encoding process assumes a code of RS(N, K) which results in N codewords of length N symbols each storing K symbols of data, being generated, that are then sent over an erasure channel. Any combination of K codewords received at the other end is enough to reconstruct all of the N codewords.
The N 2 chart or N 2 diagram (pronounced "en-two" or "en-squared") is a chart or diagram in the shape of a matrix, representing functional or physical interfaces between system elements. It is used to systematically identify, define, tabulate, design, and analyze functional and physical interfaces.
The total matrix capacity for a full symbol can be calculated as (112+16*L)*L for a full Aztec code and (88+16*L)*L for a compact Aztec code, where L is the symbol size in layers. [4] As an example, the total matrix capacity of a compact Aztec code with 1 layer is 104 bits. Since code words are six bits, this gives 17 code words and two extra bits.
1:quiet zone, 2:Start Code B, 3:data, 4:checksum, 5:stop . A Code 128 barcode has seven sections: Quiet zone; Start symbol; Encoded data; Check symbol (mandatory) Stop symbol; Final bar (often considered part of the stop symbol) Quiet zone; The check symbol is calculated from a weighted sum (modulo 103) of all the symbols.