BS ISO IEC 19762-2 pdf download – Information technology — Automatic identification and data capture (AIDC) techniques — Harmonized vocabulary Part 2: Optically readable media (ORM)
1 Scope
This part of lSO/EC 19762 provides terms and definitions unique to optically readable media (ORM) in thearea of automatic identification and data capture techniques. This glossary of terms enables thecommunication between non-specialist users and specialists in ORM through a common understanding ofbasic and advanced concepts.
2Classification of entries
The numbering system employed within lSO/IEC 19762 is in the format nn.nn.nnn, in which the first twonumbers (nn.nn.nnn) represent the”Top Level” reflecting whether the term is related to 01 = common to allAIDC techniques,02 = common to all optically readable media,03 = linear bar code symbols,04 = two-dimensional symbols,05 = radio frequency identification, 06 = general terms relating to radio,07 = real timelocating systems, and 08 = MIM.The second two numbers (nn.nn.nnn) represent the”Mid Level” reflectingwhether the term is related to 01 = basic concepts/data,02 = technical features， 03 = symbology，04=hardware, and 05 = applications. The third two or three numbers (nn.nn.nnn) represent the”Fine” reflecting asequence of terms.
The numbering in this part of lSO/IEC 19762 employs “Top Level” numbers (nn.nn.nnn) of 02,03, and 04.
3Terms and definitions
02.01.01
optically readable mediumORM
member of the set of automatic identification techniques such as a linear bar code, two-dimensional, marksense, or optical character recognition (OCR) symbols, that are illuminated by a light source and examined byan optical detector that converts the received reflectance into electrical signals that are grouped in apredetermined method, recognized by the reader and converted into the corresponding computer code
02.01.02
symbology
standard means of representing data in optically machine readable form
NOTE Each symbology specification sets out its particular rules of composition or symbol architecture.
02.01.03
bar code symbol
combination of symbol characters and features required by a particular symbology which together form acomplete scannable entity
02.01.04
symbol architecture
structure of a bar code symbolNOTESee symbology.02.01.05
bar
dark element corresponding to a region of a scan reflectance profile below the global threshold02.01.06
quiet zone
area free from interfering markings which must surround a bar code symbol and, in particular, precede thestart character and follow the stop character
02.01.07
symbol character
physical representation of the codeword as a pattern of dark and light elements
NOTE There may be no direct one-to-one mapping between symbol character and data character or auxiliarycharacter. Decoding through the compaction rules is necessary to identify the data.
02.01.08
coded character set
set of single characters that are mapped onto their byte values according to a linear bar code or twodimensional symbology
02.01.09
bar code character Seesymbol character.
02.01.10
x dimension
specified width of the narrow elements in a bar code symbol or the specified width of a single element in atwo-dimensional symbol
cf.Z dimension
02.01.11
Y dimension
specified height of the elements in a linear bar code symbol or a row in a multi-row symbologycf. bar height
02.01.12z dimension
average achieved width of the narrow elementsin a bar code symbol, equal to half the sum of the averagenarrow bar width and the average narrow space width in two-width symbologies,or to the quotient of theaverage overall character width divided by the number of modules per character in modular symbologies
BS ISO IEC 19762-2 pdf download – Information technology — Automatic identification and data capture (AIDC) techniques — Harmonized vocabulary Part 2: Optically readable media (ORM)
