BS ISO IEC 19762-2:2008 pdf free download

BS ISO IEC 19762-2:2008 pdf free download

BS ISO IEC 19762-2:2008 pdf free download Information technology — Automatic identification and data capture (AIDC) techniques — Harmonized vocabulary Part 2: Optically readable media (ORM)
1 Scope
This part of ISO/IEC 19762 provides terms and definitions unique to optically readable media (ORM) in the area of automatic identification and data capture techniques. This glossary of terms enables the communication between non-specialist users and specialists in ORM through a common understanding of basic and advanced concepts.
2 Classification of entries The numbering system employed within ISO/IEC 19762 is in the format nn.nn.nnn, in which the first two numbers (nn.nn.nnn) represent the “Top Level” reflecting whether the term is related to 01 = common to all AIDC 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 time locating systems, and 08 = MIIM. The second two numbers (nn.nn.nnn) represent the “Mid Level” reflecting whether 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 a sequence of terms.
The numbering in this part of ISO/IEC 19762 employs “Top Level” numbers (nn.nn.nnn) of 02, 03, and 04.
3 Terms and definitions
optically readable medium
member of the set of automatic identification techniques such as a linear bar code, two-dimensional, mark sense, or optical character recognition (OCR) symbols, that are illuminated by a light source and examined by an optical detector that converts the received reflectance into electrical signals that are grouped in a predetermined method, recognized by the reader and converted into the corresponding computer code
standard means of representing data in optically machine readable form
NOTE Each symbology specification sets out its particular rules of composition or symbol architecture.
bar code symbol
combination of symbol characters and features required by a particular symbology which together form a complete scannable entity
symbol architecture
structure of a bar code symbol
NOTE See symbology.
dark element corresponding to a region of a scan reflectance profile below the global threshold
quiet zone
area free from interfering markings which must surround a bar code symbol and, in particular, precede the
start character and follow the stop character
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 auxiliary character. Decoding through the compaction rules is necessary to identify the data.
coded character set
set of single characters that are mapped onto their byte values according to a linear bar code or two dimensional symbology