character encoding

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character encoding

(character)
(Or "character encoding scheme") A mapping of binary values to code positions and back; generally a 1:1 (bijective) mapping.

In the case of ASCII, this is generally a f(x)=x mapping: code point 65 maps to the byte value 65, and vice versa. This is possible because ASCII uses only code positions representable as single bytes, i.e., values between 0 and 255, at most. (US-ASCII only uses values 0 to 127, in fact.)

Unicode and many CJK coded character sets use many more than 255 positions, requiring more complex mappings: sometimes the characters are mapped onto pairs of bytes (see DBCS). In many cases, this breaks programs that assume a one-to-one mapping of bytes to characters, and so, for example, treat any occurrance of the byte value 13 as a carriage return. To avoid this problem, character encodings such as UTF-8 were devised.
References in periodicals archive ?
In advance of the transition to the ICD-10 codeset, e-MDs committed major resources to ensure its systems and customers were ready.
6b a small percentage of blocks require higher embedding power to bring desired codeset into advantage.
ZiLOG is in the unique position of providing not only world class silicon, in this case the Crimzon(R) Family of 8-bit MCUs, but access to an industry-leading infrared codeset database, a complete suite of development tools, customized firmware and software and use of expert design and engineering resources to assist customers in bringing products to market rapidly and cost effectively.
The paper describes experiments using nCounter CodeSets to profile the expression of 509 human genes in a single multiplexed assay, analysis of a gene set that overlaps with the MAQC gene expression study and quantitation of transcript levels for 21 sea urchin genes across 7 embryo samples.
The nCounter Analysis System is comprised of a fully automated prep station, a digital analyzer, the CodeSet (barcodes) and all of the reagents and consumables needed to perform the analysis.
Built-in volume punch-through eliminates user mode switching, and direct code entry that simplifies manufacturer codeset selection.
INTRAnet Jazz Server: -The enhanced web server for the corporate intranet -- A combined All-in-One Communications Server and Proxy Server -- Designed to deliver rich hypermedia information across an enterprise -- High-performance, case-hardened, extended and portable -- Based on CERN/W3C consortium standard, proven codeset -- Includes AlphaBrowser for character terminal web access Supported Platforms: Windows NT, IBM AIX and SCO UNIX -- CGI (Common Gateway Interface) 1.
The pernership is aimed at offering users with IR codes and codesets allowing for easier setup of Audio/Video equipment and integration due to the common use of the companies' respective products.
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The nCounter([R]) Copy Number Variation CodeSets enable researchers to interrogate up to 800 regions of the human genome in a single multiplexed reaction with the least hands-on time of any CNV platform.
Language Engine Access Portal (LEAP) enables web access to codesets and provides users with ability to create custom subsets and mappings to facilitate creation of codified problem and medication lists