Browse Definitions :
Definition

UTF-16 (16- bit Unicode Transformation Format)

UTF-16 (16- bit Unicode Transformation Format) is a standard method of encoding Unicode character data. Part of the Unicode Standard version 3.0 (and higher-numbered versions), UTF-16 has the capacity to encode all currently defined Unicode characters. UTF-16 is specified in Annex Q of the ISO/IEC 10646 standard and in the IETF RFC 2781.

Unicode is designed to accommodate all of the world's known writing systems. The system currently employs three different encodings to represent Unicode character sets: UTF-8, UTF-16 and UTF-32. Each encoding defines a system whereby characters in some character set may be represented in binary form in a file . Each such binary representation of a character is called a code point. Unicode can define over one million distinct encodings (10FFFF code points in hexadecimal ; 1,114,112 in decimal). Unicode code points are divided into 17 planes, of which Planes 0 through 2 are most common:

  • Plane 0, known as the Basic Multilingual Pane (BMP) contains characters for almost all modern languages as well as most common special characters.
  • Plane 1, known as the Supplementary Multilingual Plane (SMP) is used primarily for historic scripts such as Linear B and for musical and mathematical symbols .
  • Plane 2, known as the Supplementary Ideographic Plane (SIP), is used for about 40,000 Unified Han Ideographs seldom used in daily written communications.
The remaining planes are, as yet, largely unused.

UTF-16 encodes characters into specific binary sequences using either one or two 16-bit sequences. Because there are three different encoding schemes to map code points to 8-bit or octet sequences, there are three different encoding schemes around the basic 16-bit sequence model.

UTF-16 is sometimes used interchangeably with UCS-2 although such use is not strictly correct.

This was last updated in March 2011

Continue Reading About UTF-16 (16- bit Unicode Transformation Format)

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • threat modeling

    Threat modeling is a procedure for optimizing application, system or business process security by identifying objectives and ...

  • distributed denial-of-service (DDoS) attack

    A distributed denial-of-service (DDoS) attack is one in which multiple compromised computer systems attack a target, such as a ...

  • social engineering

    Social engineering is an attack vector that relies heavily on human interaction and often involves manipulating people into ...

SearchHealthIT
SearchDisasterRecovery
  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

SearchStorage
  • bare-metal cloud

    Bare-metal cloud is a public cloud service that offers dedicated hardware resources without any installed operating systems or ...

  • race condition

    A race condition is an undesirable situation that occurs when a device or system attempts to perform two or more operations at ...

  • storage security

    Storage security is the group of parameters and settings that make storage resources available to authorized users and trusted ...

Close