escape sequence

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escape sequence

(character)
(Or "escape code") A series of characters starting with the escape character (ASCII 27). Escape sequences are often used to control display devices such as VDUs. An escape sequence might change the colour of subsequent text, reassign keys on the keyboard, change printer settings or reposition the cursor. The escape sequences of the DEC vt100 video terminal have become a de facto standard for this purpose.

The term is also used for any sequence of characters that temporarily suspends normal processing of a stream of characters to perform some special function. For example, the Hayes modem uses the sequence "+++" to escape to command mode in which characters are interpreted as commands to the modem itself rather than as data to pass through.

escape sequence

(1) A text command that begins with an escape code. Printers are often commanded by escape sequences. See escape code.

(2) In a modem, a unique sequence of characters that precedes a command. It allows modem commands (dial, hang up, etc.) to be transmitted with the data. See TIES and Hayes Smartmodem.
References in periodicals archive ?
Other new features include support for ODBC/JDBC escape sequences, such as outer joins, scalar functions, and date, time, and timestamp literals; support for retrieving connection information from Oracle's TNSNames file and the Sybase Interfaces file; and support for Oracle 9iR2.
In July 1992, again almost two years later, Multi-Tech filed further claims charging false advertising related to Hayes educational campaign about escape sequences.
The Hayes escape sequence technology, first introduced in Hayes Smartmodem products in 1981, was issued as U.
NYSE: LXK) today announced the Visual Bar Code Designer for easy creation of PCL escape sequences or PostScript commands to print bar codes using the Optra Bar Code SIMM.
Both of these orders have cleared the way for Hayes to proceed and Hayes is immediately offering a White Paper which explains the issue of escape sequences in plain language.
21 /PRNewswire/ -- United States District Courts in California and Minnesota have refused to prohibit Hayes efforts to educate the public concerning the difference between Time Independent Escape Sequence (TIES) modems and Hayes Patented Improved Escape Sequence With Guard Time modems.
Tun EMUL continues to boast emulations for an extensive list of UNIX, DEC, HP and IBM hosts, as well as fully customizable escape sequences, function keys and character tables.
Licensing of the Hayes '302 Patent at no cost to our customers ensures installed-base compatibility and avoids unsatisfactory performance brought on by using alternative escape sequences.
today announced a licensing agreement permitting Silicon Systems to incorporate the Hayes Escape Sequence With Guard Time Patent, also known as the Heatherington '302 Patent, into its modem chip sets.
The InterLynx/3287Plus asynchronous passthrough feature eliminates switching and escape sequences, permitting the active sharing of an ASCII parallel printer between the mainframe and PC or LAN.
that Hayes' recent education campaign about modem escape sequences and the related Test Kit are causing Multi-Tech to lose sales.
MULTI-TECH FIGHTS HAYES ESCAPE SEQUENCE EDUCATION CAMPAIGN