Home' RTCA Documents for Review : DO-230H FRAC Contents Appendix B
©2017 RTCA, Inc.
Authentication – The process of establishing the legitimacy of a node or user before allowing access to
requested information. During the process, the user enters a name or account number (identification) and
Authentication Token – A portable device used for authenticating a user, authentication tokens operate by
challenge/response, time-based code sequences, or other techniques.
Authentication Types –
‘Something you know’ – Passwords (cognitive, dynamic, one time, passphrase, static), PINs,
specific information known only to the subject;
‘Something you have’ – Smart cards, proximity cards, magnetic stripe cards, identification tokens,
keys, ID badges, passports, transponders; and /or
‘Something you are’ – Biometrics.
Authorization – The process of determining what areas of activities are permitted and normally providing
authentication; i.e., once a user and primary credential are authenticated (via password, PIN, biometrics),
authorization to access certain areas or perform certain activities is given different areas of access or
Automatic Brightness Control – Electronic circuitry that automatically controls video monitor brightness
in relation to ambient light
Automatic Frequency Control (AFC) – Circuitry that automatically maintains the desired frequency.
Automatic Gain Control (AGC) – Circuitry that automatically adjusts the signal to proper strength; e.g.,
amplifies existing video to help camera create an enhanced video signal at low light levels.
Automatic iris – A device within a camera lens that self-adjusts to light level changes allowing the iris to
open or close to control the amount of light as passes through the lens.
Automatic Light Control – Process by which the brightness upon the camera pick-up device is
automatically adjusted according to the brightness of the scene.
Back focus – The distance from the final glass surface of a lens to the focused image
Backlight Compensation – A feature that compensates for bright backgrounds so foreground objects aren't
Bandpass – Specific range of frequencies allowed to pass-through a device.
Bandwidth – Capacity of a network or data connection, the amount and rate of data often measured in
kilobits/second (kbps) for digital transmissions.
Barcode – A machine-readable representation of information in a visual format on a surface. Originally
barcodes stored data in the widths and spacing of printed parallel lines and now in patterns of dots,
concentric circles, and hidden in images.
BIAS – Biometric Identity Assurance Services; the base standard developed by INCITS (ANSI INCITS
442) to provide the biometrics and security industries with a documented, open framework for deploying
and invoking identity assurance capabilities that can be readily accessed as services. The OASIS BIAS
Integration TC defines and describes methods and bindings by which the INCITS BIAS framework can be
used within XML-based transactional Web services and service-oriented architectures.
BioAPI – Biometrics Application Programming Interface, open standard for a biometric API was approved
as an ANSI Standard (February, 2002).
Links Archive Navigation Previous Page Next Page