Mobile Tech Glossary--A

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A-GPS - Assisted GPS is a system commonly found in CDMA mobile phones in the US that offloads some of the processing requirements of a typical GPS receiver to a central server that can perform the calculation...

A2DP - The Advanced Audio Distribution Profile is a Bluetooth profile that allows for the wireless transmission of stereo audio from an A2DP source (typically a phone or computer) to an A2DP receiver (a set ...

active matrix - Active matrix LCD displays are known for their superior performance when compared with passive matrix LCD technologies. From the user's perspective, an active matrix display has higher contrast and b...

Airtime - The amount of time a subscriber spends using his/her mobile phone...

AMPS - North America's AMPS and its variants used elsewhere in the world are the antiquated analog cellular phone networks used before the advent of digital technologies such as GSM and CDMA. AMPS was first...

AMR (Adaptive Multi-Rate) - AMR is a speech coder standard introduced by the 3rd Generation Partnership Project (3GPP), a partnership project of various standards organizations, developed to preserve high speech quality under a ...

Analog - The standard, pre-digital mobile phone technology � the norm until recently (e.g. 1G). It has lower call quality and is a major security risk. ...

aperture - The aperture of a lens system is the opening between the actual lens elements, typically made of glass or plastic, and the camera's digital sensor that translates the light into image data. Aperture ...

auto-focus - Autofocus refers to a camera lens' ability to adjust its configuration in order to focus properly on a subject regardless of whether it is near or far from the camera. Autofocus lenses generally prov...