Specifications

A Technical Companion to Windows Embedded Automotive 7 106
that is presenting a Windows® Sockets
Specification 1.1 interface.
TFAT—Transaction-safe FAT. A TFAT file
system is a file system that is designed
specifically to provide transaction safety for
data that is stored on a disk. TFAT requires
a hardware-specific driver that is designed
for the type of media on which the TFAT
volume resides.
TLB—Translation Lookaside Buffer. A TLB is
a CPU cache that memory management
hardware uses to improve virtual address
translation speed.
TMC—Traffic Message Channel. TMC is
digitally encoded traffic and travel
information (typically encoded using FM-
RDS).
UART—Universal Asynchronous
Receiver/Transmitter. UART is computer
hardware component (an individual or a
part of an integrated circuit) that translates
data between parallel and serial forms.
UARTs are now commonly included in
microcontrollers.
UPL—Update Loader.
USB—Universal Serial Bus. USB is a serial
bus standard for interface devices that is
designed to let peripherals be connected by
using a single standardized interface socket,
improving plug-and-play capabilities
because devices can be connected and
disconnected without restarting the
computer (called hot swapping).
vCard—A file format standard for electronic
business cards. vCards are frequently
attached to email messages but they can
also be exchanged on the World Wide Web.
vCards can contain name and address
information, telephone numbers, URLs,
logos, photographs, and audio clips.
VPN—Virtual Private Network. A VPN is a
computer network in which some of the
links between nodes are carried by open
connections or by virtual circuits in some
larger networks (such as the Internet), as
opposed to running across a single private
network.
VSP—Virtual Serial Port. A VSP is a
redirector without network software
support that is usually used to create a pair
of back-to-back virtual COM ports on the
same computer.
WAV—Waveform Audio Format. WAV is a
Microsoft and IBM audio file format
standard for storing an audio bitstream on a
computer. It is a variation of the RIFF
(Resource Interchange File Format, a
generic meta-format for storing data in
tagged chunks) bitstream format method
for storing data in “chunks” and it is the
main format used on Windows for raw and
typically uncompressed audio. The default
bitstream encoding is the Microsoft Pulse
Code Modulation (LPCM) format.
Wi-Fi—Wireless Fidelity. Wi-Fi is a wireless
technology that promotes standards for the
interoperability of wireless local area
network products based on the Institute of
Electrical and Electronics Engineers (IEEE)
802.11 standards. Common applications for
Wi-Fi include Internet and voice over IP
(VoIP) phone access, gaming, and network
connectivity for consumer electronics.
WMA—Windows Media Audio. WMA is an
audio data compression technology. WMA
can refer to the audio file format or its
audio codecs.
WPL—Windows Media Player Playlist. WPL
is a computer file format that stores
multimedia playlists.