Sony Ericsson Walkman W200 White Paper page 49

USSD
Unstructured Supplementary Services Data. Nar-
row-band GSM data service.
vCard
vCard automates the exchange of personal infor-
mation typically found on a traditional business
card, for use in applications such as Internet mail,
Voicemail, Web browsers, telephony applications,
call centers, conferences, PIMs /PDAs, pagers, fax,
office equipment, and smart cards. vCard is speci-
fied by IETF.
VGA
Video Graphics Array. Graphics standard intro-
duced by IBM, having a resolution of 640x480 pix-
els.
VHF
Very high frequency. A band of radio frequencies
falling between 30 and 300 MegaHertz.
WAP
Wireless Application Protocol. Handheld devices,
low bandwidth, binary coded, a deck/card meta-
phor to specify a service. A card is typically a unit
of interaction with the user, that is, either presenta-
tion of information or request for information from
the user. A collection of cards is called a deck,
which usually constitutes a service.
WAV
Waveform Audio File.
WBMP
Wireless BitMap. A graphic format optimized for
mobile computing devices.
WML
Wireless Markup Language. A markup language
used for authoring services, fulfilling the same pur-
pose as HyperText Markup Language (HTML) does
on the World Wide Web (WWW). In contrast to
HTML, WML is designed to fit small handheld
devices.
WSP
Wireless Session Protocol
XHTML
Extensible HyperText Markup Language
49
White paper W200
April 2007