資料來源 : pyDict
無線電,收音機無線的,無線電訊的,收音機的
資料來源 : Webster's Revised Unabridged Dictionary (1913)
Wireless \Wire"less\, a.
Having no wire; specif. (Elec.), designating, or pertaining
to, a method of telegraphy, telephony, etc., in which the
messages, etc., are transmitted through space by electric
waves; as, a wireless message.
{Wireless} {telegraphy or telegraph} (Elec.), any system of
telegraphy employing no connecting wire or wires between
the transmitting and receiving stations.
Note: Although more or less successful researchers were made
on the subject by Joseph Henry, Hertz, Oliver Lodge,
and others, the first commercially successful system
was that of Guglielmo Marconi, patented in March, 1897.
Marconi employed electric waves of high frequency set
up by an induction coil in an oscillator, these waves
being launched into space through a lofty antenna. The
receiving apparatus consisted of another antenna in
circuit with a coherer and small battery for operating
through a relay the ordinary telegraphic receiver. This
apparatus contains the essential features of all the
systems now in use.
{Wireless telephone}, an apparatus or contrivance for
wireless telephony.
{Wireless telephony}, telephony without wires, usually
employing electric waves of high frequency emitted from an
oscillator or generator, as in wireless telegraphy. A
telephone transmitter causes fluctuations in these waves,
it being the fluctuations only which affect the receiver.
Wireless \Wire"less\, a.
Having no wire; specif. (Elec.), designating, or pertaining
to, a method of telegraphy, telephony, etc., in which the
messages, etc., are transmitted through space by electric
waves; as, a wireless message.
{Wireless} {telegraphy or telegraph} (Elec.), any system of
telegraphy employing no connecting wire or wires between
the transmitting and receiving stations.
Note: Although more or less successful researchers were made
on the subject by Joseph Henry, Hertz, Oliver Lodge,
and others, the first commercially successful system
was that of Guglielmo Marconi, patented in March, 1897.
Marconi employed electric waves of high frequency set
up by an induction coil in an oscillator, these waves
being launched into space through a lofty antenna. The
receiving apparatus consisted of another antenna in
circuit with a coherer and small battery for operating
through a relay the ordinary telegraphic receiver. This
apparatus contains the essential features of all the
systems now in use.
{Wireless telephone}, an apparatus or contrivance for
wireless telephony.
{Wireless telephony}, telephony without wires, usually
employing electric waves of high frequency emitted from an
oscillator or generator, as in wireless telegraphy. A
telephone transmitter causes fluctuations in these waves,
it being the fluctuations only which affect the receiver.
Wireless \Wire"less\, n.
Short for {Wireless telegraphy}, {Wireless telephony}, etc.;
as, to send a message by wireless.
資料來源 : WordNet®
wireless
adj : having no wires; "a wireless security system" [ant: {wired}]
wireless
n 1: medium for communication [syn: {radio}, {radiocommunication}]
2: transmission by radio waves
3: an electronic receiver that detects and demodulates and
amplifies transmitted signals [syn: {radio receiver}, {receiving
set}, {radio set}, {radio}, {tuner}]
4: a communication system based on broadcasting electromagnetic
waves [syn: {radio}]
資料來源 : Free On-Line Dictionary of Computing
wireless
A term describing a computer {network} where
there is no physical connection (either copper cable or {fibre
optics}) between sender and receiver, but instead they are
connected by radio.
Applications for wireless networks include multi-party
{teleconferencing}, distributed work sessions, {personal
digital assistant}s, and electronic newspapers. They include
the transmission of voice, video, {image}s, and data, each
traffic type with possibly differing {bandwidth} and
quality-of-service requirements. The wireless network
components of a complete source-destination path requires
consideration of mobility, {hand-off}, and varying
transmission and {bandwidth} conditions. The wired/wireless
network combination provides a severe bandwidth mismatch, as
well as vastly different error conditions. The processing
capability of fixed vs. mobile terminals may be expected to
differ significantly. This then leads to such issues to be
addressed in this environment as {admission control},
{capacity assignment} and {hand-off} control in the wireless
domain, flow and error control over the complete end-to-end
path, dynamic bandwidth control to accommodate bandwidth
mismatch and/or varying processing capability.
{Usenet} newsgroup {news:comp.std.wireless}.
(1995-02-27)