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DSSS <Direct spread system>
Full spelling: Direct Sequence Spread Spectrum
Field:
Portable telephone > 3G > DSSS |
At one of systems of spectrum spread, dispersing the digital signal to wide band by very small electric power, those which it transmits simultaneously. While communicating noise occurring, when reconstructing because noise spreads, influence to communication is little. In addition, because the strong signal is not generated, it is difficult to disturb the communication of other things. In resistance obstacle characteristic it is inferior to FH-SS, but transmission rate is fast, is suitable for the communication of multi opposites one. IEEE 802.11b of the wireless LAN has used DS-SS, There is a hybrid system which mixes FH-SS and DS-SS and both in the CDMA system which is used by the portable telephone |
DSSSL
Reading: DSS s l
Full spelling: Document Style Semantics and Specification Language
Field:
Expression of information > markup language > DSSSL |
The language which seeing the SGML document prospers and it describes. Procedure processing is possible making use of Scheme language, has done there is a feature such that consideration concerning internationalization. which is used in description of the seeing prospering of the XML document has designated DSSSL as the base. |
DSTN liquid crystal
Reading: D s tea n you obtain and do to start the [yo] [u]
Full spelling: Dual-scan Super Twisted Nematic
Field:
Imaging > display > liquid crystal > DSTN liquid crystal |
| One of types of liquid crystal. 2 dividing the indicatory department, it is the improved STN system which it scans simultaneously, raises speed of response. Because the time when voltage is added by comparison with STN reaches 2 times, contrast and the like is improved. Efficiency is inferior from TFT system, low it is utilized in the indicatory part and the like of the notebook PC and the portable telephone of price. |
D-Subminiature <D-Sub>
Field:
Personal computer > I/O > D-Subminiature
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| One of the connector form which is used in telecommunications. there is a type of 9 pins, 15 pins, 25 pins and 50 pins etc depending upon the number of pins. From the fact that shape of section has been similar to D of alphabet this way it is said that it reached the point where it is called. The connector where the pin has been attached the connector where the hole where the male and the pin are inserted has lined up is called the female. It is used as the connector of the serial port and the parallel port and the display port. |
