High speed of the next generation SCSI standard. Being maximum, daisy chain connection or the tree it can connect 63 devices, as for transfer rate 100Mbps, 200Mbps and 400Mbps are standardized.

It is designed in such a way that the equipment is taken out and put in (calls the hot plug while operating) to be able thing, also can supply the power source by the connector cable. There is also the movement which is utilized inside LAN the home to which IEEE 1394 is expected connects the home appliance mutually as the standard which connects the computer and the peripheral device. Already, the external output terminal of the digital video camera (industry has been adopted has named the “DV terminal”).

As for the term of endearment of IEEE 1394 with “FireWire”, the name which was used the occasion where development is advanced originally with Apple corporation main leadership is adopted. In addition, also the standard which SONY calls i.Link is IEEE 1394.

IEEE 1394a

Alias:
1394
Field:
Personal computer > I/O > SCSI > IEEE 1394a
Multimedia > home appliance /AV equipment > IEEE 1394a

High speed of the next generation SCSI standard. Being maximum, daisy chain connection or the tree it can connect 63 devices, as for transfer rate 100Mbps, 200Mbps and 400Mbps are standardized.

It is designed in such a way that the equipment is taken out and put in (calls the hot plug while operating) to be able thing, also can supply the power source by the connector cable. There is also the movement which is utilized inside LAN the home to which IEEE 1394a is expected connects the home appliance mutually as the standard which connects the computer and the peripheral device. Already, the external output terminal of the digital video camera (industry has been adopted has named the “DV terminal”).

As for the term of endearment of IEEE 1394a with “FireWire”, the name which was used the occasion where development is advanced originally with Apple corporation main leadership is adopted. In addition, also the standard which SONY calls i.Link is IEEE 1394a.

IEEE 1394b

Reading: [aitoripurui] it is and the [chi] comes and the [yu] [u] it is B
Field:
Personal computer > I/O > SCSI > IEEE 1394b
Multimedia > home appliance /AV equipment > IEEE 1394b

The high speed which is utilized with the personal computer and the digital video camera and the AV home appliance etc one of serial communication standard. In the revised edition of IEEE 1394a which is decided in 2000, it was announced in 2002.

Former IEEE 1394a transmission speed was the highest 400Mbps, but with IEEE 1394b each specification of 800Mbps, 1.6Gbps and 3.2Gbps was standardized, (being fact, in the product gradual correspondence,). In addition, the cable which can be used also UTP (the seal it is not from twisted pair line,) and the optical fiber became available in addition to STP (from sealed attachment twisted pair line).

IEEE 1394b supposing that it utilizes in the foam/home network which ties between the equipment, longest transmission distance was extended to 100m. Connector form and to be modified by those of 9 pins, the system where coding system for data transmission differ until recently is adopted.

IEEE 802.11

Reading: [aitoripuruihachimarunitenichiichi]
Alias:
802.11
Field:
LAN > Wireless LAN > IEEE 802.11

IEEE 802.11a

Reading: [aitoripuruihachimarunitenichiichie]
Alias:
802.11a
Field:
LAN > Wireless LAN > IEEE 802.11a

IEEE (the American Institute of Electrical and $electronic Engineer) with at one of standard of the wireless LAN where 802 commissions which decide the standard of LAN technology decide, the specification which does the communication of approximately 54Mbps with the radio of the 5.2GHz band.

Frequency zone around 5.2GHz is used, OFDM system, as for MAC layer CSMA/CA is adopted same as IEEE 802.11 to modulation technique.

Transmission rate with 36 - 54Mbps, has accelerated substantially from approximately 11Mbps of approximately 2Mbps and IEEE 802.11b of IEEE 802.11 first standard.

In Japan 5.15G - 5.25GHz were allotted by the one for high-speed wireless LAN, the corresponding product appeared from 2002. Specification decision is advanced as the additional function of 802.11a, in order to mount “IEEE 802.11h” specification, the commercialization of 802.11a at the beginning was late from schedule.

IEEE 802.11b

Reading: [aitoripuruihachimarunitenichiichibi]
Alias:
802.11b and IEEE 802.11 High-Rate
Field:
LAN > Wireless LAN > IEEE 802.11b

IEEE (the American Institute of Electrical and $electronic Engineer) with at one of standard of the wireless LAN where 802 commissions which decide the standard of LAN technology decide, the specification which does the communication of approximately 11Mbps with the radio of the 2.4GHz band. Simply when such as “the wireless LAN”, when it points to the thing of this standard is many.

Without radio license radio wave of the 2.4GHz band which can be used freely (the ISM band) you use, you can do communication between the terminals which at the speed of 11Mbps are in the distance of 50m - 100m.

Past “IEEE 802.11” with standard the transmission speed which is 2Mbps is improved 5 times or more at a stroke, the number of terminals is expected to be many real spread at the office and the like where wiring cost does not become foolish.

When the microwave oven and the medical application equipment and the Bluetooth corresponding product etc which, use the radio wave of the same 2.4GHz band is a vicinity there are times when transmission speed falls by radio wave interference.