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Ultra2 SCSI <Narrow Ultra2 SCSI>
Reading: [urutoratsusukaji]
Field:
Personal computer > I/O > SCSI > Ultra2 SCSI
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At portion of the parallel SCSI standard which is included in SCSI-3 standard, those which furthermore strengthen Ultra SCSI specification. Simultaneous transfer capacity is specification of transfer rate 40MB/s at 8 bit width.
The connector cable to use those of 68 pin connectors, as for the maximum connection quantity at 8 as for cable maximum length 12m.
You can use the new differential drive system where with Ultra2 SCSI, other than the single-end drive system differential drive system which is used until recently, “LVD” (Low Voltage Differential) with you say.
LVD operates with 3.3V vis-a-vis former differential drive driving at the voltage of 5V. Because of this, former differential drive system is called also. |
Ultra320 SCSI <Ultra4 SCSI>
Reading: Ultra [bi] [ya] [ku] rainbow [yu] [u] [sukaji]
Field:
Personal computer > I/O > SCSI > Ultra320 SCSI
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At portion of the parallel SCSI standard which is included in SCSI-3 standard, Ultra3 SCSI those which furthermore improve standard. At the beginning the standard which was called “Ultra4 SCSI”.
Data rate has with 320MB/s of 2 times that Ultra160 SCSI, compatibility of the current SCSI equipment. It corresponds to error correction by the CRC mark which is adopted for also Ultra3 SCSI and [paketsutaizudo] SCSI etc which does the simultaneous transmission of plural command messages.
As for simultaneous transfer capacity at 16 bit width, as for drive system the differential (LVD), being connection possible to the maximum of 16 units, as for maximum cable length 12m.
The data transfer quantity of 2 times is actualized by the fact that the operational frequency of Ultra160 SCSI is designated as 2 times, but in order to show efficiency in the maximum, from the fact that the host bus above the bus becomes necessary, those where time is required it is estimated in spread.
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Ultra3G <Ultra 3G>
Field:
Portable telephone > 3G > Ultra3G
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It is the next generation network conception which KDDI lectures, integrates radio wire. It integrates the wire network of radio network and ADSL and the optical circuit etc which are represented in the portable telephone and the like, whether the circuit which is used the radio or wire saying do in the air, what it tries to be able to receive service is purpose.
That with the fourth generation mobile communication (4G) which, follows to 3G it can allot the frequency zone of 5 - 6GHz band from the general affairs ministry it assumes that you can see, can do the high-speed communication of maximum 100Mbps. Ultra3G integrates the radio network for the portable telephone which also the new communication method of 4G and the like includes, and the wire network of ADSL and the like offer of the service which does not depend on access expedient it is the conception which is lectured as purpose, lectures like “super 3G”, as the basis which is directed to 4G it differs from new data communication system
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Ultra3 SCSI
Reading: The Ur truss lease rudder
Field:
Personal computer > I/O > SCSI > Ultra3 SCSI
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At portion of the parallel SCSI standard which is included in SCSI-3 standard, those which furthermore improve Ultra2 SCSI standard.
The double edge clocking which obtains the frequency of 2 times the startup of the clock pulse and making use of the both of the fall, at the time of error correction and the first starting by the CRC mark it is required that domain Bali day decides the optimum transfer rate between the host adapter and the SCSI device the minimum of one among five functions of Shaun, [paketsutaizudo] SCSI and quick arbitration is mounted.
But, because with just this the ambiguity of specification remains, in order to guarantee the compatibility between each company products, defines, the standard which more concrete specification is decided. The one of them the Quantum corporation and the like being center, of the transfer rate 160MB/s which is decided in 1998 September (Ultra160/m SCSI) with, double edge clocking, CRC, be sure to have meant domain Bali day to mount Shaun's three.
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Ultra4 SCSI <Ultra320 SCSI>
Field:
Personal computer > I/O > SCSI > Ultra4 SCSI
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At portion of the parallel SCSI standard which is included in SCSI-3 standard, Ultra3 SCSI (Ultra160 SCSI) those which furthermore improve standard. At the beginning the standard which was called “Ultra4 SCSI”.
Data rate has with 320MB/s of 2 times that Ultra160 SCSI, compatibility of the current SCSI equipment. It corresponds to error correction by the CRC mark which is adopted for also Ultra3 SCSI and [paketsutaizudo] SCSI etc which does the simultaneous transmission of plural command messages.
As for simultaneous transfer capacity at 16 bit width, as for drive system the differential (LVD), being connection possible to the maximum of 16 units, as for maximum cable length 12m.
The data transfer quantity of 2 times is actualized by the fact that the operational frequency of Ultra160 SCSI is designated as 2 times, but in order to show efficiency in the maximum, from the fact that the host bus above the bus becomes necessary, those where time is required it is estimated in spread.
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