Protocol in order is mounted on the rooter of the Cisco Systems corporation, make to do multiplexing the rooter. After shaking IP address one at a time, furthermore one IP address is allotted to the whole rooter which is multiplexed in each rooter, the case where it communicates request is transmitted to IP address for the whole. The rooter which is used for usual communication at one, does communication the rooter which is in the midst of using it stops in place of the rooter which another rooter 1 unit stops automatically. The time when it is necessary for change 1 seconds. There is VRRP in similar technology, but there is no interoperability.

HSUPA

Reading: H s u tweet a
Full spelling: High Speed Uplink Packet Access
Field:
Portable telephone > 3G > HSUPA
Portable telephone > data communication > HSUPA

The 3rd generation whom NTT [dokomo] and the like has employed (3G) the standard which accelerates the data communication of portable telephone system “W-CDMA”. Also “3.5G” is called from the fact that it is the revised edition of 3G system, actualizes the transmission speed above former 5 times.

HSUPA rises and (the terminal -> base station) with the technology which improves the packet transmission speed of direction, until recently it is possible being highest, 5.76Mbps (theoretical value) to pull up the transmission speed which is 384kbps.

The descent (base station -> the terminal) the standard which accelerates direction is called, “HSDPA” (High Speed Downlink Packet Access) with “Release 5” of 3GPP which is issued in 2002 March is standardized with standard. In Japan NTT [dokomo] in 2006 August with name of “FOMA high speed”, software bank Mobile with name of “3G high speed”, has introduced HSDPA respectively in 2006 October. When HSUPA and HSUPA are named generically “HSPA” (High Speed Packet Access) with together, it is.

HSYNC <Horizontal synchronizing signal>

Reading: H sink
Full spelling: Horizontal Synchronizing signal
Field:
Imaging > display > structure > HSYNC

The occasion where the picture is drawn with the television and CRT display, the signal in order to measure the timing of horizontal direction. In these equipment the occasion where drawing is done, when the electron gun irradiates the beam with respect to the picture left, moves parallel to the right, reaches to right hand edge the single step going down, and it is irradiated from the left to the right. This is repeated to the lowest step, similar scan is repeated from with respect to the left. The case where these operations are done the fact that timing of horizontal direction is decided is HSYNC. Frequency of this signal is called horizontal scanning frequency, but when the language, HSYNC is used in sense of this frequency, it is.

hTc Z

Reading: [eichiteishizui]
Field:
Portable telephone > terminal > hTc Z
Mobile > PDA > Windows > hTc Z

At one of FOMA portable telephone of NTT [dokomo], smart phone of HTC corporation make. It is one kind of portable information terminal (PDA) which builds in the function of the portable telephone. It can operate with the touch screen making use of other than and the stylus pen etc the input by the key. “Microsoft Windows Mobile 5.0 software for Pocket PC Phone Edition Japanese edition” is adopted to OS.

hTc Z has built in wireless LAN function, connecting to Internet via this, it can do the sending and receiving of Web perusal and the mail. With Windows Mobile 5.0 Direct Push technology, as for mail check by manual operation it can receive the mail automatically in similar real time to the usual portable telephone without necessity. In addition, it is different from the portable telephone and as for constitution of the key because it is close to the keyboard of the personal computer, letter input is easier than the portable telephone, also compilation and the like of the mail becomes simple.