Abbreviation of “demilitarized zone”. In the network which is connected to Internet, with the fire wall from external network (Internet) and it is the area which from internal network (network which is while organizing) is isolated. If it leaves the server who is released outside in here, be able to remove the illegitimate access from outside due to the fire wall, there are no times when damage reaches to internal network even with when in addition by any chance the open server is taken over.

DNA computer <DNA computer>

Reading: D n a computer
Field:
IT and society > information science > DNA computer

DNA which is high-molecular transmits the information of heredity of the living thing (the deoxyribonucleic acid) the computer which it utilizes as the calculation element. As the one of the RSA cryptographic device people in 1994 it was lectured famous Leonard M. by Adleman.

DNA has kept information of heredity of the living thing “A” (adenine), “T” (the thymine), “G” (guanine), “C” (cytosine) with the arrangement of the molecule which is called four bases. In four bases like “A-T” “G-C” there is a character which is connected complimentarily, in addition, the enzyme which administers cutting connection and the like vis-a-vis a certain fixed base arrangement exists. Making use of these characters, information is expressed with the arrangement of the base, the fact that it utilizes DNA by the fact that cutting and connection are diagnosed in transaction of operation as the calculating machine is basic idea of the DNA computer.

DNR <Digital noise reduction>

Reading: D n earl
Full spelling: Digital Noise Reduction
Field:
Multimedia > home appliance /AV equipment > DNR

With digital processing decrease the noise which exists together in the image signal. There is many a thing which especially points to the thing of the processing which decreases the noise which exists together in the image signal the hard disk recorder and the DVD player, in the video deck and the television etc.

As DNR technique of the typical image signal, noise in the luminance signal (the flicker plate to be attached) and noise in the carrier chrominance signal (excessive lust information) there is a method of removing respectively by the luminance signal (Y) with separating the carrier chrominance signal (C) from the image signal and it administers digital processing (Y/C separation), vis-a-vis respectively.

3 dimensional digital noise reduction which to in addition to, detects noise from finite difference of each every frame of image and removes (3DNR) and the like there is a technique. There is a technique which utilizes the finite difference between the frame in the same way to also the occasion where it separates Y/C (3 dimensional Y/C separation).

DNS <Digital nervous system>

Full spelling: Digital Nervous System
Field:
Enterprise information system > business system > DNS

The information system which can do the access to all items of information inside enterprise and the communication to company internal all field smoothly. Being something which William Henry Gates of the Microsoft corporation founder lectures in 1999, it is expatiated upon “management of book with thought speed” of the same person.

It compares to the nervous system of the human, the expression, “nervous” is used. It is the system which supports the speedy decision making of enterprise by raising the utilization efficiency of information to the extremity.

To build up this kind of system, the computer which is connected to network must be disposed the one per person. On that, it is necessary for database and [metsusejingushisutemu] and the business application which are integrated high-level to be offered.