At one of the types of JPEG of image compression format, it is the system which obtains high bulk compressibility making use of irreversibility compression. Originally, only Lossy JPEG there was JPEG, but of reversible compression from the fact that it is added, contrasting former system, it reached the point where it is used the occasion where it calls. Simply when such as JPEG, it points to the thing of Lossy JPEG.
But as for Lossy JPEG by allowing the deterioration of picture quality it can do to obtain high bulk compressibility, it is not possible to reconstruct the original picture completely. It designates picture quality as some sacrifice, it is possible to appoint with parameter of 10 stages, goes down picture quality with such as extent and as for the picture after the compressing the noise which raise bulk compressibility.
lossy compression <Irreversible compression>
Alias:
Irreversibility compression, [rotsushi] compression and lossy compression
Field:
Expression of information > data compression > lossy compression |
| Instead of allowing missing some data, the compressed system which raises compressed efficiency dramatically. There are also times when it calls Decoding the data which was compressed by irreversible compressed system, it is not possible to restore the data before the compressing completely.
Irreversible compression is used for the compression of the picture and image and sound etc. As for these data there being a deficiency and alteration of some data different from the program and the letter data, there are no times when meaning changes completely. Because of this, it does not shave the component which the human is difficult to recognize on the basis of the audiovisual quality of the human, is not visible in order/not to be audible, altering the data skillfully, it actualizes the compression whose quite efficiency is good.
The majority of the compressed types which adopt irreversible compression has the function which appoints compression, seriously considers which of quality and bulk compressibility to a greater extent according to use, it is designed in such a way that it can be appointed the case of compression. |
Lotus Notes <[rotasunotsu]>
Reading: [notsu]
Alias:
Notes and [notsu]
Field:
Enterprise information system > business system > Lotus Notes
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The user combining the function of document joint ownership, E-mail and the bulletin board system, etc it utilizes. Being very high-level, we have soft search function, we retain the document and the like which it is difficult to standardize in existing form, we are possible to do operation such as classification search rearranging. Because it is possible, to handle the data of various forms such as numeric data and picture and sound, not only the document it is possible to actualize the high-level knowledge joint ownership system. Recently, integration with Internet and Intranet is promoted positively e.g., it tries to be able to utilize the function of Notes from the Web browser. In order to utilize Notes, it makes the database and the program according to the line of business of enterprise and there is a [mu] necessity densely, also
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Lotus Notes Domino <Domino>
Alias:
Notes Domino, [notsudomino], domino and [rotasunotsudomino]
Field:
Enterprise information system > business system > Lotus Notes Domino
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Server software of groupware of Lotus Development corporation. Until recently, it was called the Notes server it could give the name, Domino, but attendant upon the integration of Web server function. It can utilize functional part as a groupware from the usual Web browser and the like even Domino as a single unit.
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LOVE LETTER <Love letter virus>
Reading: Love letter
Alias:
VBS.LoveLetter.A, I LOVE YOU and I-Worm.LoveLetter
Field:
Security > virus/worm > LOVE LETTER
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Violence was shaken in 2000 May, while repeating self-duplication, it does subversive activities, one “of the worm” programs. It is mounted on the product of the Microsoft corporation such as Windows and Outlook widely, it is written in the script language,
As for this worm, title reaches in the form of the E-mail which becomes The text “kindly check the attached LOVELETTER coming from me” with we have become please, that the attachment file is opened, you urge. As for the attachment file when with the script file, “LOVE-LETTER-FOR-YOU.TXT.vbs”, this is opened, the infection program of the worm is executed.
When you are infected, first, inspecting the memory of that computer, it tries it will detect the password, probably to send to the sight of the writer of the worm
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