Floyd-Steinberg method <Error spread method>

Alias:
Random dither method, random dither ring, random dithering
Field:
Multimedia > graphics > Floyd-Steinberg method

Supplying the restriction of indicatory color number, the dither ring which expresses the gradation of color smoothly (dithering) with one of the drawing technique which is called. It was devised Robert W. by Floyd and Louis Steinberg in 1975. Floyd-Steinberg method is used with digital camera and image scanner, printer and FAX etc.

With Floyd-Steinberg method, gradation of the color which can be indicated being limited, when the gradation which is detailed than that (color number) liking to express, it expresses the picture, as gathering of the small point the part where color is dense crowds the point where color is dense, the part whose color is thin reduces the density of the point. Because of this, as expressed with the color number which is more than actual color number, it is visible.

FMC

Reading: F m sea
Full spelling: Fixed Mobile Convergence
Field:
Portable telephone > industry > FMC
Communication service > FMC

The portable telephone in the house it seems that, you can use as the receiver of the fixing telephone form of the communication service which fuses mobile communication and wire communication.

As for FMC of narrow sense, like example ahead mobile communication and wire communication being both the identical terminal according to the place, and circumstance with thing of technology and the service which it can utilize, the service which utilizes the portable telephone as the receiver of the cordless telephone of home and the extension of enterprise is offered. Enjoying the telephone call fee where the fixing telephone is cheap by the portable telephone, being wherever inside and outside the corporation there is a merit such that it reaches the point where communication is attached by one portable telephone.

In a broad sense, pointing to all technology and the service which cooperate mobile communication and wire communication closely, trying to open the Web mail in the same way as the personal computer of the portable telephone, program execution function using it can mount the instant messenger, the personal computer and letter can communicate it is included to the case that it does.

FM sound source

Reading: F m it is the [ge] it is
Full spelling: Freqency Modulation Synthesizer
Field:
Multimedia > sound/music > FM sound source

One kind of synthetic sound source which can create the various timbre making use of frequency modulation. It is possible to form rich sound with little parameter. Acoustooptical person John Chowning of the Stanford University (John [chiyouningu]) the principle which the doctor invents Yamaha acquiring the license, those which commercialize.

The operator who outputs the sine wave is combined 2 - 6, frequency of each output wave is modulated and the complicated timbre is reproduced by synthesizing. In the product of part it is possible also to combine the ripple mark other than the sine wave.

Making the sound source of the personal computer and the game machine it was widely used from the eighties extending through nineties. There are times when it is used recently in the one for arrival melody playback of the portable telephone.

FM teletext <FM multiplex telecasting>

Reading: F m the [ji] it is [ji] [yu] [u] one so
Field:
Multimedia > broadcast > FM teletext

Adjusting to the aural signal, the FM radio broadcast which transmits information in printing simultaneously. When broadcast is received with the radio which corresponds, information in printing such as news and weather forecast and information of traffic is indicated in display. Tune name and artist name of the tune which now is flowing can also make indicate.

Accepting the fact that it is utilized is reported in the radio wave supervision conference 1994, service was started in 1996. Digitalizing information in printing in the frequency which is a little higher than the stereo aural signal of FM broadcast, it has been superimposed. As for information in printing if you compare to sound, because the amount of information many beams are few, there are no times when influence appears in the sound quality and the like.

FOAF

Reading: F o a f
Full spelling: Friend of a Friend
Field:
WWW > Sight > community > FOAF

Concerning the relationship of the human describing in the form where the computer can handle the data, the project which by the fact that you gather the information, it tries to analyze the character and the like which is expressed from the being connected of the people on the web. In addition, description type of the information which the same project decides. The file which describes the information regarding the people calls the FOAF file, uses RDF/XML to description.

For describing because special knowledge becomes necessary, necessary item to form just is entered can draw up the FOAF file, there is also a support tool, “FOAF-a-matic”. The fact that you describe, for example self introduction and, someone to know each other, with, is the information which is said. By the fact that such information is gathered, it can do the illustration and the like of friend relationship.