Презентация, доклад на тему Coding Information

SIW
Theme: Coding Information

Took: Shaimerdenova G. S.

coding
Encoding image information
Encoding of integers and real numbers
Coding of audio information
CONCLUSION REFERENDES

- the process of presentation of information in the form of a code.
To communicate with each other, we use the code - the Russian language. When speaking this code is transmitted sounds, writing - letters. The driver transmits a signal via buzzer or flashing lights.

to the fact that it is surprisingly versatile machine. Everyone who has ever faced with it, knows that lesson arithmetical calculations is not the main method of using a computer. Computers perfectly reproduce music and videos, they can be used to organize, voice and video conferencing on the Internet, create and edit graphics and the ability to use the computer in the field of computer games at first glance looks absolutely incompatible with the image of the super calculating machine, the grinding of hundreds of millions of numbers per second.

form with the help of a sequence of characters. Rule display one set of characters to another is called a code. reporting method using two symbols - called 0 and 1 binary code. Encoding binary code data. According to different ways of encoding information appearing as technology advances. In the second half XIX American inventor Samuel Morse invented the amazing code that serves humanity until now.

8 bits - one byte.
Byte - is the smallest unit of information processing. With a single byte can encode 28 = 256 characters.
There is a table with keyboard codes. The first codes 32 to 127 are standard and obligatory for all countries and all computers in the second half (128-255), each country can create its own standard - national. The first half is called the ASCII (American Standard Code for Information Interchange).

the three primary colors: red, green, and blue (referred to as color component). If you encode the color points with three bytes (24 bits), the first byte will carry information about the red component, the second - green, and the third - the blue.

computers that were used in scientific and military research, for the first time in graphical form has been realized representation of the data. It is now widely used technologies of processing graphical information by using a PC. The graphical user interface was the "de facto" standard for software of different classes, ranging from operating systems. This is probably due to the property of the human psyche: the visibility contributes to a more rapid understanding.

is represented as a raster image, which is formed of a number of rows, which in turn contain a certain number of dots (pixels). Each pixel is assigned a code that stores information about the pixel color.
For black-and-white image (no halftone) pixel can take only two states: "white" or "black". Then encode 1 bit is enough:1 - white,0 - black.Pixel on a color display can have different colors. to a standard form.

is to make every codeword symbol be the weighted sum of the various input message symbols. This is like convolution used in LTI systems to find the output of a system, when you know the input and impulse response.
So we generally find the output of the system convolutional encoder, which is the convolution of the input bit, against the states of the convolution encoder, registers.
Fundamentally, convolutional codes do not offer more protection against noise than an equivalent block code. In many cases, they generally offer greater simplicity of implementation over a block code of equal power. The encoder is usually a simple circuit which has state memory and some feedback logic, normally XOR gates. The decoder can be implemented in software or firmware.

standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates
AAC supports inclusion of 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 16 low frequency effects (LFE, limited to 120 Hz) channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in joint stereo mode

to go, would you take ten minutes to do so? Why not just give him the address and go? It you are going to tell a mechanic what is wrong with your car, why spend days explaining it? Why not explain it in a single sentence?
Program (in terms of time and/or storage); a study to which people have dedicated their entire careers. There are many professional journals that deal with nothing else. But it suggests that there is pre-existing best program in nature, apart from the programmers efforts. That is, there is an entropy associated with programs, just as there is a predictable pattern of the behaviour of comets or of other entities that occur in

A picture showing scratches on the readable surface of a CD-R. Music and data CDs ...
en.wikipedia.org/wiki/Information_theory
Coding theory - Wikipedia, the free encyclopedia
Codes are studied by various scientific disciplines—such as information theory, electrical engineering, mathematics, and computer science—for the purpose of ...
Code - Wikipedia, the free encyclopedia
Theory[edit]. Main article: Coding theory. In information theory and computer science, a code is usually considered