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--- tanszek:oktatas:techcomm:coding [2024/10/07 18:08] – created knehez
+++ tanszek:oktatas:techcomm:coding [2024/10/08 06:01] (current) – knehez
@@ Line 1: / Line 1: @@
 [[Huffman codes]]
+A lossless compression algorithm that assigns shorter binary codes to more frequent symbols and longer codes to less frequent ones, optimizing the average code length.
+[[Reed-Solomon codes]]
+These error-correcting codes are used to detect and fix burst errors in data transmission or storage by working on symbols, not just bits.
 [[RLE coding]]
+A simple compression technique that encodes consecutive repeating characters or bits with a single symbol and a repetition count, reducing storage size for repetitive data patterns.
 [[LZW coding]]
+A lossless data compression algorithm that replaces repeated patterns in the input with shorter codes, dynamically builds a dictionary of substrings.
 [[Multimedia compression]]
+Covers lossy and lossless techniques used to reduce the size of multimedia files like images, audio, and video by discarding less perceptible data or optimizing storage efficiency.
 [[Jpeg compression]]
+A lossy image compression method that reduces file size by converting color spaces, applying a Discrete Cosine Transform (DCT), and using quantization and entropy coding.
 [[Mpeg compression]]
+A standard for compressing video and audio by reducing spatial and temporal redundancies, using frame types (I, P, B) and motion compensation for efficient storage and transmission.
 [[Character encoding]]
+Explains systems like ASCII, ANSI, ISO standards, and Unicode for representing characters in digital formats.
 [[UTF-8 encoding]]
+A variable-length encoding system that compresses Unicode characters into 1 to 6 bytes depending on the character range, ensuring compatibility with ASCII.
 [[Base64 coding]]
+A method for encoding binary data into text using 64 symbols, ensuring safe transmission of data in text-only formats like email or URLs. It's commonly used in MIME for email attachments.