Short for run-length limited encoding, RLL encoding is a method of storing information on computer a hard drive, floppy disk, CD, DVD, and Blu-ray that was first invented by IBM. This method of storage is carried out by hardware in the disk controller and is less prevalent than the MFM (modified frequency modulation) encoding scheme.

ARLL, or Advanced Run-length Limited, is a more advanced version of RLL.

Computer abbreviations, Hard drive terms, RLE

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