Deinterleaving method and deinterleaving system performing the same

A method of processing data, the method comprising:

• in a system including a decoder and a plurality of buffers,
• by a first buffer of the plurality of buffers, the first buffer storing data to be processed for error correction, dividing the data to be processed for error correction into first data blocks of a first number of bits;
• performing deinterleaving on the first data blocks;
• dividing deinterleaved data into second data blocks of a second number of bits and outputting the second data blocks to a second buffer of the plurality of buffers;
• by the second buffer, outputting the second data blocks to the decoder;
• and
• by the decoder, performing error correction on the second data blocks;
• wherein the first number of bits is determined based on a minimum switching unit of a deinterleaving operation and the second number of bits.