Storage device and operating method of the storage device
A memory device may include a data receiver configured to receive a plurality of read data chunks from a plurality of memory areas which transmit and receive data through one channel, a data compressor configured to generate a plurality of compressed data chunks from each of the plurality of read data chunks and a data output unit configured to simultaneously output the plurality of compressed data through the channel in response to a data output command.
1. A memory device comprising:
a data receiver configured to determine a number of read data chunks based on a predetermined compression ratio, the read data chunks received from memory areas which transmit and receive data through one channel;
a data compressor configured to generate compressed data chunks which correspond to each of the memory areas based on the read data chunks; and
a data output unit configured to generate an output data chunk including all of the compressed data chunks which are generated at one output cycle and output the output data chunk through the channel in response to a data output command.
2. The memory device of claim 1 , wherein the data output unit simultaneously receives the compressed data chunks through data lines, and
wherein the compressed data chunks are included in the output chunk according to a mapping order associated with the memory areas in the one output cycle.
3. The memory device of claim 1 , wherein the data compressor performs a sampling operation of extracting bits having a first logic value among bits included in each of the read data chunks, and
the data compressor generates the compressed data chunks including the bits having the first logic value and position information representing positions of the bits having the first logic value in each of the read data chunks.
4. The memory device of claim 1 , wherein the data compressor further configured to:
divide the read data chunks into a plurality of partial data chunks;
generate the compressed data chunks in each of the plurality of partial data chunks; and
transmit the compressed data chunks to the data output unit according to an order in which the plurality of partial data chunks are located in each of the read data chunks.
5. The memory device of claim 4 , wherein each of the compressed data chunks includes N bits representing the position information and M bits representing the first logic value; and
wherein the data compressor determines a size of each of the plurality of partial data chunks as a number of bits, the number of bits being calculated by the formula M*(2{circumflex over ( )}N) based on the M bits and the N bits.
6. The memory device of claim 4 , wherein the data compressor determines a number of the compressed data chunks generated from the plurality of partial data chunks, based on the predetermined compression ratio; and
the data compressor generates the compressed data chunks corresponding to the determined number.
7. The memory device of claim 1 ,
wherein a total amount of the output data chunk is equal to a total amount of read data chunks that the data receiver receives from one of the memory areas during the one output cycle through the channel.