Skhynix Inc.

Sogang University Research Business Development Foundation

Changgyu Lee

Youngjae Kim

Woo Suk Chung

Sungyong Park

Seungjin Lee

Kyoung Ki Park

Jung Ki Noh

Donggyu Park

Inhyuk Park

Mingyo Jung

A key-value (KV) based data storage device configured to process one or more range query commands includes a first table, summary data, a Log-Structured merge (LSM) tree area storing a plurality of second tables forming an LSM tree structure, and a value log area storing a value corresponding to a key stored in the LSM tree structure. The summary data includes version data including a global version representing current states of the first table and the plurality of second tables. The KV based storage device adds a copy version of the global version in the version data when initiating processing of a range query command and refers to that copy version while processing that range query command.

Key-value based data storage device and operation method thereof

A system includes an application processor configured to generate a read request and including a data memory; a host processor configured to generate a read command corresponding to the read request; and a data storage device including a data storage memory, wherein the data storage device transmits read data output from the data storage device according to the read command to the data memory of the application processor without passing the host processor.

System including an application processor and a data storage device providing data

Growing community of inventors

Seoul, South Korea

Changgyu Lee