Tmaxdata Co., Ltd.

Korea Institute of Industrial Technology

Tmaxdataco., Ltd.

Jae Seok An

Sang Young Park

Sangyoung Park

Ingyu Kang

Jooho Kim

Gi-Soo Chung

Dae-Hoon Lee

In Gyu Kang

Disclosed is a computer program stored in a computer readable storage medium, which includes encoded commands, in which when the computer program is executed by one or more processors of a computer system, the computer program allows the one or more processor to perform the following steps for indexing. The steps may include: deciding that a first leaf node is split in a tree index data structure including a parent node including one or more indexes, and the first leaf node and a second leaf node which are leaf nodes linked with the parent node through a pointer; generating a 1-2leaf node which is a next node of the first leaf node; storing in the 1-2leaf node an index to be split among indexes stored in the first leaf node; and linking the 1-2leaf node and the second leaf node to the pointer.

Computer device for providing tree index

A node search method, comprising: setting a current time value as a traversing time value; searching descendent nodes to perform a traversing from a root node to a leaf node according to a tree index data structure; determining whether a preset traversing condition is satisfied by comparing an update time value, which indicates a time when a change to a searched descendent node is made, with the traversing time value; depending on whether the traversing proceeding condition is satisfied, re-performing a traversing from a parent node or continuing traversing to the searched descendent node; and terminating the traversing at a leaf node where no descendent node exists.

Method and apparatus for searching node by using tree index

A data compression apparatus generates a global symbol table for an overlapping data using a part of the entire data to be compressed and a local symbol table that is not overlapped with the global symbol table and compressing data with a block as a unit. The apparatus increase compression efficiency.

Data compression apparatus and method

A process and system of producing conductive yarns in use for info-communication and conductive yarns produced thereby, in which the conductive yarns are produced using metal filaments. The process includes the steps of feeding a plurality of metal filaments, heating the plurality of metal filaments to soften the plurality of metal filaments, drafting the plurality of metal filaments and cutting the plurality of metal filaments into a plurality of slivers having a predetermined length, drawing and twisting the plurality of slivers into a yarn, winding the yarn on a bobbin, coating the yarn with a waterproof material and an electromagnetic shielding material in a thin film while unwinding the yarn from the bobbin, and drying the yarn, and covering the yarn with a textile yarn.

Growing community of inventors

Gyeonggi-do, South Korea

Jae Seok An