1Introduction
The
●DVR is a digital device that stores video and audio data by using a hard disk drive, unlike a video cassette recorder using video tapes. DVR enables users to easily play back and search stored data, and edit and send data which are stored in digital signal format.
Users can compress, store and send moving images, and search listings on an hourly or daily, camera unit and event basis by using this DVR with standard video and data com- pression technology.