Specialty: Support each engine with multi-card, a card for 4 channels, support PAL\ NTSC, all channels can be work noninterferencely by each other at the same time. Support compress current\preview current\fold year\month\day\hour\min\sec, text. and fold the pictures, mosaic also. Support dynamic AVI picture pick-up Support 4 channels recording compress all the time. Provide the function of high -speed ball\middle speed ball\flat roof and alarm linkage. Equipment with the hardware watchdog function and simulate video output. Provide full-scale hypo-exploiture bag function, it can be apply to the system development, eg; security surveillance\medical treatment\communication and bank etc.