Digital video recorder especially for use in domestic security systems has a single chip containing the required data processing circuits and interfaces for connection of one or more types of flash memory card or stick

摘要

Digital video recorder (20) to which at least a security camera (30), which can record both video and sound, is connected, has at least a memory unit (204, 206) for storage of digital video and audio data and a chip (220) that combines a number of circuits. Said circuits include a video conversion circuit (221), an audio conversion circuit (222), a signal compression circuit (223) and a detection circuit (225) for detecting the movement of objects within a monitored area using the audiovisual data. The memory used with the recorder can be any of the available flash cards or memory sticks.