| 摘要 |
PURPOSE: A full digital multi DVR interphone is provided to transmit, output and store image and sound signals inputted from a plurality of places in digital signals. CONSTITUTION: A central processing unit (22) generates a control signal and an output signal through signal processing procedure of a digital signal delivered from a monitoring unit (10). A DVR (26) and a universal serial bus (USB) memory (30) classifies and stores the digital signal by the date and time according to the control signal delivered from the central processing unit. A liquid crystal display (LCD) monitor (23) outputs images according to the output signal delivered from the central processing unit. A speaker (25) outputs voice. [Reference numerals] (22) Central processing unit; (23) LCD monitor; (25) Speaker; (26) Storage unit; (27) Communication module; (30) USB memory; (40) External monitoring device; (50) Mobile phone |
