Patent ID: 8237793

Claim:
A monitoring system comprising: a plurality of data acquisition devices, each data acquisition device comprising: a video capture device to capture video as signals; a compression encoder to compress the video signals; a first central processing unit (CPU) to receive the compressed video signals from the compression encoder; a memory to store the compressed video signals from the first CPU; a first converter to read the compressed video signals stored in the memory via the first CPU, and convert the compressed video signals into physical layer transmission signals which are suitably transmitted in a twisted pair; a first microcontroller; a first decoder controlled by the first microcontroller to convert the physical layer transmission signals into low frequency pulse signals; a first digital to analog converter (DAC) to convert the low frequency pulse signals into analog signals; and a first transformer to convert the analog signals into voltage signals suitable for transmission, and output the voltage signals via a first network connection device; and a monitoring host connected to the plurality of data acquisition devices via a network cable, to receive and process the voltage signals to display the video.