
Overview:
The IP Video Door Phone System supports video capture and streaming from Entry Units to Apartment Units as well as two way audio conversations via an on-board microphone and speaker. One can make a call to an Apartment Block via Entry Units placed at the doors and the call can be answered by any of the Apartment Units in that block.
Both Entry Units and Apartment Units have LCD displays with built-in Touch-Screen interface and keypads. An Entry Unit is mounted with a CMOS camera module and the SoC of both units have integrated hardware accelerators for video encoding and decoding. Thus one can experience real time video streaming at full frame rate from Entry Units to Apartment Units. The LCD (customizable to required resolution) and the touch screen interface provide a rich GUI experience similar to those in smart phones available today. The presence of an AEC (Acoustic Echo Cancellation) chip on the audio path handles any acoustic echoes that are generated by such a system and ensures that the listener will never hear the echo of his own voice. The Apartment Units may support a standard off-the-shelf telephone handset, or can be hands-free.
A full-featured IP Video Intercom System:
Built on TI DM365 Digital media processor SoC with ARM926EJ-S™ Core at 270/300 MHz running on MontaVista Linux kernel
Uses MPEG4 media compressed video and G.711 audio in a media container transported using RTP/RTSP
Features:
Custom call handling and call processing function via software application running on the ARM CPU.
Open source components GStreamer, and AVServer are run on a constrained memory footprint.
UI interface using QT framework.
Benefits:
IP-Based design allows scalability to fit any size installation
Video bandwidth configurable from 1-6 Mbps