TK-H4400 Series Video & Audio Compression Card

The TK-H4400 Series video & audio compression card adopts highly flexible DSP and unique dedicated acceleration chip. Its algorithm efficiency is improved greatly in the software aspect. This not only improves the video & audio compression performance and the image quality, but also reduces the power consumption of card (less than 5W).

H.264 image compression standard and the G.729 sound compression standard are adopted to support 4-channel video input and 4-channel linear audio input. Synchronous preview and real-time compression of video images are all completed by the dedicated DSP and acceleration chip on the card. Video & audio real-time compression is completely realized by the hardware; no intervention of the PC¡¯s CPU is required throughout the entire video & audio preview and compression encoding process; and only a small amount of CPU resources is occupied.

Major Features

Image frame

The highly efficient H.264 compression algorithm technology is adopted to ensure clearer images and lower code stream;

The unique precise mobile detection technology ensures error-free operations;

Image compression

Support H.264 compression format;

Real-time compression, real-time preview;

Support multiple composite/quantified modes containing I-, B- and P-frame to promote image compression ratios;

Dynamic frame extraction is available during the compression process. Recovery can be performed at any time, which further reduces the storage space;

Preview and compression do not occupy any CPU time and therefore they do not interfere with each other.

Frame rate: adjustable between 1 ¨C 25 frames (PAL), adjustable between 1 ¨C 30 frames (NTSC);

Code rate: 20K ¨C 2Mbps; support three control modes CBR, VBR and Hybrid;

Playback transmission

The highly optimized decoding library enables multi-channel decoding to proceed simultaneously on more than 16 channel

Each channel supports 8-channel TCP/UDP transmission;

Each server supports 32-channel TCP/UDP transmission and multicast is not limited;

Low transmission delays;

Reliable and convenient

Advanced in manufacturing technology, and stable in structure;

Extremely low in power consumption, low in heat generation, and high in system reliability and stability;

Compressed image and resolution

Support CIF/QCIF;

Audio compression

An audio module is optional and it supports G.729 audio compression to guarantee the sound quality;

Function

Image brightness, contrast, gray level and degree of saturation can be adjusted dynamically;

Support superposition of the time, literal information and picture logo over the video images;

Support multi-area, multi-sensitivity mobile detection, and motion searching;

Support the function of mosaic covering in a specified area;

Support video loss alarm;

Support network real-time transmission of video & audio streams; and LAN delays no less than 0.5s;

Preview, playback and network transmission; and image capture can be done at any time;

Each card provides 8-channel alarm input and 5-channel alarm output;

Major Functions

Video

Video input: 4-channel video signals;

Supported systems: PAL, NTSC;

Resolutions: 352¡Á288/176¡Á144 (PAL);

320¡Á240/160¡Á120 (NTSC);

Frame rate: 25F/s, 30F/s;

Output code rate: 20kbps ¨C 2Mbps;

Audio

Speech input: 4-channel audio signals

Sampling rate: 8KHZ;

Output code rate: 16kbps;

Compression mode: G.729;