Cradle is vertically integrated Video Surveillance Technology Company. Cradle is unique in it's offering of enVigil - we build the chip, the firmware (H.264 and MPEG4 encoders), the Janus card, the host Linux server software (which does the storage, streaming and server management) and also the remote Java based client software.
We use our own award winning, patented multi-core chip CT-3600 in enVigil.
Using the CT-3600 we have designed Janus, a PCI add-on card. Janus has a single CT-3600 with multiple A/D convertors. Each Janus card can process
- 16 channels MPEG-4 at CIF resolution (352x240) at 30 Frames per second each or
- 8 channels H.264 at CIF resolution (352x240) at 30 Frames per second each or equivalently
- 4 channels of MPEG-4 at D1 resolution (720x480) at 30 frames per second each or
- 2 channels of H.264 at D1 resolution (720x480) at 30 frames per second each or equivalently
- 8 channels of MPEG-4 at 1/2-D1 resolution (720x240) at 30 frames per second each or
- 4 channels of H.264 at 1/2-D1 resolution (720x240) at 30 frames per second (fps) each
An enVigil server can have up to 2 Janus cards supporting up to 32 cameras. Each camera can be set to record at anywhere from 1 fps to 30 fps each depending on your storage requirements (typically, the higher the fps, the higher the storage requirement). The quality of the recording can also be set independently - you can select a constant quality recording (here amount of storage will vary depending on the motion in front of the camera) OR you can select constant bit-rate (here the amount of storage will be the same regardless of the motion in front of the camera).
We recommend that our customers use 16 channels at full D1 resolution at 7.5 fps each with constant quality recording. This gives reasonably good motion rendition, and high picture resolution, and by using constant quality, the picture does not degrade with large amounts of motion in the scene.
enVigil inserts an I-frame every 1 second regarless of the fps - this means that when playing back, the nearest I frame is 1/2 a second away on the average.
mobile enVigil-M server will work with the DC power supply available in the mobile environment and is also vibration hardened. It uses 2.5" laptop hard disk which are more resistant to vibrations, but can only support up to 500 GB storage.