VideoCrunch® – Efficient Video Compression and Decompression Implemented in VHDL Code and as a Microchip
AVT has developed a real-time hardware implementation of its patented video compression algorithm and has also fabricated a custom microchip. The VideoCrunch® hardware efficiently performs filtration, compression and decompression, reassembly, repair, and synchronization of video streams making it suitable for low-power devices such as cellphones or surveillance systems. The resulting low bit-rate data stream enables low-cost video transport over cellular or other wireless networks. This technology is fully compatible with the international MPEG-4 standard for codecs.
The VideoCrunch® Codec is protected by US Patent 7,792,191.
AVT’s VideoCrunch® Codec Performs Efficient End-to-End Processing of the Video Stream
- Filter out pixels that are unchanged from the previous video frame
- Use AVT’s patented motion estimation algorithm to identify pixels that have moved but are otherwise unchanged
- Compress the resulting video data along with the audio signal
- Transmit the data via a cellular or other wireless network
- Decompress the received video data
- Identify and repair data that was lost or damaged
- Reassemble the video data
- Generate the best possible image for display on the screen
- Synchronize the video with the audio
This results in a realistic video experience while using only a small amount of power and a low bit-rate cellular or wireless connection.
The VCU 3000 — An Application of AVT’s VideoCrunch® Technology
ATV’s VCU 3000 VideoCrunch® Unit is an implementation of this technology that is targeted for surveillance applications. It provides a motion-activated live video feed transmitted from cameras at remote locations to a personal computer or cellphone in real time. The VCU 3000™ could be placed in a remote location, such as a boat, RV, construction equipment, vacation home, or airplane cockpit, and its video camera is motion activated so that any intrusion triggers the unit to start relaying images thereby alerting the asset owner and capturing images of the intruder. The unit will begin recording within a second after being triggered and will transmit images shortly thereafter.