At NAB2007, JVC announced a new collaboration with Broadcast Microwave Services (BMS) on an HD microwave camera transmission system for JVC's ProHD cameras.
The new ProHD Libre system provides native 60P HD capture, recording and transmission through a compact, on board camera-back transmitter developed for JVC by BMS. It features a JVC ProHD 200 series camera (and a Fujinon 16x lens) with a built-in Super Encoder that generates a high-quality MPEG-2 stream. The BMS HD Mini-Coder camera-back transmitter accepts the camera's compressed signal at 20Mb/s via the IEEE 1394 connection and modulates it at 64-QAM, then transmits COFDM with an 8MHz bandwidth in the 2GHz channel.
The entire transmitter is the size of a small outboard battery and uses the same mounting hardware. In a typical remote ENG configuration, the BMS receiver would feed the encoded ASI signal directly to the truck's microwave for relay back to the station. No additional encoding or delay is required.
The GY-HD200U and GY-HD250 are the only HD camcorders currently capable of delivering a broadcast quality full raster 1280x720 60p encoded transport stream over an IEEE 1394 connection at a bit rate of less than 21Mb/s.
Separately, the BMS HD Mini-Coder ProHD wireless kit, which includes both transmitter and diversity receiver, is currently available through both BMS and JVC.
For more information, visit pro.jvc.com.