Combination of Powerful Encoder and Decoder offer Extreme 4:2:2 HD Video Quality

WAYNE, NJ (July 29, 2003) - JVC PROFESSIONAL PRODUCTS COMPANY announced today the formation of a cooperative relationship with Radyne ComStream (NASDAQ: RADN) to offer solutions for high-quality HDTV content distribution using MPEG-2 4:2:2 profile compression technology. The combination of these unique technologies creates a superior MPEG-2 4:2:2 HD delivery system ideal for high-quality, live-event distribution to theaters equipped for digital cinema.

“The unique combination of the JVC DM-D4600U decoder and the Tiernan THE15A encoder delivers a ground-breaking HD system never before available to the viewing public. We have combined two complementary high-performance technologies and created a solution for recording live events,” explained Lawrence Librach, assistant vice president of JVC PROFESSIONAL PRODUCTS COMPANY. “The purpose of the 4:2:2 process is to give the images a true live event appearance achieving extremely high-quality HD imagery. This system provides far more realistic and life-like images than conventional HD 4:2:0 systems.”

Radyne ComStream demonstrated its Tiernan THE15A 4:2:2 HD MPEG-2 encoder with the JVC DM-D4600U 4:2:2 HD MPEG-2 decoder at transport stream (TS) rates above 70Mbps, delivering high-quality images on a cinema-size screen over dark fiber. The Tiernan THE15A video compression process delivers superior HD images with TS rates of up to 108Mbps and seamless motion estimation across all picture areas.

The decompression functions of the DM-D4600 convert MPEG-2 transport streams smoothly into digital video signals and digital audio signals and features 5.1 channel Dolby Digital pass through for true surround sound quality.

“We are extremely pleased with the video content we are able to deliver with Tiernan and JVC compression technologies,” said Bob Fitting, Chief Executive Officer of Radyne ComStream Inc. “The combined system, currently available through Radyne ComStream and our resellers, is the first practical application where a 4:2:2 HD MPEG-2 transport stream is used for live events shown in digital cinema theaters.”

The combination of technologies is applicable beyond digital cinema distribution to HD video conferencing, distance learning for medicine and more. When used for HD video conferencing, the JVC/Radyne ComStream system offers end-to-end delays under 250mS. When coupled with surround-sound professional audio encoding solutions, this system creates more realistic HD images than is possible with 4:2:0 for truer, richer colors and clean, crisp pictures with no defects or artifacts.

Radyne ComStream designs, manufactures, sells, integrates and installs products, systems and software used for the transmission and reception of data and video over satellite, microwave and cable communication networks. The company, through the Tiernan subsidiary (, is a supplier of HDTV and SDTV encoding and transmission equipment. The company has offices in the U.S. located in Phoenix and San Diego, and internationally in Singapore, Beijing, Jakarta and London. The company also has sales and/or service centers in Sao Paulo, Bangalore, Shanghai and Moscow. For more information visit the Web site at


JVC PROFESSIONAL PRODUCTS COMPANY, located in Wayne, New Jersey, distributes a complete line of broadcast and professional equipment. For more information about this, or any other JVC PROFESSIONAL PRODUCTS COMPANY product, please contact JVC at (800) 582-5825, or Beth Marotta of PFS Marketwyse at 973-812-8883, or visit the JVC Web site at