Development of Digital Video Compression and Transmission System with One of Industry’s lowest Compression delays by NEC
NEC made an announcement on development of a new digital video compression and transmission system featuring low compression delays of 10 milliseconds. The new VC-7700 series has been designed to fulfill the requirement of broadcast operators and telecom carriers in reducing the amount of delay which occurs due to the communication time lag between shooting locations and studios during live broadcasting. The Vc-7700 series is capable of compressing large volume video signals like those from HD cameras, and then transmits this data to broadcasting centers. The system is capable of transmitting video signals in real time, thanks to NEC’s ultra high quality and ultra low delay encoding algorithm reducing delay time to 10 msec.
The new VC-7700 series is in compliance with H.264 High422Profile@LEVEL4.1 , a worldwide video compression standard. Among some of the main features of the VC-7700 is its capability of transmitting ancillary data signals, like digital subtitle data and control signals between broadcasting stations, removing any needs for additional equipments, plus the system supports various audio compression methods such as MPEG-2 AAC-LC, MPEG-2-BC, MPEG-1 Layer2 as well as non-compressed LPCM. Furthermore, for video output, transmission interface such as DVB-ASI and IP can be selected depending on the transmission network. NEC will start shipping the VC-7700 form October 2010 in Japan, with the expectation of expanding to international markets. NEC is planning a sale of 2,000 systems within the next three years.
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