ABC News covers inauguration in 720p HD

February 2, 2005

ABC News presented its coverage of the 2005 Presidential Inauguration ceremonies in the 720p high-definition format. The network augmented the coverage with remote shots from cameras placed at the Pentagon and Arlington Cemetery using a microwave transmission system consisting of JVC’s DM-JV600U HD MPEG-2 encoder and DM-D4600UC MPEG-2 decoder, and Nucomm’s Analog-Coder microwave system.

The DM-JV600U MPEG-2 encoder takes the uncompressed HDTV signals from the HD cameras, and compresses them into a 25Mb/s transport stream. The transport stream is then fed to the Nucomm system, where it is converted and transmitted to a receiving station. The microwave signal is demodulated back to the 25Mb/s transport stream and fed to a production trailer. In the trailer, JVC's decoder converts the MPEG-2 data into a 720p feed for ABC's HDTV telecast. The signal is also converted to SD for transmission to ABC's regular feed.

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