JVC Professional APRIL 2007 NAB-2007 The ProHD Report
Copyright 2007 JVC Professional Products Company All rights reserved
Page 34 of 43
Panasonic HPX500 2/3-inch 3CCD
• Native imager acquisition 960x640p60 plus 2-dimensional pixel shift/offset
• DVCPRO-HD recording of 1280x1080i60 max resolution
• DVCPRO-HD recording of 960x720p60 max resolution
• Compressed DVCPRO-HD bitrate = 120Mbps (approx gross)
• HD-SDI out
• Interchangeable lens
And, here are the JVC ProHD competitive features:
JVC GY-HD250U 1/3-inch 3CCD
• Native acquisition 1280x720p60 (No tricks needed)
• ProHD recording of full ATSC 1280x720p60 resolution
• Compressed MPEG-2 GOP transport stream = 20Mbps (19.7)
• HD-SDI out
• Interchangeable lens
• SD Pool feed input
Panasonic has recently announced their new AVC-Intra CODEC which does provide
for full ATSC bandwidth mode, but at a compressed bitrate of 100Mbps. A 50Mbps
mode will be available, but this is still high for HD ENG implementations within
existing ENG work flows. AVC-Intra is scheduled for first deliveries in the summer
of 2007. Based on prior experience with new HD compression formats, it will
take some time before industry partners are ready to fully support the brand
new format in workstations, laptop editors, servers and networks.
Native Acquisition & Pixels per Second presented
To the Home HDTV
Earlier in this Report (page 10), we discussed “the total number of effective
maximum pixels per second” being presented to the home viewer through the home
HDTV, and the effect of the Kell/Interlace factor in substantially decreasing the total
perceived resolution for interlaced video while barely affecting progressive video. It
seems obvious that such pixels per second presentation may be limited by the
following:
• Native acquisition resolution in the HD camcorder
• Limiting resolutions in HD camcorder recording
• Limiting resolutions through the post & delivery chain
• Native resolution of home HDTV
