Think you know what 1080i is?

Coursedesign wrote on 1/24/2006, 11:51 AM
Some pearls from a Video Systems article:

Looking first at the transmission/storage of 1080i, the reference standard is our ATSC standard of 1920x1080. While this standard applies to over-the-air, it does not apply to satellite, cable, or optical discs. DirecTV, for example, transmits 1080i as a 1280x1080 image, as do some cable systems.

The above are the easy parts. Got that? :O)

I love my OTA. No compression, no squeezing, no 1280x720 BS, just clean 1920x1080 feeding a purely digital DVI-D cable to my projector or widescreen LCD monitor. And the monthly fee? Bwah-ha-ha-ha :O)!

Comments

baysidebas wrote on 1/24/2006, 12:35 PM
High-def ‘down-converting’ forced
Consortium backs technology to prevent piracy on analog signals
By Paul Sweeting 1/19/2006

JAN. 19 | Some buyers of HD DVD and Blu-ray Disc players might not get everything they bargained for.

In a deal reached this week after tense negotiations, the eight-company consortium behind the Advanced Access Content System, created for use by both high-def formats to prevent unauthorized copying, has agreed to require hardware makers to bar some high-def signals from being sent from players to displays over analog connections, sources said.

Instead, the affected analog signal must be “down-converted” from the full 1920x1080 lines of resolution the players are capable of outputting to 960x540 lines—a resolution closer to standard DVDs than to high-def. Standard DVDs are typically encoded at 720 horizontal by 480 vertical lines of resolution.

Read the rest of the article here.