It was in 2006 that The Digital Bits reported that tests were being done to bring Star Trek The Original Series to HD as retelecine/remastered with new effects. Now In 2007 The Digital Bits mentions that tests have been done for The Next Generation.
"They further revealed that tests had been done for a possible future Star Trek: The Next Generation - Remastered effort."
-Bill Hunt of The Digital Bits gave us his two cents at
San Diego Comic Con,http://www.tvshowsondvd.com/newsitem.cfm?NewsID=7762
Star Trek: The Next Generation
live action footage originally shot on 35mm film, telecined to standard definition video and edited from that (probably 1" analog originally then D2 or D1 tape).
and the final masters were on videotape - at 480i standard definition video.
Since it was shot on film it is 'possible' to telecine the 35mm film to 1920x1080/24p and conform the show in this manner, with a 1.33:1 ratio as it was framed originally with black pillar bars.
the series cg special effects were created and output to standard definition video, which is the cause analog video artifacts from early seasons.
The visual effects 'could' be recreated and updated. This would be a considerable cost and many months of work and if Paramount does not see the return on investment by the public purchasing enough of the seasons in HD box sets then they will not do it.
the same goes for the other 2 ST series in the 1990s:
TNG was, and Deep Space Nine & Voyager are filmed in 35mm (primarily Kodak 7298, 500ASA) using Panavision cameras. The film is transferred to videotape, and post-production is done on video.
also see another thread on this from July over at hometheaterforum.com:
Star Trek TNG possible HD versionshttp://www.hometheaterforum.com/htf/...d.php?t=259966
as well as my post on the Star Trek TOS going HD-DVD.http://www.avsforum.com/avs-vb/showt...=902094&page=4