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hd stb

leshabitants24
05-14-2005, 05:42 AM
r there any hd stb's that automatically switch between 720p, 1080i or 480p depending on the feed? my bev recever here in toronto, canada makes u choose a resolution. but different stations send out different res. r all hd stb's like that?

branchbouncer
05-14-2005, 06:36 AM
States here:The stb that I use-2- Voom Motorola DSR 550 and the Hughes HTL-HD will adjust to the broadcast signal automatically or you can chose to "lock" the stb in one mode ie; 480p-720p-1080i

RSawdey
05-14-2005, 03:40 PM
What you are describing is usually called 'pass thru mode'... it's not as common as it should be... the 1080p/60 TVs will want it...

stevedee
05-14-2005, 06:40 PM
r there any hd stb's that automatically switch between 720p, 1080i or 480p depending on the feed? my bev recever here in toronto, canada makes u choose a resolution. but different stations send out different res. r all hd stb's like that?
Samsung's SIR-TS360 (DirecTV) has a lot of different output settings, 720p, 1080i, 480p, and three combinations. Very versatile.

Yeah, Fox, CBS, NBC, ABC, etc, broadcast at different resolutions. Since my TV (Samsung 4663) has a native resolution of 720p, I set the SIR-TS360 to output everything at 720p. Works great (for me).

RSawdey
05-14-2005, 09:28 PM
With the STB set to the TV's native res, all format conversion occurs in the STB. Set to 'pass thru' all conversion will be in the TV. Anything else will end up multiply converted, with loss of PQ.

leshabitants24
05-15-2005, 03:57 AM
With the STB set to the TV's native res, all format conversion occurs in the STB. Set to 'pass thru' all conversion will be in the TV. Anything else will end up multiply converted, with loss of PQ.
i cannot find a 'pass thru' setting on my stb.

petej
05-15-2005, 09:41 AM
What you are describing is usually called 'pass thru mode'... it's not as common as it should be... the 1080p/60 TVs will want it...

Interesting point. My Comcast box does not have pass thru. Must be set for 1080i, 720p, or 480p. I'm assuming I would just pick one llike 1080i and hope it worked with a 1080p tv.

That begs another question: Are the 1080p boxes coming out soon by Samsung, jvc, etc able to handle 1080p/60 fps or will their circuitry just handle the atsc standard max of 1080//30 frames per second?

RSawdey
05-15-2005, 10:09 AM
The new displays DO handle 60 fps, which is why they do such a good job of upconverting 480p/60 & 720p/60...

Hopefully, firmware upgrades will add 'pass thru mode' to our STBs... since using integrated digital tuners is essentially 'pass thru', I think it's one of the main reasons many people find the quality of images from internal tuner to be better than with external STBs.

The issue isn't 'will 1080i work' (all formats will) but how to avoid MULTIPLE conversions... and 'pass thru' will allow the advanced converters to do the best job possible in one conversion. Setting ANY single res (none of them 1080p/60) will cause all other formats to be converted twice.