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danOO00
Joined: 22 May 2007
Posts: 70
Location: Putnam County, NY
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| Posted: Wed Jan 16, 2008 9:08 pm Post subject: Digital signal path? |
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I am planning on getting a PS3 for blu-ray movies and gaming on my NEC PG and Sony CRT RPTV.
I could use the component output for the PS3, and Cable STB, but am considering going HDMI using a monoprice 4x2 HDMI switch and an HDFury. This combination will be connected to the RTC2200 that I currently use for the PG.
I want to use 1080i 60Hz resolution for all sources except for the HTPC which now runs at at 1080i 72Hz for DVD upscaling, etc. I will switch the HTPC to 1080i 60Hz when going into the RPTV's DVI input.
Will the attached picture of the connections and cabling work? I would not use both outputs from the 4x2 switch at the same time since the RPTV is behind a roll down projector screen.
If anyone has experience with these 4x2 hdmi switches from monoprice please let me know how it worked out.
Thanks
http://www.curtpalme.com/forum/album_pic.php?pic_id=584
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Wed Jan 16, 2008 10:09 pm Post subject: |
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| Quote: | | The only problemI see is that your projector is a digital. |
Where do you see that Kal.
btw.- the picture won't open for me, I get a "Not Authorised" message.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Wed Jan 16, 2008 11:53 pm Post subject: |
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| Nashou66 wrote: | If your crt does 720p run that instead it is actually i higher res than 1080i, 1080i is like 540p.
Athanasios |
No, actually it's not. I don't know why that gets bandied about constantly.
1080i is actually the same spacial resolution as 1080p, it just has half the temporal resolution.
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Jan 17, 2008 12:18 am Post subject: |
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To expand on what Mark is saying -
1080i is the same resolution as 1080p, it's just drawn half a frame at a time, and thus 1080i uses half the bandwidth of 1080p. 1080i 60fps = 1080p 30fps in terms of bandwidth and resolution, just the presentation is different...
While 720p 60fps uses more bandwidth than 1080i 60fps, it's actually less resolution.
As a side note, since 1080i 60fps = 1080p 30fps, you can run 1080i and get the full resolution of all movies shot at 1080p 24fps.
My explanations might not be the most clear, but I'm sure Dave will come along shortly 
Last edited by CRT_Ben on Thu Jan 17, 2008 12:27 am; edited 1 time in total
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Thu Jan 17, 2008 12:26 am Post subject: |
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Umm, ahh Bandwidth and Scanrate are not the same thing. Bandwidth is measured in MHz, Scanrate in KHz.
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Jan 17, 2008 12:27 am Post subject: |
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| Mark_A_W wrote: | | Umm, ahh Bandwidth and Scanrate are not the same thing. Bandwidth is measured in MHz, Scanrate in KHz. |
agggg....long day at work. Edited
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Brian_AnnArbor
Joined: 18 Apr 2006
Posts: 36
Location: San Jose, CA
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| Posted: Thu Jan 17, 2008 2:34 am Post subject: |
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All I know is that 1080i looks better than 720p for me. less jaggies. (HD & Blu to Lumagen to Dwin)
and I must say I am impressed with 1080i @72Hz too.
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danOO00
Joined: 22 May 2007
Posts: 70
Location: Putnam County, NY
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| Posted: Thu Jan 17, 2008 4:04 am Post subject: |
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Thanks for all the replies guys.
No need to convince me to switch my resolution- this has been discussed to death in this forum, and I have found out for myself (with plenty of help from Mark and other's numerous posts on the subject) that 1080i looks best on this PG. I have compared to 720p which looks good too, just seems a touch softer to my eyes. 1080i is easier on the projector too-
Back to my original question about going PS3 HDMI->HDFury instead of component- .. is there a real PQ improvement for blu-ray and the HD STB? I already have the HTPC doing the DVD upscaling- so HDMI upscaling from the PS3 will not be critical- just a nice extra. Will the standard DVI-HDMI cables from monoprice work well? I am not sold on HDMI's superiority over analog -anyone with experience in this upgrade let me know your thoughts.
The pic is in my photo album in this forum if the link won't open in the original post.
Thanks again
Dan
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Brian_AnnArbor
Joined: 18 Apr 2006
Posts: 36
Location: San Jose, CA
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| Posted: Thu Jan 17, 2008 4:34 am Post subject: |
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There can be, yes. depends on how good the analog video out parts are. ( I have heard read that the PS3 is not so good)
Do keep in mind that you might have some left shift to deal with, but that should be easy enough to work past.
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Jan 17, 2008 3:59 pm Post subject: |
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| Nashou66 wrote: | Umm I still disagree. here is a good video to watch that explains it simply. Also on my Mitsubishi crt rear tv that is a 1080i set my calibrator Craig Rounds has my lumagen scaler set to 540p and i must say it looks better than 1080i. Even though the set dosn't have a setting for 540p it doesnt need it because it thinks 540p is 1080i which proves 1080i is the same as 540p.
http://www.youtube.com/watch?v=Z-JXfyvlPh0
Athanasios |
Sigh..
Sorry you disagree, but 540p60 is not equivalent to 1080i60. They're vastly different in terms of resolution and presentation (1080i60 is four times the resolution of 540p60 and is interlaced, not progressive). Please search on the countless interlaced vs. progressive threads that have been hashed out before, I don't have the time or energy to repeat it here.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Thu Jan 17, 2008 4:23 pm Post subject: |
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| Zebu Fellenz wrote: | | Quote: | | The only problemI see is that your projector is a digital. |
Where do you see that Kal.
btw.- the picture won't open for me, I get a "Not Authorised" message. |
The Visio symbol for "CRT Projector" has only one lens... It was Visio that the OP used to make their diagram.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Thu Jan 17, 2008 4:48 pm Post subject: |
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| CRT_Ben wrote: | | Nashou66 wrote: | Umm I still disagree. here is a good video to watch that explains it simply. Also on my Mitsubishi crt rear tv that is a 1080i set my calibrator Craig Rounds has my lumagen scaler set to 540p and i must say it looks better than 1080i. Even though the set dosn't have a setting for 540p it doesnt need it because it thinks 540p is 1080i which proves 1080i is the same as 540p.
http://www.youtube.com/watch?v=Z-JXfyvlPh0
Athanasios |
Sigh..
Sorry you disagree, but 540p60 is not equivalent to 1080i60. They're vastly different in terms of resolution and presentation (1080i60 is four times the resolution of 540p60 and is interlaced, not progressive). Please search on the countless interlaced vs. progressive threads that have been hashed out before, I don't have the time or energy to repeat it here. |
One correction Ben. When talking about vertical resolution, do not assume pixels are square. Horizontal resolution can vary independent of vertical resolution. The Lumagen can do 1920x540p and 1920x1080i. So, the resolution is most likely half, not one quarter.
_________________
Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Jan 17, 2008 4:51 pm Post subject: |
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| Person99 wrote: | | One correction Ben. When talking about vertical resolution, do not assume pixels are square. Horizontal resolution can vary independent of vertical resolution. The Lumagen can do 1920x540p and 1920x1080i. So, the resolution is most likely half, not one quarter. |
True - I was assuming square pixels and thus 540p in 16:9 format would be 960x540 pixels, which is 1/4 of 1920x1080. Either way, though, a nontrivial resolution deficit at 540p.
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