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11-05-2005, 11:35 AM
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HDTVoice Member
Join Date: Nov 2005
Location: tucson
Posts: 1
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Westinghouse LVM-37W1...1920 x 540?
I have a Westinghouse LVM-37W1 and have my comcast HDTV box set to 1080i output. When I go to my TV menu to check the display resolution it says 1920 x 540, not 1920 x 1080 which is supposed to be the native resolution of the monitor. Does anyone know what 1920 x 540 is?
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11-05-2005, 01:18 PM
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#2 |
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Runner/Cyclist/X-C Skier
 
Join Date: May 2002
Location: Toronto
Posts: 17,068
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The native resolution is as you stated, which means that it actually displays in 1080P. I'm not sure why it would "say" 540. I wonder whether an incoming 1080i signal is converted to 540P before final conversion to 1080P on your TV? Or whether the TV simply says 540 for any incoming 1080i signal.
Is there anything in the operating manual about what this "display resolotion" means?
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57U - Toronto, Rogers Cable, SA8300HD, 500GB HDD & Hitachi 61UWX10B HDTV, Yamaha RX-V1 A/V Receiver, Martin Logan Speakers. Photos --> 57U's HT SA8300HD, 250GB HDD & KDL40W3000 (Upstairs) Please don't PM me with questions that can (and should) be asked in the forum, thanks. Personal Question? Fire away. |
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12-10-2005, 04:01 PM
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#3 | |
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HDTVoice Member
Join Date: Dec 2005
Location: Tampa
Posts: 1
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Quote:
I have this same question...I am using a DirecTV HD-DVR set at 1080i, however, the LCD reports 1920x540 Would it be better to send it 720P? |
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12-11-2005, 09:27 PM
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#4 |
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Lets's try this button...
 
Join Date: Jul 2005
Location: Philadelphia
Posts: 55
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 Are you using a Component, HDMI or DVI connection to the monitor?I had some initial confusion when setting up an upscaling DVD player on my 32" Westy. After playing around with different output options on the player and connections to the monitor, I eventually got the 1280x720 resolution I was looking for.
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12-22-2005, 10:40 PM
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#5 |
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HDTVoice Member
Join Date: Jan 2005
Location: Hawaii
Posts: 2
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Isn't this because 1080i is interlaced video. Therefore, to get the 1080 pixels of vertical resolution, the tv is doing two passes of 540. In interlaced video, there is a top field and bottom field. To form the image, the fields are drawn alternating at 60hz, but what the eye really sees is a complete frame at 30hz. I'm really no expert at this, but I would guess that means that when watching 1080i, you are actually getting less vertical resolution than 720p, as 720p shows the entire 720 pixels of vertical resolution at 60hz. Thinking about it this way, I'm not entirely sure what the advantages of watching anything in 1080i would be.
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12-23-2005, 10:19 AM
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#6 |
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Runner/Cyclist/X-C Skier
Join Date: May 2002
Location: Toronto
Posts: 17,068
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1080i actually has more resolution than 720P because the eye merges the two fields together. Viewing 1080i vs 720P on the same material usually provides a sharper picture in 1080i. 720P is often better for sports or fast action scenes and requires less bandwidth.
There are several threads on 720P vs 1080i if you wish to search for those two terms in the title... We are all aware of this, what makes no sense is the fact that the TV should be showing the incoming signal, which is 1080i. BTW, many HDTVs take a 720P signal and "strip" the lines down to 540P before conversion to 1080i, so an incoming 720P signal can be inferior. This doesn't happen to 1080i, which is simply displayed on those HDTVs that display 1080i natively (CRT-based HDTVs)
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57U - Toronto, Rogers Cable, SA8300HD, 500GB HDD & Hitachi 61UWX10B HDTV, Yamaha RX-V1 A/V Receiver, Martin Logan Speakers. Photos --> 57U's HT SA8300HD, 250GB HDD & KDL40W3000 (Upstairs) Please don't PM me with questions that can (and should) be asked in the forum, thanks. Personal Question? Fire away. Last edited by 57U : 12-23-2005 at 10:22 AM. |
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