HD Guru Basics: About HDTV Resolution

November 25th, 2006 · 39 Comments · Reference Materials

Resolution is one of the most misunderstood HDTV topics. Here are the basics.

Item 1- Resolution: One Term, Two Meanings

When you see the term “HDTV resolution” it will be referring to one of two types: Broadcast resolution or a display’s “native resolution”.

Item 2 -Broadcast Resolution

The two high definition resolutions being broadcast today are 720p and 1080i. All high definition sets can accept both types of signals. The resolution you will actually see displayed on the TV screen is covered under “native resolution” in section 4.

720p and1080i Defined

2A- 720p
720p is a standard defined as producing a high definition image with 1280 picture elements (pixels) horizontally and 720 lines (also can be called pixels) measured vertically. The “p” means progressive. Progressive is defined as a complete frame (think of it like a frame of motion picture film) being sent to the display every sixtieth of second. This means you see new frames sixty times per second. This resolution is commonly written as 720p (60) or 720 60p. They all mean the same. The aspect ratio or proportion of a 720p image is 16 x9, also called widescreen.

2B- 1080i 1080i is the standard defined as producing and image with 1920 picture elements (pixels) horizontally and 1080 lines (pixels) measured vertically in the 16:9 aspect ratio. The “i” means interlaced. You see new frames 30 times per second.

To explain interlace, imagine a sheet of paper 16 inches long and 9 inches wide, with a still image of the sea shore printed on it. Inserting this piece of paper in a shredder it cut the paper into 1080 strips (but intact). Each strip is 1 to 1080 starting at the top of the paper. With the sheet fully numbered sliding just the 540 even numbered strips of paper to the right and leaving the 540 odd numbered ones intact would result in having two sets of strips of the seashore image side by side, each set one containing exactly one half of the picture information.

This is what interlacing does. All the odd number lines of resolution making up the image are transmitted sequentially, the first set of odd lines in 1/60 of a second. This is called field one. The next is the even numbered ones transmitted as field two. The two fields are combined by the TV inserting the even field lines of image between the lines of the odd numbered image information from field one. The result; a complete image seen every 1/30th of a second. (1/60th of a second odd lines + 1/60th of a second even numbered = new image ever 1/30th of a second). A complete image is called a frame (as in a frame of movie film). 1080i is sometimes written as 1080i30 (for 30 frames per second) and sometimes written as 1080i 60 (for sixty fields a second) they both mean the same. It is highest resolution broadcast standard.

Item 3 –HDTVs Displays: Two separate groups Interlaced and Progressive

3A- The interlaced group is made up of HDTVs are made up of

a) CRT direct view televisions (also called a picture tube TV, they are made in 16:9 widescreen and old style 4:3 screen aspect ratios);

b) CRT rear projection, which use three picture tubes (red, blue and green) to form a full color projected 1080i interlaced image. Unlike digital TVs (see below) CRTs can change their scan rate to match 480i broadcast and change again to match a 1080i broadcast signal. This multiscan ability is unique to CRT technology.

c) The 42” plasma TVs made by Hitachi (they’re called AliS) are the only other interlaced HDTVs.

3B -All other TVs produce progressive images placing a new complete frame on the screen every 1/60th of a second. This group is made up of three types:

a) LCD flat panels,

b) Plasma (except the aforementioned Hitachi),

c) Microdisplay projectors (DLP, LCoS and LCD),

Iem 4- Native Resolution

The term native resolution means the resolution that a given TV produces. All CRT displays are “analog” They scan an electron beam across the face of the tube.

Direct view CRT HDTVs range from 800 to about 1000 pixels resolution across. The vertical resolution of direct view HDTVs when fed a high definition signal is always 1080 lines. Most direct view CRT HDTVs can also produce vertical resolution of 480 lines when fed a standard definition (480i) signal.

CRT rear projectors range from about 800 to around 1200 pixels resolution across. All CRT rear projectors HD vertical resolution is 1080. CRT rear projectors can also change their “scan rate” to produce a standard definition vertical resolution of 480 lines

All Progressive displays are “digital” and all digital displays (except the interlaced 42” Hitachi above) are progressive. Digital displays are microdisplay projection, flat panel LCD and all Plasma. All digital display devices have a fixed vertical and horizontal resolution. To be called a High definition display, it must have at least 720 pixels (lines) of native vertical resolution.

The most common HD “native matrix” resolutions for digital displays are 1280 x 720, 1024 x 768, (1365) or 1366 x768 and 1920 x 1080. There is no standard and there are sets on the market that have native resolutions of 1024 x 1080, 1280 x 768 and other matrixes.

Item 5- Getting Broadcast Resolution and Rate to Match a Display

If a broadcast signal doesn’t match the native resolution of a display it must be processed and converted to match. Uniquely, as previously stated, CRTs based devices can adjust their scan rate to 480i for native standard definition signals requiring no scaling conversion. This is why people say that standard definition looks best on a CRT. No conversion means there are conversion artifacts that degrade the image. However, all current CRT projectors and direct views must perform conversion to turn 720p broadcasts signal into 1080i for display.

All digital HDTV displays must convert broadcast signals to match the display’s native resolution. All sets require a chip called a scaler that is used to do the conversion. Scalers (also called signal processors) are dedicated computing chips that use complex mathematical computations to make adjustments for motion and other factors. All digital displays (except the Hitachi 42”) must also convert interlaced signals (480i/1080i) into progressive signals.

As a rule of thumb, many (but not all) inexpensive non-brand name televisions as well as a number of name brand sets use poor scalers to save money. The HD Guru has been evaluating HDTV internal deinterlacer and scaler performance. You can find his latest tests at hometheatermag.com and soon within the blog.

Item 6 – Wrap up
CRTs produced the best standard definition image because they do not need to convert standard definition interlaced signals into progressive high definition for display*. All digital displays must convert standard (480i) definition and all 1080i signals into progressive (called deinterlacing) as well as up/down convert broadcast signals to match the native resolution of the display**. This conversion is called scaling.

Item 7 – The Bottom line Unlike what is written in many of the store advertisements, not all HDTV have 720p or 1080p resolutions. Resolution is just one factor in determining which HDTV to purchase. Viewing distance goes hand and hand with screen resolution, if you are too far from a display your eyes will not be able to resolve all of the screen resolution. Check out my HDTV Viewing Chart to find the right screen size for your viewing distance.
*(Except 42” Hitachi plasma)
** There are a number of HDTVs with native 1280×720 resolution. These native 720p HDTVs still must scale 720p broadcasts to make the image larger (called overscan). Overscan is employed to prevent artifacts from being seen at the edge of the display

Copyright 2006 HD Guru all rights reserved

Tags:

39 Comments so far ↓

  • jarrod

    thank you mike!!!! i would have never found that Closed Caption Setting on the Hd Dvr Box!!!!

  • Mike D.

    I have a comcast DVR box set to 1080i, 16×9. My TV is A Sharp Aquos LC 42D62U, 1080P. What happens to a 720P broadcast,ESPN i.e, as it comes out of my DVR then goes into the TV? I am of the understanding that my box deinterlaces the 720p to 1080i then my TV converts it to 1080P it’s native resolution. Would I be better off changing the output of my DVR to 720P then the TV would simply upconvert it to 1080P? Am I losing anything with it set to 1080i being that the box converts it then the Tv coverts it Again? Thanks

  • Dan Richard

    Hello and happy 4th. I recently purchased a Samsung 50 inch 720 DLP. Also I have a directv hd receiver that can get 720 and 1080. Here is where I am mixed up, is it ok to watch my 720p set using the 1080p signal? Hope to hear from you. Thanks again.

    Yes its OK, though the DirecTV signals are either 720p or 1080i not 1080p. If the box does not have a WYSIWYG setting (what you see is what you get, i.e. 720p channels are output @720p and 1080i HD channels are output @1080i), I would recommend setting the output @1080i and let the TV downconvert the signals to the TVs native rate of 720p.

    The HD Guru 

  • chris

    I have a sony 55″ and like to watch Discovery HD through a cable box. Whenever I do, the picture is always bigger than the screen. In other words part of the picture gets cut off. I know this because I will only see part of the Discovery watermark logo in the bottom corner or text put on the screen is cut off when it is at the edge. How do I fix this? Thanks.

    You don’t mention which 55″ you have (CRT rear projector or microdisplay LCD/SXRD?) First check the aspect ratio settings on the TV (it should be set to “full) and the cablebox (should be set to 16:9) if not change it. If both are set correctly, and it is a CRT rear projector a “qualified” techicnician or ISF calibrated to reduce the overscan and redo geometry and reconverge the display, though it will cost you money (my guess is at least $200 probably more, its is very time consuming to perform). If it is a microdisplay you are out of luck.

    The HD Guru   

  • Jim

    I just purchased a 65″ Mitsubishi DLP. I am very happy with the TV with one exception. When I watch HD live sports, for example, their seems to a lot of digital noise (pixlation problems). This mainly happens as the camera moves around. When the image is still, the clarity is perfectly fine. Having said that, I have watched other HD shows which do not have this problem. What is causing the pixlation problem? Can HD signals be transmitted differently from one channel to another?
    Thanks!

    Yes. You do not mention if you are receiving HD via cable, satellite or over-the-air.  If it is one of the first two you may be seeing pixelization caused by the lower bit rate that many cable companies and both satellite providers use. Over the air or Verizon Fios are the only way I know of assuring you are seeing every digital bitl the station is broadcasting.

    The HD Guru 

  • Doug

    I am thinking about purchasing a Hitachi 55″ Plasma, The price seems to be right, $2300, but should I wait for the next model? I know that thought can be an endless cycle, but I am partial to all black frames. I would also love to have a plasma in this size without speakers.

  • Bill HDRocks

    I just wanted to know about resolution, the signal is 1080i by 1920 when i push for information, and in my book for the tv it says component 1, 1080i also component 2 is 1080i, but no plasma accepts it accept hitachi has true native resolution of 1080i but every other plasma has what in native 768. Also if native cant’ be changed then if you get a 720p signal what happens does it mesh it into more lines to achieve the 720p picture. Since you can’t physically change your pixel count.
    Also if you do have the hatachi is it possible to change the chip or the software or both, to produce 1080p. Just wondering but i am sure the wouldnt ever do that but is that really the difference as far as i and p in the processing of it.

    HDTVs “scale” the image by interpolating the source signal to the native resolution of the display. I.E a 1280 x 720 signal gets upconverted to fill 1366 x 768 display. 

    Hitachi 1080i plasma can only display as 1080i (it can not be changed). The advantage: they don’t need to scale in vertically because they display 1080i exactly line for line. They only scale in the horizontal plan (1920>1024).

    The HD Guru 

  • Jim

    guru,
    I am waiting for my 5070hd pioneer to get here, since it passes all the 3:2 test what should I look for in a dvd player to ge the best picture, I understand it should have HDMI but where do I go from there. any idea’s

    Thanks

    Any HDMI connected player should do a fine job and there are many to choose from. For something really special I suggest the new Toshiba HD XA2 HD DVD player. Its pricey,($999 retail) but it includes the Silicon Optix HQV processor, which to date does the best job of scaling of any processor I have tested. I will be posting a review of this HD DVD player soon (sample is supposed to arrive today)

    The HD Guru

  • Jason

    guru,
    I have a hisense 32″ lcd model # lhd3206us. I just recently got comcast HDTV, and I love it. But comcast doesn’t have a 4 digit code so that I can operate my tv from the comcast remote, do you know where I can find this information? Thank you for your help.

    Many “tier three” brands (as opposed to the big name brands) do not have their codes within the cable provider’s remote. Check with Comcast and see if they have an updated remote with your Hisense codes built-in. Its a longshot but it can’t hurt.

    The HD Guru

  • Larry Stuart

    I have an understanding that 1080p is the highest resolution on the market. I have a 1080p Sony Grand Wega SXRD 50″ LCOS that is awesome. A friend of mine is in the market now, and says he was told that 1080i has higher resolution than 1080p. The more I read up on this, the more I see circular logic, and no comparison between the two. Please help . . .
    Larry Stuart

    1080i and 1080p have the same resolution (1920 x 1080). Using a 1080p display a 1080i signal is converted (called deinterlacing) to progressive. All LCDs and most plasmas are progressive. Both look terrific.

    The HD Guru

  • A. Khani

    I did buy the JVC LT-40FN97, and I was simply amazed by the picture quality. My question is, although the panel is supposed to be 1080p Native, I have not been able to select that resolution so far; is something wrong with it? I realize that the cable broadcast is no higher than 1080i -and probably won’t be for years to come. I hooked up my PS3 to it, but when I was asked to select the Maximum resolution available on my display, everytime I checked the 1080p box, the screen would go black with a message that this resolution is not supported. I set the maximum to 1080i and it works fine both for blu-ray and games. How can I prove that I even have 1080p if I can never select it? I have games that are 1080p and I was hoping to actually experience them in their full “glory”. Am I doing something wrong, HDGuru? Your help is appreciated.

  • A. Khani

    Thank you so much. You have just saved me $600 with your quick reply. I almost bought the Sony just for that reason. Again, Thanks for the help.

  • A. Khani

    I am at loss between buying the JVC LT-40FN97 rated top at CR, and the Sony KDL-40XBR2.
    I had leaned towards the JVC, but was discouraged when I read on CNet that the JVC does not “accept” 1080p while the Sony does. So does that mean my blu-ray dvd will look better on the Sony? Please help me decide..Thanks

    The JVC TVs properly deinterlace 1080i signals and properly handle 3:2 film cadence.  Simply stated it will convert 1080i film based content (movies) into 1080p, and provide the same result as if it accepted 1080p. I would not be concerned with this issue.

    The HD Guru 

  • johnny b.

    hi guru,

    can you comment at all on the Toshiba 42HL196 LCD set? i’ve seen some posts on other sites mentioning problems with “ghost bars” on both sides of the display.

    thanks very much.

    JB.

    ———————————————————————————–

    The HD Guru has not seen this on the Toshiba, but if it is on some sets it is an defect. The HD Guru recommends checking out a TV just after connection. The best way is with a gray full screen and SMPTE color bars. It will take a long article to explain how to interpet all the test, however a simple one is to use a test DVD such as AVIA or Video Essentials to put a full screen all white and all gray pattern on the screen (this is called a raster pattern). If the all white or gray screen has lines, bars, uneven color, or other anamolies you can’t live with, the set is probably defective or a bad design (see my worst sets article for examples). Return or exchange the set for another sample. If the second one also has a problem that you can’t accept find another model. Do this during the store’s return period to avoid any greif. 

    The HD Guru 

  • Marty

    I have a Panasonic plasma tv hooked up to both a HD cable box and also my regular outdoor mounted tv antenna. I am running the sound from both through a A/V receiver. Regarding digital optical audio v. coaxial digital audio, is one better performing than the other? Also, why does the volume of the sound change so dramatically between stations, and even between commercials and programs on the same station? Finally, why would the sound be good in two channel stereo mode, but sound fuzzy in the various dolby modes?

    I don’t know if these are issues you can respond to. If not can you suggest something to get me headed in the right direction. Thank you.

    ——————————————————————————————–

    You have touched on a topic that maddens me. There is currently NO range standard for DTV audio levels (I believe their is just a maximum) The sound levels are all over the map. NBC is the worst offender ,  its levels are many deciblels (my guess around 7db, I have not measured) below my other local stations. Some commercials are highly compressed towards the peak levels on many stations.

    Some TVs have circuits that can even the sound levels  and some work better than others, consult your HDTV’s owner’s manual.

    As for why the Dolby surround sounds fuzzy to you, there could be many reasons. Have you calibrated your surround sound (SS)settings within your SS receiver or home theater in the box? If it is not set up properly for delay settings and volume balanced for front, center and rear the sound will get muddy. Consult your sound systems owner’s manual for more information.  

    I recommend a Radio Shack (analog, the one with a needle) meter to set sound pressure the levels properly.

    The HD Guru 

     

     

  • Erik

    I don’t understand. it says in the manual 1080i. Please explain or direct me to more info.

  • Erik

    You gave examples of 1080i TV’s, however my Samsung HLN 617W DLP has a 1080i Res. Can you expalin this.

    —————————————————————————————————–

    All DLP projectors are progressive (P) . Your Samsung DLP produces a 720p image (1280 x 720) not 1080i

    The HD Guru 

     

  • Nick

    About Walt’s earlier comment, I am in the same situation and I was thinking about buying the same model Sony Bravia as Walt. Since you say the samsung’s are better, could you give me a reccomendation of a model for 40″?
    Thanks
    Nick

    ————————————————————————————————

     I wrote Samsung uses the same top quality LCD  panel (in select models like its 96 series)  Its 96  model series HDTVs also  have more feaures than the Sony XBRs. Check the Samsung website for all 96 series models.

    The HD Guru

  • Walt

    Thanks Guru for the quick reply.
    Walt

  • Walt

    What are your thoughts on the Sony Bravia KDL-40XBR2. I did not see any Sony in you top ten picks. This 1080P is on sale at Circuit City for $2599.99 or the KDL-46XBR2 at $3419.99. Looking to buy for Xmas what do you think about Sony????
    Thanks
    Walt

    ——————————————————————————

    The Sony uses the same wide viewing angle LCD panels (in these models) as the top-of-the-line Samsungs (the panels are made in the same factory). It is called SPVA. In my opinion ,these are the best panels in this size range available today.

      I chose the Samsung  over  the Sony XBRs because it has more useful features including CableCARD and IEEE1394. In terms of panel performance, they are equal.

    The HD Guru 

     

  • Bruce

    I think you have a quickly increasing following! I check your site regularly for updates. I am still somewhat confused by 720P and 1080i and what will work best at a viewing distance of 8′-9′. I’m leaning towards the Pioneer PRO-940HD, but I wonder if that’s too small at the distance or would a 46″ LCD or 50″ plasma do the trick. Throw into the mix the 42″ 1080i Hitachi and I’m dizzy. I’ve read that 1080i for standard broadcasts will not look nearly as good as with a 720P. Kindly comment on the Pioneer size v. viewing distance as well as any issues on standard broadcasts on 1080i.

    Thanks so much!
    Bruce

  • Joel

    Does anyone know the remote code for the Haundai 37″ 370 E HDTV. I am using a HD Box, Scientific America supplied by the cable company. Supposely the remote can learn the code but none work to turn on the TV.
    Thanks.

  • jorge z

    I have a hdtv proton whenever i play dvd I GET the wide screen version if I try to zoom to a larger image i get a blue square about 2 in. square any ideas. thank you.

  • Ron Braun

    Purchased a Sony 55″ Full HD 1080. Used HDMI cable to connect from TV to cable box. Had multiple problems even after two visits by cable provider technician. Eventually called Sony and was told the HDMI cable is not compatible with the cable box, even though there is an HDMI output on the cable box. They suggested using a component video cable instead of the HDMI cable. My question is: Does the HDMI cable provide a better picture resolution vs. using a component video cable?

    ——————————————————————————————————

    In a perfect world there should be no difference between component video and HDMI outputs and inputs. However, in the real world this is often not the case. The real question is what is at fault here? The HDMI cable, the cable box or HDTV. The only way to know is to test each one. If you have a friend with a working HDMI source i.e. HD DVD player, Blu-ray player, upconverting DVD player see if you get a picture on your set with your cable . If yes, it is very likely the cable box is defective, or not properly set for HDMI output.

    The HD GURU 

     

     

      

  • Rob

    Thank you, HDGURU, for a very informative website and Q&As. I enjoy reading it.

    I have a question on the HD reception. Why do I get bars (top & bottom) on my Panasonic Plasma HDTV(TH-42PX60U) when I am watching HD channels (like PBS shows and Discovery HD channel). Even when I play DVD I have bars at the top & bottom? Is this a transmission issue or do I need to do some changes with my HDTV setting. I am using a TWC HD cable box with HDMI connection.

    Thank you.

    Rob

    ————————————————————————————————————-

    If you are getting black bars on all your HD programs, you have the aspect control and/or the output set wrong on the TV, source box or possibly both.

    Plasma should be in “full” aspect mode (button is on the remote)

    The source boxes should be set for 16:9 and make sure the cablebox is set to output 1080i or native.

    If only a few programs are “letterboxed” (black bars) the content is in a wider aspect than 16:9 such as 2:35 to 1 .

    The HD Guru 

     

     

  • Marvin

    The December Consumer Reports gave its top LCD rating to the JVC LT40FN97 which is a 1080p display. Yet it is slightly behind the curve because it does not directly accept a 1080p signal.

    Practically, you still have the same resolution at 1080/30 instead of 1080/60. How much disadvantage is this?

     

    ————————————————————————————————————

    JVC is one of number of manufacturers that claim to properly deinterlace 1080i source material and JVC the HDTVs tested to date pass the test. They also passed the 1080i 3:2 pulldown test for 24fps native material. Asssuming this untested LCD passes too, (as I expect) there should be no difference between 1080i/30  and  a native 1080p source.

    The HD Guru 

     

     

  • mic

    Glad to see the site up and running…

    I bought a Phillips 50″ ambilight plasma, 1366×768. I will or will not see a difference in setting my HDTV cable resolution to 720P or 1080i? I haven’t noticed much difference at all. But are there some minor details I might look for?

  • jeff

    i have a sony grand wega 70 inche lcd.was wondering if its a good set and anything i could do to get the best picture from it like fine tuning i could do myself.also got the sony stra-da7100es reciever and also have the cd/dvd player sony dvp-ns9100es was wondering if what i got is good and anything i can do myself to fine tune.thank you

  • Brian

    I find one big misconception
    In printed Contrast specs Company “A” lists a
    Dynamic Contrast of 4000:1 while company “B” uses the ANSI static Contrast ratio and shows 1300:1

    I often refer to this fact when people say get the Sammy it has 4000:1 contrast when in fact 4000:1 Dynamic isn’t any better than 1300:1 ANSI I also note that the Dynamic is more of a marketing tool

    can you touch bases on this subject

    Thanks

  • Coop

    I have an insignia and it seems to have a good clear picture like other LCD’s. Maybe not as good as some of best but it still has a good HD picture. Is it all of the Insignia’s or just some?

  • Mike RE: HARRY

    harry I am a contractor for Comcast. I am an installer. With the HD and Duel Tuner DVR you can turn on the CC (closed caption). with the box powered off, just push the “Menu” button. A screen will pop up. Press down until you get to Closed Caption. Press the right arrow 1 time and this will unhide the selections bellow. You can change them as needed. You may need to power the box off and within a couple min. push the power button. I hope this will help you.

  • Coop

    I am wondering what you mean by non-brand name sets?
    What are some examples of some?

    ————————————————————-

     Insignia, eyefi and hisense are examples of no name or non brand name sets. The TV industry refers to them as “Tier 3″ 

  • Morris Tate

    I have a 42″ Hitachi Plasma and love it. My question/problem is the broadcasters. I get a lot of pillared HD broadcasts rather than 16:9. Seems bigger thna 4:3 but black pillars on both sides. What are they broadcasting?? Even some sports programming that is supposedly HD is pillared!

  • Kevin

    I have a Toshiba 62MX195 and was thinking about getting either an HD DVD or Blu Ray DVD but I understand that this HDTV does not accept 1080p signals. They call it a high-definition 1080p rear projection DLP TV.

    Am I wasting my money getting the Blu Ray since this puts out an 1080p signal? Should I just consider the HD DVD from Toshiba? My Onkyo does not have an HDMI connection so should I consider upgrading to the Yamaha RX-V2700? If I upgrade to the Yamaha, what would be a good match for the speakers?

    Thanks for your help,
    Kevin

  • Marvin

    Dear Gu,

    You stated the Hitachi 42inch is the only flat panel interlaced panel available. Does it have any advantages or disadvantages? What are they?

    Thanks,
    Marvin

    ———————————————————————————————–

    The 42″ Hitachi ALiS panels have a native resolution of 1024 x 1080 placing 1,105,920 active pixels on the screen . All the other 42 inch panels have a resolution of 1024 x 768 delivering  786,432. The Hitachi has the highest resolution of any 42″ plasma (by over 40%)

    As an interlaced panel the Hitachi does not need to deinterlace the image as all other plasmas, LCDs and microdisplay rear projection do. As a result there aren’t the problems assoicated with bad deinterlacing , such as only showing 1/2 of the resolution (540 vs 1080 lines) each frame occuring every 1/60 of a second. I doesn’t need the motion compensation that deinterlacers require when displaying native video source content ( its shot @ 30fps)  .  Basically it puts all 1080 horizontall lines (measured vertically) without scaling and the associated artifacts of scaling and poor motion compensation (see my 61 HDTV test in home theater for more on this) . It does do horzontal scaling of 1920 pixels to 1024.

    Disadvantages, some people feel a progressive display is appears “smoother” more consistant in level,  because it puts up a new frame every 1/60 of a second vs 1/2 the information every 1/60 and a complete frame every 1/30 of second. That you need to see for yourself (I do not notice any more smoothness)

    All in all this is why it is my top 42″ plasma choice, great picture with 40% higher rez , native vertical resolution and no deinterlacing artifacts of video

    The HD Guru

     

     

     

  • Harry

    I recently installed HD service from Comcast only to find out that the signals from all networks and cable sites do not have closed captions embedded. Since my wife is severely hearing impaired and relies totally on captioning, this was a deal breaker. I cancelled the service the next day. Do you know if this is in fact the case and, if so, when this will change to benefit the hearing impaired? Please advise.

     

    ————————————————————————————————————

    Closed captioning for digital equiptment and broadcasts has been required since 2002 according to the FCC website at

    http://www.fcc.gov/cgb/consumerfacts/closedcaption.html

    Perhaps the person you spoke to at Comcast was not familier with the operation of their equipment. May I suggest calling back Comcast customer service and ask for someone that is familier with the operation of closed captioning using their digital leased cable boxes. The FCC web page page I listed contains the procedure on how to file a complaint with the FCC regarding closed captioning if you can not get Comcast to assist you.

    The HD Guru

     

     

     

     

     

  • Marvin

    Guru,
    Appreciate your site and work. I’m always looking for another qualified, unbiased opinion for help in making a purchase.

    I was hoping to purchase a 42″ flat panel this season and tried the Hitachi 42HDX62 in my home for 5 days. I was somewhat disappointed with it, 98 pounds, not as sharp on some broadcasts as I had imagined. More time and picture adjustments would have helped, I’m sure. The HDX62 is last year’s model. This year’s models are lighter weight, but how do they compare performance-wise?

    I view in a finished basement family room about 12 feet from the screen. At that distance will a 1080p LCD be wasted resolution? (they look soooo sharp in the stores)

    Should I buy 720/1080i plasma or 1080p LCD now or wait another year?

    Thanks,
    Marvin

  • DJ

    I have a Pioneer PRO-1130HD with Comcast Cable. We are utilizing the Comcast cable box for our tuner and DVR capibilities. My question is, how should I have the cable box set-up for resolution to get the best out of the TV? I have it set for 720p. Is that correct, or should I change the cable box to 1080i?

    Thanks,

    DJ

  • Christine

    Explain the difference between a lcd, plasma etc.. . Could you tell me the difference. I am planing on buying a HDTV and I have my eye on the 62″ panasonic but I also watch a lot of tv and I heard that if that was the case you should not purchase a plasma tv because once the gas on the inside runs out you are out of a tv.
    Thank you,
    Christine

    I will be posting my plasma and lcd pros and con on Sunday nov 26.  It states the myth about gas leaking is completely false. Plasmas are sealed at the factory.  The blog post should answer all your questions.

    The HD Guru

Leave a Comment