rosh400
12-26-06, 07:35 AM
I've recoreded the INHD calibration patterns on my DVR but have a question about their use. The narrator says that you should turn off all color except blue or use a blue filter (which I have) but then proceeds to provide instructions if you are not using a filter or turning off colors. I used the filter and followed the instructions for getgray by adjusting color until white and blue and white matched but that resulted in my color setting being way to high so that can't be right. Does anybody know how to set this or should I try calling INHD to see if I can get more info?
toenail
12-29-06, 07:24 AM
Over saturation result may be from an inaccurate color decoder in your TV or the fact that the concentric circle pattern INHD uses makes it very difficult to compare white and blue given their location in the pattern. If saturation looks too high, turn it down until you are happy with the result.
rosh400
01-05-07, 01:24 PM
Any other advice or thoughts?
davehancock
01-06-07, 03:36 PM
In general, I don't think much of the instructions that INHD gives for their tune-up. I don't have any problem with the concentric circle patterns - but you really do need a blue filter or the ability to display only blue to make them work.
rosh400
01-09-07, 01:58 PM
In general, I don't think much of the instructions that INHD gives for their tune-up. I don't have any problem with the concentric circle patterns - but you really do need a blue filter or the ability to display only blue to make them work.
I have a blue filter. The voice over instructions only address users who don't. How should I use these concentric circles with the blue filter? Thanks in advance for your input.
davehancock
01-09-07, 07:24 PM
I have a blue filter. The voice over instructions only address users who don't. How should I use these concentric circles with the blue filter? Thanks in advance for your input.Sorry to be slow to respond - this site being clogged up has made it difficult to respond.
I've attached an image of what the INHD color circle test pattern should look like thru a blue filter (or with Red & Green turned off). Adjust the tint (or hue) and color controls so that the middle bar colors match that of the circles as closely as possible.
rosh400
01-09-07, 08:47 PM
Thanks. That's exactly what I needed.
Feirstein
01-09-07, 09:14 PM
I see the same issue with my Sony 60A-2000. Use your eyes as the best and final judge. Their pattern is good for tint but provides too much saturation for color. I have never seen this before.
Richard.
Daryl L
01-10-07, 12:00 PM
Is InHD's color/ pattern at 100% or 75% amplitude. Looks like 100% to me. Isn't it better to calibrate using a 75% pattern? I'm not complainin cause I use it myself. Better than HDNets color bars pattern.
krasmuzik
01-10-07, 04:39 PM
There is always the possibility that the station broadcast of test patterns is wrong. I noticed the same thing when recording it to the PVR - there is no way it was correct for any of the SD/HD channels - I had to turn color way down from what the pattern resulted to avoid sunburnt faces. Sure each station is likely different - but overall it seemed color was too high.
The only reason for 100% vs. 75% is that some color decoders can become unbalanced. For example DLP with BrilliantColor will goose the bright colors - so you need both patterns to make the tradeoff of dim vs. bright colors being balanced. I don't think terrestial OTA allows 100% broadcasts - should not be a problem with digital though.
davehancock
01-10-07, 04:51 PM
There is always the possibility that the station broadcast of test patterns is wrong. I noticed the same thing when recording it to the PVR - there is no way it was correct for any of the SD/HD channels - I had to turn color way down from what the pattern resulted to avoid sunburnt faces. Sure each station is likely different - but overall it seemed color was too high.
The only reason for 100% vs. 75% is that some color decoders can become unbalanced. For example DLP with BrilliantColor will goose the bright colors - so you need both patterns to make the tradeoff of dim vs. bright colors being balanced. I don't think terrestial OTA allows 100% broadcasts - should not be a problem with digital though.
Well we are talking about INHD patterns (maybe you were referring to some other test patterns) and they are only carried on cable. As everything is digital from the source (meaning INHD's storage) through to the customer, I don't think that there is any opportuity to screw up the saturation levels (but the pattern could be screwed up to begin with). Also, being digital all the way should allow 100% to be used.
krasmuzik
01-10-07, 05:46 PM
No I was talking about INHD - digital does not mean the pattern is in calibration. No doubt there are still video controls that broadcast and recording engineers can screw with so it "looks right" - just like there are with DVD players and TV displays that are supposedly purely digital. You would think that would not be the case being that it is a test pattern- but following the pattern on my cable system made the rest of the shows on INHD clearly have too much color as well as the rest of the stations. This was over component - I tried the DVI output but it's output was shifted right about 10%. Display only had adjustments for analog timing because digital timing is not supposed to have that problem even though it did. The HDMI compatible output was giving me copy protection screens if I tried to use YCbCr rather than RGB. So I do not put too much stock in the video processing in the settop box - maybe the pattern is right - but the box is the one screwing it up. This is the older Motorola Comcast box with DVI out - I do have the newer one with HDMI out I should compare it against my video generator based settings.
Maybe someone has hacked their PVR and can get the digital data on the PC and look at it - but if the fault lies in the boxes video decoder will not tell you anything - would be a start though.