Originally posted by: gltaylor74
I don't think it is recombing. If the composite output was a recombination of the S-video, why would they have dedicated composite adjustments on the video board? If the composite can from the S-video, the S-video adjustment that is also present would be all that was needed. A dedicated composite adjustment wouldnt' be needed because it would have already been done on the S-video signal path. I'll email a laserdisc tech I know. He is the best in the business in the US. It is not Kurtis Bahr, but Duncan Hunter. Duncan has worked on my X9 and is well versed in ld theory and about the adjustments on the X9's video board. I had my X9 hooked to my pioneer elite HDTV when I first got it for testing purposes since the Elite HDTV has the same comb filter. The X9's comb filter settings had no effect on the picture as far as I could see and I tried using the HR, Normal, and C-wide modes under the Standard setting. This was running composite direct to the HDTV. I'm now using my X9 with an Iscan HD+ using S-video. I'll have to try hooking up the composite again and see if I notice anything.
I don't think it is recombing. If the composite output was a recombination of the S-video, why would they have dedicated composite adjustments on the video board? If the composite can from the S-video, the S-video adjustment that is also present would be all that was needed. A dedicated composite adjustment wouldnt' be needed because it would have already been done on the S-video signal path. I'll email a laserdisc tech I know. He is the best in the business in the US. It is not Kurtis Bahr, but Duncan Hunter. Duncan has worked on my X9 and is well versed in ld theory and about the adjustments on the X9's video board. I had my X9 hooked to my pioneer elite HDTV when I first got it for testing purposes since the Elite HDTV has the same comb filter. The X9's comb filter settings had no effect on the picture as far as I could see and I tried using the HR, Normal, and C-wide modes under the Standard setting. This was running composite direct to the HDTV. I'm now using my X9 with an Iscan HD+ using S-video. I'll have to try hooking up the composite again and see if I notice anything.
Well, I did just a test. I used memory 1 and put all settings on max and normal. And on memory 2 I put all settings on 0. Then I used the Die Harder LD and looked really close on my CRT TV and jumped between the two settings. There IS a change in picture. There is a lot more noise in memory 2, just like it should be with all the settings at 0. So there is something going on. Test it, you cannot miss it.
Here is what Ivar said; I agree, but that is exactly what Pioneer is doing in the CLD-79 and the
CLD-99. The digitized composite signal is first Y/C separated in by a 2D Y/C
separation ( I do not think it is adaptive, it is hard to find out from the
service manual ) filter in the video noise reduction section. The Y leg and
C leg is then processed and recombined to composite and then again Y/C
separated, in the CLD-99 by a 3D motion adaptive filter, just before the
D/As. This architecture is quite different from the CLD-97, HLD-X9 and
HLD-X0 where the "good" Y/C separation it done just after the field buffer
and no more Y/C separation or recombination is done. ( Except for the
composite output of the CLD-97 ). I clearly prefer latter way of doing it.
I don't know, but I find this text to say that the HLD-X9/X0 DO Y/C seperate directly after the field buffer but do not, like in the case of CLD-99, go back to composite, then to Y/C again before the 3D MA filter.
Tomorrow I will test both the reagular composite output from the X0 and the BNC output. Then we will have more info.
But like I said, there ARE changes when having different settings on the HLD-X9 composite output.
/Mattias