Comments on: 3D HDTV and HDMI Explained

By: JD

JD — Sun, 04 Jul 2010 16:45:35 +0000

I know 1.3 A/V/R’s are not supposed to work right with 3D, so why does my Marantz SR2008 seem to work ok with 2010 Sammy 3D Plasma? I only have one HS HDMI cabel out to TV from my A/V/R with Directv and PS3 running straight to my A/V/R and then no HDMI to Tv directly but is going through my Marantz. I am getting all 3D video and audio from Directv and games from PS3. Can you explain why it is working if it isn’t supposed to be unless one is going from source straight to TV (and not go through reciever)?

Thanks,
JD

By: Mr. Johnson

Mr. Johnson — Tue, 15 Jun 2010 03:00:18 +0000

There is a massive potential market for a 3D converter box that will add an IR emitter and shutter glasses to any person’s system and let them watch true 3D if their TV can simply display the 3D picture itself, which is the case with nearly every set made in the past several years.

So long as the customer has a 3D-capable Blu-Ray player and this as-yet non-existent product, a person would not have to shell out another 2000 dollars to replace a fairly new TV just to get 3D on it.

Is there any company working on such an adapter as far as you know?

By: Vibhor

Vibhor — Mon, 07 Jun 2010 02:09:42 +0000

Hi, I have Samsung TV with 1.3 HDMI inputs now i am looking to buy a reciever, so will a 1.4 hdmi receiver work with my old TV????

By: Falahuk

Falahuk — Thu, 03 Jun 2010 05:00:37 +0000

I have Samsung 3D TV and 1.4 HDMI cabel

olso Dreambox 500HD Can i watch 3D chanel

By: Gekke Henkie

Gekke Henkie — Wed, 28 Apr 2010 04:29:02 +0000

Do I understand correctly that:
1. Panasonic 3D plasma’s do a 3:2 pull-down (24p -> 60 frames per eye), while
2. Samsung/LG/Sony LCD’s do a 5:5 pull-down (24p -> 120 frames per eye)?
Thanks!

Not for 3D with Samsung. It displays 60 frames per eye. The TV shows 120 frames per second of image, alternating with 120 frames of black screen (i.e. left eye image, black screen, right eye image, black screen, left eye image etc).
HD Guru

By: cudelb

cudelb — Tue, 27 Apr 2010 02:56:15 +0000

Dear Guru,

I understand that 1.3 HDMI AVR cannot pass through the 3D signal because the Full 3D TV would “tell” the receiver (through the EDID protocol)that it is a HD3D television and the receiver will not understand (because the 3D ID was not part of the standard when the AVR was designed.) In order to circumvent this, could there not be an option on the 3D TV that asks whether one is using a 1.3 or 1.4 HDMI AVR? In the case where a 1.3 HDMI AVR is used, then the TV would not identify itself as a “3D TV”, but as a regular “HDTV”. Could it work? Can the ID, as far as the EDID is concerned, be software based or is it definitely always hardware based?

By: katnrica

katnrica — Thu, 08 Apr 2010 22:50:41 +0000

In the illustration at the top of this article, it is more precise and technically correct to say ’1080 lines’ rather than 1080 pixels. Likewise, the vertical-blanking interval should be stated as ’45 lines’ rather than ’45 pixels’.

By: gaff

gaff — Thu, 08 Apr 2010 17:19:20 +0000

Guru,

Great article! I (like Lee-post of 2/25/10) have 1.3 HDMI AVR and am looking to buy my first blu-ray player. Looks like the new Panny 350 if I want to try to future proof. Is there any merit to his query regarding a cable that can split 1.4 Video to display and 1.3a audio to receiver? Can it be engineered?

By: jnga

jnga — Mon, 05 Apr 2010 04:46:00 +0000

1)will the mitsu 3d adapter pass thru hdmi audio, particularly multi-channel LPCM, or DDTrueHD/DTS-MA? 2)will the checkerboard 3d video output of the mitsu 3d adapter pass thru an HDMI switching receiver to the tv?

if yes to both, then the mitsu 3d adapter will solve the 3d HDMI switching receiver problem by placing the mitsu 3d adapter between the 3d BD player and the receiver, right?

By: Kurt Hoffmeister

Kurt Hoffmeister — Fri, 19 Mar 2010 16:36:04 +0000

Great Article! In paragraph before Surround Sound Receiver discussion you wrote “at 240Hz (synchronizing with shutter glasses that provide 120 views per second for left and right eyes [120+120 =240].” Most glasses will not operate at rates above ~180 Hz. I believe a right-eye frame is shown twice while right eye of glasses is “open”, then same for the left eye. So the glasses only operate 120 Hz. This also implies that full of motion blur reduction can not be available when watching 3D content.
Regards, -Kurt