JVC LT-37X898 / LT-42X898 / LT-47X898 1080p 120Hz 10-bit

Reading some other information on this subject, and being relatively informed myself, I wanted to interject some technical info on how 120hz helps reduce perceived blur.


From google, search on "retina blur eye tracking" and read the articles on poynton and acm.


If you read and understand motion blur that occurs inside the retina, you'll understand this tech. Otherwise, generally, there is confusion in the consumer's understanding of this stuff.


Of course, I would actually prefer an option (for video games and high speed sports) to actually strobe instantly each frame in order to completely eliminate retinal blur.


From poynton article, the well-informed author suggests rather than an instant strobe (which I think could be nice):


"Anecdotal evidence suggests that an exposure time of 1 / 3 of the frame rate is a good compromise."


I saw so much uninformed information (for example bad conclusions that they are eliminating blur from the source material) I wanted to contribute.


The blur that's being eliminated, and yes this is true, is completely inside your retina, and not in the source imagery at all.


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- Ahigh

New posting from JVC website from Cedia.

JVC LAUNCHES LCD TV LINE FEATURING 2ND GENERATION HIGH-SPEED TECHNOLOGY


New full HD Clear Motion Drive II sets feature 10 bit IPS panels for accurate colors and clear motion.


DENVER, September 5, 2007 – A new line of JVC full HD LCD televisions featuring the company’s second generation high-speed LCD technology was announced today. The new flat panel sets feature the company’s Clear Motion Drive II technology with a 120 frames per second (120Hz) frame rate, double the typical rate, to deliver crisp fast action images. To further enhance performance, the new line uses 10-bit LCD panels for more accurate color reproduction and more natural grey scaling.


JVC’s Clear Motion Drive II 10 bit 120Hz technology will be offered in three new sets – the 37-inch LT-37X898, the 42-inch LT-42X898 and the 47-inch LT-47X898. JVC was the first to introduce high speed LCD technology with the launch of Clear Motion Drive in Japan in 2005. The technology’s second generation, Clear Motion Drive II, has been designed specifically for full HD (1920 x 1080) displays and improves motion detection fivefold compared to the original high speed driver.


To reduce blurring of moving images, JVC’s CMD II uses a frame doubling driver (120Hz) and motion interpolation. A JVC algorithm detects the movement in images and increases the frame rate to 120Hz to create an interpolated image that is displayed as two frames – the original plus the newly interpolated frame – in the same time it takes a conventional (60Hz) set to display a single frame. This delivers moving images without blurring or flickering. And compared to other frame doubling technologies, inserting an interpolated frame maintains image brightness.


JVC’s original CMD technology was applied to a 720p LCD panel and detected only horizontal motion. In its new full HD incarnation and in contrast with most other frame doubling technologies, JVC’s Clear Motion Drive is multi-directional, detecting image data from more than 8,000 surrounding dots in a frame to create a pixel and calculate movement from the current frame to the next. This process is performed on all two million pixels (1920 x 1080) in a frame to interpolate for movement in all directions.


An indication of CMD’s ability to deliver sharp images is the panel’s motion picture response time, or MPRT. Though liquid crystal response time has long been used as a measure of LCD TV performance, JVC considers MPRT, a relatively new measurement gaining wider use, to be a better performance indicator. MPRT measures the rate of image blurring and is based on how the human eye perceives speed. A faster MPRT means less blurring. JVC research shows that for any given liquid crystal response time, the MPRT will be significantly better at 120Hz than at 60Hz. In addition, the improvement is more apparent at lower response times. A 120Hz-driven LCD panel with an eight millisecond liquid crystal response time will achieve an MPRT figure that’s superior to what a 60Hz-driven panel with a zero millisecond liquid crystal response time can achieve. As a result, the 120Hz panel will have less blurring of moving images.


To further enhance performance, JVC’s CMD II TVs use a 10 bit IPS LCD panel, which renders more than one billion colors for rich, natural color reproduction, provides natural gray scaling and provides 64 times smoother gradation than does an 8 bit panel. To get the most out of the advanced 10 bit 120Hz panel, JVC’s high-speed LCDs feature the company’s fifth generation D.I.S.T. (Digital Image Scaling Technology) engine on the JVC-exclusive 32-bit Genessa chip, which combines all core image processing circuits together in a single chip that allows for faster communication among circuits. What’s more, the panel features IPS (In Plane Switching) technology for a wide 178-degreee viewing angle.


Specifications include a contrast ratio of 2000:1, 4.5msec response rate, 500cd/m2 brightness, and a 178-degree viewing angle.


All three JVC LCD TVs include three HDMI v1.3 inputs, one RS-232 interface, one PC input, one Smart Video input, two component inputs, one S-Video input, three AV inputs, one optical digital audio output and one fixed audio output.


Each set’s sound package includes MaxxAudio, a suite of five psychoacoustic DSP technologies that compensate for the limitations of small speakers. The sound package also includes a 20-watt amplifier, JVC’s Twin Oblique Cone speakers, Advanced Hyper Surround Plus, and JVC’s Smart Sound, which maintains a constant volume level as content changes (such as from program material to commercial).


A universal remote control is included with each set, offering direct selection of five different video inputs.


JVC’s new Clear Motion Drive II LCD TVs will be available this month as part of JVC’s new Procision series of premium-level products to be sold through a select group of dealers. The 37-inch LT-37X898, the 42-inch LT-42X898 and the 47-inch LT-47X898 will sell for about $2,100, $2,600 and $3,300, respectively.


Looks very nice and competitve with Sony in terms of specs. Can't wait to see one in the flesh.

Short vid showing JVC's new model compared against the competition:

From Gizmodo : http://gizmodo.com/gadgets/cedia07/j...?autoplay=true


JVC showed us an impressive demo of its Procision (yes, that's the way these guys spell it) line of LCD monitors announced a couple of months ago and shipping this month. JVC lined up its 47-inch LT-47X898 (second from the left) against contenders from Sony (at left), Toshiba (third in the row) and Sharp (on the far end). Here you can plainly see the JVC monitor responding quicker to a controller of this Madden '08 football game on a Sony PS3.


Next, the demo showed the Sony panel in Game Mode, but then its color didn't look nearly as good and still couldn't quite keep up. Yeah, the JVC clearly beat the other three, but only by a couple of frames. But still, when you're hard-core gaming, every frame counts.


JVC showed a second demo (which is impossible to see on this 30fps video) that was also impressive, demonstrating how its 120Hz interpolation can smooth out artifacts in an image. JVC's now in its second generation of this double-framed 120Hz goodness, where they actually create extra frames in between each of the normal 60 frames, estimating where objects would be in between and literally creating something out of nothing.


In person, there was a noticeable difference between the brands, all of which were running 120Hz frames, especially in scenes with lots of movement. Of course, in this demo JVC's TV looked the smoothest by far. Whether this demo is rigged or not (and that wouldn't be that hard to do), this 120Hz capability is getting to be a must-have feature.

All motion processing is not the same. It's nice to have some "side-by-side" (see post #14) and quantitative testing. (Other than just the marketing bs, for example: "we do _____ motion ..." plug in your choice of hype: ultra, perfect, super, pure, smooth, auto, clear, ...)


For example, quote from Sharpjunkie re Sammy 71 vs 81:

"AutoMotionPlus120hz on the 71 works in all 3 , dynamic, standard, and movie and you can turn it to off, low, med, and high in all three display settings. It isn't really needed for 24hz content, but on low it is fun to put on and let your friends view a blu ray with automotionplus. It makes a very dramatic effect and for those that have never seen it, they will starring at the screen as not to turn away. The Led motion plus doesn't even have that dramatic effect. On, off, you can barely tell.


And quantitative testing (either you can read the newspaper or you can not.)


Quote from ssammy:

"...Something really cool - in Citizen Kane there is a scene with a bunch of guys on a train reading newspapers. The headline reads "Traction Trust Exposed." With Clearframe set to "off" the newspapers are very difficult if not impossible to read without getting a headache - it kind of stumbles by in double images. With Clearframe "on" the headline is very clear and effortless to read. I had thought the demo for Clearframe was probably hyped and enhanced but it is not. I kept rewinding the scene and changing the setting from on to off and it was remarkable..."


" ...I should have been more clear in my post. The camera was panning by several people reading their newspapers..."