gatremag-ga:
Thank you for your Question regarding Texas Instruments' DLP chips,
and the differences between the HD2+ and HD3 versions.
The HD2+ was announced in September, 2003:
http://www.dlp.com/about_dlp/about_dlp_press_release.asp?id=1184
According to this press release, the HD2+ featured several new
technologies that made it an improvement over the HD2 chip:
+ a new version of the Digital Micromirror Device (DMD);
+ DynamicBlack(tm) for more "filmlike", higher contrast images;
+ DarkChip2(tm), which features an improved color wheel for better
control over 'green' light, resulting in less dithering in dark areas
of the image;
For the HD3 chip, another new technology was introduced in addition to
these, called Smooth Picture. This is discussed in the following
articles:
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Texas Instruments Closes the Gap with DLP - PCMag, Jan 10, 2004
http://www.pcmag.com/article2/0,4149,1433533,00.asp
"The next generation HD3 chip will implement a technology TI dubs
"SmoothPicture". The key advantage of SmoothPicture is to minimize or
eliminate the "screen door effect", so that individual pixels become
less visible to the eye. The chip also supports the company's
"DarkChip2" technology, designed to improve contrast ratio, as well as
increase the gray scale dynamic range."
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Texas Instruments Announces DLP Technology Enhancements for Large
Screen Digital TVs
http://www.dlp.com/about_dlp/about_dlp_press_release.asp?id=1193
"SmoothPicture: Combined with our cutting-edge third generation of
720p and 1080p chips, it offers the ultimate in picture quality,
providing a smooth, seamless image"
------
Both the HD2+ and the HD3 feature 720 lines of resolution (progressive
scan), for a maximum resolution of 1280x720p.
In the same articles above, you will see that TI has also announced
intentions for a new 'x' series of chips. The xHD3 will feature 1080p
lines of resolution.
I hope this information helps!
Regards,
aht-ga
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