Part Number: DLP2010EVM-LC
Hello All,
A few months ago I opened an issue regarding display artifacts in Space Coded Pattern (Splash screens) mode (https://e2e.ti.com/support/dlp/f/94/t/776838?tisearch=e2e-sitesearch&keymatch=splash#pi320995=2).
More specifically, I crafted a specific test card to test the 2x8-bit pattern display functionality :
Since the splash screens are only 16 bit (RGB565) in resolution, the two 8-bit channels must be split over two color channels as follows :
(This is the exact same image content but the bitplanes are reordered)
This display card contains several gradients in different orientations for both the A and B channel. Hence, there is a relatively high frequency content on the lower pattern bits, which are mapped over the green channel MSBs in the case of pattern B :
This leads to severe image artifacts that smear beyond the affected bitplanes !
It seems that all of the image processing is done in an RGB space, and high contrast edges are impacting the resulting image, even though the light control modes should bypass most if not all of the graphics pipeline.
Now, the real problem is that this behavior also manifests in external pattern streaming mode (over HDMI). For instance, displaying the above test cards (both the original red and green, and the reordered RGB565 one) should give the same results in 24x1-bit frame mode. However, in the case of the reordered test card, artifacts in the high-frequency blue-green zones are overlaid on the projected image.
Are there any updates on the causes and workaround for this issue ?
Best regards,
Guillaume
