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Accessing loaded images in memory

Samir Zutshi
Prodigy 120 points
Other Parts Discussed in Thread: DLPC300

Hello,

Is there any way to store the images you load onto the lightcrafter's memory buffer and re-access them later?

The load time is around .9 to 1 .6 s sometimes and i need to to be as fast as it does the internal patters. So is there an area in memory where these are being stored?

Thanks,

Samir

  • 0
    TI__Expert 4500 points

    Hello Samir,

    The images can be preloaded in DLPC300's mDDR using the optional FPGA and project them. The typical DMD first bit-plane load time is 215 μs
    and buffer rotate overhead is 135 μs. More information on the bit depth and allowable pattern rates for internal video sequence is available in the DLPC300 Programmer's Guide.

    You can actually save the patterns as a solution by setting the trigger period and exposure time and project them when required.This allows up to 96 1-bit patterns.

    The patterns can also be saved in the SD card if more than 96 patterns are required.

    Regards,

    Divya

  • 0 in reply to Divya Reddy
    Prodigy 120 points

    Hi Divya,

    Thanks for your swift response. I am looking for the fastest way to load the images in the optional FPGA. I have images that are all generally 1 MB + since they have to be of a certain resolution. Im just looking at what CMD1 and CMD 2 needs to be with the Host Write command hex values in order to write the image to the FPGA as well as which ones to read from assuming i'd be using the host read command value.

    Thanks,

    Samir

  • 0 in reply to Samir Zutshi
    Prodigy 120 points

    Oh and one more thing. The images im trying to use seem to be 24 bit images so, after reading another post i realize that the optional FPGA can only be used with internal patterns that are monochrome? I may be able to save images as monochrome regardless, but aside from that i suppose my question would be to do either monochrome internally or 24 bit externally (unless 24 bit internal is somehow possible and i missed it).

    Thanks,

    Samir

  • 0 in reply to Samir Zutshi
    Prodigy 120 points

    I understand the internal monochrome loading now. The only thing that isn't explained much is the use of the FPGA for loading 24 bit images. It would be interesting to know how to use that. Other than that i should be set. Thanks.