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Is 16bit grayscale depth possible with .55XGA?

Gokhan Bektas
Prodigy 90 points
Other Parts Discussed in Thread: DLPC200

We are currently using .55XGA DLP kit to display grayscale images at 8bit grayscale resolution but our application specs requires 16bits bit depth. I don't have detailed timing diagrams for the DMD device.

I would like to simply know, if 16bit resolution for dynamic images with this DMD device possible or not?  We could use custom FPGA based control electronics, fast memories etc. But first we have to know if the DMD device supports it or not.

According to the datasheet, the interface is 200MHz 16bit LVDS. So, if every pixel has a 16bit value,  10248x768 is about 800K pixels,  frame rate should be sufficient to display dynamic images in terms of data interface. But I don't know about the physical limitations, timing considerations, pixel-off times etc in detail.

Regards

g.

 

  • 0
    TI__Mastermind 30875 points

    Dear Gokhan,

     

    Yes, the .55 XGA DMD device allows 16bit grayscale resolution. But you would still require the DLPC200 controller chip to talk to .55XGA DMD on the DLP Kit. This controller is designed for 8bit grayscale resolution only. So it is not possible to use .55 XGA DLP Kit for 16bit grayscale resolution.

    Regards,

    Sanjeev

     

  • 0 in reply to Sanjeev
    Prodigy 90 points

    Hi Sanjeev,

     

    Thank you for your response.

    Actually we have a 3rd party DLP development kit. Vendor offers resolutions near to 10bits. But the application strictly requires 16bits of grayscale resolution. You mention DMD device itself supports 16bits.  So there is no physical or electronic limitation on DMD device and  a customized controller design (based on FPGA)  could generate 16bits dynamic XGA images @15-20fps right?

     

    Regards,

    G.

     

  • 0 in reply to Gokhan Bektas
    TI__Mastermind 30875 points

    Dear Gokhan,

    You are correct. No physical limitation from the DMD side for the 16bit data input; as long as controller generate the bits the DMD should work. 

     

    Regards,

    Sanjeev

  • 0 in reply to Sanjeev
    Intellectual 750 points

    Dear Gokhan,

    We've created  previously solution that supports a 24-bit grey-scale input, however this was using a different device. Please contact me at a-kunzman@kp-corp.com and we can see if it fits your needs.

     

    Adam Kunzman

    Keynote Photonics