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DLPLCR4500EVM: "up to 120Hz 8-bit grayscale" - regular display DLPs appear capable of higher speeds than 'high speed' DLPs...?

Rutger Semp
Prodigy 85 points
Part Number: DLPLCR4500EVM
Other Parts Discussed in Thread: DLP4500

Hi,

I had a question about the capabilities of the standard display DLPs versus the high speed advanced control ones.

I noticed the DLP4500 chipset touts 'up to 120Hz 8-bit grayscale' speeds, but this had me thinking:
In order to create a full color 24-bit image at 60FPS, doesn't a regular display DLP need to render 8-bit grayscale images at 3*60 = 180hz? Let alone when they run in 120FPS mode, which most display DLPs do support. This would effectively give 360Hz 8-bit grayscale rates, far beyond what the high speed modules are capable of.

I feel like I must be missing something here, would you be able to explain the difference in capability? I'm interested in particularly high framerates for my application, so these numbers stood out to me

  • 0
    TI__Mastermind 28005 points
    Rutger,

    In some chipsets, the ASIC's video interface, for example, may limit the maximum speed at which the system can operate. Furthermore, the use of image-quality algorithms operating on incoming video data may also limit the maximum possible frequency for a given chipset.

    I hope this helps. I've added you as a contact on E2E in case you would like to address specific concerns moving forward.

    Best Regards,
    Philippe Dollo