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DLP2010EVM-LC: Frames per second of the projector

Fabian Camilleri
Prodigy 30 points

Part Number: DLP2010EVM-LC

Dear TI support,

I am interested in buying the DLP2010EVM-LC Evaluation Module. I am looking for a projector that is capable for displaying images at 1000 FPS in 1 bit color with a resolution of 720p. After watching the, Selecting the right DLP Pico EVM on your youtube channel, I set my eyes on this model.

I had one question regarding the connection between the computer/laptop and the projector. I have read on the DLPC3470 Display and Light Controller Datasheet that it reaches High speed pattern rates up to 2500Hz in 1-bit. Does this mean it reaches an FPS of 2500? And if so, with what connection medium does it achieve this? Is it through it's HDMI cable?

Hope to hear from you soon,
Fabian Camilleri

  • 0
    TI__Mastermind 28005 points

    Fabian,

    Welcome to the E2E forums, and thanks for your interest in our DLP technology.

    For starters, here's a quick FAQ on the Light Control EVMs: https://e2e.ti.com/support/dlp/f/94/t/729968

    As for your current query, the system does achieve the pattern rate above. This is achieved by encoding the binary (or 8-bit) patterns within a standard HDMI video signal. The EVM receives patterns through its HDMI port at a video framerate up to 120 Hz, which is comprised of a typical RGB888 (so, 8 bits per color) video data. So, you can use a standard HDMi connection to drive your patterns.

    To achieve the high framerates described above, the individual bits in the RGB888 signal (so, 24 bits total) are used to encode the binary patterns. The DLPC3470 controller is able to take these binary patterns (24 1-bit patterns at a video rate of 120Hz) and decode them into binary patterns and translate them into individual DMD patterns at an effective rate of ~2500 Hz (24 * 120 = 2880 Hz).

    I hope this helps. Let me know if you have any questions on the same.

    Regards,

    Philippe Dollo

  • 0 in reply to Philippe Dollo
    Prodigy 30 points

    Dear Mr Dollo,

    Thanks for your reply.
    Ok so just to confirm, if I want to use the projector at a high frame per second, the information is passed from the computer to the DLP2010 from the USB.

    First the bit patterns are loaded from computer into the GUI by importing the images, then the GUI loads the images into the projectors flash and then the projector displays the images according to the pre exposure dark time, exposure time and post exposure dark time which dictate the frequency.

    Is this thought correct?


    Thanks in advance,
    Fabian Camilleri

  • 0 in reply to Fabian Camilleri
    TI__Genius 12575 points

    Hello Fabian,

    The USB port is used to send commands, splash screen images, and firmware updates to the EVM. The commands determining frame rate will be sent through the USB to the controller. Any external video feed will be sent through the HDMI cable. The controller will match its preset frequencies to best accommodate the external video input.

    Your understanding for the process by which the projector displays images is mostly correct. The only point that requires a small alteration is that the firmware is designed for the exposure and dark times to work in parallel with the frequency. They do not necessarily dictate one another.

    Let me know if you have any further questions.

    Kindly,

    Austin

  • 0 in reply to Austin Snyder
    Prodigy 30 points

    Understood! Thanks Philippe Dollo and Austin for your help!