• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 27 subscribers
  • Views 421 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

"patterns" vs "frames"?

Merab Avto
Prodigy 100 points
Other Parts Discussed in Thread: DLPC300

Okay, I think in my previous thread I was confused from the difference between "frame" and "pattern".

I want to project as fast as possible for a special project. Both refresh rate and "frame" rate.

If I understood the manual correctly, the maximum speed for streaming "videos" is 1440 Hz for 1 bit "frames"?

The settings in the GUI program is under the "HDMI" menu so I'm assuming that the "frames" are going to be sent via the mini HDMI cable?

But here the frame rate is set to "60" and "pattern" rate is set to 1440. And its 1 bit mode.

How can I understand this? it is confusing.

Can anyone explain me this, how frame relates to "pattern" and whether I can send 1440 frames/patterns each second to the Lightcrafter and if yes how, without me having to buy one first and try it?

  • 0
    TI__Genius 11255 points

    Hi Merab,

    Each frame consists of 24-bit planes. If you are using 1-bit patterns, then each pattern can be packed into 1 bit plane of a frame. At a frame rate of 60 frames per second, you can achieve a pattern rate of 60*24 1-bit patterns per second. This is how the 1440 pattern rate value is derived.

    Thanks,

    Clinton

  • 0 in reply to Clinton Rodgers
    Prodigy 100 points
    Sorry Clinton but this is not very clear. I understand that a 24 bit frame can "store" 24 1 bit frames (or "patterns" as we call them) since they take up the same space. But when we say the projector runs at 60 *frames* per second and 1440 *patterns* per second, does that mean 1440 individual graphics can be displayed each second, or something else? In other words, does that statement translate to "1440 frames per second" where "frame" is used in laymans terms?

    And that's over 65 MBytes per second. Too fast for the USB port. How can I stream 1 bit frames (patterns) at such speed?
  • 0 in reply to Merab Avto
    TI__Genius 11255 points
    Hi Merab,

    Take a look starting at the bottom of page 3 of the DLPC300 datasheet (www.ti.com/.../dlpc300). There is an explanation of bit-planes/patterns/frames in that section. Let us know if it is still unclear.

    Thanks,
    Clinton