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DLP4500: Several questions regarding GUI

Part Number: DLP4500

Hello Sir/Madam,

I have two questions regarding the 4500 GUI software:

1. First question

I connected my PC to 4500 through the micro-HDMI port. I pressed the windows+P shortcut and extended the windows screen to the projector.

My purpose is to run the projector in "pattern sequence  " mode but appears as close to the "video mode" visually to the human eye as possible. The following is my set up:

whereby i used the bit sequence of: 

F0:R0 F0:R1 F0:R2 F0:R3 F0:R4 F0:R5 F0:R6 F0:R7 F0:G0 F0:G1 F0:G2 F0:G3 F0:G4 F0:G5 F0:G6 F0:G7 F0:B0 F0:B1 F0:B2 F0:B3 F0:B4 F0:B5 F0:B6 F0:B7 

Am i correct?

2. Second question

I don't know the purpose of the "frame index" and "bit depth" selections under the pattern sequence mode. Since I simply extended my PC screen to the projector, isn't there only one 24-bit frame sent every 1/60s to the projector? In other words, there is only one frame once every 1/60 s (Windows PC has default refresh rate of 60hz, hence VSYNC happens every 1/60s). Why is there still frame selection? Also what does bit depth mean? 

3. Third question

I read from forum that there are other ways to send the data by dividing it up in different frames to send. Isn't the PC sending 60 frames(screen pictures of 24-bit color) by default? Could you please teach me other ways to send the data besides hooking up to the PC and extend screen? 


Thanks,
Kyle

  • Hello Mike and welcome to the E2E forums,

    Have you read the user's guide for the Lightcrafter 4500 (www.ti.com/.../dlpu011f.pdf) yet? I think it may answer many of your questions. Specifically section 4.1 on page 42 answers questions about the bitplanes. Additionally section 3.1 on page 21 should give you a generic overview of the different modes and different ways to display data.

    Lastly you may be interested in the FAQ on DLP for Advanced Light Control (ALC) applications. (e2e.ti.com/.../dlp_faq).

    I think this is what you were looking for as a general overview. If you still have specific questions about implementation feel free to post a follow-up question or make a new post.

    Thanks,
    Kyle