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Author Topic: video output processing (FPGA)  (Read 1506 times)

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Offline bbsfooTopic starter

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video output processing (FPGA)
« on: August 26, 2016, 01:13:50 am »
One systems output 320x240 RGB signal, and displayed on the LCD(320x240). Now requires the output to 480x320 LCD, centered image, do not stretch.

how?
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Offline obiwanjacobi

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Re: video output processing (FPGA)
« Reply #1 on: August 26, 2016, 08:42:11 am »
Count...

 :popcorn:
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Arduino Template Library | Zalt Z80 Computer
Wrong code should not compile!
 
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Offline Scrts

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Re: video output processing (FPGA)
« Reply #2 on: August 26, 2016, 02:57:52 pm »
Generate black video of 480x320 and overlay your original video on top. For Altera it's like 5 minutes job: Add color pattern generator, uniform background: RGB 0,0,0. Then add Alpha blending mixer, connect ch0 to the pattern generator and ch1 to your video. Alpha <= '1' on both. Done.
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Offline obiwanjacobi

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Re: video output processing (FPGA)
« Reply #3 on: August 26, 2016, 03:08:04 pm »
Well, if it's real VGA (analog) you need some ADCs in there too, I think....
Also, you may need to resample to correct for timing differences in the video signals..?
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Arduino Template Library | Zalt Z80 Computer
Wrong code should not compile!
 
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