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Altera_Forum
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15 years ago

flicker in CVO -> CVI -> MIXER -> CVO to output screen

hi, In my VIP chain I'm mixing two video streams (one 800x600 and one 640x480) and then clocking out the mixer output to screen. The two streams going into the mixer are setup such that...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

hi,

vgs, your right about there being two cvos in the system and your comment/solotion to the flickering seem reasonable to me. I'll try placing an tripple buffer in front of the mixer_din_2 and hopefully this will provide the neccessary framerate convertion in the system.

With regard to the video stream going into the framebuffer in front of mixer_din_1, the idea is that the cpu in the system is going to generate a 800x600 video stream.

Will it be sufficient to insert an "On-Chip FIFO memory" between the cpu (using avalon-mm interface) and the mixer_din_1(using avalon-st interface) in order to feed the clocked video output to the screen ??

regards saber890