G
Guest
Guest
I've been looking over previous posts, and I'm curious about flat panel response times. I do do vision research, so delays are rarely acceptable, unless the delay is constant. CRTs are annoying since you have to sync with the refresh, but the delay is consistant. My questions regarding the response time are:
1. Does the image appear gradually over this 20ms or is it 'instant' on but with a delay?
2. is the delay consistant? does 20ms delay mean 20ms every time? Is there some place I can track down the Variance?
3. Is the delay caused by the monitor itself, or in the communication (is it improved by going true DVI)
3. Does drawing happen every 20ms on a cycle (T+0, T+20, T+40) or does it draw 20ms after a program tells it to. If its a cycle, will a draw command at T+15 appear at the T+20 'cycle', and can you detect the start of a cycle.
If its a delay, what would happen if the priogram tried to draw at T+15 and T+20, would they appear at T+35 and T+40? Would only one be likely to appear?
I'm thinking its the latter, since the refresh frequency of these monitors rarely seem to jive with the response times.
A lot of questions, I know. I'd settle for a good article/book/web site on the topic if no-one has the time to answer.
Joe
1. Does the image appear gradually over this 20ms or is it 'instant' on but with a delay?
2. is the delay consistant? does 20ms delay mean 20ms every time? Is there some place I can track down the Variance?
3. Is the delay caused by the monitor itself, or in the communication (is it improved by going true DVI)
3. Does drawing happen every 20ms on a cycle (T+0, T+20, T+40) or does it draw 20ms after a program tells it to. If its a cycle, will a draw command at T+15 appear at the T+20 'cycle', and can you detect the start of a cycle.
If its a delay, what would happen if the priogram tried to draw at T+15 and T+20, would they appear at T+35 and T+40? Would only one be likely to appear?
I'm thinking its the latter, since the refresh frequency of these monitors rarely seem to jive with the response times.
A lot of questions, I know. I'd settle for a good article/book/web site on the topic if no-one has the time to answer.
Joe