Table of Contents
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Main subroutine loop
Main loop start
Process Power-saving status (according to below flow-chart result)
Check gm5020 IFM status .is change or not.
And check Signal cable status (cable not connected or not)
** IFM is the register, which measured the HSYN & Vsyn status
No
Check the IFM result is in the user mode
table?
No
Check Auto-config mode flag already been set?
Read Key status and Process on OSD-screen
Monitoring the time-out of osd status (if no key input persist for
10 sec, the osd time-out counter will trigger)
)
Yes, IFM have change
Is current system status in Power-saving?
No
Check the IFM result is in the standard
Mode table?
No
No
Out of range (input not support) be
confirm
Confirm the frequency (Hsyn or Vsyn) from IFM already
been changed? (Check the change mode flag)
Process (turn off OSD, setting GM5020according to
above parameter, set LED status, set backlight status)
Yes
Check Factory mode flag= 1
No
16
Wake-up gm5020
Yes
(Because gm5020 was in
partial sleeping state)
Yes
Set mode index & parameter
Set change mode flag
Yes
Yes, freq had been change
No
Yes
If the RS232 buffer is full,
process the command (while
adjust white-balance in factory
mode)
Do Auto-config
automatically
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Table of Contents
Troubleshooting
