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Service Modes, Error Codes, and Fault Finding
The assumption here is that a fast toggle (<2s)
can only happen during ON->SEMI ->ON. In
these states, the AVC is still active and can
provide the 2s delay. If the transition ON->SEMI-
>STBY->SEMI->ON can be made in less than 2s,
we have to delay the semi -> stby transition until
the requirement is met.
There is no need to define the
display timings since the timing
implementation is part of the Tcon.
detection algorithm
The higher level requirement is that audio and
video should be demuted without transient
effects and that the audio should be demuted
maximum 1s before or at the same time as the
unblanking of the video.
Figure 5-7 "Semi Stand-by" to "Active" flowchart (LED backlight 200 Hz)
seconds ago. (to prevent LCD display problems)
Backlight already on?
(splash screen)
No
Request Tcon to Switch on the backlight in a
direct LED or
set Lamp-on I/O line in case of a side LED
Start POK line
return
back to
div. table
Q552.1L LA
Semi Standby
Wait until previous on-state is left more than 2
Assert RGB video blanking
and audio mute
Yes
Wait until valid and stable audio and video, corresponding to
the requested output is delivered by the AVC.
Switch Audio-Reset low and wait 5ms
Release audio mute and wait 100ms before any other audio
handling is done (e.g. volume change)
unblank the video.
Switch on the Ambilight functionality according the last status
settings.
Startup screen Option
and Installation setting
Photoscreen ON?
Yes
Display cfg file present
and up to date, according
correct display option?
No
Yes
Prepare Start screen Display config
file and copy to Flash
Active
5.
EN 29
Initialize audio and video
processing IC's and functions
according needed use case.
No
18770_254_100216.eps
2010-Dec-29
100216
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