PAL Video Signal
Pal video signal consists of 625 individual lines.
In 1 second we have 25 frames. Each frame is made from 625 horizontal lines.
each line is 64 microseconds long.
Out of the 625 horizontal lines, few lines are used for vertical synchronization.
Each Horizontal line consist of
-Horizontal Sync Start
– Black Level
– Color Burst (this can be ignored if you are using Black and white Signal)
– Video Signal
-Horizontal Sync End
Vertical Sync lines consist of a transition section. In older analogue based Television this transition is used by the analogue system to shift the position of the electron gun from the bottom to the top of the screen.
Vertical Syncline is made up of 32-microsecond periods. A total of 10 periods mark the transition of vertical sync.
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