SDA9410
Preliminary Data Sheet
Output sync controller (OSCM/S)
FRAME/FIELD
FRAME
FIELD A
odd lines
FIELD B
even lines
Content of picture
DISPLAY LINE-SCANNING PATTERN
Display line-scanning
pattern
TV
∼
Display raster
odd lines
even lines
Display line-scanning
pattern
ϒ
Tube, Display raster
Figure 39
Explanation of field and display line-scanning pattern
The interlaced input signal (e.g. 50 Hz PAL or 60 Hz NTSC) is composed of a field A (odd
lines) and a field B (even lines).
n
n
A - Input signal, field A at time n,
B - Input signal, field B at time n
The field information describes the picture content. The output signal, which could
contain different picture contents (e.g. field A, field B) can be displayed with the display
line-scanning pattern ∼ or ϒ.
n
n
(A ,∼) - Output signal, field A at time n, displayed as line-scanning pattern ∼Ι
(A ,ϒ) - Output signal, field A at time n, displayed as line-scanning pattern ϒΙ
84
Micronas
MICRONAS [ MICRONAS ]
