SDA9410
5.4
Preliminary Data Sheet
Input signal processing
Input signal processing
The Figure 12 shows a detailed block diagram of the input processing blocks. The input
signal can be vertically and horizontally compressed or horizontally expanded by a large
number of factors. Furthermore the input signal can be processed by different noise
reduction algorithms to reduce the noise in the signal. The noise measurement block
determines the noise level of the input signal. The letter box detection block finds the
start and end line of letter box pictures. The information can be used by a µC to calculate
zooming factors and to control the IC for resizing the picture for a full screen display on
16:9 tubes.
SNRON
NRON
NMLINE, NMALG NOISEME
MASTER
Letter
box
Noise
measurement
detection
YM from Memory
DELM
YINM
Vertical and
horizontal
Spatial noise
reduction
Temporal
YM to Memory
CM to Memory
Line
Delay
-3/+4
noise
compression/
expansion
memories
reduction
UVINM
CM from Memory
SLAVE
Vertical and
YINS
YS to Memory
CS to Memory
Line
Delay
-3/+4
horizontal
compression/
expansion
memories
UVINS
DELS
Figure 12
Block diagram of input processing blocks
The different blocks and the corresponding I²C Bus parameters will be described now in
more detail.
30
Micronas
MICRONAS [ MICRONAS ]
