SDA9410-B13 MICRONAS [Micronas], SDA9410-B13 Datasheet - Page 47

• Manufacturer Part Number: SDA9410-B13
• Description: Display Processor and Scan Rate Converter using Embedded DRAM Technology Units
• Manufacturer: MICRONAS [Micronas]

SDA9410
Decision” block. The I²C parameter TH_AA and TH_LB can be used to influence the
result of the “Line Type Decision” block.
Table 28
The line type AA marks lines which belong to an active area, the line type LB marks lines
which belong to a letter box area (maybe including logos, subtitles) and the line type UNS
marks lines which could not assigned with security to one of both line types mentioned
before.
Figure 20
Each line of the input picture will be assigned to one of three line types (LT) by the
“Histogram” and “Line Type decision” block. The figure below shows in detail the
functionality of both blocks. The “Histogram” block counts the amount of pixels (BC),
which are larger or equal 2*TH_DN_BN (I²C Bus parameter, 1Ch). Depending on the
counter value the line is assigned to one of the three line types by the “Line Type
47
Line Type (LT)
AA
LB
UNS
TH_DN_BN
Block diagram of letter box detection
Line Type Decision of LBD
YINM
Histogram
Priority
1
2
3
Decision
TH_AA
TH_LB
Type
Line
BC
>= 4 * TH_AA
< 4 * TH_LB
< 4 * TH_AA and >= 4 * TH_LB
LT
TH_MUNSL, TH_AUNS
TH_ALB, TH_MA_AA
Processing
Evaluation
Start/End-
Reliability
Decision
line
Input signal processing
Preliminary Data Sheet
Status_SLAA
Status_ELAA
RELY
SLAA
ELAA
Micronas