- 您现在的位置：买卖IC网 > PDF目录171067 > DDP3315CQA (MICRONAS SEMICONDUCTOR HOLDING AG) SPECIALTY CONSUMER CIRCUIT, PQFP80 PDF资料下载
参数资料
| 型号： | DDP3315CQA |
| 厂商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封装： | PLASTIC, QFP-80 |
| 文件页数： | 2/62页 |
| 文件大小： | 1746K |
| 代理商： | DDP3315CQA |
第1页当前第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页
ADVANCE INFORMATION
10
Micronas
2.1.6. Luma Sharpness Enhancer (LSE)
Sharpness is one of the most critical features for opti-
mum picture quality. This important processing is per-
formed in the LSE circuitry of DDP 3315C.
It consists of the dynamic peaking, the luma transient
improvement (LTI) and an adaptive mixer. The luma
input signal is processed in the peaking and LTI block
in parallel. Both output signals are combined in the
mixer depending on the selected LSE characteristic.
2.1.6.1. Dynamic Peaking
The dynamic peaking improves the details of a picture
by contour emphasis. It adapts to the amplitude and
the frequency of the input signal. Small detail ampli-
tudes are sharpened, while large detail amplitudes
stay nearly unmodified.
The max. dynamic range of small high-frequency detail
amplitudes is 14 dB. The dynamic range of large detail
amplitudes is limited automatically by a non-linear
function that does not create any visible alias compo-
nents (see Fig. 2–4).
Fig. 2–4: Dynamic peaking frequency response
The peaking features two selectable center frequen-
cies of 2.5 MHz or 3.2 MHz (see Fig. 2–5). An adjust-
able coring threshold prevents the enhancement of
small noise amplitudes.
2.1.6.2. Luma Transient Improvement (LTI)
For small detail amplitudes the dynamic peaking is the
most appropriate processing to improve the sharp-
ness. However, for large amplitudes even small over-
and/or undershoots of the peaking are too annoying.
The luma transient improvement enhances the slope
of picture detail without these effects by a non-linear
processing. The contour correction signal calculated in
this block, is limited to the adjacent extreme values to
prevent over- and undershoots (see Fig. 2–7).
The LTI features an adjustable gain control and an
adjustable coring threshold to prevent the enhance-
ment of small noise amplitudes.
The contour correction signals of the dynamic peaking
and the LTI block are combined adaptively to achieve
best sharpness impression.
Fig. 2–5: Dynamic peaking frequency response in S-VHS (all frequencies refers to a 50/60 Hz video signal)
dB
MHz
20
5
10
15
20
02
4
6
8
10
15
10
0
dB
MHz
20
5
10
15
20
02
4
6
8
10
15
10
0
dB
MHz
20
5
10
15
20
02
46
8
10
15
10
0
S-VHS
CF = 3.2 MHz
CF = 2.5 MHz
相关PDF资料 |
PDF描述 |
|---|---|
| DDQ24W7P043A00LF | 24 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DDQ24W7PA00LF | 24 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DDQ36W4P043A00LF | 36 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DDQ36W4PA00LF | 36 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DDQ47W1P043A00LF | 47 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DDP-37CT | 制造商:Pan Pacific 功能描述: |
| DDP400-P1 | 制造商:CCM Assembly & Manufacturing 功能描述:AC Input Cable for ROAL DDP400 series, Bulk |
| DDP400-P4 | 制造商:CCM Assembly & Manufacturing 功能描述:DC Output Cable for ROAL DDP400 series, Bulk |
| DDP400-P6 | 制造商:CCM Assembly & Manufacturing 功能描述:Signal Cable for ROAL DDP400 series, Bulk |
| DDP400-US12-FF | 制造商:ROAL Electronics 功能描述:AC/DC 400W 12V Single Output Enclosed Front Fan, Bulk |
发布紧急采购，3分钟左右您将得到回复。