- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄36339 > 935268832557 (NXP SEMICONDUCTORS) COLOR SIGNAL DECODER, PQFP160 PDF資料下載
參數(shù)資料
| 型號： | 935268832557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP160 |
| 封裝： | 28 X 28 MM, 3.40 MM HEIGHT, LEAD FREE, PLASTIC, MS-022, SOT322-2 , QFP-160 |
| 文件頁數(shù)： | 132/178頁 |
| 文件大?。?/td> | 988K |
| 代理商： | 935268832557 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁當(dāng)前第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁
2004 Jul 22
57
Philips Semiconductors
Product specication
Multistandard video decoder with adaptive
comb lter and component video input
SAA7118
8.4.3.2
Vertical scaler (subaddresses B0H to BFH and
E0H to EFH)
Vertical scaling of any ratio from 64 (theoretical zoom)
to 1
63 (icon) can be applied.
The vertical scaling block consists of another line delay,
and the vertical filter structure, that can operate in two
different modes; Linear Phase Interpolation (LPI) and
accumulation (ACM) mode. These are controlled by
YMODE[B4H[0]]:
LPI mode: In LPI mode (YMODE = 0) two neighbouring
lines of the source video stream are added together, but
weighted by factors corresponding to the vertical
position (phase) of the target output line relative to the
source lines. This linear interpolation has a 6-bit phase
resolution, which equals 64 intra line phases. It
interpolates between two consecutive input lines only.
LPI mode should be applied for scaling ratios around 1
(down to 1
2), it must be applied for vertical zooming.
ACM mode: The vertical Accumulation (ACM) mode
(YMODE = 1) represents a vertical averaging window
over multiple lines, sliding over the field. This mode also
generates phase correct output lines. The averaging
window length corresponds to the scaling ratio, resulting
in an adaptive vertical low-pass effect, to greatly reduce
aliasing artefacts. ACM can be applied for downscales
only from ratio 1 down to 1
64. ACM results in a scale
dependent DC gain amplification, which has to be
precorrected by the BCS control of the scaler part.
The phase and scale controlling DTO calculates in 16-bit
resolution, controlled by parameters YSCY[15:0] B1H[7:0]
B0H[7:0] and YSCC[15:0] B3H[7:0] B2H[7:0], continuously
over the entire filed. A start offset can be applied to the
phase processing by means of the parameters YPY3[7:0]
to YPY0[7:0] in BFH[7:0] to BCH[7:0] and YPC3[7:0] to
YPC0[7:0] in BBH[7:0] to B8H[7:0]. The start phase covers
the range of 255
32 to 132 lines offset.
By programming appropriate, opposite, vertical start
phase values (subaddresses B8H to BFH and
E8H to EFH) depending on odd or even field ID of the
source video stream and A or B page cycle, frame ID
conversion and field rate conversion are supported (i.e.
de-interlacing, re-interlacing).
of the offsets.
Remark: The vertical start phase, as well as scaling
ratio are defined independently for the luminance and
chrominance channel, but must be set to the same
values in the actual implementation for accurate
4 : 2 : 2 output processing.
The vertical processing communicates on its input side
with the line FIFO buffer. The scale related equations are:
Scaling increment calculation for ACM and LPI mode,
downscale and zoom: YSCY[15:0] and YSCC[15:0]
BCS value to compensate DC gain in ACM mode
(contrast and saturation have to be set): CONT[7:0]
A5H[7:0] respectively SATN[7:0] A6H[7:0]
, or
8.4.3.3
Use of the vertical phase offsets
As described in Section 8.4.1.3, the scaler processing may
run randomly over the interlaced input sequence.
Additionally the interpretation and timing between ITU 656
field ID and real-time detection by means of the state of
H-sync at the falling edge of V-sync may result in different
field ID interpretation.
A vertically scaled interlaced output also gets a larger
vertical sampling phase error, if the interlaced input fields
are processed, without regard to the actual scale at the
starting point of operation (see Fig.35).
For correct interlaced processing the vertical scaler must
be used with respect to the interlace properties of the input
signal and, if required, for conversion of the field
sequences.
Four events should be considered, they are illustrated in
lower integer of
=
1024
Nline_in
Nline_out
-------------------------
×
lower integer of
Nline_out
Nline_in
-------------------------
64
×
=
lower integer of
1024
YSCY[15:0]
-------------------------------
64
×
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935273916518 | COLOR SIGNAL DECODER, PBGA156 |
| 935273916557 | COLOR SIGNAL DECODER, PBGA156 |
| 935268460118 | 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO5 |
| 935268459115 | 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO5 |
| 935268459118 | 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO5 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
| 935269544557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3 |
| 935269987557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-1US1-V1.8 SUBBED TO 935269987557 |
| 935270713557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC CHP |
| 935270792551 | 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。