- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67389 > AT76C453AC-MY19T (E2V TECHNOLOGIES PLC) IMAGE SENSOR-CMOS, 708(H) X 494(V) PIXEL, 30fps, SURFACE MOUNT PDF資料下載
參數(shù)資料
| 型號： | AT76C453AC-MY19T |
| 廠商： | E2V TECHNOLOGIES PLC |
| 元件分類： | 圖像傳感器 |
| 英文描述： | IMAGE SENSOR-CMOS, 708(H) X 494(V) PIXEL, 30fps, SURFACE MOUNT |
| 文件頁數(shù)： | 42/44頁 |
| 文件大?。?/td> | 768K |
| 代理商： | AT76C453AC-MY19T |
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頁當(dāng)前第42頁第43頁第44頁
7
5446A–IMAGE–02/06
AT76C453AC-MY19T
After RGB processing the channels are separated into a luminance (Y) and two color difference
paths (UV). The signals are generated using the following formulas:
Y = [19R + 38G + 7B]/64
U = B -Y
V = R -Y
The YUV signal is converted into a YUV 4:2:2 format by a factor two down-sampling of the UV
signals. In advance of the down-sampling the UV chrominance signals are low pass filtered to
suppress aliasing artefacts.
Co-sited positioning of the UV samples with respect to the Y sample. Optionally this half pixel
shift of UV with respect to Y can be suppressed to ease external conversion to a JFIF (MPEG1)
compliant YUV 4:2:0 data format.
Parallel to the UV down scaling the contour signal is processed. The vertical contour gain can be
tuned separately from the horizontal contour. This allows it to tune the amount of vertical contour
with respect to the horizontal contour. Then the horizontal and vertical contour signals are added
and applied to a contour coring and a contour gain circuit. Finally the contour signal is added to
the luminance (Y) signal.
After the UV down-scaling the chrominance processing includes a false color killer. The color
killer suppresses wrong colors which could occur in case parts of the scene are overexposed
which causes pixels to saturate.
The YUV processing function continues with separate gain controls for the Y, U and V signals.
These gains are used to fine tune the Y, U and V color balance and to adjust the luminance and
color saturation level without disturbing the Auto Exposure (AE) and Auto White Balance (AWB)
loops.
5.2.5
Measurement Engine
The measurement engine extracts measurement data from different color domains of the cam-
era signal processing chain. This measurement data is used by the auto-control loops which run
on the embedded micro-controller.
The measurement windows can be tuned on a 40 × 40 pixels grid to enable the possibility for
example back light compensation.
For auto exposure five parallel measurements are done. The intensity levels of pixels falling in
the different defined measurement windows are accumulated during each frame.
For auto white balance a single measurement window can be defined. Before a pixel contributes
to the white balance measurement the color tone of the pixel is checked.
When the color tone complies to the defined limited white area the signal levels are added to the
measurement data.
During each frame, the micro-controller has access to the values measured in the previous
frame.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ATF-33143-TR2 | X BAND, Si, N-CHANNEL, RF SMALL SIGNAL, HEMFET |
| ATF-33143-BLK | X BAND, Si, N-CHANNEL, RF SMALL SIGNAL, HEMFET |
| ATF-33143-TR1 | X BAND, Si, N-CHANNEL, RF SMALL SIGNAL, HEMFET |
| ATF-50189 | 0 MHz - 2400 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| ATS535SSB | PROXIMITY SENSOR-HALL EFFECT, 65-95mA, ROUND, THROUGH HOLE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT76C502A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:11-megabit WLAN Media Access Controller MAC |
| AT76C503A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Universal Serial Bus 11-megabit WLAN Media Access Controller |
| AT76C504 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AT76C504 Summary [Updated 01/03. 3 Pages] A single-chip baseband controller that can handle IEEE 802.11b standard compliant data rates of up to 11 Mbps and provides all processing and functionality needed for the MAC protocol of IEE 802.11b. It provides a glueless interface confirming to PC Card 95 and can support a variety of RF interfaces. Complete available under Non-disclosure Agreement. |
| AT76C504A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:802.11b Baseband and Media Access Controller (MAC) for PCMCIA Bus |
| AT76C505 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:802.11b Media Access Controller (MAC) and Baseband with USB Interface |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。