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參數(shù)資料
| 型號： | LM1270N |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing |
| 中文描述： | 高亮度場致200兆赫與I2C兼容的RGB視頻自動(dòng)上漿圖像增強(qiáng) |
| 文件頁數(shù)： | 1/27頁 |
| 文件大?。?/td> | 1302K |
| 代理商： | LM1270N |
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LM1270
Hi-Brite 200 MHz I
2
C Compatible RGB Image Enhancer
with Video Auto Sizing
General Description
The LM1270 is a supplementary IC to the low cost chipset
(LCCS). It modifies the video stream prior to the LCCS
preamplifier. The key function of the LM1270 is image pro-
cessing for enhancing pictures or motion video. Image en-
hancement is accomplished by special intermediate fre-
quency boosting. 200 MHz bandwidth assures minimal
impact on the video change when adding the LM1270.
Other functions of the LM1270 are:
1.
Measures the length of the active video and its front
porch time with respect to the horizontal flyback and
vertical sync for auto alignment information.
2.
Calibration mode for determining the start of the image
coordinates.
3.
Data receiver for receiving data encoded on video.
4.
Window highlight with respect to the horizontal and ver-
tical sync, used with the image enhancing feature.
5.
Video source selection, allowing the choice of two ana-
log inputs.
Features
n
Ideal companion IC to the LCCS to provide image
enhancing for viewing pictures or motion video
n
Programmable clamp generator
n
Programmable blank generator
n
Video detection controlled by I
2
C compatible bus,
allowing easy and accurate Hi-Brite window calibration
n
Programmable window Hi-Brite function
n
Programmable image sharpness control (TV emphasis),
adjustable for different line rates
n
Measures video position with respect to the horizontal
flyback and vertical sync pulses, providing necessary
information for auto-sizing
n
Emphasis done either inside or outside the window
Applications
n
Any monitor designed with the LCCS chip set
n
Standard 0.7V video output assures compatibility with
any video pre-amp
Block and Connection Diagram
20063501
FIGURE 1. Order Number LM1270N
See NS Package Number N24D
May 2003
L
2
C
2003 National Semiconductor Corporation
DS200635
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM1270NA | Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing |
| LM1279 | 110 MHz RGB Video Amplifier System with OSD |
| LM1279N | 110 MHz RGB Video Amplifier System with OSD |
| LM1281 | 85 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1281N | 85 MHz RGB Video Amplifier System with On Screen Display (OSD) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1270NA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing |
| LM1276 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1276AAA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1279 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz RGB Video Amplifier System with OSD |
| LM12791DL WAF | 制造商:Texas Instruments 功能描述: |
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