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參數(shù)資料
| 型號： | ADJD-J823 |
| 廠商： | Avago Technologies Ltd. |
| 英文描述： | Color Management Controller with Integrated RGB Photosensor |
| 中文描述： | 色彩管理控制器集成RGB光 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 275K |
| 代理商： | ADJD-J823 |
6
Open Loop
Sensor Gain Self-Adjustment
Read and Store Red LEDs Data
Read and Store Green LEDs Data
Read and Store Blue LEDs Data
Compute Calibration Data
Store Calibration Data &
Other Configuration Data
Factory Calibration
Factory calibration is needed at a system level to create
a ‘snapshot’ of the initial conditions of the system. The
color management algorithm references the snapshot
data. In effect, the calibration data trims out variation in
the entire signal chain from LEDs to sensor to ADC. The
figure below shows the calibration procedure in brief.
First, the device is put into “open loop” mode in which the
color management algorithm is turned off.
Second, the host controller needs to determine the
optimum sensor sensitivity for the given brightness de-
tection level. The sensitivity is a combination of several
internal settings. Searching for the optimum settings can
be performed manually or through an automatic search
routine which is built into the device. The host can start
the routine by issuing a command to the device. The
device will then turn the LEDs (usually at maximum duty
factor) and start the search routine.
Next, the host needs to turn only the Red LEDs on. An
external camera must be set up to capture the CIE co-
ordinates of the RED LEDs. The scaled XYZ readings are
then written to the device. At the same time, the host
needs to instruct the device to sample the RGB sensor
and store the results.
This is repeated for the Green and Blue LEDs.
Lastly, the host needs to instruct the device to start a
calibration calculator. The calculator uses the camera
and sensor readings for each color to develop a map-
ping matrix that maps the RGB sensor to the standard
CIE color space.
The mapping matrix and other configuration data is the
device setup data referred to in the previous section.
Factory Calibration Flow Chart
For details, refer to application note 5241 ADJD-J823
programming manual
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| ADJD-MJ50 | 功能描述:LED照明模塊 RGB LED Light Strip Top Emitting RoHS:否 制造商:Cree, Inc. 產(chǎn)品:LED Modules LED 數(shù)量:1 照明顏色:Neutral White 射束角:96 deg 波長/色溫:3500 K 光強度: 光通量:3000 lm 寬度: 長度:88.2 mm 系列: 封裝:Bulk |
| ADJD-MJ51 | 功能描述:LED照明模塊 RGB LED Light Strip Top Emitting w/cable RoHS:否 制造商:Cree, Inc. 產(chǎn)品:LED Modules LED 數(shù)量:1 照明顏色:Neutral White 射束角:96 deg 波長/色溫:3500 K 光強度: 光通量:3000 lm 寬度: 長度:88.2 mm 系列: 封裝:Bulk |
| ADJD-MJ60 | 功能描述:LED照明模塊 RGB LED Light Strip Side Emitting RoHS:否 制造商:Cree, Inc. 產(chǎn)品:LED Modules LED 數(shù)量:1 照明顏色:Neutral White 射束角:96 deg 波長/色溫:3500 K 光強度: 光通量:3000 lm 寬度: 長度:88.2 mm 系列: 封裝:Bulk |
| ADJD-MJ61 | 功能描述:LED照明模塊 RGB LED Light Strip RoHS:否 制造商:Cree, Inc. 產(chǎn)品:LED Modules LED 數(shù)量:1 照明顏色:Neutral White 射束角:96 deg 波長/色溫:3500 K 光強度: 光通量:3000 lm 寬度: 長度:88.2 mm 系列: 封裝:Bulk |
| ADJD-S311-CR999 | 功能描述:圖像傳感器和彩色傳感器 RGB Color Sensor RoHS:否 制造商:Avago Technologies 類型:Color Sensors 工作電源電壓:2.5 V 封裝 / 箱體: 圖象大小: 顏色讀出:Color 最大工作溫度:+ 70 C 最小工作溫度:- 25 C 封裝:Reel |
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