參數(shù)資料
型號(hào): VL6524
廠商: 意法半導(dǎo)體
英文描述: VGA single-chip camera module
中文描述: 顯卡單芯片相機(jī)模塊
文件頁(yè)數(shù): 12/70頁(yè)
文件大?。?/td> 505K
代理商: VL6524
System architecture
VL6524/VS6524
12/70
3.2
Microprocessor functions
The microprocessor inside the VL6524/VS6524 performs the following tasks:
Host communication:
handles the I2C communication with the host processor.
Video pipe configuration
: configures the video pipe modules to produce the output
required by the host.
Automatic exposure control
: In normal operation the VL6524/VS6524 determines the
appropriate exposure settings for a particular scene and outputs correctly exposed images.
Flicker cancellation:
The 50/60Hz flicker frequency present in the lighting (due to
fluorescent lighting) can be cancelled by the system.
Automatic white balance:
The microprocessor adjusts the gains applied to the individual
color channels in order to achieve a correctly color balanced image.
Dark calibration:
The microprocessor uses information from special dark lines within the
pixel array to apply an offset to the video data and ensure a consistent ‘black’ level.
Active noise management:
The microprocessor is able to modify certain video pipe
functions according to the current exposure settings determined by the automatic exposure
controller. The main purpose of this is to improve the noise level in the system under low
lighting conditions. Functions which ‘strength’ is reduced under low lighting conditions (e.g.
sharpening) are controlled by ‘dampers’. Functions which ‘strength’ is increased under low
lighting conditions are controlled by ‘promoters’. The fade to black operation is also
controlled by the microprocessor
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