FH8510 is an image signal processing chip for CIS (CMOSImageSensor), which has a built-in powerful image processing engine, CMOS image sensor interface, TV encoder, D / A converter, provides NTSC / PAL output, and also provides ITU.BT65610Bit The output is mainly used in low-end standard definition analog CCTV cameras, car rear-view cameras and building intercom cameras. FH8510 can support a variety of CMOS image sensors, with low power consumption, high resolution, flexible configuration and high degree of customization. The default configuration of FH8510 can support OV7740, OV7725, and more CMOS image sensors can be configured through external EEPROM. FH8510 OSD uses hardware image data decompression technology, all OSD data can be placed in EEPROM. FH8510 provides an IRLED and IRCUT control interface, users can set the opening and closing threshold.
2.1, video input
Support SVGA, D1, VGA input
RGBBayer
Maximum data bit width 10-bit
Configurable clock positive and negative edge sampling
Frame valid and line valid signal polarity can be configured
Maximum pixel clock 54MHz
2.2, image processing (ISP)
RGBBayer data format, arbitrary coordinates of Sensor output window
Automatic color to black and white
Fixed pattern noise cancellation
Automatic detection and elimination of dead pixels
Sensor column fixed mode noise cancellation (external 4KBEEPROM)
Vignette compensation (LensShadeCorrecTIon)
Configurable lens center position
The compensation coefficient table is configurable
Automatic black matrix elimination
Adaptive 2D denoising
Image information statistics
Configurable number, position and size of statistical windows
The maximum number of statistical windows is 64
Provide maximum, minimum and average values ​​for each window
Automatic exposure, 50Hz / 60Hz flicker elimination
Automatic white balance
CFA interpolation based on edge detection
Automatic color correction, realizing configurable color space conversion RGB2RGB
Gamma correction, Gamma table is configurable
Image enhancement
Contrast, hue and saturation adjustment
Image sharpening (5x5 filtering, intensity can be configured)
Image zoom
Configurable scaling core, support stepless scaling, matching Sensor output format and SD format
Configurable horizontal and vertical scaling
Support 64 phases, the initial phase is independently configurable
Image Resolution
VGASensor, 420TVL
D1, SVGASensor, 540TVL
2.3, video output
Composite video CVBS (NTSC720 & TImes; 480PAL720 & TImes; 576)
ITU.BT-656 (10Bit) output (optional)
2.4, OSD
1 Graphic layer overlay (external 8KEEPROM)
Graphic window position can be configured
Graphic window height and width can be configured
Graphic data format can be configured (support lossless compression 1 ~ 6bpp index bitmap)
Palette content is configurable, supports up to 64 colors 32bit palette (ARGB8888 format)
Hardware flashing display control
Hardware Graphic data decompression
Hardware Graphic data DMA transfer handshake
2.5, clock
6MHz crystal
2.6, EEPROM configuration
2KBYTE supports multiple CMOS image sensor configurations
4KBYTE supports multiple CMOS image sensor configurations and column fixed mode noise cancellation
8KBYTE supports multiple CMOS image sensor configurations, column fixed mode noise cancellation, OSD
3. Typical applicationsThe occasions that can be used include building intercom, security monitoring, and rear view system, as shown in the following block diagram:
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