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世平集团推出 Omnivision 超性价比之行车记录仪方案

 2011-08-17
最近在各大网路或是电视媒体频频报导的行车记录仪,功能可说是汽车使用的黑盒子,借由发动引擎随即可以录影的功能,透过摄影镜头,将车辆行驶途中的影像及声音完全纪录,当意外发生时,立刻提出证据,保障驾驶人自我权利。

  1. 为交通事故提供证据
    安装本产品后,能够记录汽车行驶全过程的视频图像和声音,内部的传感器能够设置冲击力的敏感度,当外界的冲击力大于所设置值,导致该冲击力的现场数据将被记录下来。
  2. 杜绝骗取保险的行为
    许多的交通事故是由于违章造成的,安装了此产品后,事故发生前后20秒的情景能够清晰再现,彻底杜绝制造假现场骗取保险的行为。
  3. 记录停车时恶意刮划车辆的行为
    停车时能够200小时不间断记录视频信息,如果恶意刮划汽车的行为,都能够被产品所记录。

世平集团特针对该市场推出高性价比 OV行车记录仪方案

OV 780 – Features :

General features
  • highly integrated video/audio processor
  • provides low system integration cost without external memory required
Camera interface
  • 8-bit YUV interface
  • supports scalar function for digital zoom function
  • SCCB master to access the image sensor
Video engine
  • supports video recording up to VGA at 30fps
  • rate control to support various bit rates
  • supports video decoding up to VGA at 30fps
DSC functions
  • still picture capture up to 2 megapixels
  • supports playback of still pictures
Display controller
  • supports LCD panels with different interfaces including serial interface
  • supports up to QVGA resolution display and color depth up to 18 bits(RGB666)
  • supports On Screen Display(OSD) and scaling functions
  • supports color space conversion
TV encoder
  • embedded TV encoder supports NTSC and PAL
  • supports embedded or external video DAC
Audio engine
  • embedded audio engine for audio recording and playback
  • embedded 16-bit ADC and 8bit DAC
  • supports external audio DAC through audio serial interface
Embedded micro-controller
  • embedded 2KB data cache and 2KB instruction cache
Host interfaces
  • UART/serial interfaces
  • SCCB/I2C slave
Storage card/NAND flash interfaces
  • supports SD / MMC storage card interface
  • supports SLC NAND flash interface
USB interface
  • USB2.0 HS/FS
  • supports UVC video class for PC camera
  • supports mass storage mode
General purpose I/O (GPIO)
  • most of the I/O ports can be programmed as GPIO.
  • There are 9 dedicated GPIOs
Miscellaneous
  • embedded 3.3V/2.8V to 1.2V regulator
  • embedded PLL
  • embedded USB PHY
Package
  • 128-pin LQFP
  • Temperature range: -30℃ to 70 ℃
  • Package dimensions: 14mmX14mm


硬件规格

Minimal System
  • Embedded 2K data cache and 2K instruction cache
  • I2C EEPROM
  • SPI FLASH interface (OPTION)
  • 8 bit NAND FLASH interface (OPTION)
Audio 部分
  • Embedded 16-bit ADC (Microphone input) and 8-bit DAC (Mono analog audio output)
  • supports external audio DAC through audio serial interface(I2S),Audio Decoder
Video 部分
  • Camera: 支持 8-bit YUV interface 的 camera, 选用 OV 的 OV7740, CMOS VGA image sensor
  • 支持 8-bit YUV interface 的 video decoder
  • Embedded TV encoder supports NTSC and PAL
外设部分
  • 2.4G RF
接口
  • USB 2.0: HS/FS, supports UVC video class for PC camera, supports mass storage mode
  • SD Card
电源部分
  • LDO
被动器件
  • 钽电容、电感等被动器件

Block Diagram
WPIg_OV_OV780-diagram1-20110817.jpg

WPIg_OV_OV780-diagram2-20110817.jpg