■ 产品简介 行车记录仪用于记录行车过程中视频图像,声音,位置,车速,冲击力等信息的设备。 当途中意外发生时,可提取事发时的视频作为证据,保障驾驶人权利。当用户自驾出游时候,还可作为拍摄沿途风景的工具。 行车记录仪通常具备摄像头、传感器和显示屏等,当汽车发动后,行车记录仪随即进入工作状态,开始记录车辆的行驶信息,记录时间大约为1-2小时左右,一般为不间断循环记录。当内部的传感器侦测到外界冲击力较大时,现场数据将被记录下来,并单独保存(不被覆盖)。 该产品最早应用于海外市场,由于功能实用,方案成本现逐步降低,已达到国内车主承受的合理价位,未来将有非常广阔的市场空间。 ■ 功能特点 双镜头设计,记录行车前后视频 支持GPS,G-senser,记录经纬度坐标,加速度 GRD软件功能完整,直接量产 硬件VGA 720P 1080p共板设计,应用全覆盖 低功耗,性能稳定 不间断连续录像,不漏秒,不错失任何重要画面 芯片选型表: ■ 技术参数 | FA626 ARM® v5TE ISA CPU, up to 600 MHz, 32K I-cache/32K D-cache | | 16- bit DDRII SDRAM controller up to 800MHz | SPI NOR-type flash and NAND-type flash with 24-bit ECC | | Encoder supporting baseline profile, from level 1 3.1 up to 720P@45 fps or 1080P@30 fps | | MPEG-4 supporting simple profile level 0 ~ 3, encoder up to 720P@30 fps | JPEG is compliant with ISO/IEC 10918-1 baseline standard. | | Support 2 ITU 656 interfaces - YUV 4:2:2 and 16-bit YUV interface | Resolution: Up to 1920 x 1080 | Support color OSD and input fractional scalar | | Support 12 bit parallel Bayer RGB | Still mode supports up to 5M (2592x1944) resolution, video mode supports | | | ITU-1120 16-bit video output, up to 1024x768 | OSD with 256 programmable 12 x 16 fonts | | Support 1 channel composite TV out | | 2 channels SAR ADC for battery detection, light detection or key pad | | Support 8 kHz ~ 96 kHz sampling rate for both ADC and DAC | 90 dBFS SNR for ADC line-input and line-output | | Hardware implementation of AES/DES/3DES algorithm with DMA function | | 802.3 MAC+PHY, USB 2.0 OTG+PHY | | SDIO/SDHC controller, Timer, WDT, RTC, INTC, GPIO, I²C, PMU, SPI(I²S), UART, PWM | | | | | |
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