摘要
视频解码器是视频采集系统中必不可少的部分,其作用是将复合视频、Y/C分量等模拟视频信号进行A/D转换,提取图像信号并且分离其中的同步信号和时钟信号。NXP公司的SAA7111集A/D转换与解码功能于一身,通过I2C总线对内部寄存器进行初始化配置,操作简单。具有体积小、成本低、外围器件少等特点,适用于板卡或小型手持终端等数字化多媒体应用场合。
Video decoder is a necessary part of video acquisition system, and its function includes AID conversion of analog video signals such as composite video and Y/C component; extracting image signal; separating synchronous signal and time signal. Co. NXP＇ SAA7111 has functions such as AID conversion and decoding; initial configuration of internal register through I^2C bus. It has characteristics including small volume, low cost, simple operation and fewer peripheral equipments, etc; and it is suitable for digital multimedia such as integrated circuit board and handhold terminal.
出处
《兵工自动化》
2009年第5期81-82,90,共3页
Ordnance Industry Automation
关键词
视频采集
解码
A/D转换
视频信号
寄存器
Video acquisition
Decoding
AID conversion
Video signal
Register
