一种低功耗的红外无线视频传输系统

设计了一套用于传送视频信号的低功耗红外无线传输系统.该系统以反熔丝工艺的FPGA器件作为编解码核心,高速串行红外收发器作为收发模组.FPGA内部配置了游程长度受限码作为红外信道编解码逻辑,并与缓冲、串并/并串转换、循环冗余校验、扰码/解扰等模块一起构成编解码核心.配合辅助的AD/DA接口电路,可实现对复合视频信号从采集缓冲、编码发射到解码回放的完整功能演示.该传输系统的位速率高达16 Mbit/s,而发射模块的功耗低于500 mW,适合应用于大型视频处理系统中作视频采集设备与视频处理设备间的无线接口.

A low power wireless infrared video transmission system

A low power wireless infrared transmitting system is presented for transmitting video signal.Using anti-fuse FPGA devices as Encoding/Decoding(ENDEC) core,and high speed serial infrared transceivers as transmission module in this system,the run length limited(RLL) code is deployed in FPGA as a channel ENDEC module to work together with other modules,including IO buffer,serializer/deserializer,cycle redundancy checksum and scrambler/descrambler. Combined with AD/DA interface circuits,these modules compose an integrated demonstration system,in which the two-channel composited video signal can be orderly captured,encoded,emitted,decoded and displayed.The transmitting bandwidth of the system is up to 16 Mbit/s,but the power consumption of the infrared emitting module is low to 500 mW.Therefore it can be used as a wireless interface between the video capture equipment and the video processing system.