摘要
超长指令字(VLIW)架构数字信号处理器(DSP)具有强大的处理能力,在该DSP处理器上一方面通过增加专用指令,另一方面通过改进算法,达到了硬件软件全面加速,实现了密码芯片,满足了高清多媒体监控系统的实时加解密和认证等需求。该密码处理芯片首次实现符合安全防范监控数字音视频编码技术标准的可伸缩音视频编码(SVAC[1])码流的安全认证处理,并增加了与音/视频芯片之间的接口,接收音/视频编码流,进行加解密等。密码处理芯片与音/视频芯片共同组成了高清多媒体监控系统。大量的软件和FPGA评估验证保证了数据安全认证的实时性、安全性、正确性。
Very long instruction word architecture digital signal processor （DSP） has a powerful processing ability. By adding special instructions and improving the software architecture on the processor, we realize the cryption chip, meet the real-time en- cryption and decryption and certification requirements for high-definition multimedia surveillance system. The EDSP is the first time to meet the needs of processing the scalable audio and video coding stream which complies with the security monitoring digi- tal audio and video coding technology standards. By realizing the interface between audio/video chip, EDSP receives the audio/ video encoding stream. The three chips together form the high-definition multimedia surveillance system. A lot of software and FPGA evaluation validations ensure the data timely secure and accuracy.
出处
《计算机工程与设计》
CSCD
北大核心
2013年第1期42-48,共7页
Computer Engineering and Design
