自制多媒体数字录音编辑系统

介绍了采用多媒体计算机录制和编辑语言教学磁带的数字系统 ,该系统通过模拟信号与数字信号间的转换 ,可使制作的录音带声音清澈、失真度小 。

Gradual refinement for application-specific MPSoC design from Simulink model to RTL implementation

The application-specific multiprocessor system-on-chip(MPSoC) architecture is becoming an attractive solution to deal with increasingly complex embedded applications,which require both high performance and flexible programmability. As an effective method for MPSoC development,we present a gradual refinement flow starting from a high-level Simulink model to a synthesizable and executable hardware and software specification. The proposed methodology consists of five different abstract levels:Simulink combined algorithm and architecture model(CAAM),virtual architecture(VA),transactional accurate architecture(TA),virtual prototype(VP) and field-programmable gate array(FPGA) emulation. Experimental results of Motion-JPEG and H.264 show that the proposed gradual refinement flow can generate various MPSoC architectures from an original Simulink model,allowing processor,communication and tasks design space exploration.

基于HPD的核电厂分布式控制系统验证与确认

验证和确认(V&V)过程是核电厂安全级数字化分布式控制系统(DCS)应用和取证关注的重要问题之一。硬件描述语言可编程逻辑器件(HPD)技术应用于核电厂安全级DCS会给取证带来新的审查问题。对国外的V&V法规和美国电气与电子工程师协会(IEEE)标准进行初步分析,依据IEEE 1012-2012标准,结合HPD特性,给出HPD系统各生命周期过程的V&V任务和方法,以及基于HPD技术的安全级DCS审查建议。