Asynchronous, contagious and digital aging

Asynchronous Signals in Digital Computers

Identification of spirochetes associated with contagious ovine digital dermatitis.

Spirochetes of the genus Treponema were cultured from 7 of 10 cases of digital dermatitis in sheep. Two cultures comprised Treponema phagedenis-like and Treponema medium/Treponema vincentii-like spirochetes, respectively, while the remaining cultures comprised mixed populations of Treponema medium/Treponema vincentii-like, Treponema phagedenis-like, and Treponema denticola/Treponema putidum-lik...

A Stereo Asynchronous Digital Sample-Rate Converter for Digital Audio

AbstructThe design of an asynchronous digital sample-rate converter for digital-audio applications is presented. The theory of asynchronous sample-rate conversion is discussed using a signal-processing model that is based on highly interpolated input samples. A novel closed-loop address-tracking system is disclosed that solves the problem of clock-edge arrival estimation while at the same time ...

A digital asynchronous sample-rate converter for digital video signals

In this paper, a new all-digital asynchronous sample-rate converter (SRC) for video signals with an effective resolution of 12 bits using digital signal processing is presented. It is designed for the high quality requirements that exist in professional equipment for CATV head ends. The architecture of the digital SRC which is optimized for an implementation with small memory and low processing...

Tools for validating asynchronous digital circuits

Asynchronous design methodologies can yield designs that are smaller, and/or consume less power, than their synchronous counterparts. Traditional tools, oriented toward synchronous designs, may miss critical asynchronous design problems. This paper describes the modeling methodology and hazard analysis of the SIMIC logic simulator that address asynchronous designs. It also describes XPOWER, an ...