Patent ID: 6078974
Filing Date: 2000-06-20
Classification: G06F

Abstract:
In an extension system for transferring local data from a local site to a remote site using a virtual open collector circuit between the local site and the remote site, the method comprising the steps of:sampling a data bit at the local site at a local clock rate into a stream of local samples corresponding to the data bit;at each sample clock, determining a local state condition S.sub.L of the site; creating a local transmission bit for each local sample as a function of both the local sample and S.sub.L ;transmitting the local transmission bit to the remote site;determining whether to reset a state condition of the remote site to avoid a bi-stable latch-up condition of the virtual open collector circuit; andrepeating the generating, determining, creating, and transmitting steps for data bits at the remote site sampled into remote samples at a remote clock rate and converted into remote transmission bits as a function of both a remote state condition and the remote sample.