Patent ID: 6122285
Filing Date: 2000-09-19
Classification: H04L

Abstract:
A data transfer method using ring connection of an information processing system having a plurality of modules including one of said plurality of modules being a processor module connected with rings comprising a plurality of signal lines, comprising the steps of:distributing a clock to said plurality of modules through a clock line as an operating clock;relaying received signals through the ring in a first module of said plurality of modules to a second module next to the first module in the ring;transmitting a request for a data transmission right through a selection line of the ring in a first module of said plurality of modules;receiving signals from a third module of said plurality of modules through the selection line in the first module; acquiring the requested data transmission right in the first module when the received signals through the selection line include no request for another data transmission right; andtransmitting data through a plurality of data lines of the ring at predetermined cycles of the clock after the acquisition of the transmission right in the first module.