Patent · US Expired

Verifying a time-of-day counter

US5925107A · kind A · utility

21Cited by
10References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 8, 1997
Grant dateJul 20, 1999
Priority date
Expiry dateApr 8, 2017

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F1/14
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

A quiesced and synchronous distributed data processing system includes a primary node, a secondary node and a switch between the primary and secondary nodes. The TOD for the primary node is set depending on the system. The invention sets the TOD for the switch based on the TOD of the primary node. The primary node then verifies the switch TOD. If verified, the TOD for the secondary node is set, based on the TOD of the primary node. Finally, the secondary node self-verifies its TOD.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.