Card management bus and method
US6412068B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2015
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A card management system architecture for managed startup of a system and for monitoring its operation is provided. Both a method and device particularly suited to carrying out the method are provided. According to one embodiment of the method, a second controller evaluates the status of power supplies and then powers up a first controller and processors on input-output processors (IOPs). The first controller evaluates the status of individual IOPs and enables additional power and data interfaces. Additional embodiments involve additional structures and steps. Redundant channels for communications among controllers and IOPs are preferred. In one embodiment, the first bus is implemented as five serial communication lines. Communication between redundant first controllers and between redundant second controllers allows determination of which controllers should be active. Determining which controllers are active may depend on whether the same controllers are in the system as had been in the system during the last proper operation of the system. Enabling a supply of power may depend on whether two or more power supplies are available. Availability of power supplies cooled by fans may d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.