Autoconfigurable device that provisionally configures itself as the primary or secondary peripheral device depending on if another peripheral device is present
US6349345B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2289
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of automatically configuring an autoconfigurable computer peripheral device as a primary device or as a secondary device. There are four possible cases: (1) no other device present, (2) legacy primary device present, (3) legacy secondary device present and (4) second autoconfigurable device present. Host computer device configuration application software provides a signal or numerical data indicating a bit position within an identification number within each autoconfigurable device. If a device identification has a particular logical value at the bit position, the device responds to the signal from the computer. If the device identification has a different particular logical value at the bit position, the device determines whether another device is responding to the signal from the computer. If a first device determines that it should not respond, and a second device responds, the first device provisionally configures itself as a secondary device. If all bit positions are exhausted, and a device has not provisionally configured itself as a secondary device, then the device provisionally configures itself as a primary device. The host computer then sends a particular numeri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.