Data transfer system, computer system and active-line inserted/withdrawn functional circuit board
US5787261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1995 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is an object of the present invention to provide an active-line inserted/withdrawn functional circuit board, a data transfer system and a computer system which systems allow the functional circuit board to be inserted and withdrawn with signal lines remaining in an active state while achieving a high speed data-transfer of a bus, and the reliability to be enhanced by eliminating malfunctions which occur particularly during the insertion of a functional circuit board. The data transfer system or the computer system comprising: a functional circuit board having a functional circuit, a pre-charge resistor and a switching element connected in parallel to an input/output signal path of the functional circuit and a switching control means for controlling the conduction of the switching element through synchronization with a delayed clock signal resulting from delaying a bus clock signal for use in data transfers through the bus by a time shorter than a bus-clock cycle time of the bus clock signal; and a connector provided on an input/output end of the parallel connection of the pre-charge resistor and the switching element, whereby the functional circuit board can be inserted and with…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.