Multiple removable non-volatile memory cards serially communicating with a host
US6948016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2004 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | May 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Two or more very small encapsulated electronic circuit cards to which data are read and written are removably inserted into two or more sockets of a host system that is wired to the sockets. According to one aspect of the disclosure, command and response signals are normally communicated between the host and the cards by a single circuit commonly connected between the host and all of the sockets but during initialization of the system a unique relative card address is confirmed to have been written into each card inserted into the sockets by connecting the command and status circuit to each socket one at a time in sequence. This is a fast and relatively simple way of setting card addresses upon initialization of such a system. According to a second aspect of the disclosure, the host adapts to transferring data between it and different cards of the system over at least two different number of the data lines commonly connected between the host and all of one or more sockets, each card permanently storing a host readable indication of the number of parallel data lines the card is capable of using. This allows increasing the rate of data transfer when the need justifies an increased ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.