Media card command pass through methods
US8417866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2011 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Nov 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4291
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods for transmitting application specific or extended commands between a host and a memory card are disclosed. Commands for an extended card protocol are embedded in messages, along with a marker, in the data or command portion of a base card transmission protocol that is used to communicate between the host and the memory card. This allows for the transmission of application specific commands that lack a corresponding command in the base card protocol. The method can be implemented on the host side at the device driver level or the file level. In order to implement a read command in the extended card protocol, a write command in the base card protocol with an encapsulated read command in the extended protocol is first sent to a logical address, followed by a read command to the same logical address. Message set identifiers associate embedded commands and data received in separate transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.