Semiconductor memory device
US7525807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Feb 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07743
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device according to the present invention comprises a housing including a card bus connector for connection to a host device and having a PC card shape having a thickness of 5.0 mm, four SD memory cards housed in the housing and a control circuit for controlling transmission/reception of a signal between the card bus connector and the respective SD memory cards. The semiconductor memory device is suitably used as a recording medium of a host device for which a higher data transfer rate and a larger memory capacity are demanded. Further, a semiconductor memory device, which is attachable and detachable relative to the host device and thereby portable, and relatively inexpensively obtainable, can be provided, and is directly insertable into a laptop personal computer to be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.