Memory card circuit with separate buffer chips
US5625593A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Feb 22, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A conventional memory card circuit has a construction where an input terminal and an output terminal of storage means are directly connected with a terminal unit. In consequence, the conventional memory card circuit has a disadvantage that the stored content of the storage means might be damaged when a signal applied from the terminal unit is unstable at the time of inserting or detaching a memory card into or from the terminal unit. Therefore, according to the present invention, a buffer is provided in each of input and output terminals of storage means and the storage means is cut off from outside by the buffer at the time of inserting or detaching a memory card into or from a terminal unit, whereby the stored content of the storage means can be prevented from being damaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.