Memory cartridge having stored data protecting function and memory protecting method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 5, 1989
Grant Date -
N/A
app pub date -
Mar 15, 1988
filing date -
Mar 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable memory cartridge includes a mass memory, a data bus, an address bus, control signal lines for carrying signals for making access to the mass memory, a password memory for storing a flag indicating the inhibition of read/write access to the mass memory, a password memory for storing a particular authorized password, and a comparator for comparing an input password with the particular password set previously. Whe the comparison results in coincidence, a control signal required for the access is supplied to the mass memory for enabling the access to the mass memory in data read or write mode or data read and write mode.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully