JPH0455651U - - Google Patents
Info
- Publication number
- JPH0455651U JPH0455651U JP1990097282U JP9728290U JPH0455651U JP H0455651 U JPH0455651 U JP H0455651U JP 1990097282 U JP1990097282 U JP 1990097282U JP 9728290 U JP9728290 U JP 9728290U JP H0455651 U JPH0455651 U JP H0455651U
- Authority
- JP
- Japan
- Prior art keywords
- address data
- memory
- comparison
- storage means
- addressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006870 function Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Storage Device Security (AREA)
Description
第１図は、本考案の一実施例の回路構成を示す
ブロツク図である。
１……ＩＣメモリカード本体、２……メモリ、
３１，３２……トラツプアドレス記憶部、４１，
４２……比較回路、５……フリツプフロツプ、６
，７……オアゲート。
FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the present invention. 1...IC memory card body, 2...memory,
31, 32... trap address storage section, 41,
42...Comparison circuit, 5...Flip-flop, 6
,7...Orgate.
Claims (1)
によつてアドレスされるメモリと、 あらかじめ設定される特定アドレスデータを記
憶する記憶手段と、 この記憶手段が記憶しているアドレスデータと
上記メモリに与えられる外部からのアドレスデー
タを比較する比較手段と、 この比較手段での比較結果が一致したときに上
記メモリへの外部からのアクセスを禁止する制御
手段とを具備したことを特徴とするコピー防止機
能付メモリカード。[Scope of claim for utility model registration] A memory that is addressed by address data received from the outside, a storage means for storing specific address data set in advance, and address data stored in this storage means. and a comparison means for comparing external address data given to the memory, and a control means for prohibiting external access to the memory when the comparison results by the comparison means match. Memory card with copy protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097282U JPH0455651U (en) | 1990-09-18 | 1990-09-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097282U JPH0455651U (en) | 1990-09-18 | 1990-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455651U true JPH0455651U (en) | 1992-05-13 |
Family
ID=31837519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990097282U Pending JPH0455651U (en) | 1990-09-18 | 1990-09-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455651U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057598A (en) * | 1983-09-07 | 1985-04-03 | Nec Corp | Read-only memory |
| JPS60235258A (en) * | 1984-05-08 | 1985-11-21 | Toshiba Corp | Uncopiable read-only storage device |
-
1990
- 1990-09-18 JP JP1990097282U patent/JPH0455651U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057598A (en) * | 1983-09-07 | 1985-04-03 | Nec Corp | Read-only memory |
| JPS60235258A (en) * | 1984-05-08 | 1985-11-21 | Toshiba Corp | Uncopiable read-only storage device |
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