IP Library › Granted Patent US 6,940,153
Granted Patent B2
US 6,940,153 · App. 10/358,770 · Granted Sep 6, 2005

Magnetic shielding for magnetic random access memory card

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Quick Facts
Patent No.
US 6,940,153
App. No.
10/358,770
Granted
Sep 6, 2005
Kind
B2
Abstract

A memory card includes at least one magnetic random access memory supported by a substrate, and a memory card cover disposed over the magnetic random access memory and the substrate to form a memory card, wherein at least one of the substrate and the memory card cover includes magnetic shielding to at least partially shield the magnetic random access memory from external magnetic fields, the memory card cover forming an external portion of the memory card.

Claims (29)

1. A memory card, comprising:

at least one magnetic random access memory supported by a substrate;

a memory card cover disposed over the magnetic random access memory and the substrate to form the memory card; and

an input/output connector electrically coupled with the magnetic random access memory and supported by the substrate, the connector forming an edge of the memory card and being adapted to connect the memory card to a device for receiving the memory card;

wherein at least one of the substrate and the memory card cover comprises magnetic shielding to at least partially shield the magnetic random access memory from external magnetic fields, the memory card cover forming an external portion of the memory card;

wherein the connector forms a first edge of the memory card; further wherein the memory card cover defines a second edge of the memory card opposite the first edge.

2. The memory card of claim 1 , wherein the substrate comprises a printed circuit board.

3. The memory card of claim 1 , wherein the magnetic shielding comprises a generally continuous layer of magnetic shielding material applied over the at least one magnetic random access memory device.

4. The memory card of claim 1 , wherein the magnetic shielding comprises magnetic shielding material applied to the memory card cover.

5. The memory card of claim 1 , wherein the magnetic shielding comprises a foil layer of magnetic shielding material.

6. The memory card of claim 1 , wherein the magnetic shielding comprises magnetic shielding particles embedded in the memory card cover.

7. The memory card of claim 1 , wherein the magnetic shielding comprises magnetic shielding material applied onto the substrate.

8. The memory card of claim 1 , wherein the magnetic shielding comprises magnetic shielding material applied onto the substrate to form an external surface of the memory card.

9. The memory card of claim 1 , wherein the substrate is recessed within the memory card relative to the connector.

10. The memory card of claim 1 , wherein the connector is bordered on opposite sides thereof by the memory card cover.

11. The memory card of claim 1 , wherein the memory card cover comprises two memory card cover portions formed as separate pieces, the connector being bordered on one side thereof by one of the memory card cover portions and on the opposite side thereof by the other memory card cover portion, wherein an edge of the connector extends from said one memory card cover portion to the other memory card cover portion, further wherein said connector edge is generally coplanar with outer edges of the memory card cover portions; further wherein the connector is at least partially recessed within the memory card cover portions.

12. The memory card of claim 1 , wherein the connector is adapted to readily removably electrically connect the memory card to multiple host devices.

13. The memory card of claim 1 , wherein the memory card cover comprises two memory card cover portions formed as separate pieces; further wherein the memory card comprises an internal frame supporting and spacing apart the memory card cover portions, the internal frame further defining a recess for accommodating the connector.

14. A memory card, comprising:

magnetic memory;

means for covering the magnetic memory, the means for covering forming an external portion of the memory card;

means for shielding the magnetic memory from external magnetic fields, the means for shielding being disposed in the means for covering and being deposited on and around the magnetic memory; and

means for electrically connecting the magnetic memory to multiple host devices adapted to receive the memory card, the means for electrically connecting forming an edge of the memory card.

15. The memory card of claim 14 , wherein the means for covering comprises a printed circuit board and the means for shielding comprises magnetic shielding material applied on the printed circuit board.

16. The memory card of claim 15 , wherein the means for covering further comprises a memory card case connected to the printed circuit board.

17. The memory card of claim 14 , wherein the means for covering comprises a plastic memory card case.

18. The memory card of claim 14 , wherein the magnetic memory means comprises magnetic random access memory.

19. The memory card of claim 14 , wherein the means for electrically connecting forms an edge of the memory card bordered on opposite sides thereof by the means for covering.

20. The memory card of claim 14 , wherein the magnetic memory is one of a plurality of magnetic memories; further wherein the means for shielding is sprayed or sputtered on and between the plurality of magnetic memories.