# US 2008/0175089 A1 · Flash memory card

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- Number: US 2008/0175089 A1
- Document ID: US20080175089A1
- Status: Published application
- Kind: A1
- Application number: 11/695,267
- Filed: 2007-04-02
- Published: 2008-07-24
- Earliest claimed: 2007-01-19
- Inventors: Seok-Won Heo; Chang-Duck Lee; Jae-Sung Yu; Dong-Ryoul Lee
- Web page: https://patentgrep.com/patent/US20080175089A1

## CPC

- G06F 13/1694: {Configuration of memory controller to different memory types}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A flash memory card including a main memory core, a removable supplementary memory core, and a controller operating to control the main and supplementary memory cores. The supplementary memory core includes a plurality of memory cores and is replaceable.

## Claims

### Claim 1

A flash memory card comprising:
a main memory core;
a removable supplementary memory core; and
a controller operating to control the main and supplementary memory cores,
wherein the supplementary memory core includes a plurality of memory cores and is replaceable in the flash memory card.

### Claim 2 (depends on 1)

The flash memory card as set forth in claim 1, wherein each of the plurality of memory cores is the same or is different from each other in density.

### Claim 3 (depends on 1)

The flash memory card as set forth in claim 1, wherein when the supplementary memory core is removed from the flash memory card, the controller activates the main memory core.

### Claim 4 (depends on 1)

The flash memory card as set forth in claim 1, wherein when the supplementary memory core is connected to the flash memory card, the controller activates the main memory core and the supplemental memory core.

### Claim 5 (depends on 1)

The flash memory card as set forth in claim 1, wherein the controller comprises:
a ROM storing firmware to manage the main memory core and to manage the plurality of memory cores in correspondence with respective densities of the main memory core and the plurality of memory cores;
a RAM storing firmware to manage the memory core having a density corresponding to firmware that is absent in the ROM; and
a central processing unit managing the main memory core and the plurality of memory cores by means of the firmware stored in the ROM and the RAM.

### Claim 6 (depends on 5)

The flash memory card as set forth in claim 5, wherein the RAM is a static RAM.

### Claim 7 (depends on 5)

The flash memory card as set forth in claim 5, wherein the central processing unit reads card identification information of the main memory core and confirms a density of the main memory core from the card identification information that has been read.

### Claim 8 (depends on 7)

The flash memory card as set forth in claim 7, wherein the central processing unit selects firmware from the ROM in correspondence with the density of the main memory core.

### Claim 9 (depends on 8)

The flash memory card as set forth in claim 8, wherein the central processing unit controls the main memory core by means of the selected firmware.

### Claim 10 (depends on 5)

The flash memory card as set forth in claim 5, wherein the central processing unit reads card identification information of the plurality of memory cores and confirms the density of the plurality of memory cores by use of the card identification information that has been read.

### Claim 11 (depends on 10)

The flash memory card as set forth in claim 10, wherein the central processing unit selects the firmware stored in the ROM in correspondence with each of the densities of the plurality of memory cores.

### Claim 12 (depends on 11)

The flash memory card as set forth in claim 11, wherein the central processing unit controls the plurality of memory cores correspondingly by use of the selected firmware.

### Claim 13 (depends on 5)

The flash memory card as set forth in claim 5, wherein if firmware for managing one or more memory cores is absent in the ROM, the central processing unit reads the firmware from one of the plurality of memory cores having a density correspondent with the firmware that is absent in the ROM.

### Claim 14 (depends on 13)

The flash memory card as set forth in claim 13, wherein the central processing unit stores the firmware that has been read from the one of the plurality of memory cores into the RAM.

### Claim 15 (depends on 14)

The flash memory card as set forth in claim 14, wherein the central processing unit selects the firmware stored in the RAM and controls corresponding memory cores by means of the selected firmware.