# US 12,223,373 B2 · Electronic device capable of accessing memory card

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- Number: US 12,223,373 B2
- Document ID: US12223373B2
- Status: Granted
- Kind: B2
- Application number: 17/721,609
- Filed: 2022-04-15
- Published: 2023-01-05
- Granted: 2025-02-11
- Earliest claimed: 2021-07-02
- Assignees: Realtek Semiconductor Corp.
- Applicants: Realtek Semiconductor Corporation
- Inventors: Jiunn-Hung Shiau; Neng-Hsien Lin
- Web page: https://patentgrep.com/patent/US12223373B2

## CPC

- G06K 13/08: Feeding or discharging cards
- G06F 13/385: {for adaptation of a particular data processing system to different peripheral devices}
- G06K 7/0021: {for reading/sensing record carriers having surface contacts}
- G06K 7/0026: {the galvanic contacts of the connector adapted for landing on the contacts of the card upon card insertion}
- G06F 2213/0026: PCI express
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

An electronic device capable of accessing a memory card is provided. The electronic device includes a circuit board, a processing unit, a memory card slot, and a memory card access module. The processing unit is disposed on the circuit board. The memory card slot is disposed on the circuit board, allows the insertion of the memory card, and is coupled to the processing unit through a first signal line. The memory card access module is disposed on the circuit board for accessing the memory card. The memory card access module is coupled to the processing unit through a second signal line and coupled to the memory card slot through a third signal line and a fourth signal line. The first signal line, the second signal line, and the third signal line conform to the standard of a signal transmission interface.

## Claims

### Claim 1

An electronic device capable of accessing a memory card, comprising:
a circuit board;
a processing unit disposed on the circuit board;
a memory card slot which is disposed on the circuit board, allows insertion of the memory card, and is coupled to the processing unit through a first signal line; and
a memory card access module which is disposed on the circuit board, coupled to the processing unit through a second signal line, coupled to the memory card slot through a third signal line and a fourth signal line, and used for accessing the memory card;
wherein the first signal line, the second signal line, and the third signal line conform to a standard of a signal transmission interface.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the signal transmission interface is a Peripheral Component Interconnect Express (PCIe) interface.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the fourth signal line does not support the signal transmission interface.

### Claim 4 (depends on 2)

The electronic device of claim 2, wherein the fourth signal line supports a secure digital interface.

### Claim 5 (depends on 2)

The electronic device of claim 2, wherein the second signal line and the third signal line correspond to a zeroth lane of the PCIe interface, and the first signal line corresponds to a first lane of the PCIe interface.

### Claim 6 (depends on 2)

The electronic device of claim 2, wherein the memory card slot is provided with a first row of contacts, a second row of contacts, and a third row of contacts, the first signal line is coupled to the first row of contacts, the third signal line is coupled to the second row of contacts, and the fourth signal line is coupled to the third row of contacts.

### Claim 7 (depends on 6)

The electronic device of claim 6, wherein the memory card slot has an opening, and the first row of contacts, the second row of contacts, and the third row of contacts are arranged in order from the opening to an inner part of the memory card slot.

### Claim 8 (depends on 2)

The electronic device of claim 2, wherein the memory card slot comprises eight pins, with four of which being coupled to the memory card access module through the third signal line and other four of which being coupled to the processing unit through the first signal line.

### Claim 9 (depends on 2)

The electronic device of claim 2, wherein at least one of a redriver circuit and a retimer circuit is disposed on the first signal line.

### Claim 10 (depends on 1)

The electronic device of claim 1, wherein the first signal line, the second signal line, the third signal line, and the fourth signal line are disposed on the circuit board.