Chipset for mobile wallet system

• US 20070293155A1
• Filed: 06/07/2007
• Published: 12/20/2007
• Est. Priority Date: 06/15/2006
• Status: Active Grant

• Current Assignee: Silicon Storage Technology Incorporated (Microchip Technology Incorporated)
• Original Assignee: Jton Systems, Inc.
• Inventors: Liao, Dave Ta-Wu, Edelson, Steven Donald
• Granted Patent: US 7,865,141 B2
• Time in Patent Office: Days
• US Class Current: 455/41.2
• CPC Class Codes: G06Q 20/3229 Use of the SIM of a M-device as secure element
• CPC Class Codes: G06Q 20/326 Payment applications installed on the mobile devices
• CPC Class Codes: G06Q 20/3278 RFID or NFC payments by means of M-devices
• CPC Class Codes: G06Q 20/353 Payments by cards read by M-devices

Abstract

The invention presents a chipset for a mobile wallet system in a communication terminal having a SIM socket and a RFID antenna. The chipset includes a wallet module and a controller module. The wallet module has a contactless interface port coupled to the RFID antenna and a wallet memory for storing wallet applications. The controller module, connected to the SIM socket of the communication terminal, has a controller memory stored with SIM function software, mobile wallet application software and software to control the wallet module. The controller module is powered through the SIM socket, and the wallet module is powered through the SIM socket and the RFID antenna.

Claims

1. A chipset for a mobile wallet system in a communication terminal having a SIM socket and a RFID antenna in communication with a contactless reader, comprising:

a wallet module, coupled to the RFID antenna, having a contactless port and a first serial port for commands transmission, and a wallet memory for storing wallet applications; and

a controller module, coupled to the SIM socket of the communication terminal, having a contact port and a second serial port for commands transmission, and a controller memory stored with SIM function software, mobile wallet application software and software for controlling the wallet module;

wherein the wallet module and the controller module are interconnected by the first serial port and the second serial port;

the controller module is powered through the SIM socket, and the wallet module is powered through the SIM socket and the RFID antenna; and

the contactless port of the wallet module supports standard contactless protocols, while the second serial port of the controller module is supplied with a set of commands specific to the contactless protocols.

2. The chipset according to claim 1, wherein the set of commands specific to the contactless protocols are designated for execution in the wallet module.

3. The chipset according to claim 1, wherein the wallet module further comprises a first I/O buffer for receiving commands from the controller module, and a second I/O buffer for holding commands from the contactless reader.

4. The chipset according to claim 3, wherein the wallet module further comprises a command arbitrator for selecting commands between the first I/O buffer and the second I/O buffer, and a command execution module for performing various operations in accordance with the selected commands.

5. The chipset according to claim 1, wherein the wallet module further comprises an authentication and encryption module for authenticating and encrypting the selected commands to secure communication with the contactless reader and the controller module.

6. The chipset according to claim 1, wherein the wallet module is implemented in hardwired logic.

7. The chipset according to claim 2, wherein the wallet module further comprises a by-pass unit implemented in hardwired logic for determining if commands from the contactless reader are included in the designated set of commands.

8. The chipset according to claim 7, wherein the commands are routed to the wallet module for command execution if the commands are included in the designated set of commands.

9. The chipset according to claim 7, wherein the commands are routed to the controller module for command execution if the commands are not included in the designated set of commands.

10. The chipset according to claim 1, wherein the wallet memory is equally divided into a plurality of banks, and each bank has a capacity of 1 KB consisting of 16 sectors of 64 bytes.

11. The chipset according to claim 1, wherein the wallet memory is equally divided into a plurality of banks, wherein each bank has a capacity of 4 KB consisting of 64 sectors of 64 bytes.

12. The chipset according to claim 10 or 11, wherein the wallet module further comprises a non-volatile register that is loaded by the controller module with bank indexes for bank selection.

13. The chipset according to claim 1, wherein the mobile wallet system comprises mobile communication ID cards that conform to GSM11-11 standard form factor, including a GSM SIM (Subscriber Identity Module) card, a GSM USIM (Universal SIM) card, a CDMA (Code Division Multiple Access) RUIM (Removable User Identity Module) card, and a PHS (Personal Handy-phone System) SIM card.

14. A chipset for a mobile wallet system in a communication terminal having a SIM socket and a RFID antenna in communication with a contactless reader, comprising:

a wallet module, having a contactless port coupled to the RFID antenna for receiving commands from the contactless reader, a non-volatile memory divided into a first area for storing wallet applications and a second area for storing controller codes, and a programmable controller for executing the commands; and

a controller module, connected to the SIM socket of the communication terminal, having a serial port for interfacing with the wallet module, and a controller memory stored with SIM function software, mobile wallet application software and software for controlling the wallet module;

wherein the controller module is powered through the SIM socket, and the wallet module is powered through the SIM socket and the RFID antenna.

15. The chipset according to claim 14, wherein a set of commands specific to the commands from the contactless reader are designated for execution in the wallet module.

16. The chipset according to claim 14, wherein the wallet module further comprises a first I/O buffer for receiving commands form the controller module, and a second I/O buffer for holding the commands from the contactless reader, and the first and the second I/O buffers are implemented by the controller codes executed on the programmable controller.

17. The chipset according to claim 16, wherein the wallet module further comprises a command arbitrator for selecting commands between the first I/O buffer and the second I/O buffer, and a command execution module for performing various operations in accordance with the selected commands, which are implemented by the controller codes executed on the programmable controller.

18. The chipset according to claim 14, wherein the wallet module further comprises an authentication and encryption module implemented by the controller codes executed on the programmable controller for securing communication with the contactless reader and the controller module.

19. The chipset according to claim 15, wherein the wallet module further comprises a by-pass unit implemented by the controller codes executed on the programmable controller for determining if the commands from the contactless reader are included in the designated set of commands.

20. The chipset according to claim 19, wherein the commands are routed to the wallet module for command execution if the commands are not included in the designated set of commands.

21. The chipset according to claim 19, wherein the commands are routed to the controller module for command execution if the commands are not included in the designated set of commands.

22. The chipset according to claim 14, wherein the mobile wallet system comprises mobile communication ID cards that conform to GSM11-11 standard form factor, including a GSM SIM (Subscriber Identity Module) card, a GSM USIM (Universal SIM) card, a CDMA (Code Division Multiple Access) RUIM (Removable User Identity Module) card, and a PHS (Personal Handy-phone System) SIM card.