Smartcard/SIM Card Reader Using an ExpressCard Slot

IP.com Prior Art Database Disclosure
IP.com Disclosure Number: IPCOM000028043D
Publication Date: 21-Apr-2004
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The IP.com Prior Art Database

Abstract

Disclosed is a method for several implementations of a Smartcard reader (using ExpressCard) for laptop and desktop computers. Benefits include enabling authentication and authorization for wireless operator billing.

Language

English (United States)

Document File

5 pages / 517.8 KB

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Smartcard/SIM Card Reader Using an ExpressCard Slot

Disclosed is a method for several implementations of a Smartcard reader (using ExpressCard) for laptop and desktop computers. Benefits include enabling authentication and authorization for wireless operator billing.

Background

The ExpressCard standard supports both USB 2.0 and PCI Express interfaces. Card manufacturers are able to choose the bus that is appropriate to their application, either PCI Express or other solutions supported by USB. All host PC ExpressCard slots support cards using either interface. The host platform no longer needs to incorporate a bridge chip between the chipset and the socket. PCI Express and USB 2.0 are fully hot-pluggable. Figure 1 shows a high-level view of the ExpressCard, which includes the ability to support standard USB2 as well as PCIExpress connections.

ExpressCard supports two slot sizes: ExpressCard/54 (54mm wide), and ExpressCard/34 (34mm wide). Figure 2 shows the relative sizes of today’s CardBus PCCard, along with sizes for both the ExpressCard/54 and ExpressCard/34 solutions. ExpressCard/54 is the same width as today’s CardBus; however, the CardBus width extends to only 53mm. For a Smartcard reader, this means that a new ExpressCard reader is developed for this new form factor and connector using the ExpressCard/54 slot. A unique SIM card reader can be developed using either the ExpressCard/34 or ExpressCard/54 slot. Smartcard and SIM card solutions should utilize the USB interface to connect to the rest of the system; this provides a trusted LT+NGSCB USB path.

Four standard Smartcard sizes are defined by the ISO 7810:2003(E) standard specification, with two in common use today. These card sizes are defined in Table 1 below.

Card type

Nominal size: height x width x thickness measured in millimeters

Nominal size: height x width x thickness measured in inches

Description

ID-0

25mm x 15mm x 0.76mm

0.984 in x 0.591 in x 0.030 in

SIM card size

ID-1

85.60mm x 53.98mm x 0.76mm

3.370in x 2.125in x 0.030in

Credit card size

ID-2

105mm x 74mm x 0.76mm

4.134in x 2.913in x 0.030in

 

ID-3

125mm x 88mm x 0.76mm

4.921in x 3.465in x 0.030in

 

Table 1

Both ID-0 and ID-1 size cards are protected for common use in notebook PCs. ID-0 size
(i.e. SIM) cards are commonly used for cellular telephone and WWAN devices to store user authentication/authorization credentials in a handshake with the wireless carrier.

Using an ExpressCard solution eliminates the need for a separate controller that is traditionally used with PCMCIA and Cardbus solutions, but it does not eliminate the need for a specialized Smartcard contact or contact-less controller. It is possible that this type of Smartcard contact and/or contact-less controller can be incorporated as standard functionality into an computer chipset.

General Description

The disclosed method uses ExpressCard solutions to provide a new slot definition used with laptop and desktop computers. There is a strong demand to enable Smart...

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