Contactless smartcard for use in cellular telephone

DETAILED DESCRIPTION OF THE DRAWINGS Referring to FIG.
1, a pictorial diagram is shown illustrating the conceptual idea of incorporating a smartcard and its associated functions within cellular telephone 10.
Cellular telephone 10 includes cellular telephone circuitry and smartcard circuitry (shown in block form in FIG.
2 and in detailed block form in FIGS.
3 and 4) for performing both a cellular telephone function and a smartcard function.
The circuitry for accomplishing the smartcard function includes an RF interface and smartcard logic function circuitry.
The RF interface provides a contactless interface between the smartcard logic function circuitry in telephone 10 and an external reader/system.
This integration of a contactless smartcard into a cellular telephone function provides ease of use of the smartcard, enhanced security from theft or loss, the ability to read and access information stored within the smartcard by utilizing the cellular telephone display for displaying available smartcard functions, and the ability to update/change information stored within the smartcard by utilizing the cellular telephone functions to electronically communicate with an external system.
Cellular telephone 10 includes casing 12 for housing the electronics for implementing both a smartcard function and a cellular telephone function as will be described and shown in more detail with respect to FIG.
2.
Cellular telephone 10 includes on-off switch 14, speaker 16 and cellular telephone antenna 18.
Additionally, cellular telephone 10 includes selector buttons 20, voice input/microphone 22 and display 24.
Housing 12 may take the form of any housing for a cellular phone, for example, the housing for Motorola cellular telephones such as the Microtac.
RTM.
phone or Startac.
RTM.
phone.
Referring to FIG.
2, a detailed block diagram illustrating the electronics associated with cellular telephone 10.
As mentioned earlier, cellular telephone 10 includes the electronic circuitry for performing both a cellular telephone function and a contactless smartcard function whereby the human interface that selects the cellular telephone and the smartcard functions is accessed through the selector buttons 20 that are on the exterior of the cellular telephone housing case 12, as shown in FIG