Telecommunications System

a technology of telecommunications system and telephone, applied in the field of telecommunications system, can solve the problem of data loss on a first-in-first-out basis, and achieve the effect of facilitating credit card transactions carried out over the telephon

US20050026635A2Inactive Publication Date: 2005-02-03RPX CORP +1
36 Cites 30 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
Publication Date
2005-02-03
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Abstract of the DisclosureIn a telecommunications system such as a global mobile telephone network in which each subscriber unit includes a Subscriber Identity Module (SIM card), each SIM card has fixed memory locations, to which data can be addressed over the air. Some of the locations can not be overwritten from the subscriber unit but can be accessed therefrom on the entry of short simple codes, each associated with one of the locations. Further fixed memory locations can be read over the air only when the subscriber enters a personal identification number. Locking control files are used to control read / write access to the locations respectively.
Need to check novelty before this filing date? Find Prior Art

Description

Detailed Description of the InventionCross Reference to Related Applications

[0001] This application claims priority under 35 USC Section 120 and is a continuation of U.S. Application No. 09 / 455,628, filed Dec. 7, 1999, now U.S. Patent No. 6,453,167, which is a continuation of U.S. Application Ser. No. 08 / 557,147, filed Apr. 19, 1996, now U.S. Pat. No. 6,011,976, which is a national application of prior International Application No. PCT / GB94 / 01295, filed June 15, 1994. U.S. Application Nos. 09 / 455,628 and 08 / 557,147 are incorporated herein by reference.Background of Invention

[0002] This invention relates to a telecommunications system. In particular, but not exclusively, it relates to a mobile communications system such as a cellular mobile radio or telephone system.

[0003] A recent innovation in such systems has been the introduction of Subscriber Identity Modules (SIM cards). These are integrated circuit cards which can be releasably inserted into a mobile telephone and which cont...

Examples

Embodiment Construction

Cross Reference to Related Applications

[0001] This application claims priority under 35 USC Section 120 and is a continuation of U.S. Application No. 09 / 455,628, filed Dec. 7, 1999, now U.S. Patent No. 6,453,167, which is a continuation of U.S. Application Ser. No. 08 / 557,147, filed Apr. 19, 1996, now U.S. Pat. No. 6,011,976, which is a national application of prior International Application No. PCT / GB94 / 01295, filed June 15, 1994. U.S. Application Nos. 09 / 455,628 and 08 / 557,147 are incorporated herein by reference.

Background of Invention

[0002] This invention relates to a telecommunications system. In particular, but not exclusively, it relates to a mobile communications system such as a cellular mobile radio or telephone system.

[0003] A recent innovation in such systems has been the introduction of Subscriber Identity Modules (SIM cards). These are integrated circuit cards which can be releasably inserted into a mobile telephone and which contain in memory the subscriber's identi...