System for preventing unauthorized use of a mobile phone

• US 20060009196A1
• Filed: 05/20/2005
• Published: 01/12/2006
• Est. Priority Date: 07/09/2004
• Status: Active Grant

• Current Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Original Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Inventors: Lai, Cheng-Shing, Chu, Xiang-Lin
• Granted Patent: US 7,623,845 B2
• Time in Patent Office: Days
• US Class Current: 455/411
• CPC Class Codes: H04M 1/66 with means for preventing unauthorised or fraudulent calling verifying user identity or authority in secret or secure digital communications H04L9/32

Abstract

The present invention is to provide a system for preventing unauthorized use of a mobile phone, which comprises a portable object having a radio frequency identification component installed therein and a mobile phone installed with a decoding module and an identification data, such that after the mobile phone is turned on, the radio frequency identification component and the mobile phone carry out the steps of sending out a radio signal from the decoding module; issuing an identifying data by the radio frequency identification component when being located in an effective range for receiving the radio signal; decrypting the identifying data by the decoding module after receiving the identifying data; and enabling the mobile phone to be used normally when the decrypted identifying data matches with the identification data.

Claims

1. A system for preventing unauthorized use of a mobile phone, comprising a portable object having a radio frequency identification component installed therein and said mobile phone installed with a decoding module and an identification data, such that after said mobile phone is turned on, said radio frequency identification component and said mobile phone carry out an authorizing process including:

sending out a radio signal by said decoding module;

issuing an identifying data by said radio frequency identification component when said radio frequency identification component is located in an effective region for receiving said radio signal; and

enabling said mobile phone to be used normally when said identifying data matches with said identification data.

2. The system for preventing unauthorized use of a mobile phone of claim 1, wherein said mobile phone carries out the step of sending out said radio signal and a process followed thereto, before dialing a phone number;

and

said mobile phone can dial out a telephone number when said mobile phone determines that said identifying data matches with said identification data.

3. The system for preventing unauthorized use of a mobile phone of claim 1, wherein said mobile phone cannot dial out a telephone number when said mobile phone determines that said identifying data mismatches with said identification data.

4. The system for preventing unauthorized use of a mobile phone of claim 1, wherein a first time and a second time are set in said mobile phone, and said first time is longer than said second time and, after reaching said first time, said mobile phone carries out the step of sending out radio signals and the process followed thereto, and said mobile phone beeps when reaching said second time, such that said mobile phone within idle time carries the steps of:

determining whether or not said first time is reached;

carrying out the step of sending out said radio signal and the process followed thereto if said first time is reached, and then determining whether or not said identifying data matches with said identification data;

allowing to dial out an emergency call if said identifying data mismatches said identification data;

determining whether or not said second time is reached;

starting a serial beeping if said second time is reached;

determine whether or not said identifying data is received;

determining whether or not said identifying data matches with said identification data if said identifying data is received; and

if yes, sounding a louder beep.

5. The system for preventing unauthorized use of a mobile phone of claim 3, wherein after said first time is determined to be reached and said identifying data matches with said identification data, said mobile phone continues idling and then carries out said step of determining whether or not said first time is reached.

6. The system for preventing unauthorized use of a mobile phone of claim 3, wherein said identifying data is not received after said second time is determined to be reached, said mobile phone continues beeping.

7. The system for preventing unauthorized use of a mobile phone of claim 1, wherein said identification data comprises a private system identification code and a radio frequency identification serial number and at least one checking character of said mobile phone, after said identifying data is decrypted by said decoding module, at least a private system identification code, a radio frequency identification serial number and an encrypted data corresponding to said mobile phone are includes, and said encrypted data is decoded by a decoder of said decoding module into at least one checking character, such that after said decoding module completes decrypting said identifying data, said mobile phone carries out the steps of:

determining whether or not said private system identification code and said radio frequency serial number of said decrypted identifying data are the same as said private system identification code and said radio frequency serial number of said identification data;

if yes, then decoding said encrypted data into at least one checking character by said decoding module through using said decoder;

determining whether or not said checking character of said encrypted data after being decoded is the same as said checking character of said identification data; and

if yes, proceeding with normal operating status.

8. The system for preventing unauthorized use of a mobile phone of claim 7, wherein if said private system identification code and said radio frequency serial number of said decrypted identifying data are different from said private system identification code and said radio frequency serial number of said identification data, then said mobile phone prohibits a user from using all paid functions and locks all personal data in said mobile phone, and then displays an error message.

9. The system for preventing unauthorized use of a mobile phone of claim 7, wherein if said checking character of said decrypted data is the same as said checking character of said identification data, then said mobile phone prohibits a user from using all paid functions and locks all personal data in said mobile phone, and then displays an error message.

10. The system for preventing unauthorized use of a mobile phone of claim 1, wherein said decoding module comprises:

a code reading antenna, for receiving an identifying data from said radio frequency identification component;

a radio frequency filtering and matching circuit, coupled with said code reading antenna and carrying out a filtering and matching process for said identifying data;

a modulate circuit, coupled with said radio frequency filtering and matching circuit and carrying out a filtering and matching process for said identifying data; and

a decoding and decrypting circuit, coupled to said processor and said modulate circuit of said mobile phone, and said processor being coupled to a memory module, and said identification data being stored in said memory module;

thereby, said mobile phone can use said radio frequency filtering and matching circuit, said modulate circuit, and said decoding and decrypting circuit to produce said radio signal, and said code reading antenna sends out said radio signal and said radio frequency identification component receives said radio signal, and a capacitor is installed in said radio frequency identification component for charging, and said radio frequency identification component produces said identifying data to be sent to said mobile phone through an antenna of said radio frequency identification component.

11. The system for preventing unauthorized use of a mobile phone of claim 10, wherein said decoding and decrypting circuit is a decoder chip, and said decoder chip connects a timing pin with a clock pin of said processor and a data pin of said decoder chip with said data pin for sending a decoded data to said processor, and said decoder chip further connects a radio frequency signal input pin with said modulate circuit, such that said signal received by said code reading antenna is filtered by said radio frequency filtering and matching circuit and then passed to said module circuit for a modulation, and then sent to said decoder chip through said radio frequency input pin for decoding.

12. The system for preventing unauthorized use of a mobile phone of claim 1, wherein said portable object is a ring, and said radio frequency identification component is installed in said ring, and said antenna of said radio frequency identification component is installed at an external side or on both edges of said ring, and said identifying data produced by said radio frequency identification component corresponds to said mobile phone only.