| Patent Number |
Title Of Patent |
Date Issued |
| 6035188 |
Active waveform collection for use in transmitter identification |
March 7, 2000 |
| A method and system for actively and rapidly collecting reference waveforms from a large number of cellular telephones is provided. The reference waveforms are used to generate fingerprints which are used to distinguish between authorized cellular telephones and unauthorized cellular |
| 5999807 |
System and method for the verification of authentic telephone numbers in a wireless telephone sy |
December 7, 1999 |
| A system for the authorization of wireless telephone communications establishes two sets of authorized telephone numbers. A first set of authorized telephone numbers are supplied by the customer, and the second set of authorized numbers are derived from customer bills paid by the cus |
| 5999806 |
Waveform collection for use in wireless telephone identification |
December 7, 1999 |
| A system and method for collecting reference waveforms from authorized wireless telephones in a wireless telephone network. The collected reference waveforms are used by a fingerprint analyzer to distinguish telephone calls made by the authorized wireless telephone from telephone cal |
| 5970405 |
Apparatus and method for preventing fraudulent calls in a wireless telephone system using destin |
October 19, 1999 |
| A system and method for the detection of fraudulent use of a wireless telephone system includes a fingerprint analyzer that identifies an unauthenticated wireless telephone as authorized or fraudulent based on a fingerprint of the unauthenticated wireless telephone. The system mainta |
| 5956635 |
Detection and prevention of channel grabbing in a wireless communications system |
September 21, 1999 |
| A method and system for detecting a voice channel grab by a pirate in a cellular telephone network. Initially, RF signals transmitted to and from an authorized cellular telephone over the control and voice channels are monitored to track call processing activities and obtain various data |
| 5893031 |
System and method for collection of transmission characteristics |
April 6, 1999 |
| A system and method for collecting fingerprint reference wave forms under controlled conditions includes a radio frequency (RF) enclosure designed to receive a cellular telephone. A control system, including a transmitter and receiver provides RF communications with a cellular phone plac |
| 5819171 |
Automated forced call disruption for use with wireless telephone systems |
October 6, 1998 |
| A method and apparatus which provide the ability to disrupt normal completion of a specific call made through a wireless telephone system. The specified call can be forced to be immediately ended, re-routed immediately to a selectable destination, or linked to a local voice frequency |
| 5673306 |
Cellular rental phone system and method having realtime data collection and billing |
September 30, 1997 |
| Cellular telephone rental system and method wherein a point-of-purchase rental terminal capturing transaction data, obtains validation thereof, and communicates same to a collector which in turn instructs a switching system to enable the cellular phone to make and receive calls. The |
| 5517555 |
Real time information system for cellular telephones |
May 14, 1996 |
| Method and apparatus for collecting call detail, monitoring customer account balance for excessive charges, and controlling the capabilities of cellular subscriber stations on the cellular telephone switch in substantially real time is disclosed. A communication system co-located at |
| 5301223 |
Cellular telephone system with remote programming, voice responsive registration and real time b |
April 5, 1994 |
| Method and apparatus for use in a mobile telephone rental system in which credit card information is communicated between the mobile telephone unit 100 and a Voice Response System 302 for customer registration and remote programming of mobile telephone unit 100 features and NAM settings; |
