초록 ▼

This invention overcomes the disadvantages of the prior art by providing a cellular telephone metering systems that allows phone calls to be made as long as sufficient funds or call units reside in the phone. The apparatus of this invention also utilize encryption and employ seed numbers for the add

This invention overcomes the disadvantages of the prior art by providing a cellular telephone metering systems that allows phone calls to be made as long as sufficient funds or call units reside in the phone. The apparatus of this invention also utilize encryption and employ seed numbers for the addition of funds or call units to the cellular phone.

대표청구항 ▼

[ What is claimed is:] [1.] A system for metering cellular telephone usage and connecting one or more cellular telephones to a telephone network, said system comprising:a plurality of cellular telephones having a first processor having a program that resides therein that contains information that re

[ What is claimed is:] [1.] A system for metering cellular telephone usage and connecting one or more cellular telephones to a telephone network, said system comprising:a plurality of cellular telephones having a first processor having a program that resides therein that contains information that represents funds or call units that have been placed in said first processor so that the funds or call units are removed from said first processor when calls are made and added to said first processor when funds are added; wherein said first processor includes:a first descending register in said first processors, said first descending register increases in value when funds or call units are added to said first processor and decreases in value when calls are made on said cellular telephone;a first ascending register that increases in value when calls are made on said cellular telephone;a first control sum which verifies that the contents of said first ascending register and the contents of said first descending register remain constant until additional funds or call units are added to said first processor;a telephone exchange that is coupled to a data center having a second processor having a program that resides therein that represents funds or call units that have been placed in or removed from said first processor, wherein said second processor includes;a second descending register that increases in value when funds or call units are added to said second processor and decreases in value when calls are made on said cellular telephone;a second ascending register that increases in value when calls are made on said cellular telephone; anda second control sum which verifies that the contents of said second ascending register and the contents of said second descending register remain constant until additional funds or call units are added to said second processor;.means for adding additional funds or call units to the cellular telephone and data center; wherein said means for adding additional funds or call units comprises:a voice response unit located in said data center; andmeans located in the cellular telephone responsive to said voice unit for the user to enter information requested by said voice unit and the amount of additional funds or call units the user wants to be added,means coupled to said voice response unit for generating one or more codes that allows funds or call units requested by the telephone user to be added in order to make additional phone calls;means coupled to said voice response unit for generating an access code that allows funds or units requested by the telephone user to be added in order to make additional phone calls, wherein said means for generating an access code comprises:means located in the cellular telephone for generating a control sum;means located in the cellular telephone for determining the number of times funds or call units were added to the cellular telephone;means for summing the control sum and the number of times funds or call units were added to the cellular telephone;means for calculating a cyclical redundancy code of the control sum and the number of times funds or call units were added to the cellular telephone; andmeans for summing the control sum, the number of times funds or call units were added to the cellular telephone, and the cyclical redundancy code of the control sum and the number of times funds or call units were added to the cellular telephone to obtain the access code, whereby said cellular telephones are connected to the network if sufficient funds are present in said first processor.