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Mobile phone with internal call accounting controls

  • US 5,625,669 A
  • Filed: 06/23/1994
  • Issued: 04/29/1997
  • Est. Priority Date: 09/27/1991
  • Status: Expired due to Term
First Claim
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1. A mobile telephone with internal call accounting controls, the telephone comprising:

  • a unitary hand-held telephone unit, the telephone unit having;

    transceiver means for communicating to a communication network of discrete mobile phone service areas, each mobile phone service area having a corresponding area identification code, said mobile telephone unit being moveable from one service area to another when communicating to the network, and at least one of the network and said telephone unit being capable of establishing a call communication session between the communication network and said mobile telephone unit;

    an internal microprocessor with a process control program;

    a read/write memory;

    an electronic time clock having a clock output which is representative of the time of said clock; and

    ,memory output means for transferring the contents of said read/write memory to an external device;

    wherein the transceiver means includes receiver means responsive to a call communication session being established between the network and said mobile telephone for receiving the area identification code of the service area in which said mobile telephone in the session is located;

    wherein the process control program includes process control means for automatic storing in said read/write memory the received area identification code and the clock output of said time clock representative of the timing of the call communication session and wherein on transferring the contents of said read/write memory, the stored area identification codes and the clock outputs are transferred to the external device.

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