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Mobile phone with internal accounting

DC
  • US 5,577,100 A
  • Filed: 01/30/1995
  • Issued: 11/19/1996
  • Est. Priority Date: 01/30/1995
  • Status: Expired due to Term
First Claim
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1. A mobile phone system comprising a system provider having a host processor unit and a plurality of system users each having at least one mobile phone unit wherein:

  • the host processor unit has communication means for selectively establishing a communication link with each mobile phone unit; and

    ,each phone unit includes a processor, a clock chip, memory associated with the processor, program means including a complex billing algorithm and rate data for internally calculating call charges as calls are made, wherein the phone unit includes internal accounting means for generating a debit account with an account amount in the phone unit and decrementing the account amount in the debit account in real time, and wherein the system provider has payment verification means under system provider control for setting a phone use account amount and communicating the account amount to the phone unit, wherein the internal accounting means adds the account amount to the debit account.

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