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Method and circuit arrangement for determining a charge consumed within a period in mobile devices

  • US 8,068,885 B2
  • Filed: 03/09/2006
  • Issued: 11/29/2011
  • Est. Priority Date: 09/09/2003
  • Status: Active Grant
First Claim
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1. A method for calculating a consumed charge Q referred to a period Δ

  • t in a mobile device with mains-independent power supply configured to be in different system states in the period Δ

    t, comprising;

    determining a period of a receiving/transmitting state in which the mobile device is in a transmitting state or in a receiving state in the period Δ

    t;

    reading out a stored predetermined current value for a current of the receiving/transmitting state from a memory, wherein the stored predetermined current value read out from the memory is dependent on at least one of supply voltage, temperature or component tolerances; and

    multiplying the stored predetermined current value with the determined period in order to calculate the consumed charge Q for the receiving/transmitting state occurring in the period Δ

    t.

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