Resources Contact Us Home
Authentication system

Image Number 3 for United States Patent #8132009.

An authentication system determines if a counterfeit ineligible unit is installed in a main device. When connected with a battery pack, a notebook PC generates and combines a random number and a function determination signal using a signal combining unit and transmits same to the battery pack. A first function calculation unit calculates the function of the random number. The battery pack has a signal separation unit to separate the combined signal into the random number and function determination signal, and a second function calculation unit to calculate the function of the random number for transmitting back to the notebook PC. A comparison unit compares the calculation results by the first and second function calculation units to determine whether the connected battery pack is an authorized one and denies connection if the pack is an unauthorized one.

  Recently Added Patents
Circuit design approximation
Systems and methods for programming an RFID reader
Compounds and compositions for treating chemical warfare agent-induced injuries
Dual source mass spectrometry system
Morphinan compounds
Method and system and policy server for guaranteeing data not to be interrupted
Method and system for leveraging the power of one's social-network in an online marketplace
  Randomly Featured Patents
Transfer molding method for forming integrated circuit package
Method of production of novel molybdenum-sulfide dimers and reactions of the same
Low-resistance exercise and rehabilitation chair
Carrying member
Trolley wheel assembly
Methods for abluminally coating medical devices
Methods and reagents for quantitation of HLA-DR expression on peripheral blood cells
Apparatus and method for drying a solid or liquid sample
Adaptor for a mailbox post