Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Technique for effectively providing program material in a cable television system
Method for dynamic multi-level pricing for wireless communications according to quality of service
Method and apparatus of communication using soft decision
Format for providing traffic information and a method and apparatus for using the format
Parallel processing computer systems with reduced power consumption and methods for providing the same
Note tab
Power supply system for a data storage system and a method of controlling a power supply
  Randomly Featured Patents
Commercial broadcasting system
2-door automobile body
Polymeric polyblend composition
Apparatus and method for forming micro spike liners and a micro spike liner formed thereby
Shock absorbing and shock force generating apparatus with shear pin for an oil pump and method therefor
Apparatus for manufacturing curved bodies of fiber reinforced plastic
Bottle-shaped trench capacitor with epi buried layer
Ternary fuel cell catalyst containing platinum and gallium
Surface acoustic waver convolver
Ornamental chain