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
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Method and apparatus for sensing an input object relative to a sensing region of an ultrasound sensor device
Hardware/software debugging using memory access parameters
Integrated advance copper fuse combined with ESD/over-voltage/reverse polarity protection
Method for exchanging data concerning an electronic transaction
Light-emitting device package and method of manufacturing the same
System and method for distributed security
  Randomly Featured Patents
System and method for managing and evaluating network commodities purchasing
Split cover plate for telephone outlet
Curved electrode for welding
Apparatus for removing shingles from a roof
Fixation device for an electronic display
Lid with pull tab
Optimized static sliding-window for ACK sampling
Double tank water gun
Electrophotographic element with carbazole derivative
Hybrid yeast-bacteria cloning system and uses thereof