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
Systems and methods for identifying similar documents
Computerized on-board system for controlling a train
Passive translational velocity measurement from optical information
Magnetic storage apparatus
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
Method and apparatus for controlling cardiac resynchronization therapy using cardiac impedance
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
  Randomly Featured Patents
Adjustable game stool assembly
Socket structure for mounting ultrasonic gas flow measuring device with respect to gas flow pipe
Method of controlling of metals in a bleach plant, using oxidation
Method of constructing block codes
Mop-head plate comprising mop cover
High strength suture with absorbable core
Apparatus for estimating the height at which a target flies over a reflective surface
System and method for monitoring and analyzing internet traffic
Assembly and method for making, mounting and filling a fluid product dispensing device
Clamp means for a stuffing machine