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 for dynamic multi-level pricing for wireless communications according to quality of service
Address generation unit for accessing a multi-dimensional data structure in a desired pattern
Battery loading and unloading mechanism
Sensing device and electronic apparatus
LED drive circuit
Handbag
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
  Randomly Featured Patents
Heatable and/or coolable cylinder
Rock picker and tumbler
Particle measurement by acoustic speckle
Blind mate non-crimp pin RF connector
Bio-medical injector apparatus
Fluid storage material including particles secured with a crosslinkable binder composition and method of making same
Energy efficient liquefaction of biomaterials by thermolysis
Electrostatic charge image developing toner
Roller press with a device for the relief of the pressure roll
Mowing machine