Authentication system

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C380S044000, C726S026000, C726S034000

Reexamination Certificate

active

07979704

ABSTRACT:
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.

REFERENCES:
patent: 4961142 (1990-10-01), Elliott et al.
patent: 2005/0044365 (2005-02-01), Haukka et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Authentication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Authentication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Authentication system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2655860

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.