Browse Prior Art Database

Picking mechanism connected on security plug

IP.com Disclosure Number: IPCOM000013053D
Original Publication Date: 2000-Apr-01
Included in the Prior Art Database: 2003-Jun-12
Document File: 3 page(s) / 56K

Publishing Venue

IBM

Abstract

Summary of the invention

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Picking mechanism connected on security plug

Summary of the invention

The current security devices in use to protect the portable PC's can be broken very easily at PC attachment level. The idea is to have a 'smart' security plug for the attachment to the PC to generate an alarm in case of steal.

State of the art

The security device currently available to protect portable PC's is made of a steel cable with a cable loop on one hand and a key lock mechanism on the other hand. The cable loop is attached to a leg of a furniture for example while the key lock mechanism attaches to the portable PC. The weakness of this security cable resides at the PC attachment level. The key lock mechanism can be broken very easily and therefore anyone can steal the portable PC..

Advantage of the solution

When a user working on his portable PC needs to move out of his office for a while, if someone tries to break the physical attachment, the alarm rings and the noise alerts the people around the portable PC area.

Description of the invention

Following is an implementation of the design.

Key Contact

Optocoupler

Vcc

The security plug includes two electronic parts: an LED and a battery. The LED is located on the front face of the plug in front of the PC. In addition the front face of the plug has an internal magnet.

On the PC side, two mechanical requirements have to be satisfied: a photo transistor has to be located in such a way that it is in front of the LED when

Battery

+

-

Vcc

R1

R2

ILS contact

Key

Plug

State Machine

On

Buzzer

Vcc

Design in Design in portable PC security plug


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the security plug is inserted the ILS component has to be located in such a way that it is in front of the internal

magnet when the security plug is inserted

The following state machine diag...