Browse Prior Art Database

Means of detecting LID status of the notebook PC

IP.com Disclosure Number: IPCOM000014052D
Original Publication Date: 2000-Aug-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 31K

Publishing Venue

IBM

Abstract

Disclosed is a means to detect LID status indicating LCD cover condition. This means enables detection of LID status using lead switch device and magnetic speaker u source of magnetic field without using separate dedicated magnet unit.

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Means of detecting LID status of the notebook PC

Disclosed is a means to detect LID status indicating LCD cover condition.
This means enables detection of LID status using lead switch device and magnetic speaker u
source of magnetic field without using separate dedicated magnet unit.

(Problem to be solved)

Traditional design to detect LID status is using tact switch, which is mechanical switch.
to have correct status detection, detection means by tact switch requires rigid constructi
tact switch device and high mechanical accuracy.

As alternative means for the case where above mechanical requirements are not satisfied,
these is detection device using lead switch using mechanical position detector by magnetic
But, placing additional magnet may cause interference towards to media which is sensitive

(Detail means of implementation)

Means of the disclosure consist of "lead switch devices" and magnetic speaker unit placed
lead switch device at LID area described in Figure.

On LID closed position, magnetic speaker is moved near lead switch device for activating i
And on open state, magnetic speaker is moved apart from the switch enough to inactivate th
lead switch status.

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