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Browse Prior Art Database

Thin Keyboard Structure for Notebook Personal Computer

IP.com Disclosure Number: IPCOM000117319D
Original Publication Date: 1996-Feb-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 164K

Publishing Venue

IBM

Related People

Furuhata, T: AUTHOR [+3]

Abstract

Disclosed is a method to reduce the total thickness of a notebook computer by adding a special mechanism for its keyboard. The basic idea is to reduce the keyboard height when the notebook computer is folded. This is done by eliminating the distance necessary for the key stroke. Using this method, a thin notebook PC can be realized without sacrificing the preferable key stroke distance.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 65% of the total text.

Thin Keyboard Structure for Notebook Personal Computer

      Disclosed is a method to reduce the total thickness of a
notebook computer by adding a special mechanism for its keyboard.
The basic idea is to reduce the keyboard height when the notebook
computer is folded.  This is done by eliminating the distance
necessary for the key stroke.  Using this method, a thin notebook PC
can be realized without sacrificing the preferable key stroke
distance.

      This mechanism works as follows: when closing the note PC, the
spring which is pushing the key top from it's bottom is moved away,
and the keys fixed at its bottom position.  As a result, the total
thickness is reduced by the distance of the key stroke.  On the other
hand, when the note PC is opened, the spring comes back to the
original position, pushing the key upward.  Two mechanical components
are required for this motion: 1) a mechanism for extracting the note
PC's open-close motion, 2) a mechanism for moving the spring which is
pushing back the key top.

      Fig. 1 shows two methods to realize (1).  Fig. 1 (a) shows a
method using ``ca  m'' mechanism.  When the notebook PC is closed, a
bar attached to the cover pushes a ``cam'', which is connected to a
horizontal bar underneath the keyboard.  When the notebook PC is
opened, the bar is pushed back by the spring.  Fig. 1(b) shows a link
method.  The open-close motion is transformed to a horizontal sliding
motion as well.  Fig. 2 is an example...