Browse Prior Art Database

Personal Computer Card Expansion Method

IP.com Disclosure Number: IPCOM000118363D
Original Publication Date: 1997-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Ogura, A: AUTHOR [+2]

Abstract

The size of a Personal Computer (PC) Card is defined by Japan Electronic Industry Development Association (JEIDA) standards. The limitation of the outline decreases the expandability of the PC card. This invention presents a solution for the expandability by using a cover (socket) mechanism.

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Personal Computer Card Expansion Method

      The size of a Personal Computer (PC) Card is defined by

Japan


Electronic Industry Development Association (JEIDA) standards.  The
limitation of the outline decreases the expandability of the PC card.
This invention presents a solution for the expandability by using a
cover (socket) mechanism.

      Fig. 1 shows an example of the product.  The product is a
system which has a relatively large Liquid Crystal Display (LCD)
panel, keyboard and Personal Computer Memory Card International
Association (PCMCIA) Interface (IF) portion.

      Fig. 2 shows a keyboard expansion unit and connectivity with
the above system.  The keyboard expansion unit has enough stroke keys
and backlight units, etc., within it.  The interface signals use the
same PCMCIA 68 pin connectors and the system unit has a selector,
which selects PCMCIA interface or an expansion keyboard unit.

      A product, like IBM VW-200 (ChipCard), also has a PCMCIA
portion protect cover.  However, this invention can remove the
limitation of the PCMCIA outline, and the expandability for the
function-like key  layout, shape, input-output mechanism.