Browse Prior Art Database

Electronic Pen Storage Chamber Pick-up Mechanism

IP.com Disclosure Number: IPCOM000106714D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Judice, DE: AUTHOR [+4]

Abstract

Described is a hardware implementation of an electronic pen storage chamber pick-up mechanism to provide testability of tetherless pens, as used in pen-based computing systems. The pen is designed to emit radio frequencies while placed in it's storage chamber to enable microcode control functions to perform a series of tests.

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This is the abbreviated version, containing approximately 63% of the total text.

Electronic Pen Storage Chamber Pick-up Mechanism

      Described is a hardware implementation of an electronic pen
storage chamber pick-up mechanism to provide testability of
tetherless pens, as used in pen-based computing systems.  The pen is
designed to emit radio frequencies while placed in it's storage
chamber to enable microcode control functions to perform a series of
tests.

      Typically, magnetic pens are used as input devices in tablet
computers.  Should a pen fail to function, the user may have
difficulty in operating the tablet.  Typically, the magnetic pen is
used in conjunction with a magnetic sensitive grid, which is part of
a tablet computer.  This untethered pen emits a modulated radio
frequency signal which is received and demodulated by other
electronics within the tablet computer.  The detected information is
used by the system software to determine the location of the pen with
respect to the magnetic grid, thereby allowing a user to put data
into the tablet computer.

      The concept described herein provides a means whereby a pen
storage unit receives signals from the magnetic pen while it is in
its storage facility.  The signals enable microcode control functions
to perform tests, such as pen power on/off, pen up and down
operations, and pen battery tests.

      The Figure shows how the storage unit is used as a testing
device.  Coil of fine wire 10 is wrapped around pen storage chamber
11 which acts as an antenna to pick u...