Browse Prior Art Database

Wrist Trackball Pointing Device

IP.com Disclosure Number: IPCOM000106684D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Genduso, TB: AUTHOR

Abstract

Disclosed is a pointing device, including a trackball and a rocker switch, attached to a strap, which can be worn by a user in the manner of a wristwatch. Motion of the trackball and operations of the switch are communicated to a computer system by means of a short range radio transmitter within the pointing device.

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This is the abbreviated version, containing approximately 74% of the total text.

Wrist Trackball Pointing Device

      Disclosed is a pointing device, including a trackball and a
rocker switch, attached to a strap, which can be worn by a user in
the manner of a wristwatch.  Motion of the trackball and operations
of the switch are communicated to a computer system by means of a
short range radio transmitter within the pointing device.

      As shown in the Figure the pointing device includes a housing
2, in which a spherical ball 4 is mounted, being free to rotate in
any direction.  Conventional electromechanical means are provided
within housing 2 to convert rotary motion of ball 4 into electrical
signals.  A rocker switch, activated by a handle 6, provides a first
electrical output when the handle is pressed at a left end 8, and a
second electrical output when the handle is pressed at a right end
10.  Housing 2 also includes a finger rest portion 12 similar in
shape to switch handle 6.  A top cover 14 of housing 2 may be removed
to permit the cleaning or replacement of ball 4.

      A strap 16 is attached to housing 2 for wearing the device on
the wrist.  The ends of strap 16 are fastened by means of a clasp 18,
which engages the opposite end 20 of the strap.  Clasp 18, which is
slightly curved to match the shape of the wrist, includes a battery
compartment holding a number of coin-sized batteries, which are used
to provide electrical power for the device.  Clasp 18 may be opened
to reveal this compartment for the replacement of b...