Browse Prior Art Database

Pointing Device with Scrolling Facility

IP.com Disclosure Number: IPCOM000119035D
Original Publication Date: 1997-Nov-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Denny, IM: AUTHOR [+2]

Abstract

The use of a pointing device, such as a mouse, simplifies many computer operations. However, for certain operations, such as those involving scrolling of text and images on the screen, the conventional mouse has shortcomings.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 75% of the total text.

Pointing Device with Scrolling Facility

      The use of a pointing device, such as a mouse, simplifies many
computer operations.  However, for certain operations, such as those
involving scrolling of text and images on the screen, the
conventional mouse has shortcomings.

      The described improved mouse incorporates a joystick type
control, such as that known as a "Trackpoint*", in addition to the
other controls conventionally included.  As shown in Fig 1, the
supplementary control (1) is conveniently positioned at the left rear
edge of the mouse (2) to permit operations by the thumb of the
operator.  Provision may be made for repositioning the supplementary
control to the right side of the mouse to facilitate use by
left-handed operators.

      Referring to Fig. 2, the hardware of the mouse is modified so
that the additional data created by the Trackpoint is added to the
data from the conventional mouse controls in an enlarged data
"packet" for transmission to the computer.  This transmission could
be in a form suitable for PS/2*, Serial, parallel or other type of
interface.

      The mouse driver software is also modified to receive this data
and use the additional inputs to control the "scroll bars" of a
Windows** or similar operating system.

      The speed of scrolling in any direction may be made directly or
variably proportional to the force exerted on the Trackpoint device;
thus, allowing fine control over the scrolling process.

   ...