Browse Prior Art Database

Remote Pointer Using a Window

IP.com Disclosure Number: IPCOM000101203D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 3 page(s) / 81K

Publishing Venue

IBM

Related People

Fin, TH: AUTHOR [+2]

Abstract

Disclosed is a method for creating a remote pointer, which points to an object on another screen. The remote pointer is useful in a teleconferencing environment. The remote pointer is displayed in a small window. The program moves the small window when the remote pointer should move.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Remote Pointer Using a Window

       Disclosed is a method for creating a remote pointer,
which points to an object on another screen.  The remote pointer is
useful in a teleconferencing environment.  The remote pointer is
displayed in a small window.  The program moves the small window when
the remote pointer should move.

      Requirements of the remote pointer are (i) to move fast and
redraw the vacated area quickly, and (ii) not to be hidden by other
windows.  Window systems support a system pointer that satisfies
these requirements for pointing to a local object.  However, they do
not support multiple pointers.  A remote pointer must be realized as
a window application that meets the two requirements.

      The implementation consists of an initialization part, a sender
part, and a receiver part.  One workstation needs one initialization
part, one sender part, and several receiver parts.  A receiver part
in a workstation is associated with each sender part in other
workstations. The parts run under a multitasking OS with a window
system in a workstation with communication capability.  Sender parts
and receiver parts communicate with one another through messages that
include the coordinates of a system pointer.

      The initialization part creates small windows and establishes
connections between parts.  An example of connections between parts
is shown in Fig. 1.  Fig. 1 describes a case of three users.  The
sender part gets the location of the system pointer i...